JPH03326Y2 - - Google Patents

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Publication number
JPH03326Y2
JPH03326Y2 JP3011586U JP3011586U JPH03326Y2 JP H03326 Y2 JPH03326 Y2 JP H03326Y2 JP 3011586 U JP3011586 U JP 3011586U JP 3011586 U JP3011586 U JP 3011586U JP H03326 Y2 JPH03326 Y2 JP H03326Y2
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JP
Japan
Prior art keywords
formwork
gap
concrete
fitting
inner formwork
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP3011586U
Other languages
Japanese (ja)
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JPS62142502U (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP3011586U priority Critical patent/JPH03326Y2/ja
Publication of JPS62142502U publication Critical patent/JPS62142502U/ja
Application granted granted Critical
Publication of JPH03326Y2 publication Critical patent/JPH03326Y2/ja
Expired legal-status Critical Current

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Description

【考案の詳細な説明】 (産業上の利用分野) 本考案は鋼製コンクリート型枠に係り、特にコ
ンクリート製品が撤去容易な内側型枠に関するも
のである。
[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to steel concrete formwork, and particularly to inner formwork from which concrete products can be easily removed.

(従来技術) 打設コンクリートの内壁を構成する内側型枠
は、従来、木製パネル、鋼製パネル等が一般に使
用され、この固定方法は、型枠パネルが方形の場
合には相対向する型枠面の突張りとなる外方向拡
張マンドレルによつて両面を固定し、あるいは両
ねじスクリユーを有するパイプをラチエツト締付
けする等の手段によつて実施していた。しかしな
がら、右方法では、打設コンクリートの固結後、
製品の撤去に際し、内側型枠とコンクリート製品
との密接な接触のため撤去作業の円滑性を欠き、
無理に内側型枠を取り外すときは、打設コンクリ
ート製品に衝撃を与える不都合があつた。右の点
を改善したのが実願昭59−049079号である。右考
案は、内側型枠の一部を構成する蝶番を、型枠中
心に設けた垂直軸とジヨイントで連結し、該垂直
軸に沿つて垂直シヤフトを引き上げ、このジヨイ
ントに連結する上記蝶番を型枠の内方に向けて曲
折して引き寄せることにより蝶番と打設コンクリ
ートとの間に断面三角形の空隙を生じさせ、かく
て内側型枠と打設コンクリートとを容易に分離で
きるようにしたものである。
(Prior art) In the past, wooden panels, steel panels, etc., were generally used for the inner formwork that constitutes the inner wall of poured concrete, and when the formwork panels were square, this fixing method was This was accomplished by fixing both surfaces with an outwardly expanding mandrel that serves as a bulge for the surfaces, or by ratcheting a pipe with double-threaded screws. However, in the method on the right, after the concrete is solidified,
When removing the product, the removal work was not smooth due to close contact between the inner formwork and the concrete product.
When removing the inner formwork forcibly, there was an inconvenience in that it gave a shock to the poured concrete product. Utility patent application No. 59-049079 improves the point on the right. The right design connects a hinge that forms part of the inner formwork with a vertical shaft provided at the center of the formwork through a joint, pulls up the vertical shaft along the vertical axis, and connects the hinge connected to this joint with the mold. By bending and pulling inward of the frame, a gap with a triangular cross section is created between the hinge and the poured concrete, thus making it possible to easily separate the inner formwork and the poured concrete. be.

