JPS5922185Y2 - Connecting device for flat fasteners for concrete formwork - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fastener connection device for holding opposing concrete forms at a constant distance.

Conventionally, when making concrete walls, etc., the concrete frame is opposed to the concrete frame and a fixed distance is maintained using fasteners, concrete is poured between them, and the formwork is removed after the concrete has hardened. Due to the large thickness in both directions, it was difficult for the concrete to pass under the fasteners, resulting in the formation of cavities.

This thickness has been increased for reasons such as withstanding the load of a worker riding on the stopper.

This invention was made to eliminate the above-mentioned conventional drawbacks,
To provide a connecting device for a concrete formwork stopper, which uses two vertical flat connecting plates having a relatively thin thickness and connects these connecting plates with a cover, pins, etc.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a flat plate-shaped fastener for holding concrete formwork 2 at regular intervals, and has two connecting plates 3 and a fixing plate 4.

The connecting plate 3 is made of a flat steel plate and has a horizontal thickness smaller than its vertical height, ie it is vertically arranged and resists vertical bending moments.

An appropriate number of holes 5 are provided at the connecting end of the vertical connecting plate 3, and a connecting cover 7 having a substantially inverted U shape and having holes 6 covers the connecting end from above. By inserting pins 8 and the like into the holes 5 and 6, the connecting plates 3 and 3 are connected to each other, and by appropriately selecting the holes 5, the overall length of the connecting plates 3 and 3 can be adjusted and changed.

A fixing plate 9 is connected to the other end of the connecting plate 3.

The fixed plate 9 has a horizontal piece 10 and a vertical piece 11 formed by twisting 90 degrees integrally with the horizontal piece 10, and the lower end of the vertical piece 11 is bent at a right angle to receive the lower surface of the connecting plate 3.

By inserting a pin 13 (FIG. 1) into a hole 12 in the vertical piece 11 and a hole (not shown) in the connecting plate 3, the connecting plate 3
A fixing plate 9 is connected to the other end.

The fixing plate 9 is fixed to the concrete formwork 2 by inserting pins 15 (FIG. 1) into holes 14 in the horizontal piece 10 and holes (not shown) in the formwork 2.

Thus, the fixture 1 according to the present invention is placed between the opposing concrete formworks 2, and by adjusting the length of the connecting plate 3, the formworks are held at a predetermined interval, and the concrete is held between the formworks 3. You can type.

The present invention is constructed as described above, and since the thickness of the connecting plate is thinner than that of the conventional one, the concrete is well-circulated under the connecting plate and there is no possibility of formation of cavities.

Also, since the connecting plate is vertical despite being relatively thin, it can withstand vertical bending moments and allows the work implement to rest on it.

The connecting ends of the connecting plates are covered with covers that have an inverted U-shaped cross section and are connected by inserting pins, which not only simplifies the assembly process, but also ensures that the connecting plates are connected reliably. , and serves as a reinforcement against the bending moment acting on the connecting end, so that the shearing force acting on the pin 5 can be alleviated.

Therefore, for example, when a worker stands on the structure, the structure will not bend due to the load from above, making the work safer.

Further, by providing this connecting cover 7, the number of pins 8 can be reduced, and in some cases, only one pin is sufficient.

As shown in FIG. 5, the lengths of the holes 5 in the connecting plate 3 can be varied by varying the distance a between the holes 5 on one side and the distance between the holes 5 on the other side. , in which case two may be used in the vertical direction.

[Brief explanation of the drawing]

Figure 1 is a diagram showing an embodiment of a connecting device for flat fasteners for concrete formwork according to the present invention, and Figure 2 is A of Figure 1.
-A sectional view, FIG. 3 is a BB sectional view of FIG. 1, FIG. 4 is a perspective view of the fixed plate, and FIG. 5 is a diagram showing a modification of the connecting plate. 1... Fastener, 2... Concrete formwork, 3... Connecting plate, 5, 6... Hole,
7...Cover, 8...Pin.

Claims (1)

[Scope of utility model registration request] Two panels made of flat steel plates were placed between the opposing concrete formworks.
In a fastener provided with two vertical connecting plates, a hole is provided at the connecting end of the connecting plate, and a cover having an inverted U-shaped cross section is covered, and a pin is inserted into the hole in the connecting plate and the hole in the cover. 1. A connecting device for a flat fastener for concrete formwork, characterized in that two connecting plates are connected so as to be adjustable in length.