JPH0141069Y2 - - 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 device that can regulate the inflow of outside air into a room, improve livability, exhibit an energy saving effect, and can be manufactured at low cost with a simple structure.

(Background of the invention and conventional technology) In recent years, as shown in Fig. 9, all rooms a...
Air circulation type buildings surrounded by a communicating air layer b are attracting attention. Roughly speaking, the 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 and flowed throughout the spaces c, d, and e of the building to store cold energy, and during the day, the hot air is exhausted and the 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. As well as storing it throughout,
At night, the room a is heated by dissipating the stored heat, and the air layer b (i.e., the heat insulating layer) in a stationary state ensures 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 that include a shielding plate that closes ventilation holes, the shielding plate is composed of a single plate as disclosed in, for example, Japanese Utility Model Publication No. 17035/1983.

(Problem to be solved by the invention) In this way, in the case of conventional underfloor ventilation systems, the shielding plate was composed of a single plate, so the prevention of heat radiation from the ventilation holes by the shielding plate was extremely insufficient. Therefore, it was not possible to fully utilize the characteristics of the air circulation type building described above.

(Means for Solving the Problems) The present invention has been made mainly in view of the above problems, and provides an underfloor ventilation system configured as follows.

That is, the underfloor ventilation system of the present invention consists of a ventilation frame 6 which covers the ventilation holes 3 of a synthetic resin ventilation frame main body 2 with a partition member 5 for preventing the intrusion of small animals, and a front side wall facing each other at a predetermined distance. Surface portion 41, rear wall surface portion 4
a synthetic resin shielding plate 8 having a double wall structure in which the peripheral edges of the ventilation frame main body 2 are continuous and integrated; The shielding plate 8 can be raised up and down by a cord 9 that is attached to the shielding plate 8 at one end and is attached to the shielding plate 8 at one end through a synthetic resin hinge 10. The ventilation hole 3 of the ventilation frame 6 can be closed by standing up, and the ventilation hole 3 can be opened by tilting. A protrusion 49 having an abutment surface 47 that can come into contact with the stepped surface 27 is provided, and the upper portion 4 of the protrusion 49 is provided.
9a or appropriate portions of both side portions 49b and 49b are elastically engaged with a hook-shaped engaging portion 35 that is a part of the stepped surface 27 and is formed such that the stepped surface 27 is inclined inward. In addition, the front wall surface portion 41 is provided with a pressing rod portion 55 through which the through hole 40 penetrating the upper frame portion 39 or the side frame portion 63 of the ventilation frame body 6 can be inserted. It is characterized by

(Function) However, as shown in FIGS. 3 and 7, when the ventilation device 1 of the present invention is fitted and fixed into the opening formed between the notch provided in the cloth foundation g and the foundation i, By tilting the shielding plate 8, outside air can be introduced into the underfloor area, allowing 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 wall, extremely excellent heat insulating properties can be secured due to the sealed air layer, and furthermore, the step surface 27 and the contact surface 47 are in contact with each other in the closed state. Since the ventilation hole 3 portion can be connected to the ventilation hole 3, heat radiation from the ventilation hole 3 portion can be reliably prevented.

In addition, by pulling the string 9, the shielding plate 8 is raised, and the hook-shaped engaging portion 35 and the engaging protrusion 53 are elastically engaged, so that the shielding plate 8 is closed. It can be maintained in a state. Conversely, to open the ventilation hole 3, press the tip 58 of the pressing rod part 55 with your fingertip to open the hook-shaped engaging part 3.
5 and the engagement protrusion 53, and the shielding plate body 8
can be tilted using its own weight.

(Example) Next, an example of the present invention will be described based on the drawings.

In Figures 1 to 3, the underfloor ventilation system 1 of the present invention is shown.
A shielding plate body 8 capable of closing the ventilation hole 3 is integrally attached to a ventilation frame body 6 formed by covering the ventilation hole 3 of the ventilation frame main body 2 with a partition member 5 via a hinge part 10, and the shielding plate The body 8 can be pulled up using a string 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 an upper surface 12, a lower surface 13 that is a horizontal surface, and both side surfaces 15, A hollow collar part 17 whose numeral 16 is a vertical surface is provided in series, and a hollow drain part 20 which protrudes forward and whose upper surface 19 slopes gently diagonally downward is provided in series on the lower edge of the outdoor side (front side). . Note that the lower upper surface 22 of the hollow rectangular frame portion 11 is also inclined substantially parallel to the upper surface 19 of the hollow drain portion 20 for the purpose of draining water. Also, the rear part 23 of the ventilation frame main body 2
As shown in Fig. 2, the vertical plane 2 of both side edge parts is
4, 24 and the vertical plane 25 of the upper edge portion and the lower edge portion,
26, and the continuous vertical surfaces 24, 24,
25 and 26 are provided with a continuous vertical circumferential surface 29 via a step surface 27, and the vertical circumferential surface 29
A continuous vertical circumferential surface 31 is disposed in series with a step 30 interposed therebetween. Upper portion 27 of the stepped surface 27
As shown in an enlarged view in FIG. 4, a is an engagement step surface 33 that slopes inward such that the distal end 31 is located inside the base end 32, and the engagement step surface 33 portion is A hook-shaped engaging portion 35 is formed. Then, by attaching the peripheral edge portion 37 of the partition member 5 made of a synthetic resin plate having a large number of ventilation windows 36 to the recess 38 formed by the step 30 and the vertical peripheral surface 31, the ventilation frame 6 is installed. Can be configured. The partition member 5 is installed 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 plate, the partition member 5 can be formed as a net, a gagarari, etc., and is mainly used as a ventilation frame. 2 may be integrally molded. In addition, a through hole 40 is provided at the center of the upper frame portion 39 of the main body 2 of the ventilation frame, passing through the front and rear surfaces, and as shown in an enlarged view in FIG. A locking recess 44 for locking the string 9 is connected to the portion (lower portion in this embodiment).

