JPH0552104U - Square bracket - Google Patents

Abstract

(57) [Abstract] [Purpose] The corners 24 of a pair of enclosures 22 that are adjacent to each other at a substantially right angle.
Provided is a square fastener 1 for firmly tightening. [Structure] The square fastener 1 is mounted on a side opposite to the corner 24 of a crossing portion 26 of the rod 25 via a pair of rods 25 arranged along each surrounding body 22. The structure of the square fastener 1 is provided with the substantially U-shaped fitting portions 4 that are detachably engaged with the rod-shaped body 25 at both ends of the main body frame 2. At the tip of the fitting part 4, the rod-shaped body 25
A locking means 8 for locking the inside of the fitting part 4 is detachably provided. At the central part of the main body frame 2, the crossing part that advances from the main body frame 2
The tightening means 11 for pressing the corners 24 to widen the space between the main body frame 2 and the intersecting portions 26 and tightening the corner portions 24 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a square metal fitting for tightening a corner portion of a formwork when forming a concrete wall or a concrete block, for example.

[0002]

[Prior Art]

 For example, to form a concrete wall or the like, a mold is assembled according to the surface shape of the wall, and concrete is poured into the mold.

Conventionally, in the case where the formwork is made of wood, in order to prevent the formwork from being displaced outwardly by the pressure when pouring concrete, support rods are passed along the outer surface of the formwork to support the formwork. Also, for example, at the corners of a pair of molds that are adjacent to each other at a substantially right angle, the corners should be tightened so that the intersections of the ends of the support rods passed to each mold intersect. It is designed to be connected with a wire.

[0004]

[Problems to be solved by the device]

 However, as in the past, at the corners of a pair of molds that are adjacent to each other at a substantially right angle, if the intersections where the ends of the support rods that cross the molds intersect are connected by wire or the like, It is difficult to tighten the corners tightly, and the pressure when pouring the concrete opens the corners of the formwork, causing the mold to collapse and causing the concrete to flow out, which may be dangerous to the operator.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an angle fitting that can firmly tighten the corners of a pair of enclosures that are adjacent to each other in a substantially right angle shape. It is something.

[0006]

[Means for Solving the Problems]

 According to the present invention, a corner portion 24 where a pair of substantially right-angled adjacent enclosures 22 intersect is provided with a pair of rod-like bodies 25 arranged along each enclosure 22 and whose ends intersect each other. It is a square metal fitting 1 that is mounted and tightened on the side opposite to the corner 24 of the intersection 26 of 25, and is a body frame 2 and the rod-shaped bodies provided in both ends of the body frame 2 in a substantially U-shape. A fitting portion 4 that is detachably fitted to the fitting 25; locking means 8 that is removably mounted between the tip portions of the fitting portion 4 to lock the rod-shaped body 25 in the fitting portion 4; Fastening having a screwing portion 12 provided in the central portion of the main body frame 2 and a screwing member 13 that is screwed into the screwing portion 12 and is capable of moving forward and backward with respect to the intersecting portion 26 of the rod-shaped body 25. And means 11.

[0007]

[Action]

 In the present invention, when tightening the corners 24 where a pair of substantially right-angled adjacent enclosures 22 intersect, a pair of rod-like bodies 25 arranged along each enclosure 22 and whose ends cross each other The square fastener 1 is attached to the opposite side of the intersection portion 26 of the rod-shaped body 25 from the corner portion 24. The fitting of the bracket 1 is performed by fitting the fitting portions 4 at both ends of the main body frame 2 into the rod-shaped bodies 25, and attaching the locking means 8 to the fitting portions 4 so that the fitting portions 4 are fitted inside the fitting portion 4. The rod-shaped body 25 is locked.

Then, by screwing the screwing member 13 of the tightening means 11 provided in the center of the main body frame 2 in the tightening direction, the screwing member 13 advances toward the intersection 26 of the rod-shaped body 25. And presses the intersection 26. Along with this, the space between the main body frame 2 and the intersecting portion 26 is opened, and the fitting locking portion of the fitting portion 4 of each rod-shaped body 25 is integrally formed with the main body frame 2 that moves away from the intersecting portion 26. Moves, the ends of a pair of adjacent enclosures 22 that are adjacent to each other in a substantially right angle are united with the movement of each rod-like body 25, and the corners 24 of the enclosure 22 are firmly tightened.

