JPH0122013Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an underfloor ventilation opening, and is particularly characterized by a structure in which a ventilation opening grid is configured to be detachable from the ventilation opening.

It is well known that when the foundation of a house is constructed of concrete, a window-like ventilation hole is provided in a part of the concrete foundation for ventilation under the floor. Ventilation grilles are installed to prevent dogs and cats from entering, but
They are usually buried within concrete foundations and are difficult to remove. Moreover, the removable ones have extremely simple structures, and there is a risk that they may easily fall off due to external shocks.

The present invention rectifies the conventional drawbacks as mentioned above,
The vent grating is configured to be removable and securely locked inside the vent.
A hollow tube body with a threaded opening end is embedded in the upright edge walls of a ventilation opening provided in a part of the foundation, and a flanged cap with a hook hole is screwed into each of the threaded opening ends. At the same time, hooks that match the hook holes are provided at both ends of the horizontal members of the ventilation grid, and the hooks are inserted into the respective hook holes to engage the horizontal members of the ventilation grid within the hollow pipe body. The flanged cap, which is screwed into the threaded opening end, is inserted into the threaded opening of the hollow tube while the flange of the vent grate is inserted into the hook hole of the flanged cap. This invention proposes an underfloor ventilation opening that is characterized by being able to rotate along the following directions. The gist of the present invention will be explained below based on the embodiments shown in the drawings.

FIG. 1 is a perspective view showing the arrangement of the formwork when forming the underfloor ventilation hole of the present invention, with the ventilation hole formwork removed. Figure 2 is an enlarged exploded perspective view of the main parts showing the installation and removal structure of the ventilation port grid in the ventilation port, and Figures 3 to 6 are partially cutaway plan views showing the construction of the ventilation port in order. be. In the drawings, reference numeral 1 denotes a mold for forming a ventilation hole, which houses a ventilation hole grid 2 inside thereof, and has a plurality of hollow tube bodies 4 fitted in the cross members 3 at both ends thereof in advance. This ventilation opening grid 2 is made up of the above-mentioned horizontal members 3 and vertical members 3', and flat hooks 5 are formed at both ends of the horizontal members 3, as shown in FIG. The exposed end of the hollow tube body 4 is provided with a thread 6 and a flange 7, while the buried portion is provided with fins 8 and a large flange 9 for both reinforcement and fixation. Reference numeral 10 denotes a cap with a flange, which is screwed into the thread 6 and tightened.The flange 10a is provided with a hook hole 11 so that the hook 5 of the lattice 2 described above can be inserted therethrough.

Therefore, in Fig. 1, the formwork 1 is placed between the formwork panels 13, 13 forming the foundation 12, but as shown in Fig. 3, the formwork 1 is set in two parts. After aligning and arranging the assembled vent grid 2, flanged cap 10, and hollow tube body 4 on one formwork 1a, and then fixing the other formwork 1b, the mold is assembled as shown in the fourth figure. Frame panel 1
3 and 13 are fitted in the required positions, concrete is poured to form the foundation 12, and after hardening, the formwork panel 13 and formwork 1 are removed as shown in Figure 5. Removal of ventilation port grid 2 (6th
), the upper and lower flanged caps 10 are rotated along the threads 6, and the hook holes 11, 11 are connected to the hook portions 5, 11, respectively.
5, the entire lattice 2 is shifted to one side along the hollow cylindrical body 4 to remove the other hook portion 5, and is further moved in the opposite direction to remove the remaining hook portion 5.

Next, to install the ventilation opening grid 2, contrary to the above, one hook 5 is inserted into the hook hole 11 of one of the flanged caps 10, and then the other hook 5 is inserted into the hook of the other flanged cap 10. By inserting the grating 2 into the hole 5 and rotating the flanged cap 10 appropriately, the phases of the hook portion 5 and the hook hole 11 can be made different.
This prevents the device from falling off.

As mentioned above, according to the present invention, unless the hook holes 11 of the flanged cap are aligned with the hooks 5 of the horizontal member 3, it is impossible to remove the ventilation opening grid, and the When installed in a wood, it is impossible to align the hook holes due to friction, impact, etc. from the outside world, and it has the excellent advantage of being able to securely and firmly hold the vent grid. This is a huge contribution.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the arrangement of the formwork when forming the underfloor ventilation opening of the present invention, Figure 2 is an enlarged exploded perspective view of the main parts showing the installation and removal structure of the ventilation opening grid in the ventilation opening; 3, 4, 5, and 6 are partially cutaway plan views sequentially showing the construction of the ventilation port. 1... Formwork for forming ventilation holes, 2... Ventilation port grid,
3...Horizontal member, 3'...Vertical member, 4...Hollow tube body, 5
...Hook part, 6...Screw thread, 7...Flame part, 8...Fin, 9...Large flange, 10...Cap with flange, 11
...Hookhole, 12...Foundation, 13...Formwork panel.

Claims (1)

[Scope of utility model registration request] A hollow tube body with a threaded opening end is embedded in the upright edge walls of a ventilation opening provided in a part of the foundation, and a flanged cap with a hook hole is screwed into each of the threaded opening ends. At the same time, hooks that match the hook holes are provided at both ends of the horizontal members of the ventilation grid, and the hooks are inserted into the respective hook holes to engage the horizontal members of the ventilation grid within the hollow pipe body. The flanged cap, which is screwed into the threaded opening end, is inserted into the threaded opening of the hollow tube while the flange of the vent grate is inserted into the hook hole of the flanged cap. A floor vent characterized in that it is rotatable along the floor.