JPH0347075Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> This invention is a concrete formwork that is assembled to the side of the concrete pouring position to form a concrete pouring surface, mainly a wooden concrete formwork (concrete panel This article relates to a joint fitting that is a part of the formwork support fitting used when assembling the mold.

<Prior art> As shown in Fig. 12 of the attached drawings, this kind of concrete form support metal fittings have conventionally been used to support metal forms through holes formed in the form surface of concrete form A.
A short screw member I so as to protrude inside and outside the formwork A.
, screw the embedded concrete C on the concrete casting surface side of the formwork A (left side in the figure), screw and connect one end of (registered trademark) F to the outside, and screw the embedded concrete C on the free end side of the embedded concrete C. One end of the round bar type separator B is screwed to C ₁ , and the formwork A is connected to the form tie F side.
A vertical flap material D and a horizontal flap material E for assembling were arranged and connected by tightening with a nut H through a washer G.

<Problems to be solved by the invention> However, with such conventional concrete formwork supporting tools and supporting methods, the embedded concrete
The posture of the round bar-shaped separator B which is screwed and connected to the free end side _C1 of the mold is always perpendicular to the surface of the formwork A, that is, the same posture as the axis of the embedded conduit C, and it can be used by changing the angle. It was inconvenient that I couldn't do it. Further, if the angle is forcibly changed, there is a drawback that the clamping surface of the formwork A, which is clamped between the embedded contact C and the form tie F, is destroyed.

Therefore, if an angle is required, either select and use a special recessed cap (not shown) that is bent into a shape corresponding to the angle, or screw a short round bar into the recessed cap C described above. A construction method was used in which one end of a round bar (reinforcing bar) or the round bar type separator B was welded to the tip thereof at a required angle. However, when using a bent special embedded concrete structure, a large number of various angled special embedded concretes having angles corresponding to the inclination angle of the concrete structure, that is, the inclination posture of the assembly form A are required, and There is a drawback that these materials must be selected and used, and the welding method not only requires specialized skills and various welding tools for welding itself, but is also labor intensive and has extremely low work efficiency. First, since point welding is performed where the round bars intersect at an angle, the required strength cannot be obtained unless sufficient welding time and labor are applied.

The present invention solves all of these conventional drawbacks, and can be used in both directions perpendicular to the formwork surface and at an angle, and even when the angle is large or small.
To provide a joint fitting with a built-in contact, which can be made of only one type and which can use a plate-like separator with low production cost instead of a round bar-type separator.

<Means for solving the problems> The structure of the present invention to achieve the above purpose is as follows:
To explain using FIGS. 1 and 2 corresponding to the embodiment, the structure is as follows: a metal member 1 having flat surfaces 1a on both sides in the vertical direction; a synthetic resin member 2 fixed to and covering the outer periphery of the metal member 1; a threaded hole 3 communicating with the metal member 1 from the free end side 2b of the synthetic resin member 2;
A connecting wall portion 5a on one end side of the connecting shaft 4 inserted into the through hole 1b formed in the flat surface 1a of the metal member 1.
The free end side of the joint table 5 has a U-shaped cross section, and a connecting pin hole for the connecting bar 6 is formed in the side wall portion 5b forming the U-shaped portion. 5c is formed.

<Function> The joint fitting with embedded connector according to the present invention has the following functions:
Since it has the above structure, when using it, the joint base 5 can be freely changed in the extension direction or the required angle in the vertical direction with respect to the metal member 1 with the connection shaft 4 as the center. It can be used to further change the angle of the connecting shaft 4, that is, the metal member 1
By changing the flat surface 1a from the vertical direction to the inclined direction, the joint table 5 can be changed not only in the vertical direction but also in the inclined vertical direction, and furthermore, the connecting shaft 4 can be oriented in the vertical direction. Therefore, the joint stand 5 can be used horizontally and laterally, and the connecting bar 6 can be connected at any necessary angle with respect to the formwork surface.

<Example> An example of the present invention will be described based on the drawings.

The structure shown in FIGS. 1 and 2 shows an embodiment of the present invention, in which a metal member 1 in the shape of a short hexagonal rod is shown.
A cylindrical synthetic resin member 2 is fixed to and coated on the outer periphery of the metal member 1 biased to one side (left side in the figure) of the metal member 1, and a cylindrical synthetic resin member 2 is attached to the metal member 1. On the other hand, the free end side 2b of the synthetic resin member 2
Pivot foot 7 (described later) communicating from (left side in the figure)
A through hole 1 in which a screw hole 3 for screw fitting is formed and formed in opposing flat surfaces 1a, 1a of the metal member 1;
It consists of a joint stand 5 in which a connecting wall part 5a on one end side is swingably supported on a connecting shaft 4 inserted through a connecting shaft 4, and the joint stand 5 has a U-shaped cross section at its free end side, and It has a structure in which a plurality of connecting pin holes 5c for connecting separately formed connecting bars 6 are formed in opposing side wall portions 5b forming the part. Further, a flange portion 2c that protrudes in an annular shape for preventing falling off from the poured concrete 10 is integrally formed on the outer peripheral portion of the base end side 2a of the covering synthetic resin member 2. It is.

