JPS5853394Y2 - Weir plate tightening aid for concrete formwork - Google Patents

Description

[Detailed description of the invention] The present invention relates to a weir plate tightening aid that fits properly into a concrete formwork separator and has no risk of coming off. A locking protrusion and a cutting groove are provided inside the male thread through the non-threaded part, and the separator for concrete formwork is inserted between the weir plates so as to be in contact with the inner surface of the weir plate. In the auxiliary tool, a circular hole is bored in the center of the bowl-shaped main body to engage with the locking protrusion of the separator and for the male screw to pass through, and a through hole with a smaller diameter than the outer diameter of the male screw is provided in the center. This invention relates to a weir plate tightening aid for concrete formwork, characterized in that an elastic member such as urethane foam or sponge is fitted and fixed inside the bowl-shaped main body.

Next, the present invention will be explained based on the illustrated embodiment. The auxiliary tool 1 is composed of a main body 2 having a substantially bowl shape, and an elastic member 3 such as urethane foam or sponge that is fitted and fixed inside the main body 2. A circle 7L4 that fits around the separator 9 is bored in the center of the bottom of the main body 2.

The elastic member 3 is provided with a through hole 6 in the center so as to communicate with the circular hole 4 and whose diameter is smaller than the outer diameter of the thread of the male screw 10 of the separator 9. It is tightly fitted and fixed inside the main body 2 by adhesive 5 applied to the inner surface of the main body 2 except for the main body 2.

Furthermore, a plurality of notches 7 are formed radially around the through hole 6 in the elastic member 3 in order to facilitate and speedily work the bed on the separator 9.

In order to prevent the elastic member 3 fixed inside the bowl-shaped main body 2 from being pulled out, a claw portion 8 may be formed by bending around the outer end of the main body 2, as shown in FIG.

The separator 9 that connects the auxiliary tool 1 has male screws 10 and 10 screwed on both ends, and a locking protrusion 12 and A cutting groove 13 is provided adjacently.

Thus, the auxiliary tool 1 is fitted into the male screw 10 of the separator 9 from the circular hole 4, and the male screw 10 enters the through hole 6 while pressing the elastic member 3 backward.

At this time, the adhesive 5 is not applied to the inner surface around the circular hole 4 of the bowl-shaped main body 2, and the elastic member 3 is not attached to this part, which is easily deformed, and the operation of inserting the separator 9 can be performed more smoothly.

When the elastic member 3 reaches the non-threaded portion 11, the inner diameter of the through hole 6 becomes smaller than the outer diameter of the thread of the male screw 10 due to the restoration of the elastic member 3, and elastically presses the outer peripheral surface of the separator 9. Since the member 3 is made of a material with a large coefficient of friction, the auxiliary tool 1 can be reliably rested on the separator 9 and there is no risk of it slipping out.

Then, the auxiliary tool 1 is fitted into the non-threaded part 11 of the separator 9, the weir plate a is clamped and fixed between the auxiliary tool 1 and the tightening rod 14 that is screwed into the male thread 10 of the separator 9, and the weir plate a is further tightened. Attachment rod 1
4 Support the weir plate a by the horizontal and vertical beams b and C screwed together with nuts 16 through washers 15 at the outer ends, and pour concrete d between the weir plates 8 thus assembled. .

After the concrete d hardens, removing the weir plate a will cause the concrete to
) The outer end of the separator 9 protrudes from the d side, is cut by the cutting groove 13 by folding it down several times, and the auxiliary tool 1 is pulled out together with the outer end of the separator 9 while being locked to the locking protrusion 12. becomes.

The weir plate tightening aid for concrete formwork according to the present invention has the above-mentioned configuration, so it can be easily attached to the separator, and once attached, it does not easily come off, and does not cause any looseness, making concrete pouring work safer and easier. Not only can this be done accurately, but it also has extremely high practical effects, such as there is no possibility that concrete will enter the inside of the bowl-shaped body and harden during concrete pouring and obstruct the removal work of the auxiliary tool.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a front sectional view of the auxiliary device of the present invention, Fig. 2 is a right side view of the same, and Fig. 3 is a front sectional view showing another embodiment. FIG. 4 is a schematic front view showing the structure of the separator, and FIG. 5 is a sectional view of a main part showing the state in which the assisting tool of the present invention is used. 10...Auxiliary equipment, 2...Main body, 3...
...Elastic member, 4...Circular hole, 6...Through hole, 9...Separator, 10...Male thread, 11...・Non-threaded part, 12... Locking protrusion, 13... Cutting groove.

Claims (1)

[Scope of utility model registration request] A male screw is screwed on both outer ends, and a locking protrusion and a cutting groove are provided inside the male screw through the non-threaded part, and the weir plate is attached to a concrete formwork separator that is inserted between the weir plates. In the auxiliary tool that is fitted together so as to come into contact with the inner surface, a circular hole is bored in the center of the bowl-shaped main body to engage with the locking protrusion of the separator and into which the male screw is inserted, and the male screw is inserted in the center. A weir plate tightening aid for concrete formwork, characterized in that an elastic member such as urethane foam or sponge, which has a through hole with a diameter smaller than the outer diameter of the body, is fitted and fixed inside the bowl-shaped body.