JPS636324Y2 - - 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 the ventilation opening grid is removable.

In a house building structure, when the foundation is made of concrete, it is necessary to provide a window-like ventilation hole in a part of the concrete foundation for ventilation under the floor. A ventilation port grid is attached to the opened ventilation port to prevent dogs, cats, etc. from entering. It is also desirable that the vent grid be removable in case of damage due to corrosion over time or for cleaning under the floor. However, in conventional structures, the trellis is usually fixed directly to the foundation for convenience in construction. Therefore, it was necessary to destroy part of the foundation in order to remove the ventilation grid.

The present invention provides a horizontal rod insertion hole made of an elastic material such as a rubber material, which has a horizontal rod insertion hole on each of the opposite side walls of the ventilation opening of the foundation, and has a hollow part connected to the horizontal rod insertion hole. The body is buried with its horizontal rod insertion holes opening toward the ventilation opening, and both ends of the horizontal rods of the ventilation hole grid are removably inserted into the horizontal rod insertion holes of the horizontal rod insertion body. This provides an under-floor ventilation opening with a removable ventilation grate.

The illustrated embodiment will be described in detail below. FIG. 1 is a front view showing an embodiment of the ventilation hole of the present invention, and FIG. 2 is a partially cross-sectional plan view of the same example. A ventilation opening grid 3 is installed in the center of its thickness with both ends of horizontal rods 4 fitted into both side walls of the ventilation opening of the foundation 1. A large number of vertical rods 5 are arranged at intervals on the horizontal rods 4 of the ventilation opening grid 3, and on the both sides of the walls into which both ends of the horizontal rods 4 are fitted, as shown in the third figure,
A horizontal rod-fitting insert 6 made of an elastic material such as a rubber material or a synthetic resin material is buried with its horizontal rod-fitting hole 6a opening toward the ventilation port 2.
The horizontal rod fitting insertion hole 6a of this horizontal rod fitting insertion body 6 has a narrow opening shape with a hole diameter smaller than that of the hollow portion connected thereto, and the horizontal rod fitting insertion hole 6a is inserted into the horizontal rod fitting insertion hole 6a.
The horizontal rod 4 is fitted and held in a semi-fixed state in which it is elastically tightly fitted to the edge of the rod and cannot be easily inserted or removed. Furthermore, a locking valve piece 6b is protruded from the outer peripheral surface of the horizontal rod insert 6 to prevent it from falling off when it is buried in the foundation 1. In addition, 7 and 7 in the figure indicate the formwork used when forming the foundation 1,
Reference numerals 8 and 8 indicate the tapered surface of the ventilation port 2 for die cutting.

In the ventilation port of the present invention having such a configuration, when stamping the concrete foundation 1, the horizontal rod insertion holes 6 are inserted into both ends of the horizontal rods 4 of the ventilation hole grid 3 configured in advance through the horizontal rod insertion holes 6a. With the frame structure fitted, the ventilation opening grid 3 is fixed by sandwiching both ends of the horizontal rods 4 between the formworks 7, 7 (state shown in the fourth figure), and concrete is poured under this framework structure. to form foundation 1. When the formworks 7, 7 are punched outward along the punching taper surfaces 8, 8 after the concrete hardens (the state shown in the fifth figure), the ventilation opening grid 3 is formed in the component part of the ventilation opening 2 of the foundation 1. It will be in the installed state as shown in Figures 1 and 2. When the foundation 1 is formed, the horizontal rod inserts 6, 6 are embedded in a predetermined position with a predetermined orientation.

Therefore, when the ventilation opening grid 3 is damaged due to corrosion over time and is to be removed and replaced, the ventilation opening grid 3 is first forced to shift sideways in the direction of its horizontal rods 4. With this work, both ends of horizontal rod 4 are
It moves relative to the horizontal rod insert 6 that has been semi-fixed until now, and one end is inserted deeper into the horizontal rod insert 6, and the other end is removed from the horizontal rod insert 6. The other end that has come out is pulled out along the tapered surface 8 for die cutting as shown in FIG. Ventilation grid 3
can be easily removed from the ventilation port 2. At the time of reinstallation, it can be installed by performing the reverse operation of the above-mentioned removal operation, and in the reinstallation state, the horizontal rod insertion hole 6a of the horizontal rod insertion body 6 is tightly connected to both ends of the horizontal rod 4 due to its elasticity. It fits perfectly, so there is no chance of it falling out accidentally.

In this way, the ventilation hole of the present invention is embedded in the side walls of the foundation ventilation hole as described above, and the ventilation hole grid is attached by tightly fitting both ends of the horizontal rod into the horizontal rod inserts made of elastic material. In addition to preventing the ventilation opening grid from falling off inadvertently, it is also possible to remove it when necessary. In particular, according to this configuration of the ventilation opening of the present invention, when forming concrete for the foundation, the horizontal rod fitted with the pipe body can be removed. Since all you need to do is assemble it with the formwork and pour concrete, it is possible to construct an underfloor ventilation opening with a removable trellis without compromising the workability of the foundation construction. The effect is extremely effective.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the vent of the present invention, Fig. 2 is a partial cross-sectional plan view of the same embodiment, and Fig. 3 is an enlarged view of the main parts of the vent grid of the vent of the present invention. FIG. 4 is a partial cross-sectional plan view showing the structure of the molded foundation having the vents of the present invention, FIG. 5 is a partial cross-sectional plan view showing the molded state, and FIG. FIG. 3 is a partially cross-sectional plan view showing the ventilation port of the present invention with the ventilation port grid removed; 1... Foundation, 2... Ventilation port, 3... Ventilation port grid, 4... Horizontal rod, 5... Vertical rod, 6... Horizontal rod fitting insert, 6a... Horizontal rod fitting hole.

Claims (1)

[Scope of utility model registration request] On each opposite side wall of the foundation ventilation hole,
A horizontal rod insertion body made of an elastic material such as a rubber material and having a horizontal rod insertion hole and a hollow portion connected to the horizontal rod insertion hole is opened with the horizontal rod insertion hole facing the ventilation opening. An underfloor ventilation opening formed by removably fitting both ends of the horizontal rods of a ventilation opening grid into the horizontal rod fitting holes of the horizontal rod fitting insert.