JP5155758B2 - Formwork structure - Google Patents

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JP5155758B2
JP5155758B2 JP2008184305A JP2008184305A JP5155758B2 JP 5155758 B2 JP5155758 B2 JP 5155758B2 JP 2008184305 A JP2008184305 A JP 2008184305A JP 2008184305 A JP2008184305 A JP 2008184305A JP 5155758 B2 JP5155758 B2 JP 5155758B2
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fixing member
electromagnetic
attaching
detaching
accommodating
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JP2010024637A (en
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良弘 田中
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Taisei Corp
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Description

本発明は、型枠構造に関する。   The present invention relates to a formwork structure.

インサートや吊り治具などの埋め込み部材が埋設されたコンクリート構造物の構築は、埋め込み部材を予め型枠に固定した状態で、コンクリートを打設することにより行う。   Construction of a concrete structure in which an embedded member such as an insert or a hanging jig is embedded is performed by placing concrete in a state where the embedded member is fixed in advance to the formwork.

埋め込み部材を型枠に固定する場合には、図３（ａ）に示すように、型枠１０１に設けられた貫通孔１１１に固定用ボルトＢを挿通し、これを埋め込み部材１０２にねじ込むことにより行うのが一般的である。   When fixing the embedding member to the mold, as shown in FIG. 3A, the fixing bolt B is inserted into the through hole 111 provided in the mold 101 and screwed into the embedding member 102. It is common to do it.

ところが、前記固定方法によると、脱型時に全ての固定用ボルトＢを取り除く必要があるため、埋め込み部材１０２の個数が多い場合には固定用ボルトＢを取り除く作業に多大な時間を要していた。   However, according to the fixing method, it is necessary to remove all the fixing bolts B at the time of demolding. Therefore, when the number of the embedded members 102 is large, it takes a long time to remove the fixing bolts B. .

また、埋め込み部材１０２が、内型枠に固定されている場合や、底型枠に固定されている場合等には、固定用ボルトＢの着脱のための作業空間を型枠１０１の外側に確保することができない場合があった。   Further, when the embedding member 102 is fixed to the inner mold frame or fixed to the bottom mold frame, a working space for attaching / detaching the fixing bolt B is secured outside the mold frame 101. There was a case that could not be done.

そのため、特許文献１には、図３（ｂ）に示すように、ネジ孔２３１の開口端側にカップ状部分２３２が形成されたインサート本体２３０を、カップ状部分２３２の内部に収容される吸着具２０２を介して型枠２０１に固定することにより、コンクリート構造物Ｃに埋設される埋め込み部材２０３の配置を行う方法が開示されている。この吸着具２０２は、螺軸部２２１と磁石２２２とを備えて構成されていて、螺軸部２２１を介してインサート本体２３０に螺着されるとともに、磁石２２２の磁力により型枠２０１に固定される。また、吸着具２０２の基端面には、係止部２２３が突設されており、この係止部２２３を型枠２０１に形成された係合凹部２１１に係合させることで、所定の位置にインサート本体２３０を固定することができる。   Therefore, in Patent Document 1, as shown in FIG. 3 (b), the insert main body 230 in which the cup-shaped portion 232 is formed on the opening end side of the screw hole 231 is adsorbed in the cup-shaped portion 232. A method is disclosed in which the embedded member 203 embedded in the concrete structure C is arranged by being fixed to the formwork 201 via the tool 202. The suction tool 202 includes a screw shaft portion 221 and a magnet 222, and is screwed to the insert main body 230 via the screw shaft portion 221 and is fixed to the mold 201 by the magnetic force of the magnet 222. The Further, a locking portion 223 protrudes from the proximal end surface of the suction tool 202. By engaging the locking portion 223 with an engagement recess 211 formed in the mold 201, a predetermined position is obtained. The insert body 230 can be fixed.

特開平６−１８５１２５号公報JP-A-6-185125

ところが、特許文献１に記載の固定方法は、磁石２２２による磁力が作用した状態で、型枠２０１の脱型作業を行う必要があるため、埋め込み部材２０３の設置数が多い場合には、脱型のための反力が大きくなり、その作業に手間を要していた。   However, the fixing method described in Patent Document 1 requires that the mold 201 be removed while the magnetic force is applied by the magnet 222. Therefore, when the number of the embedded members 203 is large, the removal is performed. The reaction force has increased, and the work has been troublesome.

また、インサート本体２３０に形成されたカップ状部分２３２により、コンクリート構造物Ｃの表面に凹部が形成されるため、モルタル等によりこの凹部を充填する必要があった。
また、水平方向の固定力は磁力に磁石２２２とカップ状部分２３２との摩擦係数を乗じた抵抗力となり、固定力が小さいという問題があった。 Moreover, since the recessed part was formed in the surface of the concrete structure C by the cup-shaped part 232 formed in the insert main body 230, it was necessary to fill this recessed part with mortar etc.
Further, the fixing force in the horizontal direction is a resistance force obtained by multiplying the magnetic force by the friction coefficient between the magnet 222 and the cup-shaped portion 232, and there is a problem that the fixing force is small.

