JP7473395B2

JP7473395B2 - Wedge fastening device for scaffolding

Info

Publication number: JP7473395B2
Application number: JP2020090422A
Authority: JP
Inventors: 朋幸夛田; 大介嶋岡
Original assignee: Alinco Inc
Current assignee: Alinco Inc
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2024-04-23
Anticipated expiration: 2040-05-25
Also published as: JP2021185297A

Description

本発明は、仮設足場等の足場において使用される楔緊結装置に関する。 The present invention relates to a wedge fastening device used in scaffolding such as temporary scaffolding.

従来、構築と解体を行う仮設足場において、楔緊結装置が提供されている。例えば、図１に示すように、支柱１と横架材等の連結部材２を着脱自在に連結するための装置として、支柱１の長手方向に間隔をあけて固設したフランジ３に設けた緊結孔４に対して、連結部材２の端部に固設した連結金具５を楔部材６により緊結するように構成した楔緊結装置が公知である。 Conventionally, a wedge fastening device has been provided for temporary scaffolding that is constructed and dismantled. For example, as shown in Figure 1, a wedge fastening device is known as a device for detachably connecting a support 1 and a connecting member 2 such as a cross member, which is configured to fasten a connecting fitting 5 fixed to the end of the connecting member 2 with a wedge member 6 to fastening holes 4 provided in flanges 3 fixedly installed at intervals in the longitudinal direction of the support 1.

連結金具５は、上下顎部５ａ、５ｂの間に受入部９形成すると共に、上下顎部５ａ、５ｂにそれぞれ上側の挿通孔７と下側の挿通孔８を設けており、受入部９にフランジ３を進入させたとき、フランジの緊結孔４と上下顎部の挿通孔７、８を上下方向に連通させるように形成されている。 The connecting fitting 5 forms a receiving portion 9 between the upper and lower jaws 5a, 5b, and has an upper insertion hole 7 and a lower insertion hole 8 in each of the upper and lower jaws 5a, 5b. When the flange 3 is inserted into the receiving portion 9, the fastening hole 4 of the flange and the insertion holes 7, 8 of the upper and lower jaws are vertically connected.

楔部材６は、前記の各孔に挿通自在な厚さの盤状体より形成され、腹部６ａと背部６ｂの間の幅寸法を下方に向けて次第に幅狭とするように形成されている。 The wedge member 6 is formed from a plate-like body with a thickness that allows it to be inserted freely through each of the holes, and is formed so that the width between the abdomen 6a and the back 6b gradually narrows downward.

そこで、楔部材６を上から下に向けて上顎部５ａの挿通孔７とフランジ３の緊結孔４と下顎部５ｂの挿通孔８に挿通させた状態で、ハンマー等により殴打して下動させると、楔部材６が緊結孔４の接支縁部４ａと挿通孔７、８の受縁部７ａ、８ａの間に圧入され、接支縁部４ａと受縁部７ａ、８ａの間隔を押し広げながら、連結金具５を押動させることにより、上下顎部５ａ、５ｂの先端部を支柱の表面に圧接状態で当接する。これにより、フランジ３と楔部材６と連結金具５と支柱１の相互間における緊結状態が得られる。 Then, when the wedge member 6 is inserted from top to bottom through the insertion hole 7 of the upper jaw 5a, the fastening hole 4 of the flange 3, and the insertion hole 8 of the lower jaw 5b, it is struck downward with a hammer or the like, and the wedge member 6 is pressed into between the support edge 4a of the fastening hole 4 and the receiving edges 7a, 8a of the insertion holes 7, 8. By pushing the connecting fitting 5 while widening the gap between the support edge 4a and the receiving edges 7a, 8a, the tips of the upper and lower jaws 5a, 5b come into pressure contact with the surface of the support. This results in a fastened state between the flange 3, the wedge member 6, the connecting fitting 5, and the support 1.

そして、この緊結状態において、下顎部５ｂの挿通孔８から挿出された楔部材６の下端部をハンマー等により殴打して上動させると、緊結状態が解除される。 In this tightened state, the lower end of the wedge member 6 inserted through the insertion hole 8 of the lower jaw portion 5b is struck with a hammer or the like to move it upward, thereby releasing the tightened state.

特開２０１８－７１１９６号公報JP 2018-71196 A

上述の緊結作業を行うためには、先ず、連結金具５をフランジ３の側方に臨ませた状態からフランジ３に向けて横方向に移動させ、受入部９にフランジ３を進入させると共に、上顎部５ａの載置面１０をフランジ３に載置する必要がある。しかしながら、このとき楔部材６が受入部９の内部に位置している場合は、フランジ３を受入部９に進入させることができない。このため、図１（Ａ）に示すように、作業者の指先等で楔部材６を退避位置ＰＸに持ち上げることにより受入部９を開放状態とし、楔部材６を保持した状態で連結金具５をフランジ３に向けて移動させなければならない。 To perform the above-mentioned fastening work, first, the connecting fitting 5 must be moved laterally from a position facing the side of the flange 3 toward the flange 3, the flange 3 must enter the receiving portion 9, and the mounting surface 10 of the upper jaw portion 5a must be placed on the flange 3. However, if the wedge member 6 is located inside the receiving portion 9 at this time, the flange 3 cannot enter the receiving portion 9. For this reason, as shown in FIG. 1(A), the worker must lift the wedge member 6 to the retracted position PX with the worker's fingertips or the like to open the receiving portion 9, and then move the connecting fitting 5 toward the flange 3 while holding the wedge member 6.

受入部９にフランジ３を進入させ、楔部材６をフランジの緊結孔４に臨ませた状態で、指先等による保持から解放すれば、楔部材６は、自重で下降して停止位置ＰＹで停止するので、引き続きハンマー等による殴打により、緊結位置ＰＺまで下動させれば良い。 When the flange 3 is inserted into the receiving portion 9 and the wedge member 6 is facing the fastening hole 4 of the flange, it is released from the grip of the fingertips, etc. The wedge member 6 will descend under its own weight and stop at the stop position PY, and can then be moved down to the fastening position PZ by subsequently striking it with a hammer, etc.

足場の構築は、多数の個所において、緊結作業を行うことが必要である。連結金具５は連結部材２と一体化された重量物を構成しているので、これをフランジ３に臨むように位置決めして横方向に移動させることは重労働であり、しかも、その作業中、楔部材６を退避位置ＰＸに持ち上げた状態で保持し続けることは、作業者に酷である。 The construction of scaffolding requires fastening work at many points. The connecting fitting 5 is a heavy object integrated with the connecting member 2, so positioning it so that it faces the flange 3 and moving it laterally is hard work, and it is also hard on the worker to continue to hold the wedge member 6 raised to the retracted position PX during this work.

足場の解体の場合も同様であり、緊結状態が解除された楔部材６を退避位置ＰＸに持ち上げ、連結金具５の受入部９からフランジ３が抜き出されるまで、持ち上げ状態を保持する必要がある。 The same applies when dismantling scaffolding; the untightened wedge member 6 must be lifted to the retracted position PX and kept in the lifted state until the flange 3 is removed from the receiving portion 9 of the connecting fitting 5.

ところで、上記問題を解決するためには、例えば、連結金具に楔部材を保持するスプリングを設け、作業者が指先によりスプリングの弾発力に抗して楔部材を上下動させ、上述のような退避位置ＰＸに位置させた状態で、指先から放しても、楔部材が該退避位置で停止保持されるように構成すれば良い。 In order to solve the above problem, for example, a spring that holds the wedge member in place can be provided on the connecting fitting, and the worker can use his or her fingertips to move the wedge member up and down against the resilience of the spring, so that when the wedge member is positioned at the retracted position PX as described above, it will stop and be held in that retracted position even if the worker releases the wedge member from the fingertips.

しかしながら、この場合、上記問題は解決できるが、楔部材が退避位置に保持されている状態では、連結金具の上顎部をフランジに載置したとき、楔部材を打ち込む前に、上顎部の載置面がフランジの上面を滑動してフランジから脱落するおそれがある。特に、長尺とされた重い連結部材の場合、一対の支柱のフランジに対して、連結部材の両端部を同時に載置することは困難であるから、先ずは一方の端部の連結金具を一方のフランジに載置し、次いで他方の端部の連結金具を他方のフランジに載置する手順となるが、その際、連結部材の姿勢が変わるため、先にフランジに載置したはずの連結金具が容易に脱落してしまい、作業効率を低下するという新たな問題を発生する。 However, while this solves the above problem, when the upper jaw of the connecting fitting is placed on the flange while the wedge member is held in the retracted position, there is a risk that the mounting surface of the upper jaw will slide over the top surface of the flange and fall off the flange before the wedge member is driven in. In particular, in the case of a long and heavy connecting member, it is difficult to simultaneously place both ends of the connecting member on the flanges of a pair of supports, so the procedure is to first place the connecting fitting at one end on one flange, and then place the connecting fitting at the other end on the other flange. However, since the position of the connecting member changes during this process, the connecting fitting that was supposed to have been placed on the flange first can easily fall off, creating a new problem of reduced work efficiency.

このため、本発明の目的は、連結金具の受入部にフランジを進入させる際、楔部材を待機位置Ｐ１で静止させ、その際、楔部材の下端部が上顎部の載置面から下向きに所定距離（ｔ）だけ突出された位置を待機位置Ｐ１として、連結金具における上顎部の載置面をフランジに載置したとき、前記楔部材の下端部をフランジの緊結孔に挿入係止させ、これにより、上顎部の載置面がフランジの上面を滑動することを阻止し、フランジから脱落することのないように構成した楔緊結装置を提供する点にある。 The object of the present invention is to provide a wedge fastening device that, when the flange is inserted into the receiving portion of the connecting fitting, stops the wedge member at standby position P1, and at that time, sets the standby position P1 at a position where the lower end of the wedge member protrudes downward a predetermined distance (t) from the mounting surface of the upper jaw portion, and when the mounting surface of the upper jaw portion of the connecting fitting is placed on the flange, inserts and engages the lower end of the wedge member into the fastening hole of the flange, thereby preventing the mounting surface of the upper jaw portion from sliding on the top surface of the flange and preventing it from falling off the flange.

