JP2866686B2 - Underfloor ventilation structure of unit house - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an underfloor ventilation opening structure for a unit house.

[Prior Art] Conventionally, as one of the underfloor ventilation opening structures in a unit house, there is one as shown in FIGS. 6 and 7, for example.

In FIG. 6, reference numeral 1 denotes a skeleton unit that forms the skeleton, and reference numeral 11 denotes a cloth foundation that supports the skeleton unit. The frame unit 1 is provided with anchors 2 projecting downward at appropriate places on the lower surface thereof. Anchor holes 12 are formed at the top end of the cloth base 11 at positions corresponding to the anchors 2... Of the frame units. At the top edge of the cloth base 11, there are provided recesses 13 formed by using a die or the like when the cloth base 11 is constructed.

By fitting the anchors 2 into the anchor holes 12 and mounting and fixing the lower surface of the skeleton unit 1 to the top end of the cloth base 11, the cloth foundation 11 and the skeleton unit 1 They are joined together as shown in FIG. In such a joined state, the recesses 13 formed in the cloth base 11 remain open without being closed by the lower surface of the skeleton unit 1.
… Is an underfloor vent.

[Problems to be solved by the invention] However, in the conventional underfloor ventilation opening structure, a cloth foundation
It is necessary to form the recesses 13 by using a die or the like at the time of constructing the structure 11, which is troublesome and costly in construction, and has a drawback that the construction period cannot be shortened. Also, during long-term use,
There is a concern that cracks such as cracks may be generated around the openings of the recesses 13 forming the underfloor ventilation holes, especially at corners, leading to a decrease in the proof stress of the cloth foundation 11, which may also shorten the life of the unit house. Also, depending on how the recesses 13 are arranged on the cloth foundation 11, a distribution of the air flow under the floor occurs, and in particular,
There is also a problem that ventilation efficiency is poor, for example, an air pocket is easily formed in the corners and corners of the airbag. When a porch is provided on the south side of the unit house due to the design of the unit house, it is customary to make a porch by driving concrete into the cloth foundation 11 so as to be in direct contact therewith. However, in this case, there is an inconvenience that the recesses 13 provided in the cloth base 11 are closed by the pouch, and the function as a ventilation port cannot be performed.
In addition, this underfloor vent is usually about 100 mm x 300 mm in size in order to exhibit sufficient ventilation and ventilation performance, but this size can not prevent the invasion of pests such as mice. In winter, the insulation under the floor is excessively deprived, which is inconvenient. For this reason, in the winter, the underfloor ventilation openings must be covered with a lid or the like, so that the underfloor insulation must be secured.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to reduce the occurrence of cracks and the like over a long period of time to extend the life of a unit house. The purpose of the present invention is to provide an underfloor vent structure of a unit house that can be shortened.

Means for Solving the Problems According to the present invention, in a unit house in which a skeleton unit forming a skeleton is fixed to a top end of a cloth foundation, a lower surface of the skeleton unit is formed flat and a lower surface of the unit is formed. An anchor is projected downward, and an anchor hole for fitting the anchor is provided at a position corresponding to the anchor on the top end of the cloth foundation, and a bolt hole is provided near the anchor hole, A level adjustment bolt is screwed into the bolt hole with its head separated from the top end of the cloth foundation, the skeleton unit and the cloth foundation allow the anchor to be fitted into the anchor hole, and the lower surface of the skeleton unit is The level adjusting bolts are joined to each other while being supported by the heads, and a clearance is provided between the lower surface of the skeleton unit and the top end of the fabric base to serve as a ventilation opening under the floor. It was a step.

[Operation] In forming the underfloor ventilation opening of the present invention, after assembling the skeleton unit, an anchor extending downward is protruded at an appropriate place on the lower surface of the skeleton unit.

On the other hand, a fabric foundation for supporting the skeleton unit is cast, and at the time of this casting, an anchor hole for fitting the anchor is formed at a position corresponding to the anchor at the top end of the fabric base. At the same time, a bolt hole is formed in the vicinity of the anchor hole, and the level adjustment bolt is screwed in such a state that its head is spaced from the top end of the cloth foundation at an appropriate distance.

Then, while inserting the anchors into the corresponding anchor holes, the frame unit is gradually lowered to the top of the cloth base until the lower surface of the frame unit is placed on the head of the level adjustment bolt.

After the cloth foundation and the skeleton unit are joined with a predetermined gap in this way, the joint between them, that is, the anchor and the level adjustment bolt exposed from this gap are fixed and fixed with an appropriate mortar material. At this time, the gap formed between the cloth foundation and the skeleton unit exerts ventilation and ventilation performance, and acts as an underfloor ventilation opening of the unit house.

According to such a method of forming an underfloor ventilation port, it is not necessary to form a concave portion serving as an underfloor ventilation port on the cloth foundation as in the related art, and labor and cost can be greatly reduced.