本発明は、前記の問題点を解決することを目的とするものであり、埋め込み部材を精度よく設置するとともに、型枠の脱型作業を容易に行うことを可能とした型枠構造を提案することを課題とする。   The present invention is intended to solve the above-described problems, and proposes a formwork structure that enables the embedding member to be accurately installed and the mold form to be easily removed. This is the issue.

前記課題を解決するために、請求項１に記載の発明は、埋め込み部材に取り付けられる磁性体材料の固定部材と、型枠本体と、を備える型枠構造であって、前記型枠本体には、前記固定部材を収容する収容部が形成されており、前記収容部内には、永久磁石と磁気コイルとを備える電磁着脱部が配設されており、前記固定部材は中心部を貫通するボルト孔と前記埋め込み部材と反対側の端面に形成された係止部とを有し、前記固定部材は前記ボルト孔を貫通するとともに頭部が前記係止部に収容されたボルトを介して前記埋め込み部材に螺着され、前記電磁着脱部への通電が停止されている状態で前記固定部材が前記電磁着脱部に対して固定され、前記電磁着脱部に通電したときに前記固定部材と前記電磁着脱部との固定状態が解除されることを特徴としている。 In order to solve the above-mentioned problem, the invention according to claim 1 is a formwork structure including a fixing member made of a magnetic material attached to an embedding member and a formwork body, and the formwork body includes A housing portion for housing the fixing member is formed, and an electromagnetic attaching / detaching portion including a permanent magnet and a magnetic coil is disposed in the housing portion, and the fixing member has a bolt hole penetrating the center portion. And an engaging part formed on the end surface opposite to the embedding member, and the fixing member passes through the bolt hole and the head is inserted through the bolt accommodated in the engaging part. The fixing member is fixed to the electromagnetic attaching / detaching portion in a state in which energization to the electromagnetic attaching / detaching portion is stopped, and the fixing member and the electromagnetic attaching / detaching portion are energized when the electromagnetic attaching / detaching portion is energized. The fixed state with It is characterized in.

また、請求項２に記載の発明は、埋め込み部材に取り付けられる磁性体材料の固定部材と、型枠本体と、を備える型枠構造であって、前記型枠本体には、前記固定部材を収容する収容部が形成されており、前記収容部内には、電磁石を備える電磁着脱部が配設されており、前記固定部材は中心部を貫通するボルト孔と前記埋め込み部材と反対側の端面に形成された係止部とを有し、前記固定部材は前記ボルト孔を貫通するとともに頭部が前記係止部に収容されたボルトを介して前記埋め込み部材に螺着され、前記電磁着脱部に通電したときに前記固定部材が前記電磁着脱部に対して固定され、前記電磁着脱部の通電を停止したときに前記固定部材と前記電磁着脱部との固定状態が解除されることを特徴としている。
なお、前記電磁着脱部は、前記永久磁石を芯として、その外側に前記磁気コイルを配置してなるものであってもよい。 According to a second aspect of the present invention, there is provided a formwork structure comprising a fixing member made of a magnetic material attached to the embedding member, and a formwork body, and the formwork body contains the fixing member. accommodating portion for which is formed on said housing portion is formed on the end face of the electromagnetic detachable portion is disposed, the fixed member and the embedded member and the bolt holes through the central portion opposite with an electromagnet The fixing member passes through the bolt hole, and the head is screwed to the embedded member via a bolt accommodated in the locking portion, and the electromagnetic attachment / detachment portion is energized. In this case, the fixing member is fixed to the electromagnetic attaching / detaching portion, and when the energization of the electromagnetic attaching / detaching portion is stopped, the fixing state between the fixing member and the electromagnetic attaching / detaching portion is released.
In addition, the said electromagnetic attachment / detachment part may arrange | position the said magnetic coil on the outer side centering on the said permanent magnet.

また、請求項３に記載の発明は、埋め込み部材に取り付けられる磁性体材料の固定部材と、型枠本体と、を備える型枠構造であって、前記型枠本体には、前記固定部材を収容する収容部が形成されており、前記収容部内には永久磁石と磁気コイルとを備える電磁着脱部が配設されており、前記収容部は前記固定部材にがたつきが生じないように前記固定部材を保持することが可能な形状を具備していて、前記電磁着脱部への通電が停止されている状態で前記固定部材が前記電磁着脱部に対して固定され、前記電磁着脱部に通電したときに前記固定部材と前記電磁着脱部との固定状態が解除されることを特徴としている。According to a third aspect of the present invention, there is provided a formwork structure comprising a fixing member made of a magnetic material attached to the embedding member and a formwork body, and the formwork body contains the fixing member. An accommodating part that includes a permanent magnet and a magnetic coil is disposed in the accommodating part, and the accommodating part is fixed so that the fixing member does not rattle. The fixing member is fixed to the electromagnetic attachment / detachment portion and energized to the electromagnetic attachment / detachment portion in a state in which energization to the electromagnetic attachment / detachment portion is stopped. Sometimes, the fixed state between the fixing member and the electromagnetic attaching / detaching portion is released.