また、本発明の目的は、楔部材の下端部が下顎部の上面から所定高さ（ｈ）に位置する待機位置Ｐ１に関して、作業者が指先で持ち上げた楔部材を放し、自重で下降させるだけで、楔部材を待機位置（Ｐ１）となる正確な位置で受け止め、その位置で静止させ保持するが、楔部材をハンマー等の殴打により緊結位置Ｐ２に向けて打ち込むときは、前記の受け止めを好適に解除するように構成した保持手段を提供する点にある。 The object of the present invention is to provide a holding means configured such that, with respect to the waiting position P1 where the lower end of the wedge member is located at a predetermined height (h) above the upper surface of the lower jaw, the operator can simply release the wedge member held up with his fingertips and let it fall under its own weight, and the wedge member is received at the exact position that corresponds to the waiting position (P1) and held stationary in that position, but when the wedge member is driven toward the fastening position P2 by striking it with a hammer or the like, the holding means is suitably released.

そこで、上記目的を達するために本発明が手段として構成したところは、支柱に固設されたフランジと連結部材に固設された連結金具を楔部材により連結する緊結装置であり、前記連結金具は、上顎部と下顎部の間にフランジを進入させる受入部を形成し、前記楔部材は、それぞれ前記上下顎部に挿通される楔本体部と枝部を並設一体化しており、前記楔本体部の下端部を下顎部の上面から所定高さ（ｈ）に位置させた待機位置Ｐ１から、楔本体部をフランジの緊結孔に打ち込んで緊結位置Ｐ２まで下動させることにより緊結する構成において、前記楔部材の枝部の遊動面にストッパ部を突設し、前記連結金具に内装した保持手段に保持部を設け、前記ストッパ部を保持部に載置させ楔部材の自重を支持することにより楔部材を待機位置（Ｐ１）に静止させるが、該静止状態から楔部材に下向きの外力を与えたとき、ストッパ部が前記保持部を押動し変位させることにより通過し、楔部材を緊結位置（Ｐ２）に向けて下動させるように構成されており、前記保持手段は、前記枝部の遊動面に臨む固定壁と、該固定壁に沿って設けられたバネ線材から成る線材折曲体により構成され、前記線材折曲体は、固定壁の外側面に添接される弾性アームの先端部を前記遊動面に向けて弓状に屈曲することにより前記保持部を形成し、前記弾性アームの弾性変形を介して保持部を遊動面から離反する方向に変位させるように構成されて成る点にある。 Therefore, the means of the present invention to achieve the above object are a fastening device that uses a wedge member to connect a flange fixed to a support and a connecting fitting fixed to a connecting member, the connecting fitting forming a receiving portion between the upper jaw and the lower jaw into which the flange is inserted, and the wedge member has a wedge body portion and a branch portion that are inserted into the upper and lower jaw portions, respectively, arranged side by side and integrated together, and the lower end of the wedge body portion is driven into a fastening hole in the flange from a waiting position P1 at a predetermined height (h) from the upper surface of the lower jaw portion, and the wedge body portion is driven downward to a fastening position P2, and fastening is performed by moving the wedge body portion downward from the waiting position P1 at a predetermined height (h) from the upper surface of the lower jaw portion to a fastening position P2, and a stopper portion is protruded from the floating surface of the branch portion of the wedge member, and a holding portion is provided on a holding means built into the connecting fitting, and the stopper portion is held The wedge member is placed on the holding portion and its own weight is supported to hold the wedge member stationary in the standby position (P1), but when a downward external force is applied to the wedge member from the stationary state, the stopper portion pushes and displaces the holding portion, passing through and moving the wedge member downward toward the fastening position (P2). The holding means is composed of a fixed wall facing the floating surface of the branch portion and a wire bending body made of a spring wire provided along the fixed wall, and the wire bending body forms the holding portion by bending the tip of an elastic arm attached to the outer surface of the fixed wall in a bow shape toward the floating surface, and is configured to displace the holding portion in a direction away from the floating surface through elastic deformation of the elastic arm.

本発明の好ましい実施形態は、前記固定壁の外側面に前記弾性アームを弾力に抗して受け止める接支手段を形成し、弾性アームを受け止めることにより、保持部が遊動面を圧接しない位置で保持されるように構成している。 A preferred embodiment of the present invention is configured such that a support means is formed on the outer surface of the fixed wall to receive the elastic arm against its elastic force, and by receiving the elastic arm, the holding portion is held in a position where it does not press against the floating surface.

前記保持手段は、前記固定壁を含んで構成された周壁により、楔部材の枝部の上下移動を案内する案内通路を形成することが好ましい。 It is preferable that the holding means forms a guide passage for guiding the vertical movement of the branch portion of the wedge member by a peripheral wall including the fixed wall.

好ましくは、前記待機位置Ｐ１において、楔本体部の下端部は、上顎部の下面に形成された載置面から受入部の内部に向けて距離（ｔ）だけ突出させられると共に、該下端部にガイド部を形成しており、楔部材は、待機位置Ｐ１とした状態でフランジを受入部に向けて進入させたとき、前記ガイド部がフランジの縁部に当接して乗り上げることにより、下端部を前記載置面と面一にする退避位置Ｐ０に向けて上動され、下端部がフランジの緊結孔に臨まされたとき、自重により待機位置Ｐ１に向けて下動され、下端部を緊結孔に挿入係止するように構成されている。そして、前記保持手段の保持部に対して、楔部材の枝部は、ストッパ部の下側に下部遊動領域を形成しており、前記保持部と下部遊動領域は、相互に、前記待機位置Ｐ１と退避位置Ｐ０の間において楔部材が上下動することを許すように構成されている。 Preferably, in the standby position P1, the lower end of the wedge body protrudes from the placement surface formed on the lower surface of the upper jaw toward the inside of the receiving section by a distance (t), and a guide portion is formed at the lower end. When the flange is advanced toward the receiving section in the standby position P1 state, the guide portion abuts against and rides up the edge of the flange, so that the lower end is moved upward toward the retreat position P0 where the lower end is flush with the placement surface, and when the lower end faces the fastening hole of the flange, the wedge member is moved downward toward the standby position P1 by its own weight, and the lower end is inserted and locked into the fastening hole. And, with respect to the holding portion of the holding means, the branch portion of the wedge member forms a lower floating area below the stopper portion, and the holding portion and the lower floating area are configured to allow the wedge member to move up and down between the standby position P1 and the retreat position P0.

この際、前記距離（ｔ）は、フランジの厚さ（Ｔ）に対してｔ＜Ｔとするように構成することが好ましい。 In this case, it is preferable to configure the distance (t) so that t < T, where T is the thickness of the flange.

更に好ましくは、楔部材を待機位置Ｐ１としたとき、楔本体部の下端部と下顎部の間の空間の高さ（ｈ）をフランジの厚さ（Ｔ）に対してＴ≦ｈとするように構成されており、前記載置面から下向きに突出する下端部の突出距離（ｔ）を構成する下側距離（ｇ）と上側距離（ｅ）をｅ＜ｇとするように構成され、下端部のうち、下側距離（ｇ）に含まれる領域に前記ガイド部を形成し、上側距離（ｅ）に含まれる領域に係止部を形成し、楔部材を待機位置Ｐ１として上顎部の載置面をフランジに載置したとき、前記係止部がフランジの緊結孔に係止することにより、上顎部の横向き移動を阻止するように構成している。 More preferably, when the wedge member is in the standby position P1, the height (h) of the space between the lower end of the wedge body and the lower jaw is configured to be T≦h relative to the thickness (T) of the flange, the lower distance (g) and upper distance (e) constituting the protruding distance (t) of the lower end protruding downward from the mounting surface are configured to be e<g, the guide portion is formed in the area of the lower end included in the lower distance (g), and the locking portion is formed in the area of the upper distance (e), and when the wedge member is in the standby position P1 and the mounting surface of the upper jaw is placed on the flange, the locking portion locks into the fastening hole of the flange, thereby preventing lateral movement of the upper jaw.

前記ガイド部は、楔本体部の下端部において、下端中心に向かうほぼ円錐状となる円錐面又はほぼ球状となる球面により形成することが好ましい。 The guide portion is preferably formed at the lower end of the wedge body portion by a conical surface that is approximately conical toward the center of the lower end or a spherical surface that is approximately spherical.

本発明によれば、保持手段３７により楔部材１６を待機位置Ｐ１に位置した状態で静止させることができるので、長尺とされた連結部材１２の両端部に設けられた楔付きの連結金具１５、１５を所定間隔で立設された支柱１１のフランジ１３に接続する作業が簡単容易となる。 According to the present invention, the wedge member 16 can be stationary in the standby position P1 by the holding means 37, so that the work of connecting the wedge-equipped connecting fittings 15, 15 provided at both ends of the long connecting member 12 to the flanges 13 of the support pillars 11 erected at a predetermined interval can be simplified and made easy.

