JPS6325479Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a noise-reducing ventilation casing that is attached to the outdoor part of a ventilation opening that ventilates the indoor and outdoor areas of a building to achieve a noise-reducing effect.

Outdoor silencers that are installed in general houses, etc. to prevent outside noise from entering directly are generally formed with a rectangular cylindrical casing, and this casing is made by connecting plates with screws, etc. The disadvantage is that it requires a lot of effort to assemble. Moreover, since the device is installed outdoors, the fixing screws and the like are exposed to the outside, which is a drawback that impairs the appearance.

The present invention has been developed in view of the above points, and it forms a silencer with a casing made of a shaped material, and also allows for easy assembly of the casing. The present invention proposes a noise-reducing ventilation casing that also has a good appearance in which screws and the like are not exposed to the outside.

An embodiment of the present invention shown in the drawings will be described in detail below. Figure 1 is a plan view of the silencing ventilation case, Figure 2 is a rear view, Figure 3 is a sectional view taken along line A-A in Figure 1, and Figure 4 is a cross-sectional view taken along line A-A in Figure 1.
The drawings are an enlarged view of the section BB in FIG. 1, FIG. 5 is an enlarged sectional view taken along the line CC in FIG. 2, and FIG. 6 is an exploded perspective view.

In each of the above figures, the silencing ventilation casing of this embodiment is attached to the outdoor part of a ventilation opening 20 for ventilation between indoors and outdoors, and has a cylindrical body 1 formed of a molded material.
A and side plates 3, 3, which are attached to both sides and are also made of a shaped material, are combined to form a structure. In the embodiment, the cylindrical main body 1A includes a main body 1 with openings on both sides and the back and a U-shaped cross section, and a back plate 2 in the shape of a plate that substantially matches the shape of the back opening of the main body 1. and are each made of a molded material, and are constructed by combining them. However, the cylindrical body having the ventilation channels in the longitudinal direction can also be formed directly from the molded material.

The main body 1 constituting the cylindrical main body 1A is provided with locking grooves 4, 4 facing upward and downward on the outdoor side, and opening edge pieces 7, 7 facing upward and downward on the indoor side edge. . The upper and lower ends of the opening edge pieces 7, 7 are respectively bent indoors to form a bent portion 7.
a, 7b, and the bent portions 7a, 7b are brought into contact with the building wall surface as shown in FIG.
It is designed to form a In addition, on one side of the lower surface of the main body 1, there is an outdoor ventilation port 1 consisting of a plurality of openings.
2 is formed. The vent hole 12 is formed by punching or notching the main body 1 after molding it with a mold material.

On the other hand, the other back plate 2 constituting the cylindrical body 1A is provided with a receiving groove 9 for supporting the opening edge piece 7 of the main body 1 in the lateral direction at the upper inner side, and screw holes 8a, 8a are provided at both ends, respectively. At the same time, U-shaped notch holes 8b, 8b are provided at the upper end edge corresponding to the through holes 7c, 7c bored in the opening edge piece 7 of the main body 1. Further, after molding with a mold material, an indoor vent hole 11 is bored at an appropriate position at the side end.

As shown in FIG. 5, the main body 1 and the back plate 2, which are formed using a molded material as described above, are brought into contact with each other at their back parts,
By inserting the upper opening edge piece 7 of the main body 1 into the receiving groove 9 of the back plate 2, the main body 1 and the back plate 2 are combined and linked to form a cylindrical main body 1A having an air passage 10 and vent holes 11, 12. Assemble. At this time, the upper and lower ends of the back plate 2 are accommodated inside the opening edge pieces 7, 7 of the main body 1, respectively.

Next, the side plates 3, 3 attached to both sides of the cylinder body 1A are plate bodies having a shape that approximately matches the side opening shape of the cylinder body 1A, and correspond to the locking grooves 4, 4 on the outdoor side. A wedge portion 5 in the shape of an arrowhead is provided protrudingly, and fastening pieces 6 corresponding to both ends of the back plate 2 are provided on the indoor side. This side plate 3,3
are attached to both sides of the cylindrical main body 1A assembled with the main body 1 and the back plate 2 by press-fitting the wedge parts 5 into the locking grooves 4, 4. As shown in FIG. 4, this wedge portion 5 is formed by a plurality of tapered arrowheads connected in series, and the groove width of the locking groove 4 is formed to be slightly smaller than the arrowhead width. Therefore, the wedge portion 5 press-fitted into the locking groove 4 bites and locks into the inner wall surface of the groove, thereby firmly attaching and assembling the side plate 3 to the cylinder body 1A. The shape of the wedge portion 5 may be any shape other than an arrowhead shape as long as it can be locked in the groove.
Further, the wedge portion 5 may be constructed of two pieces, an upper and a lower portion, by cutting out the middle portion, without making the wedge portion 5 continuous in the longitudinal direction. Similarly, the fastening piece 6 can also be composed of two pieces, an upper and a lower piece.

After the wedge portion 5 is press-fitted into the locking grooves 4, 4,
Screws 6a, 6a are screwed into the rear plate 2 through the fastening piece 6 located on the indoor side of the rear plate 2. The screws 6a are screwed into the screw holes 8a in the rear plate 2 through the fastening piece 6. These screws 6a are attached to the rear surface of the tube body 1 and are not exposed to the outside. In addition, the bent portions 7a, 7b of the opening edge piece 7 form a space 21 between them and the building wall surface, so the screws 6a
The screw 6a is located in the space 21 and is prevented from contacting the wall surface.
Alternatively, screws, rivets, etc. may be used. Furthermore, the main body 1 and the rear panel 2 may be fixed to each other at their rear portions by fasteners.

