JP2002005483A - Breather cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a breather cover that can be executed easily, and secures high breathing performance and many design options while the breathing cover of a breathing path terminal part that can be executed by operation from a wall surface side opposite to an outer wall surface to be executed. SOLUTION: A breather cover 10 that can be installed from the inside of a building is provided so that a breather 2 being formed on a wall body 3 of the building can be covered. The breather cover is provided with a rear base 12 that can come into contact with a surface 3a of the wall body after mounting, and an expandable/shrinkable cover body part 11 that is connected to the rear base. The cover body part is formed in a size for passing the breather when it shrinks, and for surrounding the periphery of an opening end 2a of the breather 2 that is open to the surface 3a while communicating with the breather when it is expanded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vent cover which can be attached to a vent formed on an outer wall of a building from the indoor.

[0002]

2. Description of the Related Art In general, work for installing a ventilation cover at a high place on an outer wall surface of a building is carried out from the outer wall side by assembling a scaffold. And
When building with a construction method that features the elimination of scaffolding, such as a unit-type prefabricated construction method, it is difficult to form a scaffold only to form a vent on the outer wall and install a vent cover there. Not a good idea in terms of cost.

[0003] Also, there is a case where there is no space for building a scaffold, as in the case where the distance between adjacent buildings is narrow, and construction is physically impossible from outside the buildings. Furthermore, even after the installation of the vent cover, even if maintenance from the outer wall surface can not be performed unless a scaffold or aerial work vehicle is used, if the vent cover can be removed from the inside of the building, It is desirable because maintenance such as cleaning and repair becomes easy.

[0004] Under the circumstances described above, there is an increasing demand for a technology that allows the vent cover to be attached and detached from inside a building, that is, from the indoor side.

[0005] In order to satisfy this demand, as means for allowing a vent cover to be constructed on the outer wall surface of a building to be constructed from the indoor side, there is, for example, a vent cover disclosed in JP-A-3-274335. This means binds a string or the like to the vent cover located outside the room, passes the string from the outside to the outside wall vent, and pulls the string from the indoor side, so that the vent cover attached to the string is placed inside the vent inside the room. It is to be attached to the duct member inserted from above.

[0006] Similarly, in order to satisfy the above-mentioned demand, the technology disclosed in Japanese Patent Application Laid-Open No. H10-197022 is disclosed in Japanese Patent Laid-Open Publication No. An elastic packing is provided on the cover in advance, and the vent cover is inserted into the vent from the room side, and when the elastic packing passes through the vent and goes out of the room, utilizing the restoring pressing force of the elastic packing. It is intended to protect the terminal portion of the vent and to ensure watertightness and airtightness.

Further, the vent cover shown in FIGS. 8 and 9 is also commercially available. 8 and 9, the vent cover 1 is provided with a building wall 3 having a vent 2 formed therein.
Opening 4b which has an abutment surface 4a which abuts on the outer surface 3a of the airbag 2 and which is arranged substantially concentrically with the vent 2 when the mounting is completed.
Base 4 having an opening 4
b, and a cover body 5 covering the front of the cover b. The cover body 5 has a box-like shape that can be inserted into the vent 2,
In addition, the back base 4 has a pair of wing-shaped portions 4c that make the size of the contact surface 4a variable.

In the vent cover 1 described above, the cover main body 5 is sized to fit within the diameter of the vent 2 when inserted from the room into the vent 2, and the back base is opened and closed by opening and closing the wing 4c. Since the contact surface dimensions of the rear base 4 are variable, the ventilation cover 1 closes the wings 4c when the ventilation cover 1 is inserted into the ventilation opening 2. And vent 2
Then, it is taken out of the room in the direction of the arrow while avoiding the interference with the wall surface (see FIG. 8), and then the wing portion 4c is opened and attached to the building wall 3 with the periphery of the ventilation hole 2 substantially sealed. (See FIG. 9).

[0009]

However, Japanese Patent Laid-Open Publication No. Hei 3-2
When the vent cover is pulled by a string as described in Japanese Patent No. 74335, there is a danger that the vent cover will collide with the outer wall surface in the course of the work, and the vent cover and the outer wall surface will be damaged. In addition, the work area where the strings are tied to the vent cover is often far away from the construction area, so if you need to work alone, you need to move between the places. Therefore, the working efficiency is significantly reduced.