[0009]

【Example】

 Hereinafter, a configuration of an embodiment of the present invention will be described with reference to FIGS.

FIG. 3 shows a square fastener 1, in which a reference numeral 2 denotes a metal main body frame having a rectangular hollow section, and both end faces 2a of the main body frame 2 are substantially C-shaped and have an angle of about 45 °. It is formed in each angle. In addition, a through hole 3 is formed in the center of the main body frame 2 so as to penetrate both side surfaces orthogonal to the longitudinal direction.

Reference numeral 4 denotes a fitting portion provided on both end surfaces 2 a of the main body frame 2. The fitting portion 4 includes a metal frame member 5 formed in a substantially U shape, and an inner center of the frame member 5. The metal partition member 6 is welded and fixed to the section, and is formed in upper and lower two stages. The outer central portion of the frame member 5 is welded and fixed to both end surfaces 2a of the main body frame 2, and the fitting portions 4 at both ends are oriented at 45 ° with respect to the longitudinal direction of the main body frame 2. The inner side of each fitting portion 4 is formed to have a size fittable to a horizontal rod 25 described later, and the inner surface 5a of the frame member 5 has a high friction coefficient when joined to the horizontal rod 25. For example, it is formed into a file surface.

In addition, through-holes 7 are coaxially formed at both ends of the frame member 5 and at the end of the partition member 6 at positions corresponding to the outer surface of the horizontal rod 25 fitted in the fitting portion 4. Has been formed.

Reference numeral 8 is a locking means, and the locking means 8 is formed to have a diameter capable of penetrating the through hole 7 of the fitting portion 4 and a length capable of penetrating all the through holes 7 of the fitting portion 4. A ring 10 is attached to the upper end of the pin body 9 for preventing the pin body 9 from falling out. The ring 10 is connected to the body frame 2 and the other end such as a chain (not shown) whose one end is fixed to each fitting portion 4 to prevent the pin body 9 from being lost.

Reference numeral 11 is a tightening means, and this tightening means 11 is composed of a nut 12 as a screwing portion and a screw shaft body 13 as a screwing member screwed to the nut 12. The nut 12 is arranged coaxially with the through hole 3 on the side surface of the body frame 2 on which the fitting portion 4 is inclined, for example, by welding or non-fixing. The screw shaft body 13 is rotatably inserted into the through hole 3 from a side surface of the main body frame 2 opposite to the side where the nut 12 is arranged, and is screwed into the nut 12. An operating portion 15 bent in a substantially L shape is formed at the outer end of the shaft portion 14, and a substantially L-shaped metal member 16 is rotatably connected to the tip of the screw shaft portion 14.

Next, a case will be described with reference to FIGS. 1 and 2 where the outer frame is tightened when the concrete wall is formed using the square fastener 1, for example.

In the figure, the formation locations outside the corners of the concrete wall (concrete wall formation portion is indicated by reference numeral 21) are shown, and 22 is a frame plate as an enclosure in which a plurality of vertical bars 23 are fixed to the outer surface, The pair of frame plates 22 are arranged in accordance with the outer surface shape of the wall, and are combined in a substantially right angle shape at a corner portion 24 where the pair of frame plates 22 intersect.

In addition, a horizontal bar 25 having a rectangular cross section as a rod-shaped body is horizontally passed over a plurality of vertical bars 23 of each frame plate 22, and one horizontal bar 25 is provided at an end of the horizontal bar 25. On the upper side, the other horizontal bar 25 intersects on the lower side, and a vertical bar 27 having a rectangular cross section is arranged at an inner corner portion of the intersection portion 26 opposite to the corner portion 24.

The square fastener 1 is to be mounted on the side of the intersection 26 of the pair of horizontal bars 25 opposite to the corner 24, and the mounting procedure is as follows. With the body 9 removed, and with the metal plate 16 of the screw shaft body 13 retracted to the body frame 2 side, one lateral bar 25 intersecting the upper side is fitted with one end upper portion of the body frame 2. The fitting portion 4 is fitted, and the fitting portion 4 at the lower end of the other end of the body frame 2 is fitted to the other horizontal bar 25 that intersects the lower side. Further, the inner surface 5a at the back of each fitting portion 4 is joined to the horizontal bar 25 in a substantially planar manner, and is inserted into the through hole 7 from above each fitting portion 4 to penetrate the lower surface of the fitting portion 4. In this mounted state, the internal angle formed by the body frame 2 and each horizontal bar 25 is approximately 45 °.

