JPH0341528Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is designed to respond to the upright and tilting movements of the shielding plate by attaching the shielding plate having a double wall structure to the ventilation frame so that it can be raised and lowered. The present invention relates to an underfloor ventilation system that can regulate the inflow of outside air into a room, improve livability, and at the same time exhibit an energy saving effect.

(Problems to be solved by the prior art and the invention) In recent years, as shown in Fig. 5, all rooms a...
Air circulation type buildings surrounded by a communicating air layer b are attracting attention. Roughly speaking, this building forms a space c between the wall surface of the room and the outer wall surface, and between the wall surfaces of the room, and communicates the space c with the space d in the attic and the space e under the floor, and Ventilation holes f on the back or cloth foundation, etc.
In the summer, the ventilation holes f are kept open, and at night the cold air from outside is taken in, flowing through the entire building spaces c, d, and e to store cold energy, and during the day, hot air is exhausted and the air is opened at night. While the stored cold energy protects room a from the heat, the ventilation hole f is kept closed during the winter, and during the day the solar heat is collected on the roof and walls, covering room a with warm air and the collected heat is transferred to the building. In addition to storing it throughout,
At night, the room a is heated by dissipating the stored heat, and the air layer part b (i.e., the heat insulating layer) in a stationary state is configured to ensure the heat insulation of the room a.

In this way, ventilation holes play an important role in this type of building, especially in the winter.
It is necessary to reliably prevent heat radiation from the ventilation hole f. However, in conventional underfloor ventilation systems equipped with a shielding plate that blocks ventilation holes, the shielding plate is composed of a single plate as disclosed in, for example, Japanese Utility Model Publication No. 17035/1973. The shielding plate was sufficient to prevent heat radiation from the ventilation holes.

The present invention was developed mainly in view of these problems, and in addition to the function of adjusting the amount of outside air intake, it improves the insulation of the ventilation holes that are in a blocked state, and is useful for heating inside buildings in cold regions. The purpose is to provide an underfloor ventilation system that increases effectiveness. Another object of the present invention is to provide an underfloor ventilation system that has a simple structure and can be manufactured at low cost.

(Example) An example of the present invention will be described below based on the drawings.

In Figures 1 to 4, the underfloor ventilation system 1 of the present invention is shown.
This is a ventilation frame body 6 in which a ventilation hole 3 of a ventilation frame main body 2 is covered with a ventilation member 5, and a shielding plate body 8 capable of closing the ventilation hole 3 is integrally attached via a hinge part 10, The shielding plate body 8 can be raised using a string body 9. The ventilation frame main body 2 and the shielding plate body 8, which are connected by the hinge part 10, are integrally molded by blow molding using synthetic resin.

The ventilation frame main body 2 is formed as a frame-shaped hollow body made of hard synthetic resin, and has upper and lower end surfaces 12 and 13 that are horizontal surfaces and side end surfaces 15 on the indoor side (rear side) peripheral edge of the hollow rectangular frame section 11. , 16 are vertical surfaces, and a hollow collar part 17 is provided in series, and a hollow collar part 17 is provided on the outdoor side (front side) lower edge of the collar part 17, which protrudes forward and has an upper surface 19.
It is formed by consecutively providing hollow draining parts 20 which are tilted diagonally downward. Note that the lower upper surface 22 of the hollow rectangular frame portion 11
The hollow draining portion 20 is also inclined approximately parallel to the upper surface 19 for the purpose of draining water. Also, the rear part 2 of the ventilation frame main body 2
3, as shown in FIG. 2, has relatively narrow vertical surfaces 24, 24 on both side edge portions, and relatively narrow vertical surfaces 25, 26 on its upper and lower edge portions. and the continuous vertical surfaces 24, 2
4, 25, and 26 are provided with a continuous vertical circumferential surface 29 via a step 27, and the vertical circumferential surface 2
9 has a continuous vertical circumferential surface 31 via a step 30.
are installed in succession. Then, the peripheral edge portion 32 of the ventilation member 5 made of, for example, a net is attached to the step 3.
The ventilation frame 6 can be configured by being attached to the recess 33 consisting of the vertical circumferential surface 31 and the vertical peripheral surface 31. The ventilation member 5 is attached for the purpose of ensuring ventilation while preventing the intrusion of small animals such as insects, rats, and small birds.In addition to the above-mentioned netting, the ventilation member 5 can be formed as a flat plate with louvers or slits arranged in parallel. , may be integrally molded with the ventilation frame main body 2. Further, on both sides of the upper frame portion 35 of the ventilation frame main body 2, relatively large diameter through holes 36, 36 are provided that penetrate through the front and rear surfaces (the vertical circumferential surface 29), and the upper frame portion 35
A through hole 37 with a relatively small diameter is provided in the center of the front and rear surfaces thereof.