Further, as disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 10-197022, an elastic packing having a larger diameter than the ventilation port is provided around the side of the ventilation port cover having a smaller diameter than the ventilation port to allow ventilation from the indoor side. In the technology of insertion into the mouth, the effective ventilation cross-sectional area of the ventilation hole cover is inevitably reduced, so that the pressure loss increases and the product has to be inferior in ventilation performance. In addition, in order to ensure the maximum ventilation cross-sectional area for the round vent, the exterior of the vent cover must be rounded to match the vent shape, and the range of options in external design is narrow. Become. Furthermore, since the amount of the cover cannot be so large, the performance of preventing rainwater intrusion cannot be greatly expected.

Further, a vent cover having a pair of wing-shaped portions provided on the side portion of the back base so as to be openable and closable is disclosed in Japanese Patent Application Laid-Open No. Hei.
Although the drawbacks of the vent cover described in Japanese Patent No. 274335 and Japanese Patent Application Laid-Open No. 10-197022 can be solved to some extent, the cover main body is returned to its original shape with the wings folded in the closed position. Since it must be large enough to pass through the inside of the vent, the cross-sectional area of the vent cover is about 40% to 50%, and at most about half of the cross-sectional area of the vent. Also, when pursuing an efficient vent cover shape to obtain higher ventilation performance within the above-described constraints, it follows the cross-sectional shape of the vent, for example, for a round vent, A semi-cylindrical cover is inevitable, which greatly restricts the design.

Accordingly, an object of the present invention is to provide the above-mentioned several prior arts which have (1) problems in work safety or quality, (2) poor work efficiency and workability, ( It is an object of the present invention to provide a vent cover that can comprehensively solve the problems of (3) poor ventilation performance, (4) narrow design options, and (5) insufficient rainwater intrusion prevention performance.

[0013]

According to the present invention, there is provided a vent which can be installed from the inside of a building so as to cover a vent formed in a wall of the building. The cover includes a back base that can abut one surface of the wall after installation, and a scalable cover body connected to the back base.
It is sized so as to be able to pass through the vent, and is sized to cover the periphery of the open end of the vent that opens to the one surface in communication with the vent when expanded.

The vent cover is composed of a cover body and a back base, and the cover body can be expanded and contracted so that the vent cover can pass through the vent. However, the mounting work can be performed easily and safely without damaging the product. In addition, by attaching the cover body in the expanded state, it is possible to ensure high ventilation performance. Furthermore, since the cover main body portion passes through the vent in the contracted state, and is subsequently constructed in an expanded state outside the vent, the design of the vent cover depends on the shape of each part constituting the cover main body and the arrangement of the joining form. A wide range of options can be provided, and a product that sufficiently covers the ventilation opening and has good rainwater intrusion prevention performance can be designed.

Further, according to the present invention described in claim 2,
When the cover main body is constituted by a plurality of expansion / contraction covers hinged to each other, the outer shape of the vent cover when passing through the vent in a reduced state can be reduced by that much, in other words, expansion This is very preferable because the ventilation cross section of the ventilation port cover in the state can be increased.

According to the third aspect of the present invention, it is advantageous in terms of manufacturing cost that at least one of the cover body and the rear base is partially or entirely made of an elastic material. Further, as in the present invention described in claim 4, the cover body may be formed of a plurality of expansion / contraction cover parts that are slidably coupled to each other.

Further, according to the present invention described in claim 5,
It is preferable that the vent cover is provided with a biasing means for urging the cover body in an expanded state. With this configuration, the cover main body can be displaced from the contracted state to the expanded state by the restoring force of the biasing means, so that the construction work of the worker is reduced.

Further, according to the present invention described in claim 6,
The plurality of expansion / contraction cover portions preferably have similar external shapes so that one can accommodate the other, and may form a louver in the expansion / contraction cover portion located below when installed on the wall. If the shape is similar, the volume of the cover body when reduced is minimized, and if the louver is formed, not only the aperture ratio will increase and the ventilation performance will improve, but also the design options will be further expanded. And further improvement of the rainwater intrusion prevention performance can be achieved.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts. FIG. 1 is a perspective view of a state in which a first embodiment of the present invention is passed through a vent,
FIG. 2 is a perspective view of the first embodiment of the present invention in the middle of being enlarged after passing through the vent, and FIG. 3 is a perspective view of the first embodiment of the present invention in an enlarged state and in contact with the outer wall surface. It is. FIG. 4 is a perspective view of a state in which the second embodiment of the present invention is passed through a vent, and FIG. 5 is a view in which the second embodiment of the present invention is passed through a vent to match the mounting direction on the outdoor side. FIG. 6 is a perspective view of a state in the middle of enlarging the second embodiment of the present invention. FIG. 7 is a perspective view illustrating a state where the vent cover of FIG. 6 is in an enlarged state and is in contact with an outer wall surface. Also,
As will be understood from the following description, the present invention is not limited to this embodiment, and various modifications are possible.

(Embodiment 1) FIGS. 1 to 3 show a first embodiment of a vent cover 10 according to the present invention in various states during the construction process. FIG. Vent cover 10 being inserted into open vent 2, FIG.
FIG. 3 shows the vent cover 10 passing through the vent 2 and expanding on the outdoor side, and FIG. 3 shows the vent cover 10 attached to the outer surface 3 a of the wall 3.

As best shown in FIG. 3, the vent cover 10 mainly comprises a cover body 11 and a back base 12.
The cover body 11 is provided with the vent cover 1.
Since the main part is mainly composed of the external appearance of No. 0, it may be referred to as an external structural member. The cover body 11 includes a pair of enlarged / reduced covers 11a and 11b that are substantially L-shaped as viewed from above in FIG. A certain expansion / contraction support portion 13 is swingably connected to each other. In the preferred embodiment, the connection of the expansion and contraction cover portions 11a and 11b is preferably performed by a hinge. The cover main body portion 11 and the back base 12 can be formed from an appropriate elastic material that enables low cost when the vent cover is within the legal restrictions.

The contact portion of the vent cover 10 contacting the outer surface 3a of the wall 3 is a back base 12,
Each of the expansion and contraction cover portions 11a and 11b is pivotally attached to the side of the rear base 12 at the tip of the L-shaped bottom. In the preferred embodiment, this pivoting is provided by a hinge pin assembly as shown at 13. In a preferred embodiment, the rear base 12 includes an upper central base portion 12a, a lower central base portion 12b, and a pair of expansion / contraction base portions 12c and 12d sandwiching them from right and left.
Each of d is hinged to the upper central base portion 12a and the lower central base portion 12b (see FIG. 2). In addition, as can be understood from FIG. 3, a ventilation opening 14 having a diameter substantially equal to the opening end 2 a of the ventilation opening 2 is formed in the rear base 12. Although not shown, a flexible or elastic packing such as rubber is preferably attached to the contact surface of the back base 12 that contacts the outer surface 3a of the wall 3.

In order to operate the vent cover 10 having the above-described configuration from the indoor side of the wall 3, operation means 15 is attached to each of the upper center base portion 12a and the lower center base portion 12b. ing. Each operation means 15
As shown in FIG. 2, in the embodiment, a movable section having a U-shaped cross section or a channel-shaped section is swingably or rotatably supported by a projection 16 extending from an outer surface (a surface abutting the outer wall surface 3a) of the central base portion. The rod 15a and the movable rod 1
5a, preferably with a fixing member 15b, which is preferably screwed and adjustably mounted. The fixing member 15b facilitates the operation of the vent cover 10, and also serves to fix the vent cover 10 installed at a predetermined position.

That is, the vent cover 10 can be securely fixed by, for example, screwing the fixing member 15b to an indoor member (not shown). At this time, the amount of protrusion of the fixing member 15b can be adjusted by changing the amount of screwing into the movable rod 15a, facilitating construction on different wall thicknesses. In addition, the movable rod 15a and the fixing member 15b also serve as holding means when the product is passed through the narrow ventilation port 2 in the work of installing the ventilation port cover 10, thereby facilitating operations such as positioning and orientation, and fixing. The member 15b also serves as a locking member,
It also helps prevent products from being dropped outdoors.

In FIGS. 2 and 3, a substantially triangular or trapezoidal member extending from the upper central base portion 12a toward the expansion / contraction cover portions 11a and 11b is an eave 17 covering the ventilation opening 14 of the back base 12. is there. This eaves body 17 is not limited to the shape and the mounting position shown in the drawing, and as long as it does not hinder the attachment / detachment and opening / closing of the vent cover 10.
For example, it can be made rectangular or attached to the expansion / contraction cover portion.

Next, a procedure for installing the above-described vent cover 10 to the vent 2 will be described. First, while rotating the expansion / contraction base portions 12c and 12d of the rear base 12 with respect to the central base portion, the L-shaped expansion / contraction cover portions 11a and 11b are combined in the room so as to form a substantially rectangular shape (see FIG. 1). The cover portions 11a and 11b are rotated along the expansion / contraction support portion 13 to close and contract. Then, the movable rod 15a is rotated in the state shown in FIG. 1 so that the enlarged / reduced cover portions 11a and 11b reduced in the shape of B become parallel to the operation means 15.

The vent cover 10 can pass through the vent 2 in this bended shape, and passes through the vent 2 as shown by an arrow in FIG. 1 and the whole vent as shown in FIG. 2, by operating the operating means 15, the eaves 17 are rotated so as to be positioned upward, and the fixing member of the operating means 15 is pressed while pressing, for example, a bar-shaped auxiliary tool (not shown) against the expansion / contraction cover portion. 15b is pulled forward from the indoor side, and in conjunction therewith, the closed expansion / contraction base portion 12c,
12d is rotated in the opening direction with respect to the central base portion, and further in conjunction with this rotation, each of the expansion and contraction cover portions 11a and 11b is rotated and opened with respect to the expansion and contraction support portion 13 as indicated by an arrow in FIG.

As will be easily understood from this description, for example, a biasing means such as a spring is attached to the back base 12 in advance, and when the vent cover is expanded, the central base portions 12a and 12b and the expansion / contraction base portion are expanded. 12c, 1
If the vent 2d is biased so as to be aligned on one plane, when the vent cover 10 passes through the vent 2 in the contracted state and goes outside, the vent cover 10 is effectively automatically moved by the restoring force of the biasing means. Since it is opened in an expanded state, the labor of the worker is reduced.

When the expansion and contraction covers 11a and 11b are sufficiently opened, the above-mentioned assisting tool is removed and the operating means 1
By pulling the front side 5 forward, the backing base 12 of the vent cover 10 or, if a packing as described above is provided therein, causes the vent opening 14 to be substantially concentrically aligned with the vent 2. It is exactly pressed against the outer surface 3 a of the wall 3. Thereafter, the fixing of the fixing member 15b is screwed to a member on the indoor side (not shown), whereby the construction of the vent cover 10 is completed.

(Embodiment 2) Next, a second embodiment of the present invention will be briefly described with reference to FIGS. 4 to 6 in order to exemplify that the appearance and the like of the vent cover can be changed. . FIG.
6 to 6 show the second embodiment of the vent cover 20 according to the present invention in various states during the construction process. As in FIGS. 1 to 3, FIG. 4 shows the vent formed on the wall 3. The vent cover 20 being inserted into the mouth 2, FIG. 5 is a vent cover 20 in the middle of passing through the vent 2 to match the mounting direction on the outdoor side, and FIG. Cover 2
0 and FIG. 7 show the vent cover 20 attached to the outer surface 3a of the wall body 3, respectively.

As shown best in FIG. 6, the vent cover 20 comprises an upper cover body 22 and a lower cover body 23 rotatably connected to each other by pins (expansion and contraction support parts) 21.
And a first body is provided on each of the cover body portions 22 and 23.
The operating means 15 is attached similarly to the embodiment. The upper cover main body portion 22 is formed as a substantially triangular prism-shaped pentahedron, the front surface 22a is a curved surface, the left and right side surfaces 22b are substantially triangular, and the back surface 22c is a back base contacting the outer surface 3a of the wall body 3. The bottom surface is open and communicates with the lower cover main body 23. 4 and 6, a ventilation opening 24 is formed in the rear surface 22c so that the ventilation opening 24 can be aligned with the opening end 2a of the ventilation opening 2 when the rear surface 22c is installed on the wall 3. As shown in FIG.

On the other hand, the lower cover main body 23 is slightly smaller than the upper cover main body 22 and has a substantially similar shape so as to be accommodated in the upper cover main body 22 when the vent cover 20 is reduced. However, the curved front surface of the lower cover main body 23 is a louver 23a. Although not shown in the drawing, the top surface of the lower cover body 23 is open and communicates with the upper cover body 22, and the back has a back base contacting the outer surface 3 a of the wall 3. It has become.

Also in the second embodiment, the vent cover 20 is inserted into the vent 2 in a reduced state as shown in FIG. 4, and it is understood from FIG. As shown in FIG. 6, the lower cover main part 23 is again turned out of the upper cover main part 22 by operating the operation means 15 again. It is installed on the wall 3 as shown.

In the second embodiment, the upper cover main body 22 and the lower cover main body 23 are rotatably connected to each other by the pin 21, but the respective cover main bodies 22, 23 are slidably connected to each other. Although not shown, a long groove and a ridge fitted therein may be formed on both sides thereof.