By rotating the screw shaft body 13 in the tightening direction, the tip end of the screw shaft body 13 advances from the main body frame 2 toward the vertical bar 27, and the substantially L-shaped metal plate 16 Is abuttingly fitted to the corner portion of the vertical bar 27, and further by continuing the rotating operation, the gap between the main body frame 2 and the vertical bar 27 is opened, and accordingly, the fitting portions 4 are joined together. The pin body 9 is pressed against the horizontal rod 25, and the frictional resistance caused by the pressure contact between the pin body 9 and the horizontal rod 25 causes the fitting portions 4 and the horizontal rod 25 to be firmly fixed to each other.

Further, by rotating the screw shaft body 13, the gap between the main body frame 2 and the vertical bar 27 is further increased, and the main body frame 2 which is separated outward from the vertical bar 27 is integrally formed. As each horizontal bar 25 is pulled outward, the vertical bar 27 relatively presses the intersection 26 of the horizontal bar 25, and the upper horizontal bar 25 is centered around the contact point with the vertical bar 27. As shown in Fig. 1, a force in the counterclockwise direction acts, and a force in the clockwise direction in Fig. 1 acts on the lower horizontal bar 25 around the point of contact with the vertical bar 27. The pair of adjacent frame plates 22 are brought closer to the corners 24 via 25, and the corners 24 of the pair of frame plates 22 are firmly tightened.

Therefore, even if concrete is poured between the insides of the frame plate 22, it is possible to prevent the corner portions 24 of the frame plate 22 from losing their shape, preventing the concrete from flowing out, and further improving the safety and efficiency of the worker. ..

Further, after the concrete wall is formed, the tightening of the screw shaft body 13 is loosened, and the pin body 9 is pulled out from each fitting portion 4, so that the square fastener 1 can be easily removed.

Since the square fastener 1 is provided with the fitting portions 4 in upper and lower two stages at both ends of the body frame 2, it can be attached regardless of the vertical crossing state of the pair of horizontal bars 25. That is, when the vertical crossing of the horizontal bar 25 is opposite to the above case, the one horizontal bar 25 crossing the lower side is fitted with the fitting portion 4 at one lower end of the body frame 2. The other horizontal bar 25 crossing the upper side is fitted with the fitting portion 4 on the other end of the main body frame 2.

Next, a case where the inner frame is tightened when the concrete wall is formed by using the square fastener 1, will be described with reference to FIG.

The figure shows the formation points inside the corners of the concrete wall (concrete wall formations are indicated by reference numeral 21), and the pair of frame plates 22 are arranged in accordance with the inner wall surface shape, Are combined in a substantially right angle shape at a corner 24 where the frame plates 22 intersect. The vertical rail 23a is fixed to one frame plate 22 (horizontal horizontal direction in the drawing) and the vertical rail 23b is fixed to the other frame plate 22 (vertical vertical direction in the drawing).

Further, a horizontal bar 25 is horizontally fixed to the plurality of vertical bars 23 of each frame plate 22, and one horizontal bar 25 is on the lower side and the other horizontal bar 25 is at the end of the horizontal bar 25. Are crossed to the upper side, and a vertical bar 27 is arranged at an inner corner portion of the crossing portion 26 opposite to the corner portion 24.

Also in this case, as in the above-described embodiment, the corner fitting 1 is mounted on the side opposite to the corner 24 of the intersection 26 of the pair of horizontal bars 25. It should be noted that one of the horizontal bars 25 intersecting with the lower side is fitted with the fitting portion 4 at one end of the main body frame 2 and the other horizontal bar 25 intersecting with the upper side is provided with the main frame 2. The fitting portion 4 on the upper side of the other end is fitted.

By rotating the screw shaft body 13 in the tightening direction, the tip end of the screw shaft body 13 advances from the main body frame 2 toward the vertical bar 27, and the substantially L-shaped metal plate 16 Are abuttingly fitted to the corners of the vertical bar 27, the body frame 2 and the vertical bar 27 are spaced apart from each other, and the pin body 9 of each fitting part 4 is pressed against the horizontal bar 25. Further, while the space between the main body frame 2 and the vertical bar 27 is opened, the fitting portion of each fitting portion 4 of each horizontal bar 25 is integrated with the main body frame 2 that moves inward with respect to the vertical bar 27. The frame plates 22 are pulled toward each other inwardly along with the movement of the horizontal bars 25 via the vertical bars 23, and the ends of the frame plates 22 cross each other. The corners 24 of the frame plate 22 are firmly tightened by being pushed toward each other toward the portion 26.

FIG. 5 shows a state in which the concrete wall is formed by pouring concrete 41 into the concrete wall forming portion 21 by the outer frame and the inner frame as described above.

Next, FIG. 6 and FIG. 7 show another embodiment of the square fastening member 1. In this embodiment, the main body frame 2 is obliquely arranged, and the apex angle is provided at both ends of the main body frame 2. A horizontal portion 31 having an isosceles triangle shape having an angle of about 90 ° is provided, and the fitting portion 4 is welded and fixed to each end portion 32 of the two sides of the horizontal portion 31. Each fitting portion 4 is formed in a substantially U-shape having a through hole 7 and is composed of a frame member 33, which is oriented at 45 ° with respect to the longitudinal direction of the main body frame 2. Although the locking means 8 and the tightening means 11 are omitted, the structure is the same as that of the above embodiment.

The corner fitting 1 selectively uses the fitting portions 4 at one end of the main body frame 2 or the fitting portions 4 at both ends of the main body frame 2, and includes a pair of horizontal bars 25 vertically Depending on the intersecting state of, one side or the other side of the main body frame 2 is inverted and used.

Further, in this embodiment, since the side surface of the main body frame 2 is used by being turned over, the tightening means 11 has a structure such that the tightening operation can be performed from either side of the main body frame 2 or the main body frame 2 is attached or detached. The structure is such that the direction of the tightening operation can be reversed as much as possible.

Further, as still another embodiment, a structure similar to that of the square fastening 1 shown in the embodiment of FIGS. 5 and 6 is divided into one side and the other side at the center along the longitudinal direction. A dedicated structure may be used when one horizontal bar 25 crosses on the upper side and when the other horizontal bar 25 crosses on the upper side.

The tightening means 11 is not limited to the above-mentioned embodiment, and for example, instead of the nut 12, a boss may be integrally formed on the main body frame 2 and an internal thread may be formed inside the boss.

Further, the locking means 8 is not limited to the above-mentioned embodiment, but may be any structure that can be attached to and detached from the tip of the fitting part 4 and can lock the horizontal rod 25 in the fitting part 4.

[0036]

[Effect of the device]

 According to the present invention, a corner portion where a pair of enclosures that are adjacent to each other at a substantially right angle intersect with each other is formed through a pair of rod-shaped bodies that are disposed along each of the enclosures and whose ends intersect each other. It is possible to provide an angle fastening metal fitting that is mounted and tightened on the side opposite to the corner of the section, and can firmly tighten the corner of the enclosure.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a square metal fitting of the present invention when an outer frame is tightened.

FIG. 2 is a side view thereof.

FIG. 3 is a perspective view of the corner fastener.

FIG. 4 is a plan view when the inner frame is tightened.

FIG. 5 is a plan view of the concrete wall as it is formed.

FIG. 6 is a plan view showing another embodiment of the square fastener of the present invention.

FIG. 7 is a side view thereof.

[Explanation of symbols]

 1 Square fastening metal fitting 2 Main frame 4 Fitting part 8 Locking means 11 Tightening means 12 Screwing part 13 Screwing member 22 Frame plate as an enclosure 24 Corner part 25 Horizontal bar as a bar 26 Crossing part

Claims (1)

[Scope of utility model registration request] 1. An intersecting portion of a pair of rod-shaped bodies, with a pair of rod-shaped bodies disposed along each of the surrounding bodies and having ends intersecting each other at a corner where a pair of substantially right-angled adjacent enclosures intersect with each other. Is a square metal fitting that is mounted on the side opposite to the above-mentioned corner portion and tightens. And a locking means that is removably mounted between the tip parts of the fitting part to lock the rod-shaped body in the fitting part, and a screwing part provided in the central part of the main body frame,
A fastening means having a screwing member that is screwed into the screwing portion and is capable of advancing and retracting with respect to the intersecting portion of the rod-shaped body.