ところで、保持手段３７は、楔部材１６における枝部１６Ｂの遊動面３４に臨む固定壁４２を備えているので、該枝部１６Ｂの上下移動を好適に案内する。そして、固定壁４２の外側面に添接される弾性アーム４５と、前記遊動面３４に臨む保持部４６を設け、遊動面３４の所定位置に突設したストッパ部３６を保持部４６に載置させて楔部材１６の自重を支持することにより、楔部材を待機位置（Ｐ１）に静止させる構成に関して、弾性アーム４５及び保持部４６をバネ線材から成る線材折曲体３９により形成しているので、板バネ等に比して高強度に構成することが可能であり、しかも、静止状態の楔部材１６を緊結位置（Ｐ２）に向けて下動するための外力が与えられたとき、保持部４６は、屈曲傾斜部における線材表面にストッパ部３６の押動を受け、弾性アーム４５を弾性変形させることにより変位し、ストッパ部３６を好適に下方に向けて通過移動させる。この際、ストッパ部３６と保持部４６の接触面積は、保持部４６を形成する線材の表面により極小化されているので、抵抗のないスムースな移動を可能とする。 The holding means 37 is provided with a fixed wall 42 facing the floating surface 34 of the branch portion 16B of the wedge member 16, thereby favorably guiding the vertical movement of the branch portion 16B. The elastic arm 45 is attached to the outer surface of the fixed wall 42, and the holding part 46 faces the floating surface 34. The stopper part 36 protruding from a predetermined position on the floating surface 34 is placed on the holding part 46 to support the weight of the wedge member 16, and the wedge member is stopped at the standby position (P1). Since the elastic arm 45 and the holding part 46 are formed from a bent wire body 39 made of spring wire, it is possible to make it stronger than a leaf spring, etc., and when an external force is applied to move the stationary wedge member 16 downward toward the fastening position (P2), the holding part 46 is pushed by the stopper part 36 against the wire surface at the bent inclined part, and is displaced by elastically deforming the elastic arm 45, and the stopper part 36 is moved downward in an appropriate manner. At this time, the contact area between the stopper part 36 and the holding part 46 is minimized by the surface of the wire forming the holding part 46, allowing smooth movement without resistance.

そして、本発明の好ましい構成によれば、連結金具１５をフランジ１３に向けて移動し、受入部２０にフランジ１３を進入させるだけで、楔部材１６が待機位置（Ｐ１）から退避位置（Ｐ０）に向けて自動的に退避することによりフランジ１３の進入を好適に行わせ、連結金具１５をフランジ１３の所定位置に移動するだけで、楔部材１６が退避位置（Ｐ０）から再び待機位置（Ｐ１）に自動的に戻り、下端部２５ｅをフランジ１３の緊結孔１４に挿入させることができ、作業が更に簡単容易となる。 And, according to a preferred configuration of the present invention, by simply moving the connecting fitting 15 towards the flange 13 and inserting the flange 13 into the receiving portion 20, the wedge member 16 automatically retreats from the standby position (P1) towards the retracted position (P0), allowing the flange 13 to enter smoothly, and by simply moving the connecting fitting 15 to a predetermined position on the flange 13, the wedge member 16 automatically returns from the retracted position (P0) to the standby position (P1) again, allowing the lower end 25e to be inserted into the fastening hole 14 of the flange 13, making the operation even simpler and easier.

本発明の更に好ましい構成によれば、フランジ１３を受入部２０に進入させた後、上顎部１８の載置面３０をフランジ１３に載置すれば、前記下端部２５ｅがフランジ１３の緊結孔１４に挿入係止されるので、これにより、連結金具１５がフランジ１３から脱落することを阻止することができる。 According to a further preferred configuration of the present invention, after the flange 13 is inserted into the receiving portion 20, the mounting surface 30 of the upper jaw portion 18 is placed on the flange 13, so that the lower end portion 25e is inserted and locked into the fastening hole 14 of the flange 13, thereby preventing the connecting fitting 15 from falling off the flange 13.

従来技術を示しており、（Ａ）は連結金具の受入部にフランジを進入させた状態を示す断面図、（Ｂ）は楔部材を打ち込んだ後の緊結状態を示す断面図である。1A is a cross-sectional view showing a state in which a flange has been inserted into a receiving portion of a connecting fitting according to the prior art, and FIG. 1B is a cross-sectional view showing a fastened state after a wedge member has been driven in. 本発明の１実施形態に関して、連結金具と保持手段と楔部材を分離させた状態で示す斜視図である。FIG. 2 is a perspective view showing a connecting fitting, a retaining means, and a wedge member in a separated state according to one embodiment of the present invention. 実施形態に関して、保持手段を装備した連結金具の断面を示すと共に楔部材を分離させた状態で示す側面図である。FIG. 2 is a side view showing a cross section of a connector fitted with a retaining means and with the wedge member separated, in accordance with an embodiment; 実施形態に関する楔部材の構成を示しており、（Ａ）は楔部材と保持手段を示す斜視図、（Ｂ）は楔部材を下方から見た斜視図である。5A and 5B show the configuration of a wedge member according to an embodiment, in which FIG. 5A is a perspective view showing the wedge member and a holding means, and FIG. 5B is a perspective view of the wedge member as viewed from below. 実施形態に関する保持手段の構成を示しており、（Ａ）は分解状態を示す斜視図、（Ｂ）は組立状態を示す斜視図である。1A and 1B show the configuration of a holding means according to an embodiment, in which FIG. 1A is a perspective view showing an exploded state, and FIG. 1B is a perspective view showing an assembled state. 保持手段の作用を示しており、（Ａ）は弾性アームが接支手段に受止められた状態を示す断面図、（Ｂ）は弾性アームが弾性変形して保持部を変位させた状態を示す斜視図である。13A is a cross-sectional view showing a state in which the elastic arm is received by the support means, and FIG. 13B is a perspective view showing a state in which the elastic arm has elastically deformed to displace the holding portion. FIG. 楔部材が待機位置（Ｐ１）で静止した状態の連結金具と、支柱のフランジを示す断面図である。1 is a cross-sectional view showing a connecting fitting and a flange of a support pillar in a state in which a wedge member is stationary in a standby position (P1). FIG. 待機位置（Ｐ１）で静止した楔部材の枝部と保持手段の保持部の関係を示す縦断面図である。10 is a vertical cross-sectional view showing the relationship between the branch portions of the wedge member stationary at the standby position (P1) and the holding portion of the holding means. FIG. 楔部材を待機位置（Ｐ１）に静止させた状態の連結金具と、支柱のフランジの関係を示し、（Ａ）は受入部に向けて突出した楔本体部の下端部とフランジを示す断面図、（Ｂ）は楔本体部の下端部に形成されたガイド部と係止部を示す断面図である。The figure shows the relationship between the connecting fitting and the flange of the support pillar when the wedge member is stationary in the standby position (P1), where (A) is a cross-sectional view showing the lower end of the wedge main body portion protruding toward the receiving portion and the flange, and (B) is a cross-sectional view showing the guide portion and locking portion formed at the lower end of the wedge main body portion. 楔部材を待機位置（Ｐ１）に静止させた状態で連結金具を支柱のフランジに向けて移動させ、フランジを楔本体部の下端部に当接させた状態を示す断面図である。13 is a cross-sectional view showing the state in which, with the wedge member stationary in the standby position (P1), the connecting fitting is moved toward the flange of the support pillar, causing the flange to abut against the lower end of the wedge main body. FIG. 楔部材を待機位置（Ｐ１）に静止させた状態で連結金具を支柱のフランジに向けて移動させ、フランジを楔本体部の下端部に当接させた状態を示す平面図である。13 is a plan view showing the state in which, with the wedge member stationary in the standby position (P1), the connecting fitting is moved toward the flange of the support pillar and the flange is brought into contact with the lower end of the wedge main body. FIG. 楔部材が退避位置（Ｐ０）に退避させられた状態の連結金具と、支柱のフランジを示す断面図である。13 is a cross-sectional view showing the connecting fitting and the flange of the support pillar in a state in which the wedge member has been retracted to the retracted position (P0). FIG. 退避位置（Ｐ０）に退避させられた楔部材の枝部と保持手段の保持部の関係を示す縦断面図である。11 is a vertical cross-sectional view showing the relationship between the branch portions of the wedge member retracted to a retracted position (P0) and the holding portions of the holding means. FIG. 楔部材が退避位置（Ｐ０）から待機位置（Ｐ１）に下降して静止することにより下端部を緊結孔に係止した状態の連結金具と、支柱のフランジを示す断面図である。This is a cross-sectional view showing the connecting fitting and the flange of the support in a state in which the wedge member has descended from the retracted position (P0) to the standby position (P1) and come to rest, thereby engaging the lower end portion with the fastening hole. 退避位置（Ｐ０）から待機位置（Ｐ１）に下降して静止した楔部材の枝部と保持手段の保持部の関係を示す縦断面図である。11 is a vertical cross-sectional view showing the relationship between the branch portions of the wedge member that have descended from the retracted position (P0) to the standby position (P1) and come to rest and the holding portion of the holding means. FIG. 楔部材が緊結位置（Ｐ２）に下動させられた状態の連結金具と、支柱のフランジを示す断面図である。A cross-sectional view showing the connecting fitting and the flange of the support pillar in a state in which the wedge member has been lowered to the fastening position (P2). 緊結位置（Ｐ２）に下動させられた楔部材の枝部と保持手段の保持部の関係を示す縦断面図である。13 is a vertical cross-sectional view showing the relationship between the branch portions of the wedge member and the holding portions of the holding means when the branch portions are lowered to the fastening position (P2). FIG. 楔部材が解体位置（Ｐ３）に上動させられた状態の連結金具と、支柱のフランジを示す断面図である。A cross-sectional view showing the connecting fitting and the flange of the support pillar in a state in which the wedge member has been moved upward to the disassembly position (P3). 解体位置（Ｐ３）に上動させられた楔部材の枝部と保持手段の保持部の関係を示す縦断面図である。13 is a vertical cross-sectional view showing the relationship between the branch portion of the wedge member and the holding portion of the holding means when the branch portion is moved upward to the disassembly position (P3). FIG.

以下図面に基づいて本発明の好ましい実施形態を詳述する。 A preferred embodiment of the present invention will be described in detail below with reference to the drawings.

（基本的構成）
図示のように、楔緊結装置は、例えば仮設足場における支柱１１と横架材等の連結部材１２を着脱自在に連結するための装置であり、支柱１１の長手方向に間隔をあけて固設したフランジ１３に設けた緊結孔１４に対して、連結部材１２の端部に固設した連結金具１５を楔部材１６により緊結するように構成されている。 (Basic structure)
As shown in the figure, the wedge fastening device is a device for detachably connecting a support 11 and a connecting member 12 such as a cross member in, for example, temporary scaffolding, and is configured to fasten a connecting fitting 15 fixed to the end of the connecting member 12 with a wedge member 16 to fastening holes 14 provided in flanges 13 fixed at intervals along the longitudinal direction of the support 11.