(考案が解決しようとする問題点) 上記実願昭59−049079では、内側型枠の辺央部
に内方に曲折する蝶番を設けていたため、蝶番に
より連接された、鋼板のすき間から、しばしばト
ロもれが生じるという欠点があつた。又、右考案
は、蝶番を使用しているため、強度という点で必
ずしも十分ではなく、多数回の使用により、蝶番
がこわれることも、しばしばあつた。「本考案は、
鋼板間のトロもれ防止及び、内側型枠の耐久性の
強化を目的として、考案されたものである。」 (構成) 本考案は打設コンクリートの内壁を構成する内
側型枠に関するものであり右内側型枠は、閉鎖多
辺形のものでも又円形のものでもよく、その一個
所又は複数個所に、立方向に間隙部12を設け、
該間隙の両側の型枠材の所定長を内側に曲折せし
め、該間隙の両側端に受木3を設け、一方該内側
型枠1の中心軸に、立型シヤフト4を設け、伸縮
金具5を介して、面木11を連設し、右面木11
を両受木3,3の間に挿入して、該間隙の両側の
型枠材2及び2′を外方向に押し出すことにより、
所定の例えば閉鎖多辺形や円形の型に成形が可能
であるようにしたことを特徴とする伸縮式コンク
リート内側型枠を提供するものである。
(Problem to be solved by the invention) In the above-mentioned Utility Application No. 59-049079, a hinge that bends inward was provided at the center of the inner formwork, so it was often difficult to see through the gap between the steel plates connected by the hinge. There was a drawback that leakage occurred. Furthermore, since the device on the right uses hinges, it is not necessarily strong enough, and the hinges often break after repeated use. ``This idea is
It was devised for the purpose of preventing leakage between steel plates and strengthening the durability of the inner formwork. (Structure) The present invention relates to the inner formwork that constitutes the inner wall of poured concrete.The right inner formwork may be a closed polygon or a circular form, and the right inner formwork may have a shape in one or more places. A gap 12 is provided in the vertical direction,
A predetermined length of the formwork material on both sides of the gap is bent inward, and brackets 3 are provided at both ends of the gap, while a vertical shaft 4 is provided at the center axis of the inner formwork 1, and an extendable metal fitting 5 is provided. The right side tree 11 is connected to the right side tree 11 through the
is inserted between both supports 3 and 3, and by pushing out the formwork materials 2 and 2' on both sides of the gap,
The purpose of the present invention is to provide a retractable inner concrete formwork, which is characterized in that it can be formed into a predetermined shape, such as a closed polygon or a circle.

(作用) 本考案は、コンクリートを打設しうとするとき
は、立型シヤフト4に設けられた伸縮金具5の働
きにより面木11を外方向に移動され、受木3,
3の間に挿入しながら右受木3,3及び型枠材
2,2′を外方向に押し出し、所定の型、たとえ
ば、閉鎖多辺形とか円形に内側型枠1を成形でき
る。そして、右内側型枠1の外側に、外側型枠を
設けて、右両者間にコンクリートを打設し、固結
させた後、今度は伸縮金具5を介して、面木11
を内方向に動かし、面木11と受木3の圧着状態
を解放させてやると、右状態では間隙部の両側の
型枠材2,2′は、内方向に曲折するように弾性
をもつて成形されているので、右曲折により、コ
ンクリートの内壁面と内側型枠1の型枠材2,
2′とが剥離し、コンクリート材が容易に撤去が
可能となるように構成されているのである。
(Function) In the present invention, when concrete is to be poured, the face timbers 11 are moved outward by the action of the telescopic fittings 5 provided on the vertical shaft 4, and the receiving timbers 3,
The inner form 1 can be formed into a predetermined shape, for example, a closed polygon or a circle, by pushing out the right braces 3, 3 and the formwork materials 2, 2' outward while inserting the inner formwork 1 into a closed polygon or a circle. Then, an outer formwork is provided on the outside of the right inner formwork 1, concrete is poured between the right sides, and after hardening, the face wood 11 is
When moved inward to release the crimped state between the face wood 11 and the support wood 3, in the right state the formwork materials 2 and 2' on both sides of the gap have elasticity so as to bend inward. Since it is formed by turning to the right, the inner wall surface of the concrete and the formwork material 2 of the inner formwork 1,
2' is peeled off and the concrete material can be easily removed.