In addition, even in the obtained underfloor ventilation structure, the underfloor ventilation holes are provided around the entire circumference of the cloth foundation, so that the air flow is smooth and uniform, and the efficiency of ventilation ventilation performance is improved. I can do it. Further, according to this structure, cracks and damages such as cracks do not occur in the cloth foundation, and the strength as the cloth foundation can be maintained for a long period of time. Also, even when a porch is provided due to the design of a unit house or the like, the ventilation port is not blocked, and there is flexibility to be able to cope with various design plans.

Example An example of the present invention will be described below with reference to the drawings.

1 to 3 show one embodiment of the present invention. FIG. 1 shows the respective structures of a skeleton unit and a fabric base, and FIGS. 2 and 3 show the joining of both. The state is shown. The same components as those in the conventional example shown in FIGS. 6 and 7 are denoted by the same reference numerals, and description thereof will be simplified.

As shown in the figure, the unit house of this example has a frame unit 1 forming a frame supported and fixed on a cloth foundation 11.

The skeleton unit 1 is formed by attaching a wall panel formed by bonding an interior base or an exterior base to a surface of a frame formed by assembling a core material or the like into a rectangular contour, for example, in a rectangular box in accordance with a desired unit housing skeleton shape. They are combined in a mold and joined to form the outline of the skeleton. The lower surface of the body unit 1 is formed flat, and further, anchors 2 extending downward are protruded at appropriate places on the lower surface. In this embodiment, the anchors 2 are projected from each corner of the lower surface of the skeleton unit 1.
In addition, it may be provided at an appropriate position between the corners according to the size of the skeleton unit 1 and the like. As shown in FIGS. 2 and 3, these anchors 2 are attached to the lower core 1a of the panel P constituting the frame unit 1.
It is attached as described above by being screwed in from the inside.

The cloth foundation 11 is formed by being cast on a footing portion serving as a foundation in a rectangular box shape having substantially the same shape as the outline of the body unit 1. And self-leveling mortar 14 is cast on the top of the cloth base 11,
It is shaped so that a horizontal surface is maintained. At the top of the cloth base 11 thus formed, at the corners corresponding to the anchors 2 projecting from the lower surface of the skeleton unit 1, the corners vertically extend from the top to the inside of the cloth base 11. Anchor holes 12 for fitting the anchors 2 are provided. Also, bolt holes 15 are provided near these anchor holes 12 respectively. In this example, the bolt holes 15 are formed by cutting one end surface of a substantially cylindrical deformed reinforcing bar 16.
The bolt holes 15 are provided by being embedded so that the opening surfaces of the bolt holes 15 are aligned with the top end of the cloth base 11, but other configurations are of course acceptable. The bolt holes 15 may be provided not only in the vicinity of the anchor holes 12 but also at appropriate positions between the anchor holes 12. Level adjusting bolts 17 are screwed into the bolt holes 15 with the heads 17a apart from the top end of the cloth base 11 from above. Here, level adjustment bolts 17 ...
By adjusting the degree of screwing, the distance between the head 17a of the level adjustment bolt and the top end of the cloth base 11 is appropriately changed.

FIG. 2 and FIG.
FIG. 3 illustrates a state of connection between the skeleton unit 1 and the skeleton unit 1 and illustrates a structure of an underfloor ventilation opening of a unit house of the present invention.

According to the figure, anchors 2 extending from the lower surface of the skeleton unit 1 are provided with anchor holes provided at the top end of the cloth foundation 11.
The cloth foundation 11 and the skeleton unit 1 are joined to each other by being fitted into the 12. In such a joined state, the lower surface of the skeleton unit 1 is supported by the heads 17a of the level adjustment bolts screwed to the top end of the cloth foundation 11, and between the skeleton unit 1 and the cloth foundation 11. , The level adjusting bolts 17... Protrude from the top of the cloth foundation, and a gap 20 is provided over the entire circumference of the cloth foundation 11.
However, this is the underfloor vent of this unit house. The size of the gap 20 can be changed as appropriate by adjusting the degree of screwing of the level adjusting bolts 17. However, usually, the invasion of pests such as rats and grouper rats is prevented, The thickness is preferably about 10 to 20 mm from the viewpoint of not excessively depriving the heat insulation property under the floor.

In the joint structure between the cloth base 11 and the skeleton unit 1, the level adjustment bolt 17 and the anchor 2 exposed between them are fixed by mortar 21 or the like, whereby the cloth base 11 and the skeleton unit 1 are connected. It is joined and integrated.

Further, in the above configuration, the cloth foundation 11 and the skeleton unit 1 are arranged.
The above-mentioned underfloor ventilation opening (gap) 20 formed between the reticle and the underfloor ventilation opening 20 has a mesh lid having a size and shape corresponding to the underfloor ventilation opening 20.
22 is fitted. Reticulated lid 22 in the present embodiment
Is as shown in FIG. On the bottom plate 22a, a wire mesh plate 22b in which vertical lattices are arranged at intervals of about 2 mm is vertically erected,
Further, a top plate 22c is provided at the upper end thereof in parallel with the bottom plate 22a. In addition to this, for example, a punching metal plate 22d having a punch hole having a width of about 2 mm is formed.
May be provided vertically between the bottom plate 22a and the top plate 22c. Such a net-like lid 22 is formed by bonding and nailing the bottom plate 22a on the top of the cloth foundation 11 in the underfloor ventilation opening and the top plate 22c on the lower surface of the skeleton unit 1 in the same portion. Fixed.
By arranging the mesh-like lid 22 in the underfloor ventilation port 20 and closing the underfloor ventilation port 20 in this way, an advantage in fire prevention measures of the unit house can be obtained.