連結金具１５は、連結部材１２に固設される基部１７から上顎部１８と下顎部１９を延設することにより、上下顎部の間に受入部２０を形成しており、上下顎部にそれぞれ上側の挿通孔２１と下側の挿通孔２２を設けており、受入部２０にフランジ１３を進入させたとき、フランジの緊結孔１４と上下顎部の挿通孔２１、２２を上下方向に連通させるように形成されている。尚、上顎部１８と下顎部１９の先端には、支柱１１の周面に沿う円弧面により形成された当接部１８ａ、１９ａが設けられている。 The connecting fitting 15 extends the upper jaw 18 and the lower jaw 19 from the base 17 fixed to the connecting member 12, forming a receiving portion 20 between the upper and lower jaws, with an upper insertion hole 21 and a lower insertion hole 22 provided in the upper and lower jaws, respectively, so that when the flange 13 is inserted into the receiving portion 20, the fastening hole 14 of the flange and the insertion holes 21, 22 of the upper and lower jaws are vertically connected. In addition, the tips of the upper jaw 18 and the lower jaw 19 are provided with abutment portions 18a, 19a formed by arcuate surfaces that follow the circumferential surface of the support 11.

楔部材１６は、前記の各孔２１、１４、２２に挿通自在な厚さの盤状体より形成され、上下方向の中間部により楔部２３を構成し、該楔部２３の上下に頭部２４と脚部２５を設けており、前記楔部２３は、腹部２３ａと背部２３ｂの間の幅寸法を下方に向けて次第に幅狭とするように形成されている。この際、腹部２３ａは、支柱１１の軸線にほぼ平行となるように形成され、これに対して背部２３ｂが傾斜するように形成されている。前記頭部２４は、脚部２５よりも分厚いブロック状に形成されている。 The wedge member 16 is formed from a plate-like body with a thickness that allows it to be freely inserted into each of the holes 21, 14, and 22, and the vertical middle portion forms a wedge portion 23, with a head portion 24 and legs 25 provided above and below the wedge portion 23, and the wedge portion 23 is formed so that the width between the abdomen 23a and the back portion 23b gradually narrows downward. In this case, the abdomen 23a is formed so as to be approximately parallel to the axis of the support 11, and the back portion 23b is formed so as to be inclined with respect to it. The head portion 24 is formed in a block shape that is thicker than the legs 25.

後述するように、連結金具１５の受入部２０にフランジ１３を進入させ、フランジの緊結孔１４の上下に上下顎部１８、１９の挿通孔２１、２２を臨ませ、これらの孔に楔部材１６を上から下に向けて挿通させた状態で、ハンマー等により殴打して下動させると、楔部材１６が緊結孔１４の接支縁部１４ａと挿通孔２１、２２の受縁部２１ａ、２２ａの間に圧入され、接支縁部４ａと受縁部２１ａ、２２ａの間隔を押し広げながら、連結金具１５を支柱１１に向けて前進移動させることにより、上下顎部１８、１９の当接部１８ａ、１９ａを支柱１１の表面に圧接状態で当接させる。これにより、フランジ１３と楔部材１６と連結金具１５と支柱１１の相互間における緊結状態が得られる。 As described later, the flange 13 is inserted into the receiving portion 20 of the connecting fitting 15, and the insertion holes 21, 22 of the upper and lower jaws 18, 19 are placed above and below the fastening hole 14 of the flange. The wedge member 16 is inserted from top to bottom into these holes, and then struck downward with a hammer or the like. The wedge member 16 is pressed into between the support edge 14a of the fastening hole 14 and the receiving edges 21a, 22a of the insertion holes 21, 22, and the connecting fitting 15 is moved forward toward the support 11 while pushing apart the space between the support edge 4a and the receiving edges 21a, 22a, causing the abutment portions 18a, 19a of the upper and lower jaws 18, 19 to abut against the surface of the support 11 in a pressed state. This results in a fastened state between the flange 13, the wedge member 16, the connecting fitting 15, and the support 11.

そして、この緊結状態から、ハンマーによる殴打等により楔部材１６を上動させると、緊結状態が解除される。 Then, from this tightened state, if the wedge member 16 is moved upward by hitting it with a hammer, the tightened state is released.

以上の基本的構成は、上述した従来技術の構成と概ね同様であるので、以下に、本発明の特徴を具体化した実施形態について説明する。 The above basic configuration is generally similar to that of the conventional technology described above, so below we will explain an embodiment that embodies the features of the present invention.

図２及び図３に示すように、連結金具１５は、基部１７の内部に前記受入部２０に隣接する空所部２６を形成し、該空所部２６から尾端部に向けて開口する開口部２７を備え、前記空所部２６の上下に位置して上側案内孔２８と下側案内孔２９を設けている。 As shown in Figures 2 and 3, the connecting fitting 15 has a void 26 formed inside the base 17 adjacent to the receiving portion 20, an opening 27 that opens from the void 26 toward the tail end, and an upper guide hole 28 and a lower guide hole 29 located above and below the void 26.

前記受入部２０は、上顎部１８の下面に形成された載置面３０と、下顎部１９の上面により、上下から区成されており、受入部２０の奥部には、載置面３０から下向きの受止め部３１が形成されている。 The receiving section 20 is divided from above and below by a mounting surface 30 formed on the underside of the upper jaw section 18 and the upper surface of the lower jaw section 19, and at the back of the receiving section 20, a receiving stopper section 31 is formed facing downward from the mounting surface 30.

（楔部材の構成）
図２ないし図４に示すように、楔部材１６は、頭部２４及び脚部２５を備えた楔本体部１６Ａと、枝部１６Ｂを並設一体化しており、楔本体部１６Ａと枝部１６Ｂは、脚部２５と枝部１６Ｂの上端部を相互に連結する横向きの連結部１６Ｃを介して一体化され、楔部材１６の全体が鍛造等により成形されている。 (Configuration of the wedge member)
As shown in Figures 2 to 4, the wedge member 16 is formed by integrating a wedge main body 16A having a head 24 and a leg 25 with a branch 16B arranged side by side, and the wedge main body 16A and the branch 16B are integrated via a horizontal connecting portion 16C that connects the upper ends of the leg 25 and the branch 16B to each other, and the entire wedge member 16 is formed by forging or the like.

楔部材１６は、連結金具１５の上下顎部１８、１９に対して、楔本体部１６Ａの脚部２５を上下の挿通孔２１、２２に挿通自在とされると共に、枝部１６Ｂを上下の案内孔２８、２９に挿通され、該枝部１６Ｂの下端部に挿着されたリベットの頭部等により抜止め手段３２が形成される（図７及び図８参照）。 The wedge member 16 is configured so that the legs 25 of the wedge body 16A can be freely inserted into the upper and lower insertion holes 21, 22 relative to the upper and lower jaws 18, 19 of the connecting fitting 15, and the branch 16B is inserted into the upper and lower guide holes 28, 29, and a retaining means 32 is formed by the head of a rivet or the like inserted into the lower end of the branch 16B (see Figures 7 and 8).

楔本体部１６Ａの下端部２５ｅは、下端中心に向かうほぼ円錐状となる円錐面により形成されたガイド部３３を設けている。これにより、ガイド部３３は、下端部２５ｅの全周に設けられている。尚、ガイド部３３は、円錐面に代えて、ほぼ球状となる球面により形成しても良い。 The lower end 25e of the wedge body 16A is provided with a guide portion 33 formed by a conical surface that is approximately conical toward the center of the lower end. As a result, the guide portion 33 is provided around the entire circumference of the lower end 25e. Note that instead of a conical surface, the guide portion 33 may be formed by a spherical surface that is approximately spherical.

楔部材１６の枝部１６Ｂは、幅方向の肉厚を（ｗ１）で示すように所定厚さに形成することにより、枝部１６Ｂの側面に上下方向に延びる遊動面３４を形成し、該遊動面３４の両側に沿って案内リブ３５、３５を形成している。遊動面３４の所定位置には案内リブ３５、３５を連結する横向きのリブにより形成されたストッパ部３６が設けられている。従って、ストッパ部３６を含む幅方向の肉厚（ｗ２）は、遊動面３４の部分の幅方向の肉厚（ｗ１）に対して、ｗ２＞ｗ１とされ、ストッパ部３６により凸部が形成されている。これにより、遊動面３４は、ストッパ部３６の上下に延びる上側遊動面３４ａと下側遊動面３４ｂに分割された構成とされている。 The branch 16B of the wedge member 16 is formed with a predetermined widthwise thickness (w1), forming a free-floating surface 34 extending vertically on the side of the branch 16B, and guide ribs 35, 35 are formed along both sides of the free-floating surface 34. A stopper portion 36 formed by a horizontal rib connecting the guide ribs 35, 35 is provided at a predetermined position on the free-floating surface 34. Therefore, the widthwise thickness (w2) including the stopper portion 36 is greater than the widthwise thickness (w1) of the free-floating surface 34, and a convex portion is formed by the stopper portion 36. As a result, the free-floating surface 34 is divided into an upper free-floating surface 34a and a lower free-floating surface 34b that extend vertically above and below the stopper portion 36.

（保持手段の構成）
前記連結金具１５の空所部２６には保持手段３７が設けられている。図２ないし図６に示すように、保持手段３７は、金属板を折曲することにより形成された角筒状の筒体３８と、バネ線材を折曲することにより形成された線材折曲体３９により構成されている。 (Configuration of holding means)
A retaining means 37 is provided in the hollow portion 26 of the connecting fitting 15. As shown in Figures 2 to 6, the retaining means 37 is composed of a square cylindrical body 38 formed by bending a metal plate, and a bent wire body 39 formed by bending a spring wire.

