Partition wall

Abstract

To provide a partition wall capable of achieving both of sound insulation performance and ventilation performance between both side rooms of the partition wall, while suppressing mutual adverse effects between the partition wall and the rooms.SOLUTION: A partition wall has a first wall panel which partitions a space in a building into a first room and a second room, is provided to face the first room and has a first opening, a second wall panel which faces the second room and is provided with a space to the first wall panel and has a second opening, a duct which connects the first opening to the second opening and forms a ventilation passage sectioned from the space between the first wall panel and the second wall panel, and a sound absorption material provided between the first wall panel and the second wall panel.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a partition wall installed in a room of a building. [Background technology]

[0002] In a typical building such as a house, the interior space is divided into multiple rooms by doors and partition walls, and ventilation between the divided spaces is ensured.

[0003] For example, in the partition walls described in Patent Documents 1 and 2, ventilation between the rooms on both sides of the partition wall is achieved through the interior of the partition wall. Specifically, the partition walls described in Patent Documents 1 and 2 have a front wall panel and a back wall panel, and openings are formed in both panels. In these partition walls, ventilation is achieved between the openings in both panels, i.e., through the space within the partition wall. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-144881 [Patent Document 2] Japanese Patent Publication No. 2020-176472 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the partition walls described in Patent Documents 1 and 2 have the problem that the two rooms are connected through the opening and the space inside the partition wall, which results in a large amount of sound being transmitted between the two rooms.

[0006] Furthermore, in the partition walls described in Patent Documents 1 and 2, the openings in both panels communicate with the space inside the partition wall, which can have adverse effects such as high humidity air or foreign matter entering the partition wall from the room through the openings, or chemical substances generated inside the partition wall being released into the room.

[0007] The present invention has been made in consideration of such problems, and aims to provide a partition wall that can achieve both sound insulation and ventilation performance between the rooms on either side of the partition wall while suppressing mutual adverse effects between the partition wall and the rooms. [Means for solving the problem]

[0008] As a result of extensive investigations, the present inventors have found that the above object can be achieved by the following invention.

[0009] A partition wall according to one aspect of the present invention is a partition wall that divides a space in a building into a first room and a second room, and includes a first wall panel that is provided facing the first room and has a first opening, a second wall panel that is provided facing the second room and spaced apart from the first wall panel and has a second opening, and a partition wall that connects the first opening and the second opening and allows air to pass through the space between the first wall panel and the second wall panel. In the height and width directions A duct forming a partitioned ventilation path and a space between the first wall panel and the second wall panel. In the duct, facing the air passage and a sound-absorbing material provided in the

[0010] In the above-mentioned partition wall, ventilation performance between the first and second rooms separated by the partition wall can be ensured through the air passage formed by the duct connecting the first opening and the second opening. Furthermore, the sound-absorbing material provided between the first wall panel and the second wall panel absorbs noise transmitted between the first and second rooms as the air passes through the air passage, so that sound insulation performance can be ensured while ensuring ventilation performance.

[0011] Furthermore, in the above-mentioned partition wall, the duct separates the air passage from the space between the first wall panel and the second wall panel, which can prevent mutual adverse effects from occurring between the space within the partition wall and the first and second rooms.

[0013] Also , noise can be absorbed as the air passes through the ventilation channel.

[0014] The partition wall may further include a support mechanism provided between the first wall panel and the second wall panel for supporting the first wall panel and the second wall panel, and the duct may include a duct body having the air passage and a fixing portion for fixing the duct body to the support mechanism while the duct body is connected to the first opening and the second opening.

[0015] In this aspect, the duct body can be fixed to the support mechanism that supports both wall panels via the fixing portion, so that the duct body can be reliably fixed while being positioned relative to both openings.