The shielding plate body 8 is connected to the wall surface portion 3 facing to each other with a gap between them.
One side edge of the wall portion 39, which is formed into a flat rectangular plate made of hard synthetic resin in which the peripheral portions 41 of 9 and 40 are continuously integrated and contains an air layer inside, and is located on the outdoor side when the wall portion 39 is erected. (the lower edge portion 42 of the shielding plate 8) extends over its entire length, and the lower edge portion (the upper edge 26 of the vertical surface 26) on the indoor side of the ventilation frame main body 2
(slightly lower part of a) 43 via the hinge part 10 made of thin hard synthetic resin or soft synthetic resin so that it can be raised and lowered, and when raised,
The peripheral portion 44a of the wall surface portion 39 is the vertical surface 24,2
4, 25, 26 in close contact with the ventilation hole 3 of the ventilation frame 6.
is closed, and the ventilation hole 3 is opened by tilting it. In addition, a protrusion 45 having a trapezoidal cross section is provided around a portion of the wall portion 39 near the periphery 44 slightly away from the periphery 44 , and the outer circumferential surface 46 and top surface 47 of the protrusion 45 correspond to the step 27 . The shielding plate body 8 closes the ventilation hole 3 while in close contact with the vertical surface 29, thereby improving the airtightness of the ventilation hole 3 portion in the closed state. Furthermore, when the shielding plate body 8 stands up, it passes through the through hole 36 and the tip end portion 50a is exposed to the front surface 49 of the upper frame portion 35 of the ventilation frame main body 2.
A fixed shaft 50 protruding from the wall portion 39 is fixed to a pedestal 51 provided on the wall portion 39 . The front end portion 50a of the fixed shaft 50 is provided with locking grooves 52, 52 facing each other, and the width of the wedge portion 54 consisting of the opposing bottom surfaces 53, 53 is as shown in FIG. 4b.
It is formed to become wider from one end 54a to the other end 54b.

In FIG. 1, reference numeral 55 is a fixing piece made of synthetic resin, which has an oval outer shape and is attached to the wedge portion 5.
Wedge-shaped through hole 56 whose width becomes narrower according to the width change of 4.
It has a keyhole-shaped locking hole 59 in which a circular through hole 57 having a slightly larger diameter than the fixed shaft 50 is connected to one wide end 56a. Therefore, Fig. 4a,
As shown in b, when the ventilation hole 3 is closed with the shielding plate 8, that is, with the distal end portion 50a of the fixed shaft 50 protruding from the front surface 49 of the upper frame portion 35, the circular through hole 57 of the fixed piece 55 is closed. After fitting into the tip side portion 50a, one end (opening end) 5 of the wedge-shaped through hole 56
6a sandwich one end 54a of the wedge portion 54, and then the wedge-shaped through hole 56 of the fixing piece 55
When engaged with the wedge portion 54, the fixed piece 55 is firmly integrated with the fixed shaft 50 due to the wedge action,
The fixing shaft 50 is securely prevented from coming out by contacting the outdoor peripheral edge of the through hole 36, and in this state, the shielding plate 8 closes the ventilation hole 3 without play.

One end 9a of the string 9 used to raise the shielding plate 8 is attached to an attachment piece 60 provided approximately at the center of the wall portion 39 near the upper edge, while the other end of the string 9 9b is the through hole 37
is led to the outside through Therefore, the shielding plate body 8 can be raised by pulling the string 9, while the distal end portion 50a of the fixed shaft 50 is moved rearward after the fixing piece 55 is removed by the operation opposite to the above. By pressing lightly and adjusting the string 9, the shielding plate 8 can be tilted using its own weight. As shown in FIGS. 2 and 3, the shielding plate 8 maintains a substantially horizontal state with its lower end surface 61 in contact with the vertical surface 26, and the ventilation hole 3 is fully opened. Note that by appropriately selecting the tension length of the string 9, it is also possible to adjust the amount of outside air taken in from the ventilation hole 3.

The underfloor ventilation system 1 of the present invention is fitted into an opening formed between a notch h provided in a cloth foundation g and a base i, as shown in FIGS. 3 and 5, for example. Fixed. The underfloor ventilation system 1 is provided by tilting the shielding plate body 8 in the summer.
Outside air can be introduced under the floor for efficient ventilation. On the other hand, in winter, by closing the ventilation hole 3 with the shielding plate 8, heat radiation from the ventilation hole 3 can be reliably prevented. To explain the latter in more detail, as mentioned above, the shielding plate 8 is formed as a sealed body with a double wall structure that includes an air layer inside, so it is different from the conventional shielding plate made of a single plate. Compared to the above, in addition to the improved heat insulating properties due to the double synthetic resin walls, excellent heat insulating properties can be ensured due to the sealed air layer, and heat radiation from the three ventilation holes can be reliably prevented.

FIG. 6 shows a case in which an elastic airtight material 63 such as polyurethane is fitted into a groove 62 provided around the peripheral edge portion 44a of the wall portion 39 so as to slightly protrude from the wall portion 39, and is fixed with adhesive. Sometimes, when the ventilation hole 3 is closed by the shielding plate 8, the elastic airtight material 63 is compressed to the vertical surfaces 24, 2.
4, 25, and 26, and the ventilation hole 3
The airtightness in the area can be further improved.

