JP2002089036A - Metallic form for opening part of concrete structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the conventional problem that a once used form is seldom reused due to the adhesion of mortar to it and a difference in size depending on construction site because the form blocking a peripheral end face of an opening part such as a door, a window, a ventilation port, etc., of a building structure is formed into a portal shape or like a frame, the form made of plywood capable of simplifying its manufacture and assembly is mostly used, and it is removed and disposed after concrete is solidified, but its repetitive use is requested by the current society to achieve effective use of wooden materials. SOLUTION: This metallic form consists of an opening and closing form connecting a groove-shaped longitudinal frame 3 consisting of a longitudinal plate 31 whose thickness agrees with a thickness of concrete in the opening part and both side plates 32, 32 with a similar short groove-shaped ceiling frame 4 by a hinge 2 and a brace 5 whose triangular bar rods 52 are connected with both ends of a turn buckle 51, respectively, the triangular bar rod 52 on one side of the brace 5 is fixed to both side plates 42, 42 of the ceiling frame 4, and the triangular bar rod 52 on the other side is freely fitted and removed in the both side plates 32, 32 of the longitudinal frame 3 to constitute this form 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal form for an opening which is used for forming a rectangular doorway or a window on a wall of a concrete structure. It is characterized in that it can be used repeatedly.

[0002]

2. Description of the Related Art Conventionally, a formwork for constructing a concrete wall is generally manufactured by plywood as a whole,
After the concrete was solidified, it was removed and discarded.

If the mold is made of metal, it can withstand repeated use. In the formwork for the wall of the architectural body, it is practical because it is connected in a horizontal direction in a plane, but in the formwork that blocks the peripheral end surface of the opening such as the door, window, ventilation opening of the building structure, the gate type or the picture frame Plywood, which was easy to manufacture and assemble because of its shape, was dominant.

Further, in order to form a ventilation opening in the cloth foundation, a space is formed in advance in the step of forming the cloth foundation by interposing a wooden frame having a width of the ventilation opening, and after the cloth foundation is fixed, the wooden frame is removed. Except for this, the vent plate was attached with mortar.

[0005]

The conventional formwork for an opening is a wooden frame, which has been discarded because it cannot be used repeatedly. Although more demanded, once used wooden forms for openings, mortars adhered, and the sizes of the forms differed depending on the site, etc., were hardly reused.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention has been developed in order to form a mold for an opening by combining a plurality of members without special skill.
The invention according to claim 1 is a mold for a concrete structure such as a doorway, a window or the like, which has an upper surface end and a side surface, and has a groove-shaped vertical shape composed of a vertical plate having the same concrete thickness as the opening and both side plates. An open / close form that connects the frame and a short, similar groove-shaped top frame with a hinge, and a brace that connects triangular rods to both ends of the turnbuckle. One triangular form of the brace Is fixed to both side plates of the top frame, and the other triangular rod is fitted to and removed from both side plates of the vertical frame. According to a second aspect of the present invention, there is provided a formwork which closes the top and side surfaces of a rectangular opening of a concrete structure. And a groove-shaped adjustment frame to cover the top frame.

According to a third aspect of the present invention, there is provided a formwork for an entrance / exit of a concrete structure according to the second aspect, wherein a bottom plate is provided in a grooved vertical frame, and an adjuster bolt is penetrated therethrough.
The invention according to claim 4 is the formwork for a window of a concrete structure according to claim 2, wherein in addition to the upper surface and the side surface of the opening,
The lower frame of the inner width is placed and temporarily fixed so as to cover the lower surface. According to a fifth aspect of the present invention, there is provided an opening for a concrete structure, wherein the vertical frame of the opening and closing form and the side plate on the hinge side of the top frame are provided with an inclined edge which forms an acute angle when closed. It is a metal mold for a part.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a formwork for an opening according to the present invention. FIGS. 1 to 3 show a metal frame A for an opening which can be freely opened and closed for an entrance, also called a sweeping opening. FIG.
Is a formwork 1 for closing an upper end and side surfaces of an opening such as a doorway of a concrete structure, which is used when a reinforced concrete is cast while leaving a doorway on an outer wall or an inner wall after a floor surface is formed in advance of concrete. It is. The formwork 1 includes an open / close formwork comprising a vertical frame 3 and a top frame 4 connected by a hinge 2,
A brace 5 is fixed to the top frame 4 and fixed to the shaft, and is detachable from the vertical frame 3.

