JPH076285B2 - Joining structure of clamps and form panel using the clamps - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holding metal fitting used for joining form panels and the like and a joining structure for a form panel using the holding metal fitting.

[0002]

2. Description of the Related Art For example, when constructing concrete structures such as various foundations and walls, it is common to place concrete in a wooden concrete formwork for construction. Such a wooden concrete formwork is constructed by joining a formwork panel, which is formed by fixing a plurality of splints to the back surface of a wooden dam plate (plywood), in a flush manner. Adjacent formwork panels are joined flush with each other by striking the piers provided along the back surface of the end edge of the above with nails.

[0003]

However, in the above conventional technique, since the piers provided at the end of the dam plate are nailed together to join the form panel, the number of man-hours on site is large, Moreover, there is a problem that a step is likely to occur at the joint portion of the form panel due to vibration at the time of nailing and immaturity of the operator, concrete leaks out, and the concrete hitting surface after hardening deteriorates.

In view of such circumstances, an object of the present invention is to provide a sandwiching metal fitting and a formwork panel joining structure using the sandwiching metal fitting, which can easily and surely perform the joining work of the formwork panel and the like. To do.

[0005]

[Means for Solving the Problems] In order to achieve the above object,
The present invention has taken the following technical means. That is, the invention according to claim 1 is such that, in the holding metal fitting, the first holding plate having the first hooking piece projecting toward the back side on one widthwise side edge and the second hooking piece on the other widthwise side edge. An operation having a second holding plate projecting toward the back side and superposed on the back side of the first holding plate so as to be slidable in the width direction, and a rotating body superposed on the surface of the first holding plate so as to be rotatable and slidable A first elongated plate is provided in the central portion of the first sandwiching plate in the width direction, the first elongated plate is longer than the other side in the width direction of the first sandwiching plate in the direction crossing the first elongated hole. Two elongated holes are provided, the rotary body is slidably inserted into the first elongated hole, and the tip end portion is opposed to both sandwiching plates via a mounting pin fixed to the second sandwiching plate. A fulcrum pin that is rotatably pivotally mounted and that is slidably inserted into the second elongated hole is provided on the back surface of the rotating body in a protruding manner. .

According to the second aspect of the present invention, the frame panels in which the latching protrusions having the latched grooves on the opposite end side in the width direction are provided on the rear surface of the edge portion are arranged in parallel. It is characterized in that the two retaining projections located at the joint portion of the form panel are sandwiched by the retaining metal fittings so that the retaining pieces of the retaining metal fittings fit into the engaged grooves.

[0007]

According to the first aspect of the invention, when the operating member is rotated relative to the sandwiching plates, the fulcrum pin moves in the second elongated hole and the mounting pin moves in the first elongated hole at the same time. Since the tip end portion of the mounting pin is mounted on the second holding plate, the second holding plate slides relative to the first holding plate in the width direction as the mounting pin moves. Therefore, by inserting a hooked portion (a hooking protrusion in the embodiment) provided at an end of an object to be joined, such as a formwork panel, between the hooking pieces, and rotating the operating member of the holding metal fitting, Frame panels and the like can be joined very easily.

According to the second aspect of the present invention, since each hooking piece of the holding metal fitting fits into the hooked groove formed in the hooking projection, the form panel can be simplified simply by tightening the holding metal fitting with the operating member. In addition, the joint portion of the form panel is not displaced during the joining.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. In FIGS. 1 to 5, the edge shackle 1 used in this embodiment is a long piece made of an extruded material of aluminum alloy, and is a long piece fixed to the back surface of the edge of the wooden dam plate (plywood) 2. The scale plate-shaped mounting portion 3, the step portion 4 that is displaced by the thickness of the weir plate 2 toward the surface side (upper side in FIG. 4) of the mounting portion 3 at one side edge in the width direction of the mounting portion 3, and this step Long plate-shaped joint 5 that extends from the front edge of part 4 to the side opposite to mounting part 3.
And a reinforcing rib 6 provided upright on the back surface of the mounting portion 3 and parallel to the mounting portion 3.

In this specification, the front side of the edge stile 1 (or the form panel 14) means the inner side of the form in which concrete is placed, and the back side means the form. Means outside. A round separator 7 is attached to one side edge of the joint 5 in the width direction.
Semi-cracked (semi-circular) cutout holes 8 of approximately the same diameter as that are formed at predetermined intervals, so that the pair of edge piers 1 can be aligned with each other. As shown in FIGS. 3 and 4, a separable insertion hole 9 through which the end (screw portion 16) of the round separation member 7 can be inserted is formed when the joints 5 are butted.