前記筒体３８は、角筒状の周壁により、楔部材１６の枝部１６Ｂを上下方向に移動自在に案内する案内通路４０を形成しており、角筒状の周壁は、空所２６に内装されたとき、開口部２７に臨む背面壁４１と、該背面壁の両側から折曲されて枝部１６Ｂの側面に臨む一対の固定壁４２、４２と、該固定壁から更に折曲されて受入部２０に臨む正面壁４３により構成されている。 The cylindrical body 38 has a rectangular cylindrical peripheral wall that forms a guide passage 40 that guides the branch portion 16B of the wedge member 16 to move freely in the vertical direction. When the cylindrical peripheral wall is installed inside the cavity 26, the rectangular cylindrical peripheral wall is composed of a rear wall 41 that faces the opening 27, a pair of fixed walls 42, 42 that are bent from both sides of the rear wall to face the side of the branch portion 16B, and a front wall 43 that is further bent from the fixed wall to face the receiving portion 20.

案内通路４０に枝部１６Ｂを挿通したとき、筒体３８の固定壁４２、４２の内法間隔寸法（ｗ４）は、枝部１６Ｂの案内リブ３５、３５を含む部分の肉厚（ｗ２）を受入れるように、ｗ４＞ｗ２に形成されているが、枝部１６Ｂをガタツキのない状態で案内するため、図６（Ａ）に示すように、固定壁４２と案内リブ３５の間の隙間（ｓ）は、可及的小さくなるように形成されている。 When the branch 16B is inserted into the guide passage 40, the inside clearance dimension (w4) of the fixed walls 42, 42 of the cylinder 38 is formed so that w4 > w2 to accommodate the thickness (w2) of the portion including the guide ribs 35, 35 of the branch 16B. However, in order to guide the branch 16B without any wobble, the gap (s) between the fixed wall 42 and the guide rib 35 is formed as small as possible, as shown in Figure 6 (A).

また、案内通路４０に枝部１６Ｂを挿通した状態において、枝部１６Ｂの腹部１６ｂが筒体３８の正面壁４３に近接して臨まされ、上下移動を案内される。 In addition, when the branch 16B is inserted through the guide passage 40, the abdomen 16b of the branch 16B faces closely to the front wall 43 of the cylinder 38, and is guided in its vertical movement.

前記線材折曲体３９は、前記筒体３８の背面壁４１を横断する固定部４４と、該固定部４４の両端から折曲されて前記固定壁４２、４２に沿わされる一対の弾性アーム４５、４５と、該弾性アームの先端部を前記案内通路４０に向けて弓状に屈曲することにより形成された保持部４６により構成されており、前記固定部４４は、筒体３８の背面壁４１に対して固定板等の固定手段４７をリベット等のファスナ４７ａで固着することにより固定される。 The bent wire body 39 is composed of a fixed portion 44 that crosses the rear wall 41 of the cylindrical body 38, a pair of elastic arms 45, 45 that are bent from both ends of the fixed portion 44 and aligned with the fixed walls 42, 42, and a retaining portion 46 formed by bending the tip of the elastic arm into a bow shape toward the guide passage 40, and the fixed portion 44 is fixed to the rear wall 41 of the cylindrical body 38 by fastening a fixing means 47 such as a fixing plate with a fastener 47a such as a rivet.

前記固定壁４２、４２にはスリット又は窓孔等の通口４２ａが開設されており、一対の保持部４６、４６は、弓状の屈曲部のうち相互に対向する突出部４６ａを通口４２ａから案内通路４０の内部に向けて突出している。 The fixed walls 42, 42 have openings 42a such as slits or window holes, and the pair of retaining portions 46, 46 have opposing protrusions 46a of their arch-shaped bends protruding from the openings 42a toward the inside of the guide passage 40.

この点について、保持部４６の屈曲形状に関する「弓状」の語は、限定的に解すべき意味のものではなく、図示のような「円弧状」や、その他の「Ｕ字状」又は「く字状」等を含む意味であり、要するに、図示のように、遊動面３４に最も近接する突出部４６ａの上下から、次第に遊動面３４から離れる方向に傾斜する上下傾斜部４６ｂ、４６ｃが連ねて形成されているものであれば良い。 In this regard, the term "arch-shaped" in relation to the curved shape of the retaining portion 46 should not be interpreted in a restrictive sense, but rather includes the "arc-shaped" shape as shown in the figure, as well as other "U-shaped" or "L-shaped" shapes. In short, as shown in the figure, it is sufficient that the retaining portion 46 is formed by a series of upper and lower inclined portions 46b, 46c that gradually incline in a direction away from the floating surface 34 from above and below the protruding portion 46a that is closest to the floating surface 34.

図示実施形態の場合、前記線材折曲体３９の弾性アーム４５は、固定部４４から折曲されて固定壁４２に沿い横向きに延びる第１アーム部４５ａと、該第１アーム部から前記通口４２ａに向けて上向きに延びる第２アーム部４５ｂを備えており、第２アーム部４５ｂの先端に前記保持部４６を折曲形成している。 In the illustrated embodiment, the elastic arm 45 of the wire bent body 39 has a first arm portion 45a that is bent from the fixed portion 44 and extends laterally along the fixed wall 42, and a second arm portion 45b that extends upward from the first arm portion toward the passage opening 42a, and the holding portion 46 is bent and formed at the tip of the second arm portion 45b.

この際、線材折曲体３９は、一対の弾性アーム４５、４５を弾性変形した拡開状態として、その間に固定壁４２、４２を嵌め入れることが好ましい。つまり、弾性アーム４５は、常時、固定壁４２に対して、弾発付勢状態で弾接されるように構成され、固定壁４２の外側面は、弾性アーム４５を弾力に抗して受け止める接支手段４８を形成している。 In this case, it is preferable that the wire bending body 39 has a pair of elastic arms 45, 45 in an elastically deformed, expanded state, and the fixed walls 42, 42 are fitted between them. In other words, the elastic arms 45 are configured to always be in elastic contact with the fixed wall 42 in a resilient biased state, and the outer surface of the fixed wall 42 forms a support means 48 that receives the elastic arms 45 against the elastic force.

これにより、図６（Ａ）に示すように、弾性アーム４５、４５が接支手段４８、４８に受け止められることにより、保持部４６、４６の突出部４６ａ、４６ａは、案内通路４０の内部に向けて突出した状態で、相互の間隔が間隔距離（ｗ３）を保持するように構成されている。 As a result, as shown in FIG. 6(A), the elastic arms 45, 45 are received by the support means 48, 48, and the protrusions 46a, 46a of the holding portions 46, 46 are configured to protrude toward the inside of the guide passage 40, while maintaining the mutual spacing at the spacing distance (w3).

前記間隔距離（ｗ３）は、上述した枝部１６Ｂの遊動面３４における肉厚（ｗ１）と、ストッパ部３６における肉厚（ｗ２）に対して、ｗ１≦ｗ３＜ｗ２とするように構成されている。 The spacing distance (w3) is configured such that w1≦w3<w2, where w1 is the thickness at the floating surface 34 of the branch portion 16B and w2 is the thickness at the stopper portion 36.

従って、保持手段３７における筒体３８の案内通路４０に楔部材１６の枝部１６Ｂを挿通させたとき、図６（Ａ）に示すように、枝部１６Ｂの遊動面３４が保持部４６に臨ませられている状態では、枝部１６Ｂは、自由に上下動することが許されている。つまり、固定壁４２と案内リブ３５の間の隙間（ｓ）により、枝部１６Ｂには僅かなガタツキが生じるため、保持部４６は、遊動面３４に接触する可能性はあるが、遊動面３４を弾性保持するものではない。 Therefore, when the branch 16B of the wedge member 16 is inserted through the guide passage 40 of the cylinder 38 in the holding means 37, as shown in FIG. 6(A), with the floating surface 34 of the branch 16B facing the holding portion 46, the branch 16B is allowed to move freely up and down. In other words, because the gap (s) between the fixed wall 42 and the guide rib 35 causes slight wobble in the branch 16B, the holding portion 46 may come into contact with the floating surface 34, but it does not elastically hold the floating surface 34.

そこで、後述するように、枝部１６Ｂのストッパ部３６が保持部４６に載置されたとき、保持部４６は、楔部材１６の自重を支持し、枝部１６Ｂを静止させるように構成されている。つまり、楔部材１６の重量により枝部１６Ｂのストッパ部３６に作用する下向き荷重よりも、保持部４６を前記間隔距離（ｗ３）の位置に保持するように作用する弾性アーム４５の弾力が勝るように構成されている。 As described below, when the stopper portion 36 of the branch portion 16B is placed on the holding portion 46, the holding portion 46 is configured to support the weight of the wedge member 16 and to hold the branch portion 16B stationary. In other words, the elasticity of the elastic arm 45, which acts to hold the holding portion 46 at the spacing distance (w3), is configured to be greater than the downward load acting on the stopper portion 36 of the branch portion 16B due to the weight of the wedge member 16.

しかしながら、ストッパ部３６が保持部４６に載置されて枝部１６Ｂが静止した状態から、楔部材１６に下向きの外力を与えたときは、図６（Ｂ）に示すように、ストッパ部３７が保持部４６を押動して変位させることにより通過し、下動させるように構成されている。つまり、下向きの外力を受けたストッパ部３６は、上側傾斜部４６ｂをガイドとして保持部４６を押し退け、保持部４６は、弾性アーム４５の弾性変形を介して後退する。この際、図示実施形態の場合、弾性アーム４５は、第１アーム４５ａを接支手段４８から離反させる方向の弾性変形と、第２アーム４５ｂを第１アーム４５ａの軸線廻りで回動する方向の弾性変形が可能とされているが、少なくとも、その一方の弾性変形が可能となるように構成されていれば良い。 However, when a downward external force is applied to the wedge member 16 from a state in which the stopper portion 36 is placed on the holding portion 46 and the branch portion 16B is stationary, the stopper portion 37 is configured to push and displace the holding portion 46, passing through and moving it downward, as shown in FIG. 6(B). In other words, the stopper portion 36 receiving the downward external force pushes the holding portion 46 away using the upper inclined portion 46b as a guide, and the holding portion 46 retreats through the elastic deformation of the elastic arm 45. At this time, in the illustrated embodiment, the elastic arm 45 is capable of elastic deformation in a direction that moves the first arm 45a away from the support means 48 and in a direction that rotates the second arm 45b around the axis of the first arm 45a, but it is sufficient that the elastic deformation is configured to be capable of at least one of these.

