JPS58153860A - Clamp apparatus of concrete mold frame - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a concrete formwork joint tightening device, which has been improved so that loose temporary fixing and firm final fixing can be easily performed by operating a lever.

Conventionally, U-clips, which are used to assemble and fix concrete forms used for pouring concrete for the fabric foundations of houses and walls of general buildings, to each other, are passed through the through holes of the frame plates on the periphery of the form and sandwich the frame plates between each other. A hook-like member has been used to attach the body. However, since this U-clip is an independent metal fitting, it must be prepared separately from the formwork when connecting the formwork, and there is a high risk of losing it.

At that ζ, the contact parts of the formwork frame plates are mutually penetrated and slid 8
A rod is attached to the back side of the formwork, and a U-shaped hook is attached to the eight rods.Nine clamping fittings have been developed and put into practical use.

However, since there is nothing to attach or remove this fastening fitting other than the eight rods and the hook, it cannot be done by operating a hammer, and as a result of the hammer hitting the fitting incorrectly, the frame plate is deformed and the hook is damaged. If the fasteners are loose, it can be installed simply by pushing them by hand, but since a standardized foundation, such as in a prefabricated house, is formed by a combination of formwork of fixed dimensions, slight deformation of the formwork and Even if the hook is loose, if it accumulates, a large dimensional error will occur at the end. First, in the case of conventional fixed-shaped hooks, due to their dimensional puffiness, even if they are new, the gap between the frame plates does not fit, and looseness may occur.
In particular, when used repeatedly, wear and deformation inevitably occurred, making it easy for looseness to occur.

In the tightening device of the present invention, the spacing between the hooks is set slightly wider than the frame plate spacing from the beginning, and a lever is provided on the eight rods, and the movement of the lever and cam allows for loose temporary fixing and firm final fixing. The feature is that it can be easily performed. Since loose temporary fixing is possible, there are advantages in that each formwork can be easily positioned, the position of the formwork can be partially corrected, and the inconvenience of moving even parts that do not need to be moved is eliminated.

Specific examples of the present invention are shown in the drawings as follows.

FIG. 1 is a perspective view of a formwork equipped with this device, FIG. 2 is a front view of the device in a temporarily tightened state, and FIG. 3 is a front view of the device in a fully tightened state.

The concrete formwork (1) has a frame board (2) surrounding the rectangular carving, and inside are vertical bars (3) and horizontal bars (4), which reinforce the panels (5) and form the concrete. It is designed to withstand internal pressure. The frame plate (2) of such a formwork (1) is provided with through holes (6) at appropriate intervals, and eight rods (7) that can freely rotate and slide are inserted through the through holes (6).
) is the spring/l/ (6) Support plate provided on the back (8)
It also penetrates and is supported by the through hole (9).

The support plate (8) has a special shape, as shown in Fig. 1, the through hole (9) is formed on the side surface which bulges out in an arc shape, and the center part has a diagonal cam groove aO toward the lower right. , 8 in this cam groove QO
A part of the lever (b) formed by bending the rear end of the rod (7) is fitted. In addition, a U-shaped hook (B) is attached to the 8th bar (7) to a ring (2) that is inserted through the 8th bar (7) so that it can rotate and slide further. The hooking piece α◆ is attached to the tip (toward) side of the 8 rod (7).

Figure 2 shows the temporarily tightened state, butting the frame plates (2) (2) together, aligning the positions of the through holes (6) (6), and tightening the lever part (B).
8 rods (
The tip (T) of 7) passes through both the through holes (6) (6), and the hook (6) can be positioned between the frame plates (2) (2), resulting in a temporarily tightened state.

As mentioned above, the spacing between the hooks (2) is set to be wider than the spacing between the frame plates, so all you have to do is turn the hooks by hand, and the temporary tightening is completed without coming off even when there is some play. After determining the mutual position of each formwork in this state, when the lever part (B) is rotated from top to bottom along the cam groove as shown in Figure 3, the hook (2) moves to the right. It is hooked on the hook piece (b) of the moving 8 sticks (7) and moves to the right, and the formwork on the left side (2)
is fully tightened to the formwork (2) on the right side in a tight state. This operation is also a manual rotation operation of the lever part (b), so no special tightening tool such as a hammer is required. Furthermore, the release is only done by lifting and moving the lever. If the final tightening is loosened,
Since the hook is in the temporarily tightened state shown in FIG. 2, no force is required to detach the hook from the frame plate. In the front, the cam groove (A) may not be a groove, but an exposed rhinestone with the arcuate plate on the right side omitted, and can be used without any practical problems. That is, the tightening device is characterized by temporary tightening and final tightening operations for attaching and detaching a loose hook by operating a cam and a lever.

Figures 4 to 6 show other embodiments of devices that perform the same functions as those in Figures 1 to 3, and although the shapes and mounting positions are different, the loose hooks can be attached and removed by operating a cam and a lever. It has a structure that allows In the figure, the solid line indicates when the product is stored when not in use, the one-dot chain line indicates when it is temporarily tightened, and the two-dot chain line indicates when it is fully tightened.

Figure 4 shows a cam part (end) installed on the mounting ring (end) of the hook (2), an angled bracket as the support plate (8), and a stopper (b) to prevent K from being pulled out of the 8 bar (7). indicates Marugame. If the tightening margin of the hook (6) is insufficient at the cam portion (to) of the ring (to), measures such as providing a swash plate cam to the ring may be taken.

Figure 5 shows that the 8 rod (7) is supported on the spring yv (5) by a U-shaped bracket (G), and the cam part (l) is attached to the hook α◆ fixed to the 8 rod (7). Also, 8 bars (7
) is supported by the U-shaped pocket without using the through hole (6) of the frame plate (2), so even if the frame plate is thin, it can be tightened.

In Figure 6, part of the lever (b) is made independent from the 8 rod (7),
This is an example in which a cam portion (6) is provided on the ring (6) that passes through the 8 rod (7) of the lever part Q force, and the bent portion (E) at the rear end of the 3 rod is structured as a cam receiver.

All of these operations are performed using a cam and a cam lever installed on the axis of the 8-bar (7), but a rotating cam is provided apart from the axis, and the 8-bar is operated by a lever that rotates in a plane parallel to the spring μ. It is also possible to consider a structure that attracts

As described above in detail, the concrete formwork tightening device of the present invention is equipped with a loose hook, a cam, and a lever, so that loose temporary fixing and firm final fixing can be performed with a single lever operation, making it easy to operate. With Ih6, it is easy to correct the positioning of each formwork, especially in the temporarily fixed state, and furthermore, the final tightening can be made continuously from the temporary tightening by simply operating a lever, which is an excellent function and effect never seen before. Furthermore, since the lever can be arbitrarily provided at a position away from the hook, an effect that can be easily understood can be obtained even when assembling the formwork for large corners and the like.

In addition, since a hammer is not used, there is no damage to the hook or frame plate, and the product can be used for a long period of time without any dimensional deviation.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the formwork equipped with this device, Fig. 2 is a front view of the device in a temporary tightening state, and Fig. 3 is a front view of the same showing the final tightening state. . 4 to 6 are front views showing other embodiments. (1) Concrete formwork (2) Frame plate (5) Spring μ
(6) Through hole (7) 8 rods (
8) Support plate (9) Through hole Cam groove (B) Part of V bar (2) Hook part Ring α◆ When hooking piece a Cam part αη Stopper (to) U-shaped hooket (6) Insertion ring (E) Applicant above the bending section OEM Industries Co., Ltd. Agent Patent attorney Hirozo Mori')

Claims (1)

[Claims] 1. In a device in which a core rod KU-shaped hook is provided near the peripheral frame plate of a formwork and can freely rotate and slide through the frame plate, two frame plates that butt the interval between the U-shaped hooks The distance is set slightly wider than the spacing, and a V-par that is approximately perpendicular to the axis of the 8-bar axis and a ninth cam that tightens the frame plate by drawing the hook by the rotation of the V-bar are placed near the 3rd bar. A concrete formwork bonding device characterized by the following: