JPH061928Y2 - Form frame insert holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is intended to attach and hold a hanging bolt mounting insert, which is to be previously embedded in concrete on a floor forming formwork, in a predetermined state on the formwork. Of the insert holder.

(Problems to be solved by conventional techniques and devices) When constructing a concrete building, the ceiling of each floor is covered with a finishing material on the ceiling frame that is hung from the lower surface of the floor of the upper floor via suspension bolts. This floor is made by concrete casting on a deck, for example, a deck plate made of an iron plate with a corrugated cross section stretched between the beams. It is necessary to vertically hold the female-threaded cylindrical insert for mounting.

In this case, the insert holder conventionally used is formed of a short pipe made of a hard vinyl chloride having a large number of cuts at the tip and a brim near the tip as shown by reference numeral 1'in FIG. As shown in FIG. 5, after inserting the tip end into the holder mounting hole 7'of the deck plate 6 ', a female threaded cylindrical insert 8'is press-fitted from above to widen the notch,
The insert 8'is held vertically, but the expanded tip portion is simply bulging in an arc shape as shown in the figure, so that it is easy to come out upward, and the insert 8'is held sufficiently. It was difficult to do so, and when it was pushed to one side by the concrete to be driven in, there was an inconvenience that it would slip out onto the deck plate together with the insert.

(Means for Solving the Problem) That is, the above-mentioned conventional insert holder is made of a hard resin, and the tip portion is deformed into a bulging state through an insert that is press-fitted to press-contact the inner surface of the holder mounting hole. However, this deformation is formed at the same time as the press-fitting, and when the press-fitting is performed in a slightly inclined state, the deformation is also biased to one side, and the state becomes easier to escape.

On the other hand, according to this invention, a locking portion for preventing slip-out is made in advance at the tip, and the whole is made of a soft synthetic resin to prevent uneven deformation and the like.

(Embodiment of the Invention) An embodiment of the invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes an insert holder of the invention, and FIGS.
As shown in the figure, the whole is made into a short tubular shape made of one-piece soft polyethylene resin, has a brim 2 near one end, and is squeezed toward one end between the brim 2 and the one end, and further In addition to forming the locking step portion 3 whose outer diameter is expanded in a blister shape and whose outer diameter is substantially equal to the original thickness of the short tube,
Cut from one end to the brim 2 and make cuts 4 ... Several divided pieces 5 (6 in the figure) ..
・ It is formed in.

(Operation and effect) The present invention has the above structure, in which the narrowed portion is inserted into the holder mounting hole of the deck plate with the one end facing downward, and then the insert is fitted from above, and then the deck plate is mounted. The concrete is driven in and the insert is embedded in the concrete together with this retainer.
As shown in the figure, after inserting into the holder attachment hole 7 of the deck plate 6 and then inserting the insert 8, the narrowed portion is transformed into the same tubular shape as the upper part and the holder attachment is performed by the locking step portion 3. There is no possibility of escape from the hole 7, the narrowed portion is deformed into a uniform straight tube, and the locking step portion 3 is attached to the lower end in a brim shape, so that the insert 8 is an insert holder. It can be held vertically together with 1, and is extremely efficient. Of course, the formwork to be attached is not limited to the deck plate, and can also be used for a normal formwork.

[Brief description of drawings]

1 is a front view of the present invention, FIG. 2 is a bottom view of the same, FIG. 3 is a longitudinal sectional view showing a mounting state, and FIGS. 4 and 5 are front views of a conventional holder and after mounting. FIG. Reference numeral 1 is an insert holder, 2 is a collar, 3 is a locking step, 4 is a notch, 5 is a divided piece, 6 is a deck plate, and 8 is an insert.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A short tube made of an integral soft synthetic resin and having a brim 2 near its one end is squeezed at one end thereof, and the tip of the squeezed portion is bulged into a worm-like shape so that the outside diameter of the short tube originally An insert holder for a formwork, in which a locking stepped portion 3 having a thickness substantially equal to that of the above is provided, and a portion extending from the one end to the brim 2 is formed into several cut pieces 5.