The shielding plate body 8 has a flat rectangular plate shape made of hard synthetic resin, in which the peripheral edges of a front wall surface 41 and a rear wall surface 42 that face each other with an interval are continuously integrated and have an air layer inside. , front wall section 41
One side edge, that is, the lower edge portion 43 of the shielding plate body 8,
Over its entire length, at the lower edge portion (a slightly lower portion of the upper edge 26a of the vertical surface 26) 45 of the ventilation frame main body 2,
They are integrally attached via the hinge portion 10 made of thin hard synthetic resin or soft synthetic resin so as to be able to freely rise and fall. Further, a protrusion 49 having an abutting surface 47 that can come into contact with the stepped surface 27 is provided around the front wall portion 41 near the periphery 46 and slightly spaced from the periphery 46 . Therefore, by raising the shielding plate body 8,
As shown in FIG. 3, the abutment surface 47 and top surface 50 of the protrusion 49 abut the stepped surface 27 and the vertical surface 29, respectively, and the peripheral edge portion 51 of the front wall surface 41 contacts the vertical surfaces 24, 24, The shielding plate body 8 closes the ventilation hole 3 while being in close contact with the shielding plate body 8, and opens the ventilation hole 3 by tilting the shielding plate body 8. Further, the entire upper part of the corresponding contact surface 47 is an engagement contact surface 52 that comes into contact with the engagement step surface 33, and the engagement contact surface 52 portion is in contact with the hook-shaped engagement portion 35. This becomes an engaging protrusion 53 that can be engaged. Furthermore, the through hole 4 is located in the center of the front wall surface portion 41 near the upper edge.
0 is inserted and the tip side portion 55a is the ventilation frame main body 2.
A cylindrical pressing rod portion 55 protruding from the front surface 56 of the upper frame portion 39 is attached to the pedestal 5 provided on the front wall surface portion 41.
It is fixed to 7. Note that the protruding length of the pressing rod portion 55 may be set such that its tip 58 is flush with the front surface 56 of the upper frame portion. The pressing rod part 5
One end 9a of the string 9 used to raise the shielding plate 8 is attached to a through hole 59 passing through the opposing notch of the distal end portion 55a of the shield plate 8.
The other end 9b of the string 9 is guided to the outside through the through hole 40. Therefore, by pulling the string 9, the shielding plate 8 is raised, and the hook-shaped engaging portion 35 and the engaging protrusion 53 are elastically engaged, thereby raising the shielding plate 8. It can be held in an occluded state. Conversely, in order to open the ventilation hole 3, by pressing the tip 58 of the pressing rod part 55 with a fingertip, the hook-shaped engaging part 35 and the engaging protrusion 53 are disengaged, and the shielding plate is opened. The body 8 can be tilted using its own weight. As shown in FIGS. 2 and 3, the shield plate body 8 maintains a substantially horizontal state with its lower end surface 60 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. In this embodiment, the string 9 connects the spherical bodies 54a and 54a to each other using a connecting pin 54.
As shown in FIG. 6, the connecting pin 54b is fitted into the engaging recess 44, and the spherical body 54a and the front surface 56 of the upper frame 39 are in contact By doing so, the string body 9 when the shielding plate body 8 is inverted
By fitting the appropriate connecting pin 54b into the engagement recess 44, it is also possible to hold the shielding plate body 8 at a desired inclination angle. Furthermore, when the cord 9 is made of flexible synthetic resin, the same effect as described above can be expected by press-fitting an appropriate portion of the cord 9 into the engagement recess 44.

In FIG. 7, an elastic airtight material 62 such as polyurethane is fitted into a groove 61 provided around the peripheral edge portion 46a of the front wall 41 so as to protrude slightly from the front wall 41, as shown by the dashed line in the figure. The case is shown in which it is bonded and fixed, and when configured in this way, when the ventilation hole 3 is closed by the shielding plate 8, the elastic airtight material 62 is compressed and the vertical surface 24,
24, 25, and 26, and the airtightness of the ventilation hole 3 portion can be further improved.