(実施例) 本考案の実施例の一つを説明すると、第1図
は、右実施例が断面正方形である場合の平面図で
あり、第2図は、第1図の正面断面図であり、第
3図は、第1図のうち、連結金具8、面木11,
11,11、受木3,3付近の詳細図である。
(Example) To explain one of the embodiments of the present invention, Fig. 1 is a plan view of the right embodiment having a square cross section, and Fig. 2 is a front sectional view of Fig. 1. , FIG. 3 shows the connection fittings 8, face wood 11,
11, 11, and a detailed view of the vicinity of the receiving tree 3, 3.

それぞれ左右対称な形をしている、コの字型の
型枠材2及び2′により、断面正方形の内側型枠
1を形成しており、右型枠材2及び2′の左右の
辺の外端には、台形状の受木3が、それぞれ内側
に、突設されている。内側型枠1の中心軸には、
立型シヤフト4があり、該シヤフト4は、ナツト
18,18により、底板19に固定されている。
立型シヤフト4は、それぞれ上部ストツパー1
5、中央部ストツー16、下部ストツパー17、
及び連結金具6が、環設されている。伸縮金具5
のうち連結金具6は、立型シヤフトを回転させる
ことにより、上部連結金具6が、中央部ストツパ
ー方向に移動するときは、下部連結金具6も中央
ストツパー方向に移動し、上部連結金具6が、上
部ストツパー方向に移動するときは、下部連結金
具6は下部ストツパー方向に移動するように右両
連結金具はネジ山が逆にきつてある。伸縮金具5
は、連結金具6、ジヨイント7、連結金具8によ
りなりたつており連結金具6とジヨイント7、ジ
ヨイント7と連結金具8との間は、ピン9,9に
より連結されている。
The U-shaped formwork members 2 and 2', each having a left-right symmetrical shape, form an inner formwork 1 with a square cross section. At the outer ends, trapezoidal receivers 3 are provided to protrude inwardly. On the central axis of the inner formwork 1,
There is a vertical shaft 4, which is fixed to the bottom plate 19 by nuts 18,18.
The vertical shaft 4 has an upper stopper 1, respectively.
5, center stopper 16, lower stopper 17,
and a connecting fitting 6 are provided in a ring. Telescopic fitting 5
When the upper connecting fitting 6 moves toward the center stopper by rotating the vertical shaft, the lower connecting fitting 6 also moves toward the center stopper, and the upper connecting fitting 6 moves toward the center stopper. The screw threads of both right connecting fittings are reversely tightened so that when moving toward the upper stopper, the lower connecting fitting 6 moves toward the lower stopper. Telescopic fitting 5
It consists of a connecting metal fitting 6, a joint 7, and a connecting metal fitting 8, and the connecting metal fitting 6 and the joint 7, and the joint 7 and the connecting metal fitting 8 are connected by pins 9, 9.

連結金具8,8の外側には、中央面木11が立
方向に連設されている。中央面木11の左右に
は、それぞれ面木11,11が平行に間隔をおい
て設けられており、右三本の面木は横板10及び
横板13により連結されている。右面木11,1
1,11は、型枠材2及び2′の受木3,3とか
みあう位置に設けられている。上部連結金具6及
び下部連結金具6からジヨイント7を伝わつて面
木11,11,11に達している外力と、型枠材
2及び2′がやや内側にとじた状態に形成されて
いるので、右2及び2′の頂角部が直角になつた
場合に、右2及び2′に生じる内力とは、互いに、
拮抗しており、これにより中央部の面木11と、
型枠材2及び2′の受木3,3との間は、完全に
密着しており、コンクリート材が内側型枠内に侵
入することを防止している。
On the outside of the connecting fittings 8, 8, a central face tree 11 is arranged in a row in the vertical direction. On the left and right sides of the center panel 11, panel panels 11, 11 are provided in parallel and spaced apart from each other, and the three right panel panels are connected by a horizontal board 10 and a horizontal board 13. Right side tree 11,1
1 and 11 are provided at positions that engage with the supports 3 and 3 of the formwork members 2 and 2'. Since the external force is transmitted from the upper connecting fitting 6 and the lower connecting fitting 6 to the joint 7 and reaches the face timbers 11, 11, 11, and the formwork members 2 and 2' are formed in a slightly closed state, When the apex angles of right sides 2 and 2' are at right angles, the internal forces generated on right sides 2 and 2' are:
They are antagonistic, and as a result, the central part of the mengi 11 and
The formwork members 2 and 2' are in complete contact with the supports 3, 3 to prevent concrete from entering the inner formwork.