On the rear surface of the edge of the joint portion 5, a hooking protrusion 10 is provided along the longitudinal direction of the edge stile 1. This hooking protrusion 10 has a cross section of approximately I which is slightly lower than the height of the step portion 4.
A groove portion 11 having a shape rail shape and having a U-shaped cross section on the edge side in the width direction.
A bifurcated joint surface 12 composed of the end edge of the joint portion 5 and the end edge of the hooking projection 10 is formed through the groove portion 11. A hooked groove 13 having a substantially V-shaped cross section is formed on the side opposite to the width direction of the hooking projection 10 and at a position corresponding to the groove 11, and a pair of abutting surfaces 12 are abutted against each other. The edge peg 1 is a hooking piece of a holding metal fitting 24 described later in the hooked groove 13.
They are joined together by fitting 25 and 27 and tightening the clamp 24.

FIG. 2 shows a formwork panel 14 having the edge stile 1 described above. This formwork panel 14 is made up of wooden weirboards 2.
Fix the above-mentioned edge berth 1 on the back surface of the edge in the width direction of
A wooden splint 15 along the longitudinal direction of the barrier plate 2 is fixed to the back surface of the barrier plate 2 at the intermediate portion in the width direction. That is, the edge pier 1
Is fixed to the form panel 14 by fixing the front surface of the mounting portion 3 to the back surface of the widthwise end edge of the barrier plate 2 so that the edge surface of the barrier plate 2 is joined to the step portion 4. As a result, the notch holes 8 of the edge stile 1 are arranged at predetermined intervals at the widthwise edge of the form panel 14 (the joint portion 5 of the edge stile 1). The means for fixing the mounting portion 3 and the dam plate 2 is
Bolts and nuts, wood screws or instant adhesives may be used.

Further, in this embodiment, the lateral width W of the formwork panel 14 is equal to or less than the lateral arrangement pitch of the round separators 7 (600 mm-
It is set to about 900 mm). That is, when designing a concrete formwork such as a wall body, generally, the strength calculation corresponding to the height of the structure or the like is performed to determine the vertical and horizontal arrangement pitches of the round separators 7. The horizontal width W of the circular separator 7 is set to be equal to or slightly smaller than the horizontal arrangement pitch of the round separators 7. Therefore, when the formwork panels 14 are installed side by side in the same plane, the separators are inserted into the barrier plate 2. There is no need to reopen hole 9.

4 and 5 show a joint structure of the form panel 14 when the form panel 14 is used vertically.
In the figure, a pair of formwork panels 14 having edge stiles 1 on both the left and right sides are attached to the joint surface 12 of the joint portion 5 by a clamp 24.
At the same position, the circular separable holes are inserted into the separable through holes 9 formed by joining a pair of cutout holes 8 formed at this time.
The threaded portion 16 of 7 penetrates from the inner side of the mold to the outer side. A round rod-shaped fixing member 18 having a slit 17 at the tip is screwed into the screw portion 16, and a pair of horizontal bars 19 are provided above and below the fixing member 18 to form the edge pier 1 and the wooden pier 15 ( It is attached to the back side of the vertical rail so as to be orthogonal to these.

A strip-shaped fixing plate 20 having an insertion hole in the center is inserted through the tip of the fixing member 18, and the fixing plate 20 is arranged so as to bridge the back side of the pair of horizontal rails 19. There is. The slit 17 of the fixing member 18 is inserted with a wedge plate 21 whose one edge in the width direction is in sliding contact with the fixing plate 20, whereby both adjacent formwork panels 14 are firmly joined flush with each other. On the back surface side of the formwork panel 14, a formwork support structure 22 in the form of a grid is framed from the vertical rails 1, 15 and the horizontal rails 18 in order to support the surface pressure at the time of placing concrete.

Next, with reference to FIGS. 6 to 8, a construction procedure for assembling a wall concrete form using the form panel 14 will be described. First, as shown in FIG.
The form panels 14 are arranged side by side so that they are abutted against each other at the joints 5 of the edge pier 1, and the retaining ridges 10 of the adjacent edge piers 1 are sandwiched by the clamping metal fittings 24. Formwork panel 14
Fixed to each other. At this time, by aligning the cutout holes 8 provided in the joint portion 5 of the edge timber 1 with each other, the separation insertion hole 9 is formed in the joint portion of each form panel 14.

