JPS5940518Y2 - Concrete formwork connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connecting device for holding opposing concrete forms at an arbitrary distance.

Although various concrete formwork connecting devices have been proposed in the past, these types of devices have had various drawbacks.

That is, in the case of a type that is formed from a steel material such as a round bar and uses screws to adjust the spacing between concrete forms, it is expensive because of the screws that are formed, and although screws are suitable for fine adjustment, they have poor workability.

Although attempts have been made to use plates instead of round rods, plates have problems in terms of strength and are not suitable for adjusting the spacing.

The present invention was developed in order to eliminate the above-mentioned drawbacks of the conventional method.The purpose of this invention is to obtain sufficient strength even though the entire structure is made of plates such as steel plates, and also to allow fine spacing adjustment of concrete formwork. The purpose of the present invention is to provide a concrete formwork connecting device that is easy to perform and has high work efficiency.

According to the present invention, one end is provided with a connecting means such as a bolt hole for connecting to a concrete formwork, and the other end is provided with a number of projections and depressions over a certain length. It consists of a connecting plate and a connecting device in which a pair of locking bodies having engaging claws are rotatably pivoted on the flange portion of a groove-shaped body having a substantially U-shaped cross section, and each of the connecting devices The uneven portions of each of the connecting plates are inserted to a desired depth between the engaging claws and the bottom wall of the groove-shaped body, and each of the engaging claws of the connecting tool engages with the uneven parts of each connecting plate. Each of the connecting plates is fixed to a connecting tool.

Therefore, by inserting a pair of connecting plates into the connecting tool, rotating the locking body, and engaging the engaging claws of the locking body with the concave and convex portions of each connecting plate, each connecting plate can be attached to the connecting tool. It can be locked in a predetermined position.

Therefore, the pair of connectors can be set in the concrete formwork with a predetermined spacing between them.

Since the interval at which the connecting plates are set is determined by the interval between the concave and convex portions, the interval can be easily finely adjusted.

Since it is made of flat steel plate, it has sufficient strength.

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

As shown in FIG. 1 as a whole, the connecting device in which the present invention is implemented is roughly composed of a pair of connecting plates 1 and one connecting device 2, and one end of the connecting plate 1 is connected by a Q connecting means 3 such as a bolt. A fixed plate 4 is connected, and the fixed plate is further connected to a concrete formwork 5 by pins 6 or the like.

As shown in FIGS. 2 and 3, the connector 2 is composed of one groove-shaped body 20 and a pair of locking bodies 25.

The groove-shaped body 20 has a groove-shaped steel shape as a whole, and the flange portion 22.22 has four holes at a height h on the bottom wall 21, taking into account the thickness of the claws and connecting plates, which will be described later. A circular through hole 23 is formed.

Each locking body 25 cooperates with the groove-shaped body 20 to fix each connecting plate in a manner to be described later.
A shaft portion 26.26, which is rotatably inserted into the main body 28, is provided so as to project laterally from the main body 28.

A housing claw 27 is bent from the shaft portion to form a substantially right angle to the main body 28.

Then, with this claw 21 facing down, the groove-shaped body 2 shown in FIG.
The shaft portion 26.26 is inserted into the through hole 23 of 0, thereby forming the connector 2.

As shown in FIG. 4, the connecting plate 1 has, for example, bolt holes 3, 3 perforated at one end for connecting to the concrete formwork, and has holes perpendicular to the longitudinal direction extending over a certain thickness at the other end. A washboard-like uneven portion 10 having unevenness is formed.

The concrete formwork connecting device according to the present invention is constructed as described above, and when used, as shown in FIG. Rotate the locking body 25 so that the claw 27 is parallel to the bottom wall 21, and insert the other end on which the unevenness 10 is formed to an arbitrary depth between the claw and the bottom wall 21. However, when the locking body 25 is then rotated so that the pawl 27 lightly presses the uneven portion 1o, the uneven portion 10, that is, the connecting plate 1.1 is fixed to each other.

Therefore, the distance E between the other ends of the pair of connecting plates 1, 1 can be adjusted within the range of the interval between the uneven parts 1o, and as a result, the concrete formworks 5, 5 are held at a predetermined arbitrary interval, and the formwork Concrete can be poured inside.

As explained above, according to the present invention, the spacing between concrete forms can be finely adjusted as desired by the cooperative action of the uneven parts formed on the connecting plate and the claws of the connecting tool, and it can be assembled with one touch. The following effects can be obtained.

If the locking bodies 25 are provided in pairs facing each other as shown in FIG. .

When the connecting plate is used in an upright position, even if the connecting plate is thin, it can sufficiently withstand bending moments in the vertical direction, and a worker can work while standing on top of the connecting plate.

As can be seen from the above description, the concrete formwork connecting device according to the present invention is capable of various other modifications. It is also possible to provide

Of course, in this case, it is clear that the shape of the pawl of the locking body will also be matched to the irregularities.

It is clear that even if the shape of the concave and convex portions is simplified in this way, if the concave and convex portions are lightly pressed down with a nail, the stacked concave and convex portions will not cause any slippage and will be sufficiently usable.

As shown in FIG.
If 1' is formed, slippage between the groove-shaped body 20 and the connecting plate 1 is completely prevented, and a stronger connecting effect can be obtained.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Figure 1 shows the entire concrete formwork connecting device implementing the present invention and a part of the concrete formwork, and Figure 2 shows the connecting device. FIG. 3 is a perspective view of the locking body, and FIG. 4 is a diagram showing details of the connecting plate, where figure a is a plan view thereof, and figure b is a side view. , FIG. 5 is a perspective view showing another embodiment of the groove-shaped body. 1-... Connecting plate, 2... Connecting tool, 10...
...Irregular portion, 20 ... Groove-shaped body (constituting a connecting tool), 21 ... Bottom wall, 22 ...
...Nranji, 23...Through hole, 25...
・Locking body (constituting the connecting tool), shaft portion, 27...
·nail. 26...

Claims (5)

[Scope of utility model registration request] (1) One end is provided with connecting means such as bolt holes for connecting to the concrete formwork, and the other end is provided with a pair of connecting plates each having a number of unevenness formed over a certain length, and a cross-sectional It consists of a coupling device in which a pair of locking bodies having engagement claws are rotatably pivoted on the flange portion of a groove-shaped body having a substantially U-shape, and each of the engagement claws of the coupling device and the groove The concave and convex portions of each of the connecting plates are inserted to a desired depth between the bottom wall of the molded body, and each engaging claw of the connector engages with the concave and convex portions of each of the connecting plates, so that each of the connecting plates A connecting device for concrete formwork, characterized in that it is fixed to a connecting tool. (2) The concrete formwork connecting device according to claim 1, wherein the connecting plate has an uneven shape on both sides. (3) The connecting device for concrete formwork according to claim 1 or 2, wherein the bottom wall surface of the groove-shaped body of the connecting device has irregularities formed therein. (4) The concrete formwork according to any one of claims 1 to 3, in which the unevenness formed on the connecting plate or the connecting device is formed in the shape of a washboard at right angles to the longitudinal direction. coupling device. (5) The concrete formwork connecting device according to any one of claims 1 to 4, wherein two locking bodies are provided facing the groove-shaped flange portion.