In the underfloor ventilation system of the present invention, the string used to raise the shielding plate is a concept that includes strings and similar materials, and the string is attached to the shielding plate by opening and closing the shielding plate. It can be set arbitrarily as long as it does not cause any problem. Further, the inside of the shielding plate body and the inside of the main body of the ventilation frame may be filled with foamed synthetic resin for the purpose of improving rigidity.

(Effect of the invention) The underfloor ventilation system of the invention includes a shielding plate body 8 that blocks the ventilation hole 3 of the ventilation frame body 6.
Since it is formed as a sealed body with a double wall structure, it can ensure excellent heat insulation, and it can reliably prevent heat radiation from the three ventilation holes, increasing the heating effect inside buildings in cold regions. I can do it. Therefore, the underfloor ventilation system of the present invention can be particularly suitably employed in an air circulation type building as shown in FIG. 5, and can improve livability and exhibit an energy saving effect.

Ventilation frame main body 2 connected by hinge part 10
Since the shielding plate body 8 and the shielding plate body 8 can be integrally molded by blow molding using synthetic resin, the molding can be easily performed. In addition, the string 9 is used to open and close the shielding plate 8, and the shielding plate in the closed state is held by a cylindrical fixed shaft 50 and a fixed piece 55 that engages with the fixed shaft 50. Therefore, the opening/closing mechanism and holding mechanism of the shielding plate body are simple. Therefore, it is possible to reduce the cost of the underfloor ventilation system.

[Brief explanation of drawings]

Figure 1 is a perspective view of the underfloor ventilation system of the present invention seen from the front, Figure 2 is a partial perspective view of the underfloor ventilation system of the present invention seen from the rear, and Figure 3 shows the operation of the underfloor ventilation system of the present invention. 4a is a perspective view illustrating how to fix the shielding plate in an upright position, 4b is a front view thereof, and 5th figure is an air circulation type with an underfloor ventilation system installed. An explanatory diagram explaining the building,
FIG. 6 is a cross-sectional view showing the main part of the shielding plate body to which the elastic airtight material is attached, together with its function. 1... Underfloor ventilation system, 2... Mainly ventilation frame, 3...
... Ventilation hole, 5... Ventilation member, 6... Ventilation frame,
8... Shielding plate body, 9... String body, 10... Hinge part,
36...Through hole, 39, 40...Wall surface part, 42...
...Lower edge portion of shielding plate body, 43...Lower edge portion of main body of ventilation frame, 50...Fixed shaft, 54...Wedge portion, 5
5... Fixed piece, 56... Wedge-shaped through hole, 57...
Arc-shaped through hole, 59...locking hole.

Claims (1)

[Claims for Utility Model Registration] A ventilation frame body 6 comprising a ventilation hole 3 of a synthetic resin ventilation frame main body 2 covered with a ventilation member 5 for preventing the intrusion of small animals, and a wall portion 39 facing at a predetermined distance. ，
The lower edge portion 42 of the shield plate 8 is the lower edge of the ventilation frame main body 2 on the indoor side. The hinge portion 10 made of synthetic resin is attached to the portion 43.
The shield plate body 8 is attached to the shield plate body 8 at one end so that it can be raised and lowered freely, and the shield plate body 8 can be raised by a cord 9 whose one end is attached to the shield plate body 8 and whose other end is located on the outdoor side of the ventilation frame main body 2. The ventilation hole 3 of the ventilation frame 6 can be closed by standing up the shielding plate 8, and the ventilation hole 3 can be opened by tilting the shielding plate 8, and when the shielding plate 8 is erected, the ventilation hole 3 of the ventilation frame 6 can be closed. The shielding plate body 8 is held in a closed state by a cylindrical fixed shaft 50 protruding from the fixed shaft 50 and a fixed piece 55 that engages with the fixed shaft 50. By inserting the through hole 36 that passes through the ventilation frame main body 2 in the inside and outside directions, the tip end portion 50a thereof protrudes to the outdoor side of the ventilation frame main body 2, and the protruding tip portion 50a has an engaging member. The stop groove portions 52, 52 are provided facing each other, and the width of the wedge portion 54 consisting of the opposing bottom surfaces 53, 53 is set from one end 54a to the other end 54.
The fixing piece 55 has a fixing shaft attached to one wide end 56a of the wedge-shaped through hole 56, which becomes narrower as the width of the wedge portion 54 changes. It has a keyhole-shaped locking hole 59 in which a circular arc-shaped through-hole 57 having a diameter slightly larger than that of the wedge-shaped through-hole 56 is connected.
By engaging with the wedge portion 54, the through hole 3
6. An underfloor ventilation device, characterized in that the underfloor ventilation device is adapted to come into contact with the outdoor peripheral portion of No. 6.