JPH11182038A - Assembling metal fitting for concrete form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide assembling metal fittings for a concrete form by which forms can be rapidly assembled without nailing sash bars at the edges of a wooden board form and also without making through holes in the wooden board form. SOLUTION: The assembling metal fittings are constituted of metal fittings 1 holding the sash bars at the edges of a wooden board form and forming notched holes la for engaging at both side faces and supporting a batten from the backside, a sepatation plate 2 having bored holes 2a at both ends, and an engaging bar 3 inserted in the both holes 2 of the separation plate to be engaged in the notched holes at both side faces of the metal fittings. A through hole is made in the sash bar at the edge of adjoining wooden board forms and both ends of the separation plate are inserted between the connection parts of sash bars and the engaging bar is inserted in the through holes of the sash bar and the holes at both ends of the separation plate to hold the sash bar at the edge by the metal fittings and fasten and fix the engaging bar in the engaging notched holes or the metal fittings.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete formwork fitting for assembling a wooden board such as plywood with an edge provided at an edge thereof.

[0002]

2. Description of the Related Art In the construction of a concrete formwork in which a pier is provided at an edge of a wooden board such as a plywood, an edge pier of an adjacent formwork is hit with a nail to form a timber. Through the hole, as shown in FIG.
A plate nut 11 or a polycone (registered trademark) 11A (FIG. 3) is screwed into the inside through the separator bolt 10 to position it, and a foam tie (registered trademark) 12 is screwed in from the outside and tightened. The mainstream method is to strike a wedge plate 9 into a rectangular hole formed in the foam tie with a fitting 13 in contact with a pier and to support a formwork with the thick material to assemble.

[0003]

However, in the above-mentioned conventional method, the edge piers of the adjacent formwork are nailed and joined together with a nail, so that the position is easily shifted, and a step is formed on the joining surface of the formwork wood board. However, it has drawbacks in that the concrete wall surface is difficult to finish evenly, requires careful attention and labor, and requires advanced technology and skill. or,
Since the holes for mounting the separator bolts are made to penetrate the wooden board of the formwork, there are disadvantages such as the misalignment of the opposing holes is likely to occur, and the installation and removal of the separator bolts require time and effort.

[0004] Due to the above-mentioned drawbacks, not only can the construction period and the cost be reduced significantly, but also the edge piers are easily nailed or pulled out with nails, and the piers are easily damaged. Therefore, there is a problem that it is difficult to reuse the material repeatedly, and it is not possible to reduce the form waste material (industrial waste) and to reduce the form waste material treatment and the processing cost.

[0005]

Means for Solving the Problems In view of the above-mentioned problems, the present inventor has conducted extensive research and trial production, and as a result, without punching edges of adjacent formwork with nails, and making holes in the wooden board of the formwork. A concrete formwork fitting that successfully assembled a concrete formwork in a short time without penetrating it.
The solution is as follows. That is,

(1) Edge member of a wooden board formwork A metal fitting which is bent in a U-shape so as to sandwich a tree, has notch holes on both sides, and can be supported by a thick material from the back, and a formwork. A separation plate having holes formed at both ends so as to be able to hold the width, and a hole formed at both ends of the separation plate is passed through, and is locked in locking notches provided on both side surfaces of the metal fitting. It consists of a locking rod made to be able to penetrate a hole in the edge pier of the adjacent wooden board form, pass both ends of the separator plate between the joints of the edge pier, and pass it to the edge pier. The penetrating hole and the locking bar are passed through holes drilled at both ends of the separation plate, and the edge bar is sandwiched by the metal fitting, and the locking rod is locked in the locking notch hole of the metal fitting. An assembly metal fitting for a concrete formwork, wherein the metal fitting is fastened.

(2) The wooden board form is bent into a U-shape so as to sandwich the edge pier, and a relief hole is provided on the back of a bracket having locking notches on both sides, and the above and below the relief hole are provided. A rectangular hole for inserting a wedge plate into a plate bent at a right angle in a direction opposite to the direction bent in a U-shape is provided, a thick wood is applied to an edge pier of the wooden board formwork, and a wedge plate is fitted to the rectangular hole. The concrete fitting as described in the above (1), which is supported by driving.

(3) The edge of the wooden board form is bent in a U-shape so as to sandwich the pier, and the bending length of one side of the metal fitting provided with the locking notch on both sides is increased, and the adjacent edge is formed. The assembly fitting for a concrete form according to the above (1) or (2), wherein the assembly is formed by being bent in an L-shape along the inner side surface of the partial crosspiece.