Note that the hook-shaped engaging portion 35 and the hook-shaped engaging portion 35
The engagement protrusion 53 that elastically engages with the stepped surface 27
In addition to being provided over the entire upper portions 27a, 49a and both side portions 27b, 27b, 49b, 49b of the protruding portions and protrusions 49, for example, as shown in FIG. ), the step surface 27 portion and the protrusion 49,
Upper portion 27a, 49a or both side portions 27
b, 47b may be partially provided at appropriate locations.
Also, as shown in part in FIG. 8, the pressing rod part 55
are located on both sides of the front wall surface portion 41, and
Attach one end of the string 9 to the center of the front wall section 41,
Or it may be the other way around. In addition, the pressing rod part 55
When the ventilation holes 40 are located on both sides of the front wall surface portion 41, the through holes 40 may be provided in the side frame portions 63 of the ventilation frame body 6.

In the underfloor ventilation system of the present invention, the string 9 used to raise the shielding plate 8 is a concept that includes strings and similar materials. Further, the inside of the shielding plate body 8 and the inside of the ventilation frame main body 2 may be filled with foamed synthetic resin for the purpose of improving rigidity.

(Effects of the invention) As a result of the underfloor ventilation system of the present invention being constructed as described above, the shielding plate 8 that closes the ventilation hole 3 of the ventilation frame 6 can be used as a double-walled sealed body containing an air layer. Because of this, it is possible to ensure extremely excellent heat insulation mainly due to the sealed air layer, and moreover, in the closed state, the step surface 27 provided on the ventilation frame 6 and the shielding plate 8 can be Since the protrusions 49 can come into contact with each other, heat radiation from the ventilation hole 3 portion can be reliably prevented, and the heating effect in buildings in cold regions can be enhanced. Therefore, the underfloor ventilation system 1 of the present invention can be particularly suitably employed in an air circulation type building as shown in FIG.

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 cord 9 is used to open and close the shielding plate 8, and the hook-shaped engaging portion 35 of the ventilation frame main body 2 and the engaging protrusion 53 of the shielding plate 8 are elastically engaged. Since the shielding plate body 8 can be held in its closed state, the opening/closing mechanism is extremely 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. FIG. 4 is a cross-sectional view explaining the fixed state of the shielding plate body in the upright state, and FIG.
The figure is an enlarged perspective view showing the through hole and the locking recess, and FIG. 6 is a cross-sectional view illustrating the state in which the string is held.
Fig. 7 is a cross-sectional view showing the main parts of the shielding plate to which the elastic airtight material is attached, together with its functions, Fig. 8 is a partial perspective view showing another example of the shielding plate, and Fig. 9 shows the underfloor ventilation system. It is an explanatory view explaining an attached air circulation type building. DESCRIPTION OF SYMBOLS 1... Underfloor ventilation device, 2... Ventilation frame main body, 3... Ventilation hole, 5... Partition member, 6... Ventilation frame body, 8... Shield plate body, 9... String body, 10... Hinge part, 27... Step surface, 3
5...Hook-shaped engagement portion, 41...Front side wall surface portion, 42...Rear side wall surface portion, 43...Lower edge portion of shielding plate body, 45...Lower edge portion of ventilation frame main body, 47...Abutment surface, 49...Protrusion ,
53... Engaging protrusion, 55... Pressing rod.

Claims (1)

[Scope of utility model registration request] A ventilation frame body 6 comprising a ventilation hole 3 of a synthetic resin ventilation frame main body 2 covered with a partition member 5 for preventing the intrusion of small animals, and a front wall surface portion 4 facing at a predetermined distance.
1. A synthetic resin shielding plate 8 having a double wall structure in which the peripheral edge of the rear wall surface 42 is continuous and integrated, and the lower edge 43 of the shielding plate 8 is placed under the ventilation frame main body 2. It is integrally attached to the edge portion 45 via a hinge part 10 made of synthetic resin so that it can be raised and lowered freely, and the shielding plate 8 can be raised by a string 9 whose one end is attached to the shielding plate 8. Shielding plate body 8
The ventilation hole 3 of the ventilation frame 6 can be closed by standing up, and the ventilation hole 3 can be opened by tilting it. A protrusion 49 having an abutment surface 47 that can come into contact with the step surface 27 provided is provided, and an upper portion 49a or both side portions 49 of the protrusion 49 is provided.
b, 49b, an engaging protrusion capable of elastically engaging a hook-shaped engaging portion 35 that is a part of the stepped surface 27 and is formed so that the stepped surface 27 is inclined inward. 53, and the side wall surface portion 41 is further provided with a pressing rod portion 55 through which the through hole 40 penetrating the upper frame portion 39 or the side frame portion 63 of the ventilation frame 6 can be inserted. Ventilation equipment.