According to such a structure of the underfloor ventilation port 20, the gap 20 formed over the entire circumference between the cloth foundation 11 and the skeleton unit 1 at the same time as the joining is formed as the underfloor ventilation port. In addition, it is possible to reduce the labor and cost involved in the production, shorten the latter period, and exhibit sufficient ventilation and ventilation performance. That is, the air flow is smoother and more uniform than in the conventional underfloor vents formed of locally formed concave portions 13 of the cloth foundation 11, and even in the corners and corners, the air pocket is formed. Since there is nothing that can be done, ventilation efficiency is significantly improved. Besides, as before,
There is no concern that cracks or other damages such as cracks will occur from the periphery of the opening of the recesses 13 provided in the cloth foundation 11, and the strength of the cloth foundation can be maintained for a long period of time. In addition, since the underfloor ventilation hole 20 in the present invention is provided to be elongated over the entire circumference of the cloth foundation 11, the heat insulation under the floor in winter is not impaired, and the underfloor ventilation hole 20 is not closed in winter as in the related art. There is no need to worry about the invasion of pests such as mice and grouper rats. In addition, since this underfloor ventilation port 20 is provided above the top of the cloth foundation 11, even when a porch is installed due to the design of the unit house, the porch does not block the ventilation port 20, There is also an advantage that it can support a wide variety of design plans.

Note that the underfloor ventilation opening structure of the unit house of the present invention is not limited to the configuration of the above embodiment as long as it does not deviate from the scope of the claims of the present invention.

[Effects of the Invention] As described above, since the present invention has the above-described configuration, the gap formed between the cloth foundation and the skeleton unit functions as an underfloor ventilation port, so that it takes time and effort to manufacture the same. In addition to reducing costs and shortening the construction period, there is no crack or damage from the periphery of this underfloor ventilation port,
Excellent proof stress can be maintained over a long period of time. Further, in the configuration of the present invention, since the underfloor ventilation port is provided over the entire circumference of the cloth foundation, there is no distribution in the air flow,
A sufficiently high ventilation and ventilation performance can be exhibited. In addition, since the underfloor vent is an elongated gap between the cloth foundation and the skeleton unit, it has an effect of preventing the invasion of pests such as mice, and can maintain the thermal insulation under the floor excessively even in winter. Therefore, there is also an advantage that it is not necessary to close the underfloor ventilation port. Further, if the underfloor ventilation opening is covered with an appropriate net-like lid, it is convenient for fire prevention. In addition, even when a porch is provided according to the design of the unit house, for example, the porch does not block the underfloor ventilation port, and has flexibility to be able to cope with various design plans of the unit house. Further, according to the configuration of the present invention, the underfloor ventilation opening can be set to a desired size by a simple operation of simply adjusting the degree of screwing of the level adjustment bolt,
Ventilation performance and fire prevention performance can be adjusted.

[Brief description of the drawings]

FIGS. 1 to 3 show an embodiment of the underfloor ventilation opening structure of a unit house according to the present invention. FIG. 1 is a perspective view showing the respective structures of a cloth foundation and a skeleton unit, FIG. FIG. 3 is a cross-sectional view and a cross-sectional view of a main part, respectively, illustrating a joint state between a cloth foundation and a skeleton unit and illustrating a structure of an underfloor ventilation port. FIGS. 4 and 5 are diagrams of a net-like lid used in the present invention. It is a perspective view showing a different example,
6 and 7 are perspective views showing an example of a conventional underfloor vent structure. 1 ... frame unit, 2 ... anchor, 11 ... cloth foundation,
12 ... anchor hole, 15 ... bolt hole, 17 ... level adjustment bolt, 20 ... underfloor ventilation hole (gap).

Claims (1)

(57) [Claims] 1. A unit housing in which a frame unit forming a frame is fixed to a top end of a cloth base, wherein a lower surface of the frame unit is formed flat, and an anchor projects downward from the lower surface of the unit. An anchor hole for inserting the anchor is provided at a position corresponding to the anchor on the top end of the cloth foundation, a bolt hole is provided near the anchor hole, and a level adjusting bolt is provided in the bolt hole. The head is screwed away from the top end of the cloth foundation, and the skeleton unit and the cloth foundation allow the anchor to be inserted into the anchor hole, and the lower surface of the skeleton unit is supported by the head of the level adjustment bolt. Characterized in that a gap is provided between the lower surface of the skeleton unit and the top end of the fabric base, the gap serving as an underfloor ventilation port is provided. Mouth structure.