Next, as shown in FIG. 7, the separator insertion hole is formed.
The round separator 7 is inserted into 9 from the empty side in the mold, the fixing member 18 is attached to the screw portion 16 of the round separator 7, and then the horizontal rails 19 are provided above and below the fixing member 18. Then, as shown in FIG. 8, the fixing plate 20 is inserted into the fixing member 18, and the slit of the fixing member 18 is formed.
By inserting the wedge plate 21 into 17, the work of assembling the form is completed.

As described above, according to the edge timber 1 and the formwork panel 14 according to this embodiment, the edge timber 1 is joined to the joint portion 5 thereof.
One side edge in the width direction is provided with semi-cracked notch holes 8 of approximately the same diameter as the circular separator 7 at predetermined intervals, and the notch holes 8 are aligned with each other to join a pair of edge piers 1. If the parts 5 are abutted against each other, each form panel is different from the conventional form in which the separable insertion hole 9 can be formed only in the middle part of the barrier plate 2.
The separator insertion hole 9 can be arranged at the joint portion of 14.
Therefore, even if excessive surface pressure is applied to the joint portion of the form panel 14 when pouring concrete, the tensile force of the round separator 7 directly acts on the joint portion 5 of each form panel 14 to open the joint portion. Can be effectively prevented, and the strength of the concrete formwork can be significantly improved.

Further, according to the mold assembly method of this embodiment,
The notch holes 8 of the edge stiles 1 of the two adjacent formwork panels 14 are aligned with each other to form a separable insertion hole 9, and the lateral width W of the formwork panel 14 is set to the lateral arrangement pitch of the round separers 7. By setting the following, it is not necessary to provide the separable insertion hole 9 in the dam plate 2 itself of the formwork panel 14, so it is not necessary to drill or allocate the separable insertion hole 9 when assembling the formwork. The mold plate 14 can be easily demolded from the hardened concrete without damaging the dam plate 2 with the end (screw part 16) of the round separator 7 when the mold is dismantled. Therefore, the number of diversions of the dam plate 2 can be improved, and the labor and material cost for constructing the concrete form can be significantly reduced.

9 to 14 exemplify the holding metal fittings 24 employed in this embodiment. As shown in FIG. 10, the holding metal fitting 24 includes a first holding plate 26 made of a thick metal plate having a first hooking piece 25 projecting to the back side at one side edge in the width direction and the other side edge in the width direction. A second holding plate 28, which is made of a thick metal plate and has a second hooking piece 27 protruding toward the back side and superposed on the back side of the first holding plate 26 so as to be slidable in the width direction, and the surface of the first holding plate 26. And an operating member 30 having a rotating plate (rotating body) 29 that overlaps in a rotatable and slidable manner.

The first and second hooking pieces 25, 27 are formed by bending the widthwise edges of the first and second holding plates 26, 28 toward the back surface in a U-shaped cross section. At both edges in the longitudinal direction of the first holding plate 26, the guide portions 31 of the second holding plate 28 are formed by bending the same edge portion to the back surface side, and the second holding plate 28 has its longitudinal direction. Both edges are aligned with the guide piece 31 and overlapped with the first holding plate 26 so as to be slidable in the width direction.

At the center of the first holding plate 26, the first holding plate 26 is provided.
A first elongated hole 32 that is long in the width direction of 26 is provided, and the first holding plate 26
A second elongated hole 33, which is long in the direction intersecting the longitudinal direction of the first elongated hole 32, is provided from the other side in the width direction of the. The operating member 30 relatively moves the holding members 26, 28 relative to the holding plates 26, 28 to move the holding plates 26, 28 relative to each other in the width direction thereof. By forming a notch in a C shape and bending the notch around the notch, the rotary plate 29 and a knob plate 34 orthogonal to the rotary plate 29 are provided. A pin hole 35 is provided at the center of the rotary plate 29, and a fulcrum pin 36 slidably inserted into the second elongated hole 33 is provided on the back surface of the rotary plate 29. The fulcrum pin 36 is connected to the first holding plate via the second elongated hole 33.
26 is engaged, but not the second holding plate 28.

The rotating plate 29 of the operating member 30 is pivotally attached to the holding plates 26, 28 via mounting pins 37 so as to be rotatable relative to each other. The mounting pin 37 is a stepped pin in which the base end portion 38 of the shaft portion has a large diameter and the tip end portion 39 has a small diameter, and is inserted into the pin hole 35 at the base end portion 38 and slides into the first elongated hole 32. The distal end portion 39 is fixed to a mounting hole 40 provided in the second holding plate 28 while being freely inserted.

As shown in FIG. 14, the first and second elongated holes
32 and 33 are arranged so that their center lines 41 and 42 are substantially orthogonal to each other, and the second slot 33 is the center line 41 of the first slot 32.
Than the one end in the longitudinal direction of the first holding plate 26 (lower side in FIG. 14)
Is formed to extend. Therefore, as shown in FIGS. 11 to 13, when the operating member 30 is relatively rotated with respect to both the sandwiching plates 26, 28, the fulcrum pin 36 causes one end in the longitudinal direction of the first sandwiching plate 26 in the second elongated hole 33. Side (the lower side of FIG. 13) moves toward the center side, and at the same time, the mounting pin 37 moves into the first elongated hole.
The second holding plate 28 to which the tip 39 of the mounting pin 37 is attached is moved from the center side in the width direction of the first holding plate 26 (right side in FIG. 13) toward the one end side within 32.
The first holding plate 26 is relatively moved to one end side in the width direction (left side in FIG. 13).

Further, in this embodiment, the return preventing means 43 is provided between the fulcrum pin 36 and the second elongated hole 33. That is, the center 44 of the fulcrum pin 36 when the fulcrum pin 36 moves to the side closest to the first elongated hole 32 in the second elongated hole 33 is represented by a black dot in FIG. The hole 33 extends to the upper side in FIG. 14 to such an extent that the center 44 of the fulcrum pin 36 at this time slightly exceeds the center line 41 of the first elongated hole 32 and holds the object between the two holding plates 26, 28. The fulcrum pin 36 is prevented from returning to the lower side in FIG.

Further, a plurality of engaging grooves 45 into which the fulcrum pins 36 are fitted are formed side by side on the edge of the second elongated hole 33 on the side opposite to the first elongated hole 32 in the width direction, whereby both holding plates 26, The fulcrum pin 36 can be locked in a stepwise manner while holding an object between 28. According to the holding metal fitting 24 having the above-described structure, the formwork panels adjacent to each other between the hooking pieces 25 and 27 of the holding plates 26 and 28 are provided.
Insert the latching ridge 10 at the end edge of 14 into the operating member 30
The form panel 14 can be joined very simply by simply rotating.

That is, in this embodiment, a hooking protrusion 10 having a hooked groove 13 is formed on the rear surface of the edge of the joint 5 of the formwork panel 14 (rim board 1). Since the hooking pieces 25, 27 of the holding metal fitting 24 are inserted into the hooked groove 13 of the strip 10 and the holding metal fitting 24 is tightened, the form panel 14 is joined.
The form panel 14 can be joined with almost one-touch, and the work required for assembling the form can be greatly reduced.

Further, in the past, the wooden stiles provided at the end of the barrier plate 2 were nailed to join the form panel 14, so that the form was damaged due to vibration during nailing and immaturity of the operator. Panel 14
Although there was often a step at the joining portion of the above, in the present embodiment, the form panel 14 can be joined flush with each other only by holding the latching protrusion 10 with the holding metal fitting 24. It is also possible to prevent the occurrence of stepped portions.

Incidentally, as shown in FIG.
24 shifts the relative positions of the first and second elongated holes 32, 33 with respect to the first sandwiching plate 26 by 90 degrees so that when the knob plate 34 of the operating member 30 is in the horizontal state, It is also possible to obtain a sandwiched state. Further, in this case, if the knob plate 34 in the sandwiched state is arranged between the reinforcing ribs 6 of the edge timber 1 joined to each other in a lined shape,
It is possible to prevent both the reinforcing ribs 6 from being displaced in a direction in which they approach each other, and thus it is possible to prevent the joint surface 12 of the edge pier 1 from opening during concrete pouring.

The material of the edge stile 1 is not limited to an aluminum alloy, and other hard plastics or steels can be used, but aluminum alloys and hard plastics are preferable for the weight saving of the form panel 14. Further, in the above embodiment, the mold panel 14 is used vertically to form the wall mold, but the mold panel 14 may be used horizontally, and the mold panel 14
Can also be used as a component of formwork for concrete foundations and slabs other than walls. Further, the edge shackles 1 are provided on the four edges of the barrier plate 2 to form a form panel 14, and the form panel 14 is formed.
It is also possible to arrange the 14 side by side in a block shape to form the mold surface.

If the holding metal fitting 24 has a hooked portion which can be inserted between the hooking pieces 25 and 27, it can be held, so that the construction elements other than the form panel 14 can be joined, or It can be widely used for joining plate materials and bar materials other than building elements.

[0032]

According to the invention described in claim 1, between the hooking pieces of both the sandwiching plates, the hooked portions (hooking protrusions) provided on the end edge portions of the form panel and the like adjacent to each other are provided. Insert the operating member 30
Since the formwork panels and the like can be joined simply by rotating, the work of joining the formwork panels and the like can be greatly simplified.

According to the second aspect of the present invention, since there is no deviation in the joint portion of the formwork panels when joining the formwork panels, it is possible to prevent the concrete from leaking at the time of placing the concrete and to harden the concrete. The striking surface afterwards can be made beautiful.

[Brief description of drawings]

FIG. 1 is a perspective view of an edge pier.

FIG. 2 is a perspective view of a formwork panel.

FIG. 3 is a perspective view of the joint structure of the formwork panel (rim board).

FIG. 4 is a cross-sectional view of the same plane.

FIG. 5 is a vertical sectional view of the same.

FIG. 6 is an explanatory view of a construction procedure of formwork assembly.

FIG. 7 is an explanatory view of a construction procedure of formwork assembly.

FIG. 8 is an explanatory view of a construction procedure of formwork assembly.

FIG. 9 is a perspective view of a clamp.

FIG. 10 is an exploded perspective view of a clamp.

FIG. 11 is a side view of the holding metal fitting, (a) showing before fastening and (b) showing after fastening.

FIG. 12 is a plan view of the holding metal fitting, (a) showing before tightening and (b) showing after tightening.

FIG. 13 is a rear view of the holding metal fittings, (a) showing before tightening and (b) showing after tightening.

FIG. 14 is a rear view of the first holding plate.

FIG. 15 is a front view showing a case where a holding metal fitting according to a modified example is attached to a rim beam.

[Explanation of symbols]

 10 Latching Protrusions 13 Hooked Grooves 14 Form Frame Panel 24 Clamping Metal Fittings 25 First Latching Pieces 26 First Clamping Plates 27 Second Hooking Pieces 28 Second Clamping Plates 29 Rotating Body (Rotating Plates) 30 Operating Member 32 First long hole 33 Second long hole 36 Support point pin 37 Mounting pin 39 Tip part

Claims (2)

[Claims] 1. A first holding plate (26) having a first hooking piece (25) protruding toward the back side at one widthwise side edge, and a second hooking piece (27) at the other widthwise side edge. And a second sandwiching plate (28) that is projected on the back surface side and is superimposed on the back surface of the first sandwiching plate (26) so as to be slidable in the width direction,
Rotating body superposed on the surface of the first holding plate (25) so that it can rotate and slide freely.
And an operating member (30) having (29), the first holding plate (2
A first elongated hole (32) long in the width direction is provided in the central portion of 6), and the first elongated hole (32) is located on the other side in the width direction of the first holding plate (26).
A second elongated hole (33) that is long in a direction intersecting with the rotary body (29) is slidably inserted into the first elongated hole (32), and a tip portion (39) is the second elongated hole (32). The holding plate (28) is pivotally attached to the holding plates (26) and (28) by means of mounting pins (37) fixed to the holding plate (28) so as to be rotatable relative to the holding plate (28). Two fulcrum pins (3
A holding metal fitting characterized in that 6) is provided in a protruding manner. 2. A formwork panel (14) in which a latching projection (10) having a latching groove (13) on the side opposite to the width direction is provided on the rear surface of the edge portion.
Are arranged side by side in a flush manner, and the two retaining ridges (10) (10) located at the joint of the form panel (14) are clamped in the retaining grooves (13) (13). 2. The joining structure of the form panel using the sandwiching metal fittings according to claim 1, wherein the retaining pieces (25) (27) of (1) are sandwiched by the sandwiching metal fittings (24) so as to be fitted to each other. .