また、請求項４に記載の発明は、埋め込み部材に取り付けられる磁性体材料の固定部材と、型枠本体と、を備える型枠構造であって、前記型枠本体には、前記固定部材を収容する収容部が形成されており、前記収容部内には、電磁石を備える電磁着脱部が配設されており、前記収容部は前記固定部材にがたつきが生じないように前記固定部材を保持することが可能な形状を具備していて、前記電磁着脱部に通電したときに前記固定部材が前記電磁着脱部に対して固定され、前記電磁着脱部の通電を停止したときに前記固定部材と前記電磁着脱部との固定状態が解除されることを特徴としている。According to a fourth aspect of the present invention, there is provided a formwork structure comprising a fixing member made of a magnetic material attached to the embedding member, and a formwork body, and the formwork body contains the fixing member. And an electromagnetic attaching / detaching portion including an electromagnet is disposed in the housing portion, and the housing portion holds the fixing member so that the fixing member does not rattle. The fixing member is fixed to the electromagnetic attaching / detaching portion when the electromagnetic attaching / detaching portion is energized, and when the electromagnetic attaching / detaching portion is stopped energizing, the fixing member and the electromagnetic attaching / detaching portion are The fixed state with the electromagnetic attaching / detaching portion is released.
なお、前記電磁着脱部は、前記永久磁石を芯として、その外側に前記磁気コイルを配置してなるものであってもよい。In addition, the said electromagnetic attachment / detachment part may arrange | position the said magnetic coil on the outer side centering on the said permanent magnet.

かかる型枠構造によれば、電磁着脱部の磁力により固定部材を固定しているため、電磁着脱部への通電を操作することで埋め込み部材の着脱を行うことが可能となる。そのため、埋め込み部材の設置数に関わらず、型枠の脱型作業を容易に行うことができる。
また、固定部材は収容部により固定されるため、コンクリートの流入圧が作用してもズレが生じることがなく、埋め込み部材を高精度に配置することが可能となる。 According to such a formwork structure, since the fixing member is fixed by the magnetic force of the electromagnetic attaching / detaching portion, the embedded member can be attached / detached by operating the energization to the electromagnetic attaching / detaching portion. Therefore, the mold can be easily removed regardless of the number of embedded members.
Further , since the fixing member is fixed by the accommodating portion, no displacement occurs even when the inflow pressure of the concrete acts, and the embedded member can be arranged with high accuracy.

さらに、前記固定部材の周面と前記収容部の内壁面との隙間に潤滑材が充填されていれば、固定筒挿入部にコンクリートが流入することが防止される。また、前記固定部材の周面と前記収容部の内壁面に抜き勾配が形成されていれば、脱型作業がより容易になる。   Furthermore, if the lubricant is filled in the gap between the peripheral surface of the fixing member and the inner wall surface of the housing portion, the concrete is prevented from flowing into the fixed cylinder insertion portion. Further, if a draft angle is formed on the peripheral surface of the fixing member and the inner wall surface of the housing portion, the demolding operation becomes easier.

本発明の型枠構造によれば、埋め込み部材を精度よく設置するとともに、その型枠の脱型作業を容易に行うことが可能となる。   According to the formwork structure of the present invention, it is possible to install the embedding member with high accuracy and to easily perform the demolding work of the formwork.

以下、本発明の好適な実施の形態について、図面を参照して詳細に説明する。
本実施形態に係る型枠構造１は、図１に示すように、埋め込み部材Ａが埋設されたコンクリート部材Ｃを製作する際に使用するものである。埋め込み部材Ａの端面は、コンクリート部材Ｃの表面に露出した状態で埋設される。 DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the formwork structure 1 according to the present embodiment is used when a concrete member C in which an embedded member A is embedded is manufactured. The end surface of the embedded member A is embedded in a state exposed on the surface of the concrete member C.

なお、コンクリート部材Ｃの構成は限定されるものではなく、例えば鉄筋コンクリートや無筋コンクリートであってもよい。また、本実施形態では埋め込み部材Ａとして、インサートを採用する場合について説明するが、埋め込み部材Ａの構成も限定されるものではなく、適宜公知の埋め込み部材が適用可能である。また、埋め込み部材Ａの配置も限定されるものではなく、適宜設定することが可能である。   The configuration of the concrete member C is not limited, and may be reinforced concrete or unreinforced concrete, for example. In the present embodiment, the case where an insert is employed as the embedding member A will be described. However, the configuration of the embedding member A is not limited, and a known embedding member can be applied as appropriate. Further, the arrangement of the embedded member A is not limited, and can be set as appropriate.

本実施形態に係る型枠構造１は、型枠本体２と、埋め込み部材Ａに取り付けられる磁性体材料の固定部材３と、を備えている。   The formwork structure 1 according to the present embodiment includes a formwork body 2 and a fixing member 3 made of a magnetic material that is attached to the embedding member A.

型枠本体２は、例えば鋼製部材からなる。型枠本体２には、埋め込み部材Ａが配置される箇所に応じて、固定部材３を収容可能な収容部２１が形成されている。なお、型枠本体２を構成する材料は限定されるものではなく、適宜公知の材料から選定して使用することが可能である。   The mold body 2 is made of, for example, a steel member. The mold body 2 is formed with an accommodating portion 21 that can accommodate the fixing member 3 in accordance with the location where the embedded member A is disposed. In addition, the material which comprises the mold body 2 is not limited, It can select from a well-known material suitably and can be used.

収容部２１は、固定部材３を挿入した状態で固定部材３のがたつきが生じないように保持することが可能な形状を具備している。本実施形態の収容部２１は、固定部材３を収容することが可能となるように形成された円筒状の凹部（空間）であって、内径が固定部材３の外径よりも若干大きく形成されている。
なお、収容部２１の形状は、固定部材３を収容するとともに保持することが可能であれば限定されるものではなく、固定部材３の形状に応じて適宜形成すればよい。 The accommodating portion 21 has a shape that can be held so that rattling of the fixing member 3 does not occur when the fixing member 3 is inserted. The accommodating portion 21 of the present embodiment is a cylindrical recess (space) formed so as to be able to accommodate the fixing member 3 and has an inner diameter slightly larger than the outer diameter of the fixing member 3. ing.
The shape of the accommodating portion 21 is not limited as long as it can accommodate and hold the fixing member 3, and may be appropriately formed according to the shape of the fixing member 3.

収容部２１の底部（図１において下端部）には、電磁石を備える電磁着脱部４が配設されている。   An electromagnetic attaching / detaching portion 4 including an electromagnet is disposed on the bottom portion (lower end portion in FIG. 1) of the accommodating portion 21.

電磁着脱部４は、収容部２１の底部を貫通して配設されたねじＢ２を介して収容部２１内に固定されている。なお、電磁着脱部４の固定方法は限定されるものではなく、例えば、接着するなど、適宜公知の手段により行えばよい。   The electromagnetic attaching / detaching portion 4 is fixed in the housing portion 21 via a screw B2 that is disposed through the bottom portion of the housing portion 21. In addition, the fixing method of the electromagnetic attachment / detachment part 4 is not limited, For example, what is necessary is just to perform suitably by a well-known means, such as adhere | attaching.

本実施形態に係る電磁着脱部４は、永久磁石（図示省略）を芯として、その外側に配置された磁気コイル（図示省略）とを備えて構成されている。
磁気コイルは整流器４１に接続されており、整流器４１から直流電流の通電が可能に構成されている。 The electromagnetic attachment / detachment unit 4 according to the present embodiment includes a permanent magnet (not shown) as a core and a magnetic coil (not shown) arranged on the outside thereof.
The magnetic coil is connected to the rectifier 41, and is configured such that direct current can be passed from the rectifier 41.

電磁着脱部４は、磁気コイルへの電流の通電が停止されている状態（磁気コイルが消磁されている状態）では、永久磁石の磁力により固定部材３を固定し、磁気コイルに電流が通電されている状態（磁気コイルが励磁されている状態）では、磁気コイルの磁力により永久磁石の磁力を打ち消すことで、固定部材３の固定状態を解除する。
なお、電磁着脱部４の構成は前記のものに限定されるものではなく、適宜設定することが可能である。 The electromagnetic attachment / detachment unit 4 fixes the fixing member 3 by the magnetic force of the permanent magnet when the current supply to the magnetic coil is stopped (the magnetic coil is demagnetized), and the current is supplied to the magnetic coil. In the state where the magnetic coil is excited (the state where the magnetic coil is excited), the fixed state of the fixing member 3 is released by canceling out the magnetic force of the permanent magnet by the magnetic force of the magnetic coil.
In addition, the structure of the electromagnetic attachment / detachment part 4 is not limited to the said thing, It is possible to set suitably.