The hinge 2 may be formed such that the ends of the vertical frame 3 and the top frame 4 are alternately formed in a pipe shape through a shaft rod, or a hinge as a separate component may be attached.
The vertical frame 3 is basically made of an aluminum molded product. The vertical frame 3 is formed in a groove shape by two side plates 32, 32 which are integrally connected at right angles to a vertical plate 31 corresponding to the concrete thickness of the opening. On the hinge 2 side of 32, 32, an inclined edge 32a is provided. The side plates 32, 32 are provided with blind holes 32b, 32b. The vertical frame 3 is provided with a bottom plate 33 so that an adjuster bolt 34 can pass therethrough. Since the top frame 4 corresponds to the upper end portion, the top frame 4 is short, and the top plate 41 and both side plates 42, 42
, And a latching plate 41a is integrally provided on the open end side of the top plate 41 with a step. Hinge 2 of both side plates 42
Side is provided with inclined edges 42a, 42a.
2, 42 are provided with blind holes 42b, 42b. The inclined edge 32a of the vertical frame 3 and the inclined edge 42a of the top frame 4 are in contact at an acute angle when closed.

The brace 5 comprises a turnbuckle 51 and a substantially triangular rod 52 connected to both ends thereof. Although detailed illustration is omitted, for example, turnbuckle 5
1 is provided with a ring at each end, and a triangular rod 5
The two ends are wound and fixed. Both ends of one of the triangular rods 52 of the bracing 5 are extended, and the blind holes 42b, 42b, 32 of the top frame 4 and the vertical frame 3 are extended.
b, 32b. The side of the brace 5 on the top frame 4 side is previously rotatably mounted by caulking one end of one rod 52. One end of one of the braces 5 on the side of the vertical frame 3 is a hook bar 52a, 52a, which can be freely fitted and removed from the stop holes 32b, 32b. When not in use, the vertical frame 3 and the top frame 4 are removed in a straight line so as to be accommodated in the grooves formed by the respective side plates 32, 32, 42, 42 (see FIG. 2).

FIG. 3 shows a state in which the upper and side surfaces of an opening serving as an entrance and exit of a concrete structure are closed. That is, first, the left and right side surfaces and the upper surface end are closed with a pair of the above-mentioned molds 1. Specifically, after the vertical frame 3 is set up, the top frame 4 is once defeated. Then, the inclined edge 32a of the vertical frame 3 and the inclined edge 4 of the top frame 4
2a to form an acute angle. Next, the top frame 4 is connected to the hinge 2
The vertical frame 3 and the top frame 4 are made substantially perpendicular to each other, and then the hooks 52a, 52a of the rod 52 of the brace 5 are rotated.
Is rotated to fit into the blind holes 32b, 32b on the vertical frame 3 side. Next, the top plates 41, 41 of the top frames 4, 4
The cover plate 41a is covered with the groove-shaped adjustment frame 6 so as to correspond to the upper and side surfaces of the frontage of the entrance. Fine adjustment of the vertical frame 3 due to unevenness of the floor, etc.
4 will be performed appropriately.

In this way, a gate-shaped so-called inner frame on the side and top surfaces of the entrance can be formed. Although not shown, a concrete formwork for forming a wall surface is arranged on the outside of the vertical frames 3, 3 and on the top frame 4 and the adjustment frame 6, and they are connected by appropriate means.

FIG. 4 shows a metal formwork B for an opening for a window, except that the vertical frame 3 is not provided with a bottom plate 33 through which an adjuster bolt 34 is passed. It has the same structure as the metal frame A for the part, and in addition, since it is for a window, the lower frame 7 of the inner dimension of the lower surface of the opening is temporarily fixed and fixed so as to form a frame as a whole. is there. Although not shown, a removable support is interposed between the lower frame 7 and the top frame 4 so as to maintain an interval.

In the illustrated example, the brace 5 is connected to the side plates 32, 3
Stop holes 32b, 32b, 42b,
42b, the vertical plate 31 and the top plate 41
It is good also as a structure which protrudes a boss more and stops there. It should be noted that a plurality of different lengths of the vertical frame 3 and the top frame 4 and the lengths of the vertical plates 31 and the top plate 41 are prepared so as to correspond to various opening sizes.

[0015]

According to the first aspect of the present invention, the formwork for the upper end and the side of the opening of the concrete structure is connected with a hinge to form an opening and closing form. In addition to being able to assemble in a concrete manner, it is supported by a brace, so that strength can be maintained, it is easy to remove after fixing concrete, and it is economical because it is made of metal and can be used repeatedly.

According to a second aspect of the present invention, the upper and side surfaces of the rectangular opening are closed, and the pair of metal molds for the opening according to the first aspect and the top frame of the opening and closing mold are provided. It consists of a groove-shaped adjustment frame to be covered. If a plurality of adjustment frames are prepared, the vertical frame can be shared by openings having the same height but different widths. According to a third aspect of the present invention, there is provided an entrance / exit formwork for a concrete structure according to the second aspect, wherein a bottom plate is provided in a groove-shaped vertical frame and an adjuster bolt is penetrated, so that the height of the vertical frame can be finely adjusted. It is possible.

According to a fourth aspect of the present invention, there is provided the formwork for a window of a concrete structure according to the second aspect of the present invention. In the case of a window, the concrete side wall is located above and below the formwork. It is frame-shaped, and it is sufficient to hold the lower frame with a support as appropriate. According to the fifth aspect of the present invention, the vertical frame of the opening and closing formwork according to the first aspect and the side plates on the hinge side of the top frame are provided with an inclined edge which becomes an acute angle when closed. Is slightly raised to make a right angle, which facilitates assembly.

[Brief description of the drawings]

FIG. 1 is a perspective view of a mold with a bracing removed.

FIG. 2 is a side view of a mold.

FIG. 3 is a front view of a formwork for an entrance.

FIG. 4 is a front view of a window formwork.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Form frame 2 Hinge 3 Vertical frame 4 Top frame 5 Bracing 6 Adjustment frame 7 Lower frame

Claims (5)

[Claims] 1. A formwork for an upper surface end and a side surface of an opening of a concrete structure such as an entrance, a window, etc., comprising a vertical plate having a thickness corresponding to the concrete thickness of the opening and both side plates. An open / close form that connects the frame and a short, similar groove-shaped top frame with a hinge, and a brace that connects triangular rods to both ends of the turnbuckle. One triangular form of the brace A metal formwork for an opening of a concrete structure, characterized in that the rod is fixed to both side plates of the top frame and the other triangular rod is fitted to and removed from both side plates of the vertical frame. 2. An upper surface of a rectangular opening, comprising: a pair of two metal molds for an opening of a concrete structure according to claim 1; and a groove-shaped adjusting frame for covering a top frame of an opening / closing mold. And a metal formwork for an opening of a concrete structure, characterized in that the side surface is closed. 3. The mold for an entrance and exit of a concrete structure according to claim 2, wherein a bottom plate is provided in a groove-shaped vertical frame, and an adjuster bolt is penetrated. 4. The formwork for a window of a concrete structure according to claim 2, wherein a lower frame of the inner method is temporarily placed on a lower surface of the opening. 5. An opening for a concrete structure, characterized in that the vertical frame of the opening / closing formwork and the side plates on the hinge side of the top frame are provided with inclined edges which become acute when closed. Metal formwork.