JPS5912327Y2 - building mounts - Google Patents

Description

[Detailed explanation of the idea] This invention relates to the improvement of embedded devices for buildings.

Conventionally, this type of building recess has a metal internal thread body,
There is one that has nails integrally attached to a pedestal made of synthetic resin to support this and fix it to the formwork with nails.

However, in most of these, when the formwork is removed after concrete pouring and curing, the nails remain inside the concrete structure along with the pedestal, and the nails are headed nails attached to the pedestal with the tips of the nails protruding above the concrete surface. After demolding, the nails must be cut off with pliers, which is undesirable as it stains the concrete surface due to rust.

Therefore, in order to allow the nails to come out of the pedestal along with the formwork when the formwork is removed, it is possible to install headless nails on the pedestal that do not leave any nails on the concrete structure, but Workability is poor, as a nail puller cannot be used to remove it and processing is time consuming.

This idea was made to solve the above-mentioned drawbacks, by attaching a nail with an integral brim to the pedestal at the appropriate place on the body, the nail would come out from the pedestal inside the concrete frame together with the formwork during demolding, and the mold To provide a building embedding tool capable of locking a nail puller to a collar when being pulled out from a frame.

The structure of this invention will be explained below with reference to drawings of embodiments.

Figure 1 shows the first embodiment of this invention, with a flat collar 1a at the upper end.
A female screw body 1 made of metal having
A nail 4 having an integral flange 7 is installed at an appropriate position so that the lower surface of the flange 7 and the bottom surface of the pedestal 2 are flush with each other.

In the case of this first embodiment, the female screw body 1 is directly hammered from the upper end and nailed to the formwork, and then concrete is poured and cured.

Furthermore, when removing the mold as shown in FIG. 3, the nails 4 come out of the pedestal 2 together with the formwork F, so that no nails are left on the concrete frame S, so there is no fear of rust.

In addition, when removing nails from the formwork to reuse the formwork,
Hit the nail tip 6 with a hammer to lift the flange 7 above the mold surface, and as shown in Figure 4, insert the nail puller N into the gap between the bottom surface of the flange and the mold surface to remove the nail. Post-processing is easy.

FIG. 5 shows a second embodiment of this invention, in which the nails 4 of the first embodiment are implanted at appropriate intervals so that the lower surface of the collar 7 is above the bottom surface of the pedestal 12, and is different from the first embodiment. When the formwork was dismantled, the nails pulled out together with the formwork were already in a state where the collar 7 was floating a suitable distance above the formwork F surface as shown in Figure 4, so immediately
Nail puller N can be used.

FIG. 6 shows a third embodiment of this invention, in which the female threaded part 28 of the female threaded body 21 is buried so that the axis is parallel to the bottom surface of the pedestal in order to support the wall formwork. The separator is fixed to the formwork by nailing to connect the separator to support the wall formwork, and with regard to post-treatment of the nails 24, the same effects as in the first embodiment can be obtained.

In addition, in the third embodiment, as in the second embodiment, the collar 7 of the nail 4 is
It is also easily possible to plant the lower surface of the pedestal at an appropriate distance above the bottom surface of the pedestal.

Since this invention provides the above-mentioned construction and usage conditions, no nails remain in the concrete frame after demolding, and the nails can be easily removed from the formwork, making it easy to work, safe, and Since the formwork can be easily repurposed, it is economical and other effects.

In addition, when temporarily fixing the embedding device of the present invention on the formwork, the head of the embedding device is struck, but this force is also transmitted to the upper surface of the nail collar, so the temporary fixing effect is stable. are doing.

This has the effect of solving the problem that when a headless nail is used, there is a risk that the transmission will get into the pedestal because the information is transmitted only through the upper surface of the nail body diameter.

In particular, since the integral flange is provided at an appropriate position on the nail, nails can be mass-produced at low cost and in a constant quantity, thereby providing a stable product.

Incidentally, the same effect can be obtained even if a nail with a flange whose bottom surface is curved upward as shown in FIG. 7 is used.

Further, the means for planting the nail in the pedestal may be formed by inserting the nail when the pedestal is shaped, or by making a hole smaller than the diameter of the nail body in the pedestal and press-fitting the nail into the hole.

[Brief explanation of drawings]

Fig. 1 is a partial central vertical sectional view showing the first embodiment of this invention, Fig. 2 is a perspective view of the nail, and Figs. 3 and 4 are partial central longitudinal sectional views showing the second embodiment of this invention. 5 is a partial central vertical sectional view showing the second embodiment of this invention, FIG. 6 is a central longitudinal sectional view showing the third embodiment of this invention, and FIG. 7 is a partial central longitudinal sectional view showing the third embodiment of this invention. It is a perspective view showing an example. 1... Female screw body, 2... Joint resin pedestal, 4... Nail, F... Concrete formwork, S...・・Concrete frame, N・・・・
・Nail removal.

Claims (1)

[Scope of utility model registration request] A female screw body made of metal is attached to a pedestal made of resin, and a nail with an integral brim is placed on the underside of the seat of the pedestal at an appropriate position on the body.
A built-in device for buildings that consists of multiple installations.