固定部材３は、埋め込み部材ＡにボルトＢ１を介して固定される部材であって、円柱状に形成された磁性体材料により構成されている。なお、固定部材３を構成する磁性体材料とは、それ自身は磁石ではないが、磁力に引きつけられる材料であって、例えば鉄や鋼等をいう。   The fixing member 3 is a member that is fixed to the embedded member A via a bolt B1 and is made of a magnetic material formed in a columnar shape. The magnetic material constituting the fixing member 3 is not a magnet itself, but is a material that is attracted by a magnetic force, such as iron or steel.

固定部材３には、その中心部を貫通するボルト孔３１が形成されている。また、固定部材３の埋め込み部材Ａと反対側の端面のボルト孔３１に対応する箇所には、ボルトＢ１の頭部を係止するための係止部３２が形成されている。係止部３２は、固定部材３の端面に形成された凹部である。   The fixing member 3 is formed with a bolt hole 31 penetrating the center portion thereof. In addition, a locking portion 32 for locking the head of the bolt B1 is formed at a position corresponding to the bolt hole 31 on the end surface of the fixing member 3 on the side opposite to the embedding member A. The locking portion 32 is a recess formed on the end surface of the fixing member 3.

固定部材３は、ボルト孔３１を挿通し、頭部が係止部３２に係止されたボルトＢ１を介して、埋め込み部材Ａに螺着される。このとき、ボルトＢ１の頭部は、係止部３２に収容されている。なお、係止部３２の形状等は限定されるものではない。   The fixing member 3 is screwed to the embedded member A via a bolt B1 that is inserted through the bolt hole 31 and whose head is locked to the locking portion 32. At this time, the head of the bolt B <b> 1 is accommodated in the locking portion 32. In addition, the shape of the latching | locking part 32 etc. are not limited.

固定部材３は、収容部２１に収容された状態で、電磁着脱部４の磁力により収容部２１内に固定される。
固定部材３の周面と収容部２１の内壁面との隙間には、グリースや粘性の高い油等からなる潤滑材５が充填されている。 The fixing member 3 is fixed in the accommodating portion 21 by the magnetic force of the electromagnetic attaching / detaching portion 4 while being accommodated in the accommodating portion 21.
A gap between the peripheral surface of the fixing member 3 and the inner wall surface of the accommodating portion 21 is filled with a lubricant 5 made of grease, highly viscous oil, or the like.

次に、本実施形態に係る型枠構造１による埋め込み部材Ａが配設されたコンクリート部材の製作方法について説明する。   Next, the manufacturing method of the concrete member by which the embedding member A by the formwork structure 1 which concerns on this embodiment is arrange | positioned is demonstrated.

まず、図２に示すように、固定部材３のボルト孔３１を貫通したボルトＢ１を、埋め込み部材Ａのボルト孔Ａ１にねじ込むことで、固定部材３と埋め込み部材Ａとの固定を行う。   First, as shown in FIG. 2, the fixing member 3 and the embedded member A are fixed by screwing the bolt B <b> 1 penetrating the bolt hole 31 of the fixing member 3 into the bolt hole A <b> 1 of the embedded member A.

次に、固定部材３の周面に潤滑材５を塗布して、型枠本体２の収容部２１に挿入する。これにより、固定部材３（埋め込み部材Ａ）は、永久磁石の磁力により、電磁着脱部４に引き付けられ、収容部２１に固定される。   Next, the lubricant 5 is applied to the peripheral surface of the fixing member 3 and inserted into the housing portion 21 of the mold body 2. As a result, the fixing member 3 (embedding member A) is attracted to the electromagnetic attaching / detaching portion 4 and fixed to the accommodating portion 21 by the magnetic force of the permanent magnet.

固定部材３は、収容部２１に入り込んでいるので、埋め込み部材Ａの軸心と直交する方向（図１における左右方向や紙面垂直方向）に永久磁石の磁力以上の力が作用した場合であってもずれることはない。また、固定部材３の収容部２からの抜け出しは、永久磁石の磁力により阻止されている。   Since the fixing member 3 has entered the housing portion 21, it is a case where a force greater than the magnetic force of the permanent magnet is applied in a direction perpendicular to the axis of the embedded member A (the left-right direction in FIG. 1 or the direction perpendicular to the paper surface). It will not slip. Further, the fixing member 3 is prevented from coming out of the housing portion 2 by the magnetic force of the permanent magnet.

なお、埋め込み部材Ａの向きを微調整する場合は、整流器４１により通電した状態で行う。微調整が終了したら、整流器４１からの通電を停止し、固定部材３を再度固定する。   In addition, when finely adjusting the direction of the embedded member A, the rectifier 41 is energized. When the fine adjustment is completed, the energization from the rectifier 41 is stopped and the fixing member 3 is fixed again.