（楔部材の枝部と保持手段の関係）
図７ないし図９に示すように、楔部材１６は、連結金具１５の上下顎部１８、１９に対して、楔本体部１６Ａの脚部２５を上下の挿通孔２１、２２に挿通自在とされると共に、枝部１６Ｂを上下の案内孔２８、２９と保持手段３７の筒体３８に挿通され、該枝部１６Ｂの下端部に挿着されたリベットの頭部等により抜止め手段３２を設けている。 (Relationship between the branch of the wedge member and the holding means)
As shown in Figures 7 to 9, the wedge member 16 is configured so that the legs 25 of the wedge main body 16A can be freely inserted into the upper and lower insertion holes 21, 22 relative to the upper and lower jaws 18, 19 of the connecting fitting 15, and the branch portion 16B is inserted into the upper and lower guide holes 28, 29 and the cylindrical body 38 of the retaining means 37, and a pull-out prevention means 32 is provided by the head of a rivet or the like inserted into the lower end of the branch portion 16B.

上下方向の移動位置に関して、楔部材１６は、脚部２５の下端部２５ｅが上顎部１８の載置面３０と面一とされる位置を退避位置（Ｐ０）（図１２参照）とし、該下端部２５ｅが載置面３０から下向きに距離（ｔ）だけ突出させられる位置を待機位置（Ｐ１）（図７及び図９参照）とし、待機位置から下動してフランジ１３の緊結孔１４に打ち込み緊結された位置を緊結位置（Ｐ２）（図１６参照）とし、前記抜止め手段４３が下側の案内孔２９の縁部に当接した状態とされ下端部２５ｅが載置面３０よりも上方に移動した位置を解体位置（Ｐ３）（図１８参照）としている。 Regarding the vertical movement positions, the wedge member 16 has a retracted position (P0) (see FIG. 12) where the lower end 25e of the leg 25 is flush with the support surface 30 of the upper jaw 18, a standby position (P1) (see FIG. 7 and FIG. 9) where the lower end 25e protrudes downward from the support surface 30 by a distance (t), a fastening position (P2) (see FIG. 16) where it moves downward from the standby position and is fastened by being driven into the fastening hole 14 of the flange 13, and a dismantling position (P3) (see FIG. 18) where the anti-pullout means 43 abuts against the edge of the lower guide hole 29 and the lower end 25e moves above the support surface 30.

楔部材１６が退避位置（Ｐ０）とされたとき、枝部１６Ｂの下側遊動面３４ｂが保持手段３７の保持部４６に臨まされており、ストッパ部３６は保持部４６の上方に位置している。 When the wedge member 16 is in the retracted position (P0), the lower floating surface 34b of the branch portion 16B faces the holding portion 46 of the holding means 37, and the stopper portion 36 is located above the holding portion 46.

楔部材１６が待機位置（Ｐ１）とされたとき、枝部１６Ｂのストッパ部３６が保持手段３７の保持部４６に載置され、楔部材１６を静止させている。図７ないし図９に示すように、待機位置（Ｐ１）とされたとき、フランジ１３の厚さ（Ｔ）と受入部２０の上下幅（Ｈ）は、Ｈ＞ｔとなるように構成され、これに対して、下端部２５ｅが下向きに突出する距離（ｔ）は、Ｔ＞ｔとなるように構成されている。
このとき、下端部２５ｅは、下顎部１９の上面から所定高さ（ｈ）の位置で静止されており、図示実施形態の場合、高さ（ｈ）は、フランジ１３の厚さ（Ｔ）とほぼ等しく、Ｔ≦ｈとするように構成されているが、ｈ＜Ｔ＜ｈ＋ｔとするように構成しても良い。 When the wedge member 16 is in the standby position (P1), the stopper portion 36 of the branch portion 16B is placed on the holding portion 46 of the holding means 37, stationarying the wedge member 16. As shown in Figures 7 to 9, when in the standby position (P1), the thickness (T) of the flange 13 and the vertical width (H) of the receiving portion 20 are configured to be H>t, and the distance (t) that the lower end portion 25e projects downward is configured to be T>t.
At this time, the lower end portion 25e is resting at a position of a predetermined height (h) from the upper surface of the lower jaw portion 19. In the illustrated embodiment, the height (h) is approximately equal to the thickness (T) of the flange 13, and is configured so that T≦h, but it may also be configured so that h<T<h+t.

円錐面又は球面により形成された下端部２５ｅのガイド部３３は、突出距離（ｔ）に含まれる下端部２５ｅの全領域にわたり設けても良いが、図示実施形態の場合、図９（Ｂ）に示すように、下端部(25e) の突出距離（ｔ）を構成する下側距離（ｇ）と上側距離（ｅ）をｅ＜ｇとするように構成することにより、下端部２５ｅのうち、下側距離（ｇ）に含まれる領域に前記ガイド部３３を形成し、上側距離（ｅ）に含まれる領域に係止部４９を形成している。 The guide portion 33 of the lower end 25e, which is formed by a conical or spherical surface, may be provided over the entire area of the lower end 25e included in the protruding distance (t), but in the illustrated embodiment, as shown in FIG. 9(B), the lower distance (g) and upper distance (e) that constitute the protruding distance (t) of the lower end (25e) are configured so that e<g, so that the guide portion 33 is formed in the area of the lower end 25e that is included in the lower distance (g), and the locking portion 49 is formed in the area of the upper distance (e).

後述するように、連結金具１５とフランジ１３の横向きの相対移動に関して、ガイド部３３は、フランジ１３の縁部に当接して乗り上げ方向に案内するガイドを構成している。これに対して、係止部４９は、フランジ１３の縁部に当接したとき、該縁部を受止め、乗り上げられることなく係止するように構成されている。 As described below, with regard to the relative lateral movement between the connecting fitting 15 and the flange 13, the guide portion 33 constitutes a guide that abuts against the edge of the flange 13 and guides it in the direction of climbing up. In contrast, the locking portion 49 is configured to receive the edge of the flange 13 when it abuts against it, and lock it in place without being climbed up.

楔部材１６が緊結位置（Ｐ２）とされたとき、枝部１６Ｂのストッパ部３６は、保持手段３７の保持部４６を通過して下方位置まで下動されており、枝部１６Ｂの上側遊動面３４ａが保持部４６に臨まされている。 When the wedge member 16 is in the fastening position (P2), the stopper portion 36 of the branch portion 16B passes through the holding portion 46 of the holding means 37 and is lowered to a lower position, so that the upper free surface 34a of the branch portion 16B faces the holding portion 46.

楔部材１６が解体位置（Ｐ３）とされたとき、枝部１６Ｂのストッパ部３６は、保持手段３７の保持部４６を通過して上方位置まで上されており、枝部１６Ｂの下側遊動面３４ｂが保持部４６に臨まされている。緊結位置（Ｐ２）から解体位置（Ｐ３）に向けて楔部材１６を上動させるとき、ストッパ部３６は、保持部４６の下側傾斜部４６ｂをガイドとして保持部４６を押し退け、保持部４６を弾性アーム４５の弾性変形を介して後退させることにより、上方に移動する。 When the wedge member 16 is in the dismantling position (P3), the stopper portion 36 of the branch portion 16B passes through the holding portion 46 of the holding means 37 and is raised to an upper position, with the lower floating surface 34b of the branch portion 16B facing the holding portion 46. When the wedge member 16 is moved upward from the fastening position (P2) to the dismantling position (P3), the stopper portion 36 pushes the holding portion 46 aside using the lower inclined portion 46b of the holding portion 46 as a guide, and moves upward by causing the holding portion 46 to retreat via elastic deformation of the elastic arm 45.

（作用）
以下、上記のように構成された緊結装置の作用を説明する。 (Action)
The operation of the fastening device constructed as above will now be described.

（事前工程）
連結金具１５をフランジ１３に接続するに先立ち、楔部材１６は、図７及び図８に示すように、待機位置（Ｐ１）に位置させられている。この状態で、楔部材１６は、自重によりストッパ部３６が保持部４６に載置された状態で当接することにより静止しており、楔本体部１６Ａにおける脚部２５の下端部２５ｅを載置面３０から下向きに距離（ｔ）だけ突出させている。 (Preliminary process)
Prior to connecting the connecting fitting 15 to the flange 13, the wedge member 16 is positioned in a standby position (P1) as shown in Figures 7 and 8. In this state, the wedge member 16 is stationary due to its own weight, with the stopper portion 36 abutting against the retaining portion 46 while placed on it, and the lower end portion 25e of the leg portion 25 of the wedge main body portion 16A protrudes downward from the placement surface 30 by a distance (t).

（載置工程）
緊結作業を行うため、連結金具１５をフランジ１３の側方に臨ませた状態からフランジ１３に向けて横方向に移動させ、受入部２０にフランジ１３を進入させると共に、上顎部１８の載置面３０をフランジ１３に載置する工程を図９ないし図１５に示している。 (Placement process)
To perform the fastening operation, the connecting fitting 15 is moved laterally from a position facing the side of the flange 13 toward the flange 13, the flange 13 is inserted into the receiving portion 20, and the supporting surface 30 of the upper jaw portion 18 is placed on the flange 13, as shown in Figures 9 to 15.

上下顎部１８、１９の間における受入部２０の開口をフランジ１３に向けて前進させるときの状態を図９に示している。 Figure 9 shows the state when the opening of the receiving portion 20 between the upper and lower jaw portions 18, 19 is advanced toward the flange 13.

フランジ１３に対して下顎部１９が所定位置よりもやや上方位置に保持され、フランジ１３の縁部に当接するように前進させられたときは、図９（Ａ）に示すように、下顎部１９の先端傾斜部１９ｂがフランジ１３の縁部に当接して摺動することにより、ラインＬ１で示すように下顎部１９の上面がフランジ１３の下面に一致する方向に下顎部１９の姿勢を制御する。そこで、鎖線で示すように、フランジ１３の下面よりも下顎部１９の上面がやや下方に位置するように姿勢を制御した状態で前進させると、下端部２５ｅのガイド部３３がフランジ１３の縁部に当接させられる。 When the lower jaw 19 is held at a position slightly above a predetermined position relative to the flange 13 and advanced so as to abut against the edge of the flange 13, as shown in FIG. 9(A), the tip inclined portion 19b of the lower jaw 19 abuts against the edge of the flange 13 and slides, thereby controlling the posture of the lower jaw 19 in a direction such that the upper surface of the lower jaw 19 coincides with the lower surface of the flange 13, as shown by line L1. Therefore, when the lower jaw 19 is advanced while its posture is controlled so that the upper surface of the lower jaw 19 is positioned slightly lower than the lower surface of the flange 13, as shown by the dashed line, the guide portion 33 of the lower end 25e abuts against the edge of the flange 13.

反対に、フランジ１３に対して下顎部１９が所定位置よりもやや下方位置に保持されて前進させられたときは、図９（Ｂ）に示すように、楔部材１６の下端部２５ｅがフランジ１３の縁部に当接する。図示のように、係止部４９がフランジ１３の縁部に当接したときは、受入部２０に対するフランジ１３の進入が阻止されるので、これを作業者が触感で感知して連結金具１５を少しだけ持ち上げてやると、下端部２５ｅのガイド部３３がフランジ１３の縁部に当接させられる。 Conversely, when the lower jaw 19 is held slightly below the specified position relative to the flange 13 and advanced, the lower end 25e of the wedge member 16 abuts against the edge of the flange 13, as shown in Figure 9 (B). As shown, when the locking portion 49 abuts against the edge of the flange 13, the flange 13 is prevented from entering the receiving portion 20, and when the worker senses this by touch and slightly lifts the connecting fitting 15, the guide portion 33 of the lower end 25e abuts against the edge of the flange 13.

そこで、図１０及び図１１に示すように、楔部材１６は、受入部２０に進入しようとするフランジ１３の縁部に対して、その進入を妨げる位置に下端部２５ｅのガイド部３３を位置させているが、ガイド部３３は、フランジ１３の縁部に当接した状態で前進することにより、縁部を乗り上げる方向に案内される。 As shown in Figures 10 and 11, the wedge member 16 positions the guide portion 33 of the lower end portion 25e in a position that prevents the edge of the flange 13 from entering the receiving portion 20, but the guide portion 33 moves forward while abutting the edge of the flange 13, and is guided in the direction of climbing over the edge.

このため、図１２及び図１３に示すように、フランジ１３の縁部の当接を受けることにより、ガイド部３３を縁部に乗り上げさせながら、楔部材１６は、待機位置（Ｐ１）から退避位置（Ｐ０）に向けて移動し、載置面３０をフランジ１３の上面に載置した状態で所定位置まで滑動させることができる。ガイド部３３の乗り上げによる楔部材１６の上動は、上述のように、遊動面３４を構成する下側遊動面３４ｂが保持部４６の抵抗を受けることなく円滑に上動することにより行われる。 As a result, as shown in Figures 12 and 13, the wedge member 16 moves from the standby position (P1) toward the retracted position (P0) while the guide portion 33 rides up on the edge of the flange 13 by contacting the edge, and can slide to a predetermined position with the mounting surface 30 placed on the upper surface of the flange 13. The upward movement of the wedge member 16 due to the guide portion 33 riding up is achieved by the lower floating surface 34b constituting the floating surface 34 moving upward smoothly without resistance from the holding portion 46, as described above.

そこで、退避位置（Ｐ０）に位置する楔部材１６は、下端部２５ｅがフランジ１３の緊結孔１４に臨まされると、自重により下降し、図１４及び図１５に示すように、ストッパ部３６が保持部４６に当接した位置、つまり、再び待機位置（Ｐ１）で停止し、静止させられる。 Then, when the lower end 25e of the wedge member 16, which is positioned in the retracted position (P0), faces the fastening hole 14 of the flange 13, it descends under its own weight and stops and comes to rest again at the standby position (P1) where the stopper portion 36 abuts against the holding portion 46, as shown in Figures 14 and 15.

このように、連結金具１５をフランジ１３に向けて移動させ、受入部２０にフランジ１３を進入させるだけで、楔部材１６が待機位置（Ｐ１）から退避位置（Ｐ０）に向けて自動的に退避することによりフランジ１３の進入を好適に行わせることができる。しかも、上顎部１８の載置面３０がフランジ１３の上面を滑動することにより、連結金具１５を所定位置に移動するだけで、楔部材１６が退避位置（Ｐ０）から再び待機位置（Ｐ１）に自動的に戻り、下端部２５ｅがフランジ１３の緊結孔１４に挿入される。 In this way, simply by moving the connecting fitting 15 towards the flange 13 and inserting the flange 13 into the receiving portion 20, the wedge member 16 automatically retracts from the standby position (P1) towards the retracted position (P0), allowing the flange 13 to be inserted smoothly. Moreover, as the mounting surface 30 of the upper jaw portion 18 slides on the upper surface of the flange 13, simply by moving the connecting fitting 15 to a specified position, the wedge member 16 automatically returns from the retracted position (P0) to the standby position (P1) again, and the lower end portion 25e is inserted into the fastening hole 14 of the flange 13.

この際、上述のように、下端部２５ｅに係止部４９を設けておけば、該係止部４９が緊結孔１４の上縁に係止され、載置面３０がフランジ１３の上面から退避方向に滑動することを阻止するので、高所作業中に連結金具１５がフランジ１３から脱落することを防止することができる。 In this case, if a locking portion 49 is provided at the lower end 25e as described above, the locking portion 49 will lock onto the upper edge of the fastening hole 14, preventing the mounting surface 30 from sliding away from the upper surface of the flange 13, thereby preventing the connecting fitting 15 from falling off the flange 13 while working at height.

（緊結工程）
待機位置（Ｐ１）で静止している楔部材１６は、頭部２４をハンマーの殴打等により強く押下すると、図１６及び図１７に示すように、緊結位置（Ｐ２）まで下動され、緊結状態を形成する。 (Binding process)
When the head 24 of the wedge member 16, which is stationary in the standby position (P1), is strongly pressed down by hitting it with a hammer or the like, it is moved down to the fastening position (P2) as shown in Figures 16 and 17, and a fastening state is formed.

この際、枝部１６Ｂは、ストッパ部３６が保持部４６を押動し、弾性アーム４５の弾性変形を介して変位させることにより、通過して下動し、保持部４６は、遊動面３４の上側遊動面３４ａに臨まされることにより元の位置に復帰する。 At this time, the stopper portion 36 pushes the retaining portion 46, displacing it through the elastic deformation of the elastic arm 45, causing the branch portion 16B to pass through and move downward, and the retaining portion 46 returns to its original position by facing the upper floating surface 34a of the floating surface 34.

（解体工程）
構築された仮設足場の解体に際して、連結金具１５をフランジ１３から離脱させる場合には、図１８及び図１９に示すように、下側の案内孔２９から下方に突出した枝部１６Ｂの下端部をハンマーの殴打等により強く押上すると、下端部の抜止め手段３２が下側の案内孔２９の縁部に当接するまで上動し、楔部材１６を解体位置（Ｐ３）に移動する。これにより、楔本体部１６Ａの下端部２５ｅがフランジ１３の緊結孔１４から抜き出され、連結金具１５をフランジ１３から引き離すことが可能となる。 (Dismantling process)
When dismantling the constructed temporary scaffolding, in order to detach the connecting fitting 15 from the flange 13, as shown in Figures 18 and 19, when the lower end of the branch portion 16B protruding downward from the lower guide hole 29 is pushed up strongly by hitting it with a hammer or the like, the anti-pullout means 32 at the lower end moves up until it abuts against the edge of the lower guide hole 29, moving the wedge member 16 to the dismantling position (P3). This causes the lower end 25e of the wedge body portion 16A to be pulled out of the fastening hole 14 of the flange 13, making it possible to pull the connecting fitting 15 away from the flange 13.

ところで、図示実施形態の場合、楔部材１６が緊結位置（Ｐ２）から解体位置（Ｐ３）に上動したとき、ストッパ部３６が保持部４６を変位させることにより通過して上動した後、保持部４６は、遊動面３４の下側遊動面３４ｂに臨まされることにより元の位置に復帰する。従って、楔部材１６は、解体位置（Ｐ３）から自重により、ストッパ部３６が保持部４６に載置される位置、つまり、待機位置（Ｐ１）まで下動して停止させられ、楔部材１６の下端部２５ｅが再びフランジ１３の緊結孔１４に挿入される。 In the illustrated embodiment, when the wedge member 16 moves upward from the fastening position (P2) to the disassembly position (P3), the stopper portion 36 displaces the retaining portion 46, passes through it, and then the retaining portion 46 returns to its original position by facing the lower floating surface 34b of the floating surface 34. Therefore, the wedge member 16 moves downward from the disassembly position (P3) by its own weight to a position where the stopper portion 36 is placed on the retaining portion 46, that is, the standby position (P1), where it is stopped, and the lower end portion 25e of the wedge member 16 is inserted again into the fastening hole 14 of the flange 13.

このため、解体作業時においても、連結金具１５は、下端部２５ｅの係止部４９を緊結孔１４の上縁に係止するので、載置面３０がフランジ１３の上面に沿って滑動することは阻止されている。 As a result, even during dismantling work, the connecting fitting 15 has the locking portion 49 at the lower end 25e locked to the upper edge of the fastening hole 14, preventing the mounting surface 30 from sliding along the upper surface of the flange 13.