By attaching the side plates 3, 3 to the side surfaces of the cylindrical main body 1A consisting of the main body 1 and the back plate 2 as described above, a casing having the ventilation passage 10 formed therein is assembled. At this time, the through hole 7c of the opening edge piece 7 of the main body 1 and the notch hole 8b of the back plate 2 face each other at corresponding positions, so by driving fixing screws into the outside wall of the building through these holes, the housing can be fixed. The body can be firmly attached to the wall.

In the embodiment, a partition wall 13 is provided on the inner surface of the back plate 2 in the lateral direction, so that the ventilation passage 10 is separated into two stages, upper and lower, and a folded opening 13a is provided at the end of the partition wall 13. In particular, the ventilation passage 10 is formed from two layers, an upper chamber and a lower chamber, which connect to each other. By forming the ventilation path 10 in two layers in this way, the indoor air enters the upper ventilation path 10 from the indoor side ventilation port 11, flows to the longitudinal end, and turns around, as shown in FIG. Mouth 13
The water changes direction at a point a, enters the lower ventilation passage 10, flows further in the longitudinal direction, and flows out through the outdoor ventilation opening 12. By making the ventilation path 10 have a two-layer reciprocating structure in this manner, outdoor noise that has entered the housing is also diffused while reciprocating through the ventilation path 10, making it possible to further enhance the noise reduction effect. Motomo ventilation path 1
0 may be formed in a single layer, and in this case, the indoor vent 11 and the outdoor vent 12 are formed on opposite sides in the longitudinal direction of the housing. Further, the outdoor ventilation port 12 may be formed by providing an arbitrary cover or the like on one side plate 3 without providing it in the main body 1.

Furthermore, in the embodiment, a sound deadening material 14 made of urethane, foam, etc. is attached to the entire inner peripheral surface of the upper chamber of the ventilation passage 10 to absorb outdoor noise and further enhance the sound deadening effect. It's like this. Moreover, a sound deadening material can also be provided in the lower chamber.

The cylinder main body 1A and the side plate 3 described above are formed by extrusion molding of an aluminum material, an aluminum alloy material, or the like. By forming the mold material, manufacturing can be further simplified.

A cylindrical insertion pipe 15 is provided protruding from the above-mentioned indoor ventilation port 11, and is inserted into a ventilation port 20 formed through the wall as shown in FIGS. 1 and 5. be. The insertion tube 15 allows the housing and the vent 20 to be more closely and firmly connected. A sound deadening material 14 is also attached to the inner peripheral surface of this insertion tube 15, and a ring-shaped airtight material 1 is attached to the outer peripheral surface.
6 is fitted, and the fitting and installation into the ventilation opening 20 is performed while maintaining airtightness.

As shown in FIGS. 5 and 6, a concave groove 13b is provided at the tip of the partition wall 13, and a packing 13c is provided in this groove so that the partition wall 13 and the inner wall of the main body 1 can be connected airtightly. It is set as.

As described above, the noise-reducing ventilation casing of the present invention consists of a cylinder main body and a side plate that constitute the casing, which are made of molded material, and the wedge part of the side plate is press-fitted into the locking groove of the cylinder main body, and the side plate is press-fitted into the locking groove of the cylinder main body. Since the fixing piece of the face plate is fixed to the back surface of the cylinder body, the outdoor side can be connected with one touch, and the assembly can be made extremely simple. Moreover, as the wedge part is press-fitted as described above, and the fixing piece of the side plate is fixed to the back of the cylinder body, the fixing screws etc. are not exposed to the outside and can be installed outdoors. It is possible to maintain a good appearance as a casing.

[Brief explanation of drawings]

Figure 1 is a plan view of the silencing ventilation housing, Figure 2 is a rear view, Figure 3 is a sectional view taken along line A-A in Figure 1, Figure 4 is an enlarged view of section B-B in Figure 1, and Figure 4 is an enlarged view of section B-B in Figure 1. FIG. 5 is an enlarged sectional view taken along the line CC in FIG. 2, and FIG. 6 is an exploded perspective view. 1A...Cylinder body, 1...Main body, 2...Back plate,
3... Side plate, 4... Locking groove, 5... Wedge part,
6...Fixing piece, 7...Opening edge piece, 9...Receiving groove, 1
0...Vent passage, 11,12...Vent hole, 13...
Bulkhead, 14... Sound deadening material.

Claims (1)

[Scope of claim for utility model registration] A noise-reducing ventilation casing that meets the following requirements and is installed in the outdoor part of a ventilation opening that provides ventilation between indoors and outdoors. (a) The casing is composed of a cylinder body having an air passage and a vent formed by one or more molded materials, and side plates attached to both sides of the cylinder body and also formed from molded materials. (b) A locking groove is provided inside the cylinder body on the outdoor side, and a wedge portion corresponding to the locking groove is provided on the outside side of the side plate, and the wedge portion is connected to the locking groove. It is press-fitted into the stop groove. (c) A fastening piece corresponding to the rear edge of the cylinder body is provided on the indoor side of the side plate, and this fastening piece and the rear edge of the cylinder body are fixed with a fastener. It becomes.