次に、埋め込み部材Ａ（固定部材３）が配設された型枠本体２を、所定の位置に配置し、コンクリートを打設する。   Next, the mold body 2 on which the embedded member A (fixing member 3) is disposed is placed at a predetermined position, and concrete is placed.

コンクリートを養生し、コンクリートに脱型が可能な強度が発現したら、整流器４１から直流電流を通電することで、永久磁石の磁力を打ち消して、固定部材３の固定状態を解除し、脱型を行う。   When the concrete is cured and has a strength capable of demolding, the direct current is applied from the rectifier 41 to cancel the magnetic force of the permanent magnet, release the fixed state of the fixing member 3, and perform demolding. .

型枠本体２を取り外した後、固定部材３を埋め込み部材Ａから取り外すことにより、コンクリート部材Ｃが完成する。なお、固定部材３は、再利用することが可能である。   After removing the mold body 2, the fixing member 3 is removed from the embedding member A, whereby the concrete member C is completed. Note that the fixing member 3 can be reused.

以上、本実施形態の型枠構造１によれば、埋め込み部材Ａを効率的に着脱することができるため、型枠の設置、脱型の作業を容易に行うことが可能となる。また、型枠構造１によれば、固定部材３を収容部２１および電磁着脱部４により型枠本体２に強固に固定することで、埋め込み部材Ａを精度よく配設することが可能となる。故に、埋め込み部材Ａが配設されたコンクリート部材Ｃの製作を高品質かつ容易に行うことを可能としている。また、施工性に優れているため、施工時間を短縮することが可能となり、製作コストの低減化が可能となる。   As described above, according to the mold structure 1 of the present embodiment, since the embedding member A can be efficiently attached and detached, it is possible to easily perform installation and demolding work of the mold. Further, according to the mold structure 1, the embedding member A can be arranged with high accuracy by firmly fixing the fixing member 3 to the mold body 2 with the accommodating portion 21 and the electromagnetic attaching / detaching portion 4. Therefore, it is possible to manufacture the concrete member C provided with the embedded member A with high quality and easily. Moreover, since it is excellent in workability, it becomes possible to shorten construction time and to reduce manufacturing cost.

また、固定部材３の固定の解除を、整流器４１を操作することにより簡易に行うことができるため、従来の固定ボルトを利用した固定方法のように、固定ボルトの取り外し忘れる等の人為的なミスによる事故のリスクを最小限に抑えることが可能となる。   Further, since the fixing member 3 can be easily released by operating the rectifier 41, a human error such as forgetting to remove the fixing bolt as in the conventional fixing method using the fixing bolt. It is possible to minimize the risk of accidents.

また、埋め込み部材Ａが、内型枠に固定されている場合や、底型枠に固定されている場合であっても、整流器４１を操作するのみで脱型することが可能である。そのため、ボルトの着脱のための作業空間を確保するための構造材等を省略することが可能となり、型枠費用の低減が可能となる。   Further, even when the embedded member A is fixed to the inner formwork or to the bottom formwork, it is possible to remove the mold only by operating the rectifier 41. Therefore, it is possible to omit a structural material or the like for securing a work space for attaching and detaching bolts, and it is possible to reduce the mold cost.

また、固定部材３と収容部２１との隙間に潤滑材５が充填されているため、この隙間にコンクリートが入り込むことが防止されるとともに、脱型時に収容部２１から固定部材３を抜き出しやすくなる。   In addition, since the lubricant 5 is filled in the gap between the fixing member 3 and the accommodating portion 21, it is possible to prevent the concrete from entering the gap and to easily extract the fixing member 3 from the accommodating portion 21 during demolding. .

また、電磁着脱部４への通電を、脱型時のみに行えばよいため、使用電気量を削減することが可能となり、経済性に優れている。また、コンクリートの養生時は通電しないため、コンクリート養生時に電磁着脱部４が熱を持つことがない。   Moreover, since it is sufficient to energize the electromagnetic attaching / detaching portion 4 only at the time of demolding, it is possible to reduce the amount of electricity used, which is excellent in economic efficiency. Moreover, since it does not energize at the time of concrete curing, the electromagnetic attachment / detachment part 4 does not have heat at the time of concrete curing.

以上、本発明について、好適な実施形態について説明した。しかし、本発明は、前述の各実施形態に限られず、前記の各構成要素については、本発明の趣旨を逸脱しない範囲で、適宜設計変更が可能であることは言うまでもない。   The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and it goes without saying that the above-described constituent elements can be appropriately changed in design without departing from the spirit of the present invention.

例えば、前記実施形態では、電磁着脱部４として、永久ボルトと電磁コイルとを備えたものを採用したが、電磁着脱部４は、電磁コイル（電磁石）のみからなるものであってもよい。この場合、電磁着脱部４に整流器４１から通電することにより、固定部材３が固定され、電磁着脱部４への通電を停止したときに固定部材３の固定状態が解除される。また、電流を変化させることで、固定部材３の固定状態に強弱を付けて、固定部材３の着脱や微調整を行ってもよい。   For example, in the above embodiment, the electromagnetic attachment / detachment unit 4 is provided with a permanent bolt and an electromagnetic coil, but the electromagnetic attachment / detachment unit 4 may be composed of only an electromagnetic coil (electromagnet). In this case, the fixing member 3 is fixed by energizing the electromagnetic attaching / detaching portion 4 from the rectifier 41, and the fixing state of the fixing member 3 is released when the energization to the electromagnetic attaching / detaching portion 4 is stopped. Further, the fixing member 3 may be attached / detached or finely adjusted by changing the current to increase or decrease the fixing state of the fixing member 3.

また、前記実施形態では、固定部材３として、円柱状の部材を採用するものとしたが、固定部材３と収容部２１は、埋め込み部材Ａ側から離れるに従って、直径が小さくなる円錐台状形状の抜き勾配を有する部材であってもよい。このようにすると、脱型時に固定部材３が収容部２１から抜けやすくなる。
また、固定部材３の断面形状は円形に限定されるものではなく、矩形状やその他の多角形状であってもよい。 Moreover, in the said embodiment, although the cylindrical member shall be employ | adopted as the fixing member 3, the fixing member 3 and the accommodating part 21 are frustoconical shapes where a diameter becomes small as it leaves | separates from the embedding member A side. It may be a member having a draft angle. If it does in this way, it will become easy to remove the fixing member 3 from the accommodating part 21 at the time of mold removal.
Further, the cross-sectional shape of the fixing member 3 is not limited to a circular shape, and may be a rectangular shape or other polygonal shapes.

また、前記実施形態では、固定部材３と電磁着脱部４とが当接した状態で、固定部材３を固定する場合について説明したが、電磁着脱部４の磁力により固定部材３がひきつけられていれば、固定部材３と電磁着脱部４との間に隙間が形成されていたり、他の部材が介在していてもよい。   In the above embodiment, the case where the fixing member 3 is fixed while the fixing member 3 and the electromagnetic attaching / detaching portion 4 are in contact with each other has been described. However, the fixing member 3 is attracted by the magnetic force of the electromagnetic attaching / detaching portion 4. For example, a gap may be formed between the fixing member 3 and the electromagnetic attaching / detaching portion 4, or another member may be interposed.

本発明の好適な実施形態に係る型枠構造を示す断面図である。It is sectional drawing which shows the formwork structure which concerns on suitable embodiment of this invention. 図１に示す型枠構造の脱型状況を示す断面図である。It is sectional drawing which shows the demolding condition of the formwork structure shown in FIG. （ａ）および（ｂ）は従来の型枠構造を示す断面図である。(A) And (b) is sectional drawing which shows the conventional formwork structure.

符号の説明Explanation of symbols

１ 型枠構造
２ 型枠本体
３ 固定部材
４ 電磁着脱部
５ 潤滑材
Ａ 埋め込み部材
Ｃ コンクリート部材
DESCRIPTION OF SYMBOLS 1 Formwork structure 2 Formwork body 3 Fixing member 4 Electromagnetic attachment / detachment part 5 Lubricant A Embedding member C Concrete member

Claims (5)

埋め込み部材に取り付けられる磁性体材料の固定部材と、型枠本体と、を備える型枠構造であって、
前記型枠本体には、前記固定部材を収容する収容部が形成されており、
前記収容部内には、永久磁石と磁気コイルとを備える電磁着脱部が配設されており、
前記固定部材は、中心部を貫通するボルト孔と、前記埋め込み部材と反対側の端面に形成された係止部と、を有し、
前記固定部材は、前記ボルト孔を貫通するとともに頭部が前記係止部に収容されたボルトを介して前記埋め込み部材に螺着され、
前記電磁着脱部への通電が停止されている状態で前記固定部材が前記電磁着脱部に対して固定され、前記電磁着脱部に通電したときに前記固定部材と前記電磁着脱部との固定状態が解除されることを特徴とする、型枠構造。 A formwork structure comprising a fixing member made of a magnetic material attached to an embedding member, and a formwork body,
The mold body is formed with an accommodating portion for accommodating the fixing member,
An electromagnetic attaching / detaching portion including a permanent magnet and a magnetic coil is disposed in the housing portion,
The fixing member has a bolt hole penetrating the center portion, and a locking portion formed on an end surface opposite to the embedded member,
The fixing member passes through the bolt hole and a head is screwed to the embedded member via a bolt accommodated in the locking portion,
The fixing member is fixed to the electromagnetic attaching / detaching portion in a state where energization to the electromagnetic attaching / detaching portion is stopped, and the fixing member and the electromagnetic attaching / detaching portion are in a fixed state when the electromagnetic attaching / detaching portion is energized. Formwork structure, characterized by being released. 埋め込み部材に取り付けられる磁性体材料の固定部材と、型枠本体と、を備える型枠構造であって、
前記型枠本体には、前記固定部材を収容する収容部が形成されており、
前記収容部内には、電磁石を備える電磁着脱部が配設されており、
前記固定部材は、中心部を貫通するボルト孔と、前記埋め込み部材と反対側の端面に形成された係止部と、を有し、
前記固定部材は、前記ボルト孔を貫通するとともに頭部が前記係止部に収容されたボルトを介して前記埋め込み部材に螺着され、
前記電磁着脱部に通電したときに前記固定部材が前記電磁着脱部に対して固定され、前記電磁着脱部の通電を停止したときに前記固定部材と前記電磁着脱部との固定状態が解除されることを特徴とする、型枠構造。 A formwork structure comprising a fixing member made of a magnetic material attached to an embedding member, and a formwork body,
The mold body is formed with an accommodating portion for accommodating the fixing member,
An electromagnetic attaching / detaching portion including an electromagnet is disposed in the housing portion,
The fixing member has a bolt hole penetrating the center portion, and a locking portion formed on an end surface opposite to the embedded member,
The fixing member passes through the bolt hole and a head is screwed to the embedded member via a bolt accommodated in the locking portion,
When the electromagnetic attachment / detachment portion is energized, the fixing member is fixed to the electromagnetic attachment / detachment portion, and when the electromagnetic attachment / detachment portion is de-energized, the fixed state between the fixing member and the electromagnetic attachment / detachment portion is released. Formwork structure characterized by that. 埋め込み部材に取り付けられる磁性体材料の固定部材と、型枠本体と、を備える型枠構造であって、
前記型枠本体には、前記固定部材を収容する収容部が形成されており、
前記収容部内には、永久磁石と磁気コイルとを備える電磁着脱部が配設されており、
前記収容部は、前記固定部材にがたつきが生じないように前記固定部材を保持することが可能な形状を具備していて、
前記電磁着脱部への通電が停止されている状態で前記固定部材が前記電磁着脱部に対して固定され、前記電磁着脱部に通電したときに前記固定部材と前記電磁着脱部との固定状態が解除されることを特徴とする、型枠構造。 A formwork structure comprising a fixing member made of a magnetic material attached to an embedding member, and a formwork body,
The mold body is formed with an accommodating portion for accommodating the fixing member,
An electromagnetic attaching / detaching portion including a permanent magnet and a magnetic coil is disposed in the housing portion,
The accommodating portion has a shape capable of holding the fixing member so that rattling does not occur in the fixing member,
The fixing member is fixed to the electromagnetic attaching / detaching portion in a state where energization to the electromagnetic attaching / detaching portion is stopped, and the fixing member and the electromagnetic attaching / detaching portion are in a fixed state when the electromagnetic attaching / detaching portion is energized. Formwork structure, characterized by being released. 埋め込み部材に取り付けられる磁性体材料の固定部材と、型枠本体と、を備える型枠構造であって、
前記型枠本体には、前記固定部材を収容する収容部が形成されており、
前記収容部内には、電磁石を備える電磁着脱部が配設されており、
前記収容部は、前記固定部材にがたつきが生じないように前記固定部材を保持することが可能な形状を具備していて、
前記電磁着脱部に通電したときに前記固定部材が前記電磁着脱部に対して固定され、前記電磁着脱部の通電を停止したときに前記固定部材と前記電磁着脱部との固定状態が解除されることを特徴とする、型枠構造。 A formwork structure comprising a fixing member made of a magnetic material attached to an embedding member, and a formwork body,
The mold body is formed with an accommodating portion for accommodating the fixing member,
An electromagnetic attaching / detaching portion including an electromagnet is disposed in the housing portion,
The accommodating portion has a shape capable of holding the fixing member so that rattling does not occur in the fixing member,
When the electromagnetic attachment / detachment portion is energized, the fixing member is fixed to the electromagnetic attachment / detachment portion, and when the electromagnetic attachment / detachment portion is de-energized, the fixed state between the fixing member and the electromagnetic attachment / detachment portion is released. Formwork structure characterized by that. 前記固定部材の周面と前記収容部の内壁面との隙間に潤滑材が充填されていることを特徴とする、請求項１乃至請求項４のいずれか１項に記載の型枠構造。 The mold structure according to any one of claims 1 to 4, wherein a lubricant is filled in a gap between a peripheral surface of the fixing member and an inner wall surface of the housing portion.
JP2008184305A 2008-07-15 2008-07-15 Formwork structure Expired - Fee Related JP5155758B2 (en)

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