JPS6311259Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a connection that allows concrete forms, etc. that are arranged flush and adjacent to each other to be easily connected by using engagement holes provided in both concrete forms, etc. It provides ingredients.

Hereinafter, it will be explained based on the attached illustrative diagrams that the connector for concrete formwork etc. according to the present invention is
As shown in the figure, a pair of tightening rods 1 and 2 are connected by screwing into screw shaft portions 1a and 2a of mutually reverse screws formed on the inner ends of both tightening rods 1 and 2. The hook portions 1b, 2b are formed by bending the outer ends of the tightening rods 1, 2 diagonally inward so that the tips are closer to each other than at right angles. It is what it is.

Next, a method of constructing a cloth foundation using the above-mentioned connector 4 will be explained based on FIGS. The formwork 5 formed by the method (including the above) is arranged in parallel on a concrete base 6 built at a certain depth underground so as to sandwich the cloth foundation construction space from both sides, and the joint position of the formwork 5 adjacent in the length direction is As shown in FIG. 3, spacing holders 8 and 9 made of steel strips having formwork fitting portions 7 formed at both ends are fitted to the top and bottom sides of the formwork 5, respectively, so as to keep the formwork 5 facing away from each other. Through-holes 10 are formed in advance at fixed positions at both ends of the formwork 5 to maintain a constant interval between the formworks 5 and to maintain the longitudinally adjacent formworks 5 flush with each other. Then, as shown in FIG. 5, the outer end hook portions 1b and 2b of both tightening rods 1 and 2 of the connecting tool 4 are fitted,
In this state, by rotating the female screw body 3 and drawing both the clamping rods 1 and 2 toward the female screw body 3, both formworks 5 that are flush adjacent to each other are brought into pressure contact with each other by both the clamping rods 1 and 2. Join.

Next, the excavated space outside the formwork 5 is backfilled with earth and sand 11, and concrete 12 is placed between the formworks 5. Of course, anchor bolts will be buried in the same way as before. As the concrete 12 hardens and cures, a cloth foundation with the formwork 5 integrally joined is completed, but the upper spacer 8 can be removed as necessary, and in some cases, the formwork 5 may be A decorative mortar layer can also be formed on the outer surface of the formwork 5 so that the connectors 4 protruding outward are buried.

Incidentally, as shown in FIG.
The inner surface of the side where b and 2b come into contact is the hook part 1
It can be tilted so as to make surface contact with b and 2b. In this case, the through hole 10 may be formed in a conical shape as shown in the figure, or a through hole with a constant inner diameter may be formed diagonally.

The connector 4 was used on the outside of the formwork 5, but the formwork 5
It is also possible to bury the connecting device 4 by using the connecting device 4 so as to be located in the concrete casting space between the two.

As shown in FIG. 6, the through-hole 10 provided in the formwork 5 may be a through-hole with a constant inner diameter perpendicular to the formwork surface. It is also possible to provide the protrusions 5a and the grooves 5b in the vertical direction, which fit into each other.

The connecting device for concrete formwork, etc. of the present invention can be used as described above, and the hook portions at both ends of the connecting device are inserted into the holes provided near the opposing edges of the formworks that are flush with each other. Both formworks can be drawn together and joined together simply by rotating the female thread in the middle when they are fitted, but this is especially true when the hooks of both clamping rods are bent diagonally inward. Therefore, even if a normal through hole 10 as shown in FIG. When the two clamping rods are rotated and tightened so as to be drawn toward each other, there is no fear that the ends of the clamping rods will come off from the holes in the formwork, and the two formworks can be reliably and firmly fastened together.

In the examples, the connecting tool of the present invention was used to connect concrete formwork, but it can also be used to connect various types of concrete formwork made of general wooden or metal plates, or a combination of both. It is something.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the coupling device of the present invention, Fig. 2 is a longitudinal sectional front view showing a fabric foundation structure using the coupling device of the present invention, and Fig. 3 is a perspective view of a spacing retainer used in the same structure. FIG. 4 is a side view of the same structure, FIG. 5 is a cross-sectional plan view of essential parts of the same structure, and FIG. 6 is a cross-sectional plan view showing a modified example. 1, 2...Tightening rod, 1a, 2a...Screw shaft portion, 1b, 2b...Hook portion, 3...Female screw body,
4... Connector of the present invention, 5... Concrete formwork,
8, 9... Spacing holder, 10... Through hole, 12...
…concrete.

Claims (1)

[Scope of utility model registration request] It consists of a pair of tightening rods, and a female screw body that connects both tightening rods by screwing into the screw shafts of mutually reverse screws formed on the inner ends of both tightening rods. A connector for concrete forms, etc., which is formed by bending diagonally inward so that the tips are closer to each other than at right angles to form a hook.