While the preferred embodiment of the present invention has been described above, the present invention can be variously modified without departing from the spirit and scope as described above. For example, the expansion and contraction support portion between the expansion and contraction cover portions may be formed as a separate component from the expansion and contraction cover portion, or the expansion and contraction cover portions may be directly hinged together. The term "hinge connection" as used herein is a generic term for a function that enables rotation between members. Those that adopt the hinge, shaft support, concave / convex engagement, screwing, riveting, and the like to obtain the same function are not available. Within the same concept. Further, it also includes providing a flexible material such as a spring material, a rubber material, and a cloth material between the members to obtain a rotation operation.

[0036]

As described above, according to the first aspect of the present invention, the vent cover that can be installed from inside the building so as to cover the vent formed in the wall of the building is provided. A back base that can later come into contact with one surface of the wall, and a scalable cover body connected to the back base, wherein the cover body is large enough to pass through the vent when it is reduced. When expanded, it is formed to have a size that communicates with the vent and covers the periphery of the open end of the vent that opens to the one surface. In this manner, the vent cover is composed of the cover body and the back base, and the cover body is expandable and contractable so that the vent cover can pass through the vent. However, the mounting operation can be performed easily and safely without damaging the product. Further, by attaching the cover body in the expanded state, the ventilation cross-sectional area is almost doubled as compared with the conventional example shown in FIGS. 8 to 9, so that high ventilation performance can be ensured. Furthermore, since the cover body passes through the vent in a contracted state, and is then constructed in an expanded state outside the vent, the design of the vent cover depends on the arrangement of the parts constituting the cover body and the arrangement of the joining forms. It is possible to provide a product that has sufficient rainwater intrusion prevention performance that sufficiently covers the ventilation opening.

Accordingly, the present invention provides (1) a problem in work safety or quality, (2) poor work efficiency and construction convenience, (3) poor ventilation performance, and (4) design. It is possible to provide a vent cover that can comprehensively solve the problems of the prior art that the range of options is narrow and (5) the performance of preventing rainwater intrusion cannot be sufficiently ensured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a first embodiment of the present invention is passed through a vent.

FIG. 2 is a perspective view showing a state in which the first embodiment of the present invention is enlarged after passing through a vent.

FIG. 3 is a perspective view of the first embodiment of the present invention in an enlarged state and in contact with an outer wall surface.

FIG. 4 is a perspective view showing a state in which a second embodiment of the present invention is passed through a vent.

FIG. 5 is a perspective view of the second embodiment of the present invention in a state in which the mounting directions are matched after passing through a vent.

FIG. 6 is a perspective view showing a state in which a second embodiment of the present invention is enlarged.

FIG. 7 is a perspective view of a second embodiment of the present invention in an enlarged state and in contact with an outer wall surface.

FIG. 8 is a perspective view of a conventional example when passing through a vent.

FIG. 9 is a perspective view of the construction state of FIG. 8;

[Explanation of symbols]

 2 ... vent 3 ... wall 3a ... outer surface or one surface 10 ... vent cover 11 ... cover body 11a, 11b ... expansion and contraction cover 12 ... back base 20 ... vent cover 22, 23 ... cover body 23a ... louver

Claims (6)

[Claims] 1. A vent cover that can be installed from the inside of a building so as to cover a vent formed in a wall of the building, and a back base that can abut one surface of the wall after the installation. An expandable / reducible cover main body connected to the back base, the cover main body is sized to be able to pass through the vent when reduced, and communicates with the vent when expanded, A vent cover formed to have a size to cover a periphery of an opening end of the vent opening on the one surface. 2. The vent cover according to claim 1, wherein the cover body comprises a plurality of expansion / contraction cover parts hinged to each other. 3. The vent cover according to claim 1, wherein a part or all of at least one of the cover main body and the back base is formed of an elastic material. 4. The vent cover according to claim 1, wherein the cover main body comprises a plurality of expansion / contraction cover parts slidably coupled to each other. 5. The apparatus according to claim 1, further comprising a biasing means for urging the cover body in an expanded state in a regular manner, wherein the cover body is displaced from a reduced state to an expanded state by a restoring force of the biasing means. 5. The vent cover according to any one of 4. 6. The plurality of expansion / contraction cover portions have similar external shapes so that one can accommodate the other in one of the expansion / contraction cover portions, and a louver is attached to the expansion / contraction cover portion located below when installed on the wall body. The vent cover according to claim 4, which is formed.