[0016] A partition wall according to another aspect of the present invention is a partition wall that divides a space within a building into a first room and a second room, the partition wall comprising: a first wall panel that is provided to face the first room and has a first opening; a second wall panel that faces the second room and is provided at a distance from the first wall panel and has a second opening; a duct that connects the first opening and the second opening and forms an air passage that is partitioned from a space between the first wall panel and the second wall panel; sound-absorbing material provided between the first wall panel and the second wall panel; and a support mechanism that is provided between the first wall panel and the second wall panel and that supports the first wall panel and the second wall panel, wherein the duct comprises: a duct body that has the air passage; and a fixing portion that fixes the duct body to the support mechanism in a state in which the duct body is connected to the first opening and the second opening. The support mechanism has a first support plate portion that faces the first wall panel and supports the first wall panel from the inside, and the fixing portion is configured to be able to clamp the first support plate portion in the thickness direction of the partition wall between the fixing portion and an opening end of the duct body where the air passage opens in order to attach the duct body to the first support plate portion, and a notch facing the first opening is formed in the first support plate portion to connect the air passage in the duct body to the first opening. R .

[0017] In the above-mentioned partition wall, ventilation performance between the first and second rooms separated by the partition wall can be ensured through the air passage formed by the duct connecting the first opening and the second opening. Furthermore, the sound-absorbing material provided between the first wall panel and the second wall panel absorbs noise transmitted between the first and second rooms as the air passes through the air passage, so that sound insulation performance can be ensured while ensuring ventilation performance. Furthermore, in the above-mentioned partition wall, the duct separates the air passage from the space between the first wall panel and the second wall panel, which can prevent mutual adverse effects from occurring between the space within the partition wall and the first and second rooms. Furthermore, since the duct body can be fixed via the fixing portion to the support mechanism that supports both wall panels, the duct body can be reliably fixed while being positioned relative to both openings. moreoverThe duct can be easily fixed to the partition wall by sandwiching the first support plate, which supports the first wall panel from the inside, between the duct body and the fixing part. Furthermore, with the duct fixed to the first support plate, the ventilation passage and the first opening can be connected through the notch formed in the first support plate, so that both ventilation performance and secure fixation can be achieved.

[0018] In the above-mentioned partition wall, the support mechanism includes a plurality of studs and a runner that holds the upper or lower ends of the studs while arranging the studs along the surface direction of the partition wall, and the runner includes a base that is arranged along the upper or lower end surfaces of the studs, and a pair of side walls that extend from both ends of the base in the thickness direction of the partition wall in a direction perpendicular to the base, and the side walls may include the first support plate portion.

[0019] In this embodiment, by attaching a duct to the runner that holds the upper or lower end of the stud, ventilation can be achieved by utilizing the floor or ceiling side of the partition wall, which is relatively inconspicuous.

[0020] In the above partition wall, the thickness of the fixing portion may be substantially the same as the thickness of the first wall panel, and the fixing portion may be disposed inside the first opening.

[0021] In this embodiment, the surface of the fixing part facing the first room and the surface of the first wall panel facing the first room are positioned on approximately the same plane, making it easy to apply wallpaper across the first wall panel and the fixing part, or to attach decorative components such as baseboards or moldings.

[0022] Furthermore, a partition wall according to another aspect of the present invention is a partition wall that divides a space within a building into a first room and a second room, and includes: a first wall panel that is provided to face the first room and has a first opening; a second wall panel that faces the second room and is provided at a distance from the first wall panel and has a second opening; a duct that connects the first opening and the second opening and forms an air passage that is partitioned from a space between the first wall panel and the second wall panel; and a sound-absorbing material that is provided between the first wall panel and the second wall panel. The duct has an expandable portion that can expand and contract to change the length of the air passage. There are .

[0023] In the above-mentioned partition wall, ventilation performance between the first and second rooms separated by the partition wall can be ensured through the air passage formed by the duct connecting the first opening and the second opening. Furthermore, the sound-absorbing material provided between the first wall panel and the second wall panel absorbs noise transmitted between the first and second rooms as the air passes through the air passage, so that sound insulation performance can be ensured while ensuring ventilation performance. Furthermore, in the above-mