JPS582807Y2 - ceiling insert - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a ceiling insert.

Generally, this type of insert is used by fixing a support body, which has a metal core fitted inside a synthetic resin cylinder, on the formwork surface. This causes the inconvenience of tripping over the fixed insert and causing the metal core to be pulled out of the support and lost. When screwing bolts together, it often happens that the metal core rotates together with the suspension bolt, making it difficult to reliably screw the suspension bolt onto the core. Because it is molded from a synthetic resin material, if the support made of synthetic resin burns during a fire, looseness will occur between the metal core and the surrounding concrete, causing the suspended objects to There was a fear that he might fall.

The present invention was devised to eliminate these drawbacks and inconveniences, and by forming a recess on the lower surface of the flange of the core metal to accommodate the head of the fixing nail, the nail can be hung from the screw hole of the core metal. When the bolt is screwed together, the core metal can be prevented from rotating together with the suspension bolt, and the suspension bolt can be reliably screwed into the core metal. By installing a ring-shaped pull-out prevention guide ring through the insert, even if a worker walking on the formwork during insert construction trips on the insert or inadvertently kicks the insert, the metal It is possible to prevent the core metal from coming out from the support, and even if the synthetic resin support is burned in the concrete in the event of a fire, the concrete that has solidified will flow into the gap between the spoke-shaped connecting pieces. The present invention aims to provide a ceiling insert that can prevent a metal core from rattling and prevent hanging objects from falling.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.
Figure 1 is a front view of the ceiling insert according to the present invention, Figure 2 is a front view of the ceiling insert according to the present invention;
The figure is a side view, and FIG. 3 is a plan view of FIG. 1, in which 1 is a metal core, 2 is a support made of synthetic resin, and 3 is a fixing nail.

As shown in FIGS. 4 and 5, the core metal 1 has a disk-shaped flange portion 5 integrally formed on the upper end of a cylindrical core body 4, and extends from the lower end of the core metal body 4 along its axis. A screw hole 6 is screwed therein, and recesses 7, 7 are formed in the lower surface of the flange portion 5 of this core metal 1, as shown in FIG. 7, in which the heads of fixing nails 3, 3 are accommodated.

On the other hand, the synthetic resin support 2 is the main body 4 of the core bar 1.
A substantially cross-shaped fixing seat 10 is integrally formed at the lower part of the support tube 9, which has a cylindrical insertion hole 8 in the center into which the part is inserted, and fixing nails are provided at two opposing positions on the outside of the support tube 9. 3
Support part 11.11 for inserting and supporting the iron nail 3
are formed integrally with the upper part of the support cylinder 9 through a plurality of spoke-shaped connecting pieces 12... whose upper surface is in the shape of a diagonal plane with the lower surface of the flange part 5, and which is connected to the outside of the flange part 5. A ring-shaped guide ring 13 for preventing removal, which is slightly larger than the diameter, is integrally provided.

When using the ceiling insert constructed in this way, as shown in FIG. The main body 4 part of the metal core 1 is fitted into the insertion hole 8, and is fixed to the formwork 14 by being hammered onto the formwork 14, and concrete 15 is poured on it and cured.

Furthermore, after the formwork 14 is dismantled, a hanging bolt 16 is screwed into the screw hole 6 of the core metal through the hole 8 of the support tube 9, thereby suspending a suspended object such as a ceiling or piping.

In this way, the present invention has a flange portion 5 integrally formed on the upper end of the cylindrical core body 4, and a screw hole 6 is screwed from the lower end of the core body 4 along its axis. A fixing seat 10 is supported at the lower part of a support tube 9 having a fitting hole 8 in the center into which the core metal 1 and the main body 4 of the core metal 1 are inserted, and a fixing nail 3 is supported on the outside of the support tube 9. Support part 1 for
1, and a synthetic resin support 2 integrally formed with the core metal 1, and a recess I for storing the head of the fixing nail 3 is formed on the lower surface of the flange portion 5 of the core metal 1. When screwing the suspension bolt 16 into the screw hole 6 of the screw hole 6, it is possible to prevent the core metal 1 from rotating together with the suspension bolt 16, and as a result, the suspension bolt 16 can be reliably screwed into the core metal 1. There is an effect that can be done.

Further, the upper surface of the support tube 9 of the synthetic resin support body 2 is provided with a plurality of spoke-shaped connecting pieces 12..., the upper surface of which is in a round shape with the lower surface of the flange portion 5, and the flange portion 5
Since the guide ring 13 for preventing removal is installed in a continuous manner, which is slightly larger than the outside diameter of the insert, a worker walking on the formwork 14 during insert construction may trip over this insert or inadvertently kick the insert. Even if the metal core bar 1 is pulled out from the support body 2 by the guide ring 15, even if the synthetic resin support body 2 burns in the concrete in the event of a fire, the above-mentioned The metal core 1 is completely surrounded by the solidified concrete 15 that flows in from the gap between the spoke-like connecting pieces 12 and 12, preventing it from rattling and also preventing the suspended object from falling. effective.

[Brief explanation of drawings]

Figure 1 is a front view of the ceiling insert according to the present invention, Figure 2 is a front view of the ceiling insert according to the present invention;
The figure is a side view, FIG. 3 is a plan view of FIG. 1, FIG. 4 is a sectional view taken along line A-A in FIG. 3, and FIG. 5 is a sectional view taken along line B-B in FIG. 3. , FIG. 6 is a sectional view taken along the line CC in FIG. 4, and FIG. 7 is a drawing showing the metal core 1 viewed from below. 1 is a metal core, 2 is a synthetic resin support, 3 is a fixed nail,
4 is a core metal body, 5 is a flange portion, 6 is a screw hole, 7 is a recess, 8 is a fitting L, 9 is a support tube, 10 is a fixed seat, 11 is a support portion, 12 is a spoke-like connecting piece, 13 is a guide ring.

Claims (1)

[Scope of utility model registration request] A metal core 1 has a flange portion 5 integrally formed on the upper end of a cylindrical core body 4, and a screw hole 6 is screwed from the lower end of the core body 4 along its axis; A fixing seat 10 is provided in the lower part of the support tube 9, which has a fitting hole 8 in the center into which the main body 4 of the metal 1 is inserted, and a support part 11 for supporting the fixing nail 3 is provided on the outside of the support tube 9. and a synthetic resin support 2 formed integrally with the core bar 1.
A recess 7 is formed in the lower surface of the flange portion 5 to accommodate the head of the fixing nail 3, while a support cylinder 9 of the synthetic resin support body 2 is formed.
At the upper part, via a plurality of spoke-like connecting pieces 12, a ring-shaped guide ring 13 for preventing removal is provided, the upper surface of which is in the shape of a diagonal plane with the lower surface of the flange part 5, and whose outer diameter is slightly larger than the outer diameter of the flange part 5. A ceiling insert characterized by integrally installed.