(4) Both ends of a thin flat plate with holes at both ends are formed stepped to a width smaller than the width of the separator plate, and positioning stoppers are removably fitted from both ends. The assembly metal fitting for a concrete form according to any one of (1) to (3), wherein the form width is maintained.

(5) A hole is formed in the end of two thin flat plates which are inserted into the hollow plate so that they can be fitted and slid from both sides, so that the thin flat plate does not come out of the hollow plate and can be freely inserted and removed. A concrete formwork assembly according to any one of (1) to (3), wherein a positioning stopper is removably fitted to the two thin flat plates to maintain the formwork width. It is.

(6) The two ends of the hollow plate are slit from the center of the thickness of the hollow plate, bent right and left at right angles, and inserted into both sides of the hollow plate so as to be fitted and slidable. (1) to (3), wherein a hole is formed in an end portion of the flat plate so that the thin flat plate is prevented from falling out of the hollow plate so that the thin flat plate can be freely taken in and out, and the form width is maintained. An assembly metal fitting for a concrete formwork according to any one of the above.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings showing an embodiment. As shown in FIG. 1, the present invention has a U-shape so as to sandwich an edge crosspiece of a wooden board formwork. Bent into
Metal fittings 1 and 1 provided with locking notches on both side surfaces so that they can be supported by a thick material from the back, Sepaplate 2 having holes formed at both ends to maintain the width of the formwork, Locking rods 3 and 3 are formed so as to pass through holes formed at both ends of the separation plate and to lock into locking notches provided on both side surfaces of the metal fitting.

As shown in FIG. 4, the metal fitting 1 has substantially L-shaped locking notches 1a, 1a, which are horizontally and vertically continuous on both sides bent in a U-shape so as to sandwich an edge crosspiece of a wooden board formwork. Is provided with a tapered angle a so as to facilitate insertion of the bent front end portion and formed with a divergent shape, and the locking portion of the locking notch hole is formed with a gently tapered angle b and formed with a flared mouth. I have.

The metal fitting 1 is provided with a relief hole 1b at the back so that a thick material can be applied to an edge crosspiece of the formwork, and is bent in the above-mentioned U-shape above and below the relief hole. Rectangular holes 1d, 1d are drilled at the ends of the plates 1c, 1c bent at right angles to the opposite direction so that a wedge plate can be pressed against the outside of the thick material and driven.

The dimension W bent in a U-shape in FIG. 4 is, for example, that the thickness of the edge pier of the formwork is 30 mm and the width is 60 mm.
When the thickness of the wooden board is 10 mm and the formwork is assembled by planar joining as shown in FIG.
When assembling the formwork with the corners joined at the outer angle A as shown in Fig. 7, the thickness is set to 100 to 101 mm in consideration of the thickness and width of the adjacent edge pier and the thickness of the wooden board 6.

When assembling the formwork with corner joints of the inner angle B shown in FIG. 14, the dimension W bent into a U-shape in FIG. 4 is set to 30 mm, and the bending length of one side is increased.
The notch hole 1a is formed by bending into an L-shape along the inside of the edge crosspiece of the adjacent formwork, and the locking notch hole 1a is provided with a vertically long hole in each of the L-shaped surfaces as shown in FIG. It cuts out horizontally from the center and communicates, the other side cuts out and communicates with the vertically drilled elongated hole from the center, the locking part has a gentle taper angle b, and the center of the elongated hole expands It is formed as follows.

[0017] Relief hole 1 for thick material provided at the back of the bracket
b, the height dimension h shown in FIG. 4 is slightly larger than the thickness of the end piece, and for example, in the case of the end piece made of a 50 mm square steel pipe, 55 to 65 mm, and in the case of the end piece made of a 60 mm square pipe, Is 65 to 75 mm, and when the 50 mm square steel pipe end thick material is doubled, 110 to 130 mm, 60
130 to 15 mm for double-ended square steel pipe ends
The height is preferably set to 0 mm, and the height H of the metal fitting is changed accordingly.

A dimension S (FIG. 4) from the inner surface to the ends of the rectangular holes 1d, 1d formed in the plates 1c, 1c.
May be changed according to the size of the thick material, or a plurality of (three in the embodiment) rectangular holes 1d may be formed at positions corresponding to the size of the thick material as shown in FIG. Alternatively, it is also possible to increase the length of the rectangular hole and change the width of the wedge plate.

The material of the metal fitting 1 is preferably formed of a steel sheet having a thickness of 1.5 to 3 mm, which has been subjected to a surface treatment such as galvanization. When the thickness of the steel sheet is small, or the durability of the metal fitting is improved. In this case, it is preferable to reinforce by forming ribs as appropriate.

The separation plate 2 is 1 m as shown in FIG.
holes for inserting locking rods at both ends of a thin metal plate of about m
a, 2a are formed, and both ends are formed in steps so as to be smaller in width than the width of the separation plate, and positioning stoppers 4 and 4 are fitted, and the positioning stoppers are applied to the stepped portions. L is set to the form width.

The separator plate 2 needs to be cut from the concrete wall after the concrete is cast and the formwork is disassembled, and FIGS. 8 and 9 show a separator which does not need to be cut at both ends. It is an example of a plate. That is,
In the embodiment shown in FIGS. 8 and 9, a hole 2a for inserting a locking rod into two thin metal flat plates 2B, 2B having a thickness of about 1 mm inserted so as to be fitted and slidable on both sides of a hollow plate 2A. , 2a and long holes 2b, 2b, and the support pins 5, 5 are fixed to the hollow plate through the long holes so that the thin flat plates 2B, 2B do not come off from the hollow plate. In FIG. 9, positioning stoppers 4 and 4 are fitted. In FIG. 9, both ends of the hollow plate 2A are cut from the center of the thickness of the hollow plate and bent at right and left sides to make the bent portion a positioning stopper. .

As shown in FIG. 10, the positioning stopper 4 has a slit hole 4a formed in the center of a square (or round) steel plate in accordance with the width and thickness of both ends of the separation plate. And can be detachably fitted from both ends of the separation plate. As shown in FIG. 11, the positioning stopper may be formed by forming a slit hole 4a at the bottom of the poly (polyethylene) cap 4A and fitting it into the separator plate from both ends.

The locking bar 3 is a round bar bent at right angles in an L-shape as shown in FIG. 12 and provided with threaded portions 3a at both ends to prevent the formwork or the separator plate from coming off. Nut can be hooked, the tip of the long part is tapered 3b
To make it easier to insert. The thickness of the locking rod, the holes drilled at both ends of the separation plate into which the locking rod is inserted, and the holes drilled in the edge bar of the form are 2-3 mm.
It is preferable to provide such a gap.

Next, an assembling example of assembling a formwork using the concrete formwork metal fitting according to the present invention will be described with reference to FIG. 1. Referring to FIG. The two ends of the plate 2 are passed between the adjacent edge bars, and the holes penetrated through the edge bars are made to substantially coincide with the holes 2a formed at both ends of the separation plate. Insert 3,3. Holes penetrating the edge pier of the formwork are provided with positioning stoppers 4 and 4 for forming the wooden board 7 of the formwork.
7 in a state of being in contact with the inner surface thereof, so as to substantially coincide with holes formed in both ends of the separation plate.

Next, the clamping holes formed by bending the metal fittings 1 and 1 into the U-shape are inserted into the locking notches 1a and 1a of the metal fittings so that the locking rods 3 and 3 are inserted into the edges of the mold. Inserting into the pier, sandwiching the adjacent edge pier and pushing down at the same time, along the locking portion of the gently tapered locking notch,
The locking bar is pulled, and the inner surfaces of the wooden plates 7, 7 of the form are pressed by the positioning stoppers 4, 4 of the separation plate 2, so that the form width is securely held.

Further, the thick ends 8, 8 are applied to edge piers exposed from the escape holes provided at the backs of the fittings 1, 1,
The wedge plates 9, 9 are driven into rectangular holes of a plate bent at right angles to the U-shaped upper and lower sides of the relief holes, and the thick ends are pressed to support the formwork.

Concrete is poured into the formwork assembled as described above, and the formwork is dismantled after a curing period (a period during which the concrete hardens). First, the wedge plates 9 and 9 are pulled out, and the end thick members 8 and 8 are removed.
, And the metal fittings 1 and 1 are pulled out from the edge pier of the formwork, and the formwork is dismantled and removed.

When the formwork is dismantled and removed, both ends of the separator plate protrude from the wall surface of the concrete frame, so it is necessary to cut off and finish the wall surface.
By using the separator plate shown in the embodiment of the present invention, by pushing both ends protruding from the concrete skeleton wall into the concrete skeleton, so as not to protrude from the wall, it is possible to finish the concrete skeleton wall without cutting. it can.

[0029]

The metal fittings for concrete formwork according to the present invention are joined together by sandwiching the edge bars of the adjacent formwork, and can be assembled through the separator plate between the edge bars. It does not require any skill or skill, and can be quickly assembled and dismantled without any displacement.
It is possible to significantly shorten the construction period and reduce the construction cost.
Also, the nails are not hit or pulled out on the edge piers of the formwork, so that the piers are not damaged, and the formwork can be assembled without penetrating the wooden board, so that the formwork can be reused. This is effective in reducing waste of formwork, and in reducing waste material processing and processing costs.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a concrete formwork fitting according to the present invention.

FIG. 2 is a sectional view of a main part showing a conventional example.

FIG. 3 is a sectional view of an essential part showing an embodiment using a polycone (11A) instead of the plate nut (11) in FIG.

FIG. 4 is a perspective view showing an embodiment of the metal fitting (1).

FIG. 5 is a perspective view showing an embodiment of the fitting.

FIG. 6 is a perspective view showing an embodiment of the fitting.

FIG. 7 is a side view showing an embodiment of the separation plate (2).

FIG. 8 is a side sectional view showing an embodiment of a separation plate.

FIG. 9 is a plan view showing an embodiment of a separation plate.

FIG. 10 is a perspective view showing an embodiment of a positioning stopper (4).

FIG. 11 is a perspective view showing an embodiment of a positioning stopper.

FIG. 12 is a perspective view showing an embodiment of a locking rod.

FIG. 13 is a cross-sectional view of a main part showing a planar joining assembly example of the formwork.

FIG. 14 is a cross-sectional view of a main part showing a corner joining assembly example of the formwork.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal fitting 1a Lock notch hole 1b Escape hole 1c Plate 1d Rectangular hole 2 Sepa plate 2A Hollow plate 2a Hole 2B Thin plate 2b Long hole 3 Lock bar 3a Screw part 4, 4A Positioning stopper 4a Slit hole 5 Support pin 6 Edge Girder 7 Wood board 8 Thick wood 9 Wedge board 10 Sepabolt 11 Plate nut 11A Poly cone 12 Form tie

Claims (6)

[Claims] An edge member of a wooden board form is bent into a U-shape so as to sandwich the tree, a notch hole is provided on both side surfaces, and a metal fitting can be supported by a thick material from the back, and a form width. Can be held so that holes can be formed in both ends of the separation plate, and holes formed in both ends of the separation plate can be passed through the separation notches provided on both sides of the metal fitting. And through a hole in the edge pier of the adjacent wood board form, pass both ends of the separator plate between the joints of the edge pier, and penetrate the edge pier. The locking bar is passed through the hole formed and the holes drilled at both ends of the separator plate, and the edge bar is sandwiched by the metal fittings. The locking bar is locked in the locking notch hole of the metal fitting, and tightened. An assembling metal fitting for a concrete formwork, comprising: 2. A wooden board form is bent into a U-shape so as to sandwich an edge bar, and a relief hole is provided at a back portion of a bracket having locking notches on both side surfaces. A rectangular hole for inserting a wedge plate in a plate bent at a right angle in a direction opposite to the direction bent in the shape of a letter is provided, a thick wood is applied to an edge pier of the wooden board formwork, and a wedge plate is fitted to the rectangular hole. 2. The metal fitting for a concrete formwork according to claim 1, wherein the metal fitting is supported by being driven. 3. An edge portion of a wooden board form is bent in a U-shape so as to sandwich the edge bar, and a metal fitting provided with locking notches on both sides thereof has a longer bending length on one side, so that an adjacent edge portion is formed. The assembly fitting for a concrete formwork according to claim 1, wherein the assembly is formed by bending an L-shape along the inner surface of the crosspiece. 4. A mold in which both ends of a thin plate separator plate having holes at both ends are stepped to a width smaller than the width of the separator plate, and positioning stoppers are removably fitted from both ends. The assembly fitting for a concrete formwork according to any one of claims 1 to 3, wherein the frame width is maintained. 5. A hole is formed in an end of two thin flat plates which are inserted into the hollow plate so that they can be fitted and slid from both sides,
4. The thin plate is detachably inserted into and out of the hollow plate so as not to fall out of the hollow plate, and a positioning stopper is removably fitted into the two thin plates to maintain a form width. An assembly fitting for a concrete formwork according to claim 3. 6. Two thin flat plates inserted at both ends of the hollow plate so as to be slit from the center of the thickness of the hollow plate and bent right and left at right angles and to be fitted and slid from both sides of the hollow plate. 4. A hole is formed in an end of the hollow plate so that the thin plate does not come out of the hollow plate so that it can be freely inserted and removed, and the form width is maintained. The metal fittings for a concrete formwork according to the above.