そこで、連結金具１５をフランジ１３から引き離すときは、下顎部１８がフランジ１３の下面に当接するまで連結金具１５を持ち上げれば、前記下端部２５ｅが緊結孔１４から上方に脱するので、その状態から連結金具１５を横向きに移動させれば良い。 Therefore, when pulling the connecting fitting 15 away from the flange 13, if the connecting fitting 15 is lifted up until the lower jaw portion 18 abuts against the underside of the flange 13, the lower end portion 25e will come out upward from the fastening hole 14, and then the connecting fitting 15 can be moved sideways from that state.

この際、下端部２５ｅの全体を緊結孔１４の上方に脱出させなくても、少なくとも係止部４９を脱出させれば良い。ガイド部３３は、緊結孔１４に挿入されたままでも、上述のように、連結金具１５とフランジ１３の間における相対的な横向き移動により、緊結孔１４の縁部に当接して乗り上げ移動するので、これにより、受入部２０がフランジ１３から引き離されることを可能にする。 At this time, it is not necessary to release the entire lower end 25e above the fastening hole 14; at least the locking portion 49 needs to be released. Even if the guide portion 33 remains inserted in the fastening hole 14, as described above, the relative lateral movement between the connecting fitting 15 and the flange 13 causes the guide portion 33 to abut against and move up the edge of the fastening hole 14, thereby allowing the receiving portion 20 to be pulled away from the flange 13.

このように、足場構築時における連結金具１５をフランジ１３に接続するときだけでなく、足場解体時における連結金具１５をフランジ１３から引き離すときにも、長尺とされた連結部材１２の両端部に設けられた楔付きの連結金具１５、１５の取り扱い作業が簡単容易となり、作業中に連結金具１５がフランジ１３から脱落する危険を回避することができる。 In this way, the wedge-equipped connecting fittings 15, 15 at both ends of the long connecting member 12 can be easily handled not only when connecting the connecting fittings 15 to the flange 13 during construction of the scaffolding, but also when pulling the connecting fittings 15 away from the flange 13 during dismantling of the scaffolding, and the risk of the connecting fittings 15 falling off the flange 13 during work can be avoided.

上記の図示実施形態は、一対の弾性アーム４５、４５と一対の保持部４６、４６を設けた保持手段３７を示しているが、本発明は、必ずしも一対を必要とするものではなく、片方の弾性アーム４５と保持部４６だけでも、目的を達成することができる。 The illustrated embodiment above shows a holding means 37 having a pair of elastic arms 45, 45 and a pair of holding portions 46, 46, but the present invention does not necessarily require a pair, and the purpose can be achieved with only one elastic arm 45 and holding portion 46.

１１支柱
１２連結部材
１３フランジ
１４緊結孔
１４ａ接支縁部
１５連結金具
１６楔部材
１６Ａ楔本体部
１６Ｂ枝部
１６Ｃ連結部
１６ｂ枝部の腹部
１７基部
１８上顎部
１９下顎部
１８ａ、１９ａ当接部
１９ｂ下顎部の先端傾斜部
２０受入部
２１上側の挿通孔
２１ａ受縁部
２２下側の挿通孔
２２ａ受縁部
２３楔部
２３ａ腹部
２３ｂ背部
２４頭部
２５脚部
２５ｅ下端部
２６空所部
２７開口部
２７ａ、２７ｂ平坦面
２８上側の案内孔
２９下側の案内孔
３０載置面
３１受止め部
３２抜止め手段
３３ガイド部
３４遊動面
３４ａ上側遊動面
３４ｂ下側遊動面
３５案内リブ
３６ストッパ部
３７保持手段
３８筒体
３９線材折曲体
４０案内通路
４１背面壁
４２固定壁
４２ａ通口
４３正面壁
４４固定部
４５弾性アーム
４５ａ第１アーム
４５ｂ第２アーム
４６保持部
４６ａ突出部
４６ｂ上側傾斜部
４６ｃ下側傾斜部
４７固定手段
４７ａファスナ
４８接支手段
４９係止部 11 Support 12 Connecting member 13 Flange 14 Fastening hole 14a Support edge portion 15 Connecting fitting 16 Wedge member 16A Wedge main body portion 16B Branch portion 16C Connecting portion 16b Branch portion abdomen 17 Base portion 18 Upper jaw portion 19 Lower jaw portion 18a, 19a Abutment portion 19b Lower jaw portion inclined tip portion 20 Receiving portion 21 Upper insertion hole 21a Receiving edge portion 22 Lower insertion hole 22a Receiving edge portion 23 Wedge portion 23a Abdomen 23b Back portion 24 Head portion 25 Leg portion 25e Lower end portion 26 Cavity portion 27 Openings 27a, 27b Flat surface 28 Upper guide hole 29 Lower guide hole 30 Placement surface 31 Receiving portion 32 Anti-pullout means 33 Guide portion 34 Free floating surface 34a Upper free floating surface 34b Lower floating surface 35, guide rib 36, stopper portion 37, holding means 38, cylinder 39, bent wire body 40, guide passage 41, rear wall 42, fixed wall 42a, through hole 43, front wall 44, fixing portion 45, elastic arm 45a, first arm 45b, second arm 46, holding portion 46a, protrusion 46b, upper inclined portion 46c, lower inclined portion 47, fixing means 47a, fastener 48, support means 49, locking portion

Claims

A wedge fastening device for connecting a connecting member to a flange fixed to a support, the device being composed of a connecting fitting (15) fixed to the connecting member and a wedge member (16) ,
The connecting fitting (15) forms a receiving portion (20) between the upper jaw portion (18) and the lower jaw portion (19) into which the flange is inserted,
The wedge member (16) includes a wedge body portion (16A) and a branch portion (16B) which are inserted into the upper and lower jaw portions (18) and (19), respectively, and which are arranged side by side and integrated with each other.
The wedge body portion (16A) is driven into a fastening hole (14) of the flange from a standby position (P1) in which the lower end portion (25e) of the wedge body portion (16A) is positioned at a predetermined height (h) from the upper surface of the lower jaw portion (19) to a fastening position (P2) by moving the wedge body portion (16A) downward.
A stopper portion (36) is provided on a floating surface (34) of the branch portion (16B) of the wedge member (16), and a holding portion (46) is provided on a holding means (37) installed inside the connecting fitting (15),
When the stopper portion is placed on the holding portion, the weight of the wedge member (16) is supported to hold the wedge member at the standby position (P1), and when a downward external force is applied to the wedge member (16) from the stationary state, the stopper portion (36) pushes and displaces the holding portion (46) to pass through, thereby moving the wedge member (16) downward toward the fastening position (P2).
The holding means (37) is composed of a fixed wall (42) facing the floating surface (34) of the branch portion (16B) and a bent wire body (39) made of a spring wire provided along the fixed wall,
The wire bending body (39) is configured such that the tip of an elastic arm (45) that is attached to the outer surface of a fixed wall (42) is bent in a bow shape toward the floating surface (34) to form the retaining portion (46), and the retaining portion (46) is displaced in a direction away from the floating surface (34) through elastic deformation of the elastic arm (45).

The wedge fastening device for scaffolding described in claim 1 is characterized in that a support means (48) is formed on the outer surface of the fixed wall (42) to receive the elastic arm (45) against elastic force, and by receiving the elastic arm (45), the holding part (46) is held in a position where it does not press against the floating surface (34).

The wedge fastening device for scaffolding according to claim 1 or 2, characterized in that the holding means (37) is formed by a peripheral wall including the fixed wall (42) forming a guide passage (40) for guiding the vertical movement of the branch portion (16B) of the wedge member (16).

In the standby position (P1), a lower end (25e) of the wedge body portion (16A) protrudes a distance (t) from a mounting surface (30) formed on the lower surface of the upper jaw portion (18) toward the inside of the receiving portion (20), and a guide portion (33) is formed at the lower end (25e).
When the flange (13) is advanced toward the receiving portion (20) with the wedge member (16) in the standby position (P1), the guide portion (33) abuts against and rides up on the edge of the flange (13), thereby moving the lower end portion (25e) upward toward the retracted position (P0) where the lower end portion (25e) is flush with the placement surface (30), and when the lower end portion (25e) faces the fastening hole (14) of the flange, the wedge member (16) is moved downward toward the standby position (P1) by its own weight, and the lower end portion (25e) is inserted and engaged in the fastening hole (14).
The branch portion (16B) of the wedge member (16) forms a lower floating surface (34b) below the stopper portion (36) with respect to the holding portion (46) of the holding means (37),
A wedge fastening device for scaffolding as described in claim 1, 2 or 3, characterized in that the retaining portion (46) and the lower floating surface (34b) are configured to allow the wedge member (16) to move up and down between the waiting position (P1) and the retracted position (P0) relative to each other.

The wedge fastening device for scaffolding described in claim 4, characterized in that the distance (t) is configured such that t < T with respect to the thickness (T) of the flange.

When the wedge member (16) is in the standby position (P1), the height (h) of the space between the lower end (25e) of the wedge body portion (16A) and the lower jaw portion (19) is configured such that T≦h, where T is the thickness (T) of the flange;
a lower distance (g) and an upper distance (e) constituting a protruding distance (t) of a lower end (25e) protruding downward from the mounting surface (30) are configured so that e<g;
The guide portion (33) is formed in a region of the lower end portion (25e) that is included in the lower distance (g), and the locking portion (49) is formed in a region of the lower end portion (25e) that is included in the upper distance (e);
6. A wedge fastening device for scaffolding as described in claim 4 or 5, characterized in that when the wedge member (16) is in the standby position (P1) and the supporting surface (30) of the upper jaw portion (18) is placed on the flange (13), the locking portion (49) locks into the fastening hole (14) of the flange, thereby preventing lateral movement of the upper jaw portion (18).

A wedge fastening device for scaffolding as described in claim 4, 5 or 6, characterized in that the guide portion (33) is formed by a conical surface that is approximately conical toward the center of the lower end at the lower end (25e) of the wedge body portion (16A).

The wedge fastening device for scaffolding according to claim 4, 5 or 6, characterized in that the guide portion (33) is formed by a spherical surface that is approximately spherical at the lower end portion (25e) of the wedge main body portion (16A).