Next, an example of the use of a joint fitting having such a structure will be explained using FIGS. 3 to 7. First, as shown in FIG. 3, from the free end 2b of the synthetic resin member 2 to the threaded hole 3 of the metal member 1, threaded portions are formed on both sides of the short axis, and the central portion is flattened for engagement with a swivel. One end of the pivot foot 7 formed with the ), one end of which protrudes outward (left side), a form tie F is screwed into the protrusion, and a large number of pins are inserted into the pin hole 5c formed in the side wall 5b of the joint base 5 along the longitudinal direction. A connecting bar 6 made of flat metal and having a U-shaped cross section and having a hole 6c formed therein is connected by a connecting pin 8. As shown in FIG. 5, the other end of the connecting bar 6 is connected to the upper end of a concrete anchor 11, which is inserted into the poured concrete 10 and embedded therein. Further, in the form tie F, at the same time as described in FIG.
Tighten the nuts H through the holes to form the assembled formwork K. The assembled formworks K and K thus constructed are formed to face each other on both sides of the concrete pouring position, and concrete is poured into the space J and allowed to cure and harden. After the poured concrete has hardened, the formworks K and K are dismantled and removed, and as shown in Figures 6 and 7, the shaft foot 7 is removed, and a synthetic resin hole plug 1 is inserted into the removed hole.
2 is driven in with a hammer 13 or the like to close the screw hole 3 and prevent the metal member 1 from rusting. Metal member 1, synthetic resin member 2, joint stand 5, etc. are made of concrete 1
It remains buried within 0.

8 to 11 show different embodiments, and FIG. 8 shows a structure in which the distance between the side wall portions 5b of the U-shaped portion of the joint base 5 is narrow, for example, The pin hole 6c forming part shows a structure in which two plates are connected to each other, and in FIG. 9, the metal member 1 is plate-shaped, and the joint base 5 is also set to have a spacing width that matches this. The structure has a connecting wall part 5a and a side wall part 5b, and connects a connecting bar 6 having an L-shaped cross section, for example. Needless to say, by adjusting the spacing between the side wall portions 5b in FIGS. 8 and 9, we installed two L-shaped connecting bars on the joint base in Figure 8 and two on the joint base in Figure 9. It goes without saying that mating connecting bars may be connected, and that both of these connecting bars may be arbitrarily connected and used.

FIG. 10 shows a screw hole 3 extending over the entire length of the metal member 1.
FIG. 11 shows a structure in which the synthetic resin member has a truncated cone shape with a large diameter on the proximal end 2a and a small diameter on the distal end 2b. In the case of such a truncated conical shape, it will not come out of the hardened concrete 10 even if the flange portion 2c is not formed on the outer circumferential portion of the base end side 2a.

Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structure of these embodiments, and the present invention is not necessarily limited to the structure of these embodiments. However, it can be implemented with appropriate modifications within the scope of achieving the effects described below.

<Effects of the invention> As is already clear from the above explanation, the invention has the following effects:
When using it, the joint base can be freely changed to the required angle in the extension direction and vertical direction with the connection shaft as the center relative to the metal member.
In addition, by making the angle of the connecting shaft, that is, the flat surface of the metal member, in an inclined direction different from the vertical direction, the joint table can be changed not only in the vertical direction but also in the diagonal direction. By orienting the joint table vertically, the joint table can be used by changing the angle laterally, and the connecting bar can be connected to virtually any angle required relative to the formwork surface. This remarkable effect can be easily and fully achieved with only one type of product, and therefore, it is suitable for mass production and can be provided to the market at a low price.

[Brief explanation of the drawing]

1 and 2 are a side view and a plan view showing an embodiment of the present invention, FIGS. 3 to 7 are chronological explanatory diagrams of the use of the embodiment, and FIGS.
The figure is a partially cutaway side view of the main part before concrete pouring, Figure 5 is an overall side view of the framework, and Figures 6 and 7 are a side view and partially cutaway side view of the main part after concrete pouring. 8 to 11 are views showing different embodiments, and FIGS. 8 and 9 are perspective views of the whole,
10 and 11 are a cross-sectional plan view and a partially cutaway side view showing the metal member and resin member portion, and FIG. 12 is a side view of the main assembly parts showing the conventional structure. In the figure, 1 is a metal member, 2 is a synthetic resin member, 3 is a screw hole, 4 is a connecting shaft, 5 is a joint stand, 6 is a connecting bar, 1a is a flat surface, 1b is a through hole, and 2b is a free end. 5a is a connecting wall, 5b is a side wall portion, and 5c is a pin hole.

Claims (1)

[Claims for Utility Model Registration] A metal member 1 having flat surfaces 1a on both sides in the vertical direction, and a synthetic resin fixed to and covering the outer periphery of the metal member 1 on one side of the metal member 1. A member 2, a threaded hole 3 communicating with the metal member 1 from the free end 2b of the synthetic resin member 2, and a connecting shaft 4 inserted into a through hole 1b formed in the flat surface 1a of the metal member 1. Connecting wall part 5 on one end side
The free end side of the joint stand 5 has a U-shaped cross section, and a connecting pin of the connecting bar 6 is attached to a side wall portion 5b forming the U-shaped portion. A joint fitting with a built-in connector having a shape in which a hole 5c is formed. A joint fitting with an embedded connector according to claim 1, wherein the metal member 1 is in the shape of a hexagonal bar. A joint fitting with an embedded connector according to claim 1, wherein the metal member 1 is in the form of a flat plate. A joint fitting with an embedded connector according to claim 1, wherein the metal member 1 is in the shape of a hexagonal bar and has a threaded hole 3 formed therethrough over its entire length. A joint fitting with an embedded connector according to claim 1, wherein the synthetic resin member 2 is cylindrical. A joint fitting with an embedded connector according to claim 1, wherein the synthetic resin member 2 has a truncated cone shape with a large diameter on the proximal end 2a and a small diameter on the distal end 2b. A joint fitting with an embedded connector according to claim 1, wherein the synthetic resin member 2 has a protruding flange portion 2c on the outer peripheral portion of the base end side 2a. A joint fitting with an embedded connector according to claim 1, wherein one pin hole 5c is formed in the side wall 5b of the joint stand 5. The joint fitting with an embedded connector according to claim 1, wherein a plurality of pin holes 5c are formed in the side wall portion 5b of the joint stand 5.