なお横板1の左右には、突条13′,13′が突
設されており該突条13′は、内開きのくさび型
に成形されている。又、右突条13′に対向する
ようにして、型枠材2及び2′の受木3には、内
方向に向かつてL字型の突条14が突設されてお
り、右突条14の立方向の辺は、外開きのくさび
型で成形されている。
Note that protrusions 13', 13' are provided on the left and right sides of the horizontal plate 1, and the protrusions 13' are formed into a wedge shape that opens inward. Further, an L-shaped protrusion 14 is provided inwardly protruding from the support 3 of the formwork members 2 and 2' so as to face the right protrusion 13'. The vertical sides of 14 are formed into a wedge shape that opens outward.

以上の第1図乃至第3図のような状態で、コン
クリートが打設される。打設コンクリートが固結
後、コンクリート製品を撤去する際には立型シヤ
フト4を回転させることにより上部連結金具6及
び下部連結金具6は、それぞれのネジ方向が逆に
きられているため、上部連結金具6は下方向に移
動し、下部連結金具6は、上方向に移動する。こ
れにより、面木11,11,11は平行に内方向
に移動する。第4図は、そのような状態をあらわ
した平面図であり、第5図は、面木11,11,
11と、型枠材2及び2′の受木3の付近の詳細
な平面図である。このような状態では、横板13
に突設された突条13′と、型枠材2及び2′の受
木3に突設されたL型突条14のそれぞれのくさ
び部分が密着した状態となつている。そして第3
図でわかるように、突条13′の斜面のシヤフト
4よりのタテの辺は、突条14′の斜面のシヤフ
ト4よりのタテの辺より、中央面木11側にあ
り、しかも突条13′は、横板13、中央面木1
1、ジヨイント7、連結金具6、シヤフト4、ナ
ツト18,18を介して底板19に固定されてい
る。
Concrete is poured in the state shown in FIGS. 1 to 3 above. After the poured concrete has solidified, when removing the concrete product, by rotating the vertical shaft 4, the upper connecting fitting 6 and the lower connecting fitting 6 are cut in the opposite direction, so that the upper The connecting fitting 6 moves downward, and the lower connecting fitting 6 moves upward. As a result, the face pieces 11, 11, 11 move inward in parallel. FIG. 4 is a plan view showing such a state, and FIG. 5 is a plan view showing such a state.
11 and a detailed plan view of the vicinity of the support 3 of the formwork members 2 and 2'. In such a state, the horizontal plate 13
The wedge portions of the L-shaped protrusions 14 protruding from the support 3 of the formwork members 2 and 2' are in close contact with each other. and the third
As can be seen in the figure, the vertical side of the slope of the protrusion 13' that is closer to the shaft 4 is closer to the central face tree 11 than the vertical side of the slope of the protrusion 14' that is closer to the shaft 4, and ' is horizontal plate 13, center plate 1
1. It is fixed to a bottom plate 19 via a joint 7, a connecting fitting 6, a shaft 4, and nuts 18, 18.

一方型枠材2及び2′の受木3に突設された突
条14は、右型枠材2及び2′が固定されていな
いので、面木11,11,11が内側に平行移動
するにつれ、突条14が突条13′の内力により
除々に、スライドするように、第5図の矢印の方
向に移動する。そして、突条14と13′の接触
状態が開放された状態が第6図及び第7図であ
り、このような状態では上部連結金具6及び下部
連結金具6が中央部ストツパー16に密着した状
態となつており、これにより型枠材2及び2′は
内とじの状態となり、間隙部12を生じ、コンク
リート製品が右型枠材2及び2′から、剥離する
から、容易に撤去が可能となる。
On the other hand, since the right formwork members 2 and 2' are not fixed, the protrusions 14 protruding from the support members 3 of the formwork members 2 and 2' cause the face members 11, 11, 11 to move in parallel inward. As the process progresses, the protrusion 14 gradually slides in the direction of the arrow in FIG. 5 due to the internal force of the protrusion 13'. FIGS. 6 and 7 show a state in which the contact state between the protrusions 14 and 13' is released, and in such a state, the upper connecting fitting 6 and the lower connecting fitting 6 are in close contact with the center stopper 16. As a result, the formwork materials 2 and 2' are in a state of internal binding, creating a gap 12, and the concrete product is separated from the right formwork materials 2 and 2', making it possible to easily remove it. Become.

次に、立型シヤフト4を前記場合とは逆回転さ
せることにより、上部連結金具6と下部連結金具
6とは、それぞれ上部ストツパー15及び下部ス
トツパー17の方向に移動し、ジヨイント7、連
結金具8を介して、面木11,11,11が外方
向に平行に移動し中央部面木11が型枠材2及び
2′の受木3,3を外に押すような型になり、中
央部面木11が受木3,3の間隙12の間に挿入
され、第1図のような状態に復帰し、図示されて
いない開閉式の外側型枠を閉じることにより、外
側型枠と内側型枠1との間にコンクリートを打設
すると、続いてコンクリート製品を得ることが出
来る。
Next, by rotating the vertical shaft 4 in the opposite direction to the above case, the upper connecting fitting 6 and the lower connecting fitting 6 move in the direction of the upper stopper 15 and the lower stopper 17, respectively, and the joint 7 and the connecting fitting 8 , the facing timbers 11, 11, 11 move outward in parallel, and the central facing timber 11 pushes outward the supports 3, 3 of the formwork members 2 and 2', and the central part The face wood 11 is inserted between the gap 12 of the supports 3 and 3, and the state shown in FIG. By pouring concrete between the frame 1 and the frame 1, a concrete product can be obtained.

本考案は、型枠形状において、正四辺形に限定
されるものではなく、正三角形及び一般に正多辺
型又は円型の型枠においても適用可能である。
The present invention is not limited to regular quadrilateral formwork shapes, but is also applicable to equilateral triangular and generally regular polygonal or circular formworks.

又、伸縮金具5を本実施例のような上部連結金
具6、及び下部連結金具6とジヨイント7をもち
いたものに限定されない。又、間隙部にも本実施
例のように左右に二つの間隙を設けるものに限ら
ず、その一方の辺だけでもよいのであり、又、閉
鎖多辺形の全部の辺に間隙を設けたものでよいの
である。
Further, the telescopic fitting 5 is not limited to the one using the upper connecting fitting 6 and the lower connecting fitting 6 and the joint 7 as in this embodiment. Furthermore, the gap part is not limited to the one in which two gaps are provided on the left and right sides as in this embodiment, but it is also possible to provide gaps in only one side, or the gap part is provided in all sides of the closed polygon. That's fine.

(効果) 1 本考案は面木11と受木3,3とを圧着させ
たので、蝶番を用いたものに比較して、スキ間
なく、コンクリートを打設固結中に、コンクリ
ートのトロもれを防止できる。
(Effects) 1 Since the present invention crimps the face wood 11 and the receivers 3, 3, there is no gap in the concrete compared to the case where hinges are used, and there is no melting of the concrete during pouring and consolidation. This can be prevented.

2 本考案は、構造が比較的単純である上に、面
木と受木3,3の圧着により構成しているの
で、蝶番を用いた従来例より強度の点ではるか
にすぐれており、又、蝶番をもちいたもののよ
うに、ガタがこない。
2. The structure of the present invention is relatively simple, and since it is constructed by crimping the face wood and the brackets 3, 3, it is far superior in strength to the conventional example using hinges. , it doesn't wobble like something with hinges.

3 本考案は構造が比較的単純なので、製作費も
かからず、しかも、何回でも使用が可能であ
る。
3. Since the structure of the present invention is relatively simple, it does not require any manufacturing costs and can be used any number of times.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案型枠の正四辺形態様における平
面図、第2図は正面断面図、第3図は、第1図の
うちの連結金具8、面木11,11,11、受木
3,3付近の詳細図、第4図は、伸縮金具によ
り、面木11が受木3,3から解放される中途の
状態をあらわした平面図、第5図は、第4図のう
ちの右面木11、受木3,3付近の詳細図、第6
図は、伸縮金具により面木11が受木3,3から
完全に解放され、型枠材2,2′が内側に曲折し
ている状態をあらわした平面図、第7図は、第6
図の正面断面図を示す。 1……内側型枠、2,2′……型枠材、3,3
……受木、4……立型シヤフト、5……伸縮金
具、6……連結金具、7……ジヨイント、8……
連結金具、9,9……ピン、10……横板、1
1,11,11……面木、12……間隙、13…
…横板、13′……突条、14……突条、15…
…上部ストツパー、16……中央部ストツパー、
17……下部ストツパー、18,18……ナツ
ト、19……底板。
Fig. 1 is a plan view of the formwork of the present invention in a regular quadrilateral configuration, Fig. 2 is a front cross-sectional view, and Fig. 3 is a plan view of the formwork of the present invention in the form of a regular quadrilateral. 3 and 3, and FIG. 4 is a plan view showing the midway state in which the face wood 11 is released from the receivers 3 and 3 by the expandable metal fittings. FIG. Detailed view of right side tree 11, receiving tree 3, 3 vicinity, No. 6
The figure is a plan view showing the state in which the face wood 11 is completely released from the support pieces 3, 3 by the telescopic fittings, and the formwork members 2, 2' are bent inward.
A front sectional view of the figure is shown. 1...Inner formwork, 2,2'...Formwork material, 3,3
... Tree receiver, 4 ... Vertical shaft, 5 ... Telescopic fitting, 6 ... Connection fitting, 7 ... Joint, 8 ...
Connecting metal fittings, 9, 9...Pin, 10...Horizontal plate, 1
1, 11, 11... face wood, 12... gap, 13...
...Horizontal plate, 13'...Protrusion, 14...Protrusion, 15...
...Top stopper, 16...Central stopper,
17... Lower stopper, 18, 18... Nut, 19... Bottom plate.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 打設コンクリートの内壁を構成する内側型枠に
おいて、その一個所又は複数個所に立方向に間隙
を設け、該間隙の両側の弾性のある型枠材を内方
向に曲折せしめ、該間隙の両側端に、受木を設
け、該内側型枠の中心軸に、立型シヤフトを設
け、伸縮金具を介して面木を連設し、右面木を両
受木間に挿入して、該間隙の両側の型枠材を外方
向に押し出して所定の型に成形出来るようにした
ことを特徴とする伸縮式コンクリート内側型枠。
In the inner formwork that constitutes the inner wall of poured concrete, a gap is provided in the vertical direction at one or more places, and the elastic formwork material on both sides of the gap is bent inward, and the ends of the gap are bent inward. , a vertical shaft is provided at the central axis of the inner formwork, the face wood is connected via an expandable metal fitting, the right face wood is inserted between both the support pieces, and both sides of the gap are A retractable concrete inner formwork characterized by being able to be formed into a predetermined shape by extruding the formwork material outward.
JP3011586U 1986-03-04 1986-03-04 Expired JPH03326Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3011586U JPH03326Y2 (en) 1986-03-04 1986-03-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3011586U JPH03326Y2 (en) 1986-03-04 1986-03-04

Publications (2)

Publication Number Publication Date
JPS62142502U JPS62142502U (en) 1987-09-08
JPH03326Y2 true JPH03326Y2 (en) 1991-01-09

Family

ID=30834633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3011586U Expired JPH03326Y2 (en) 1986-03-04 1986-03-04

Country Status (1)

Country Link
JP (1) JPH03326Y2 (en)

Also Published As

Publication number Publication date
JPS62142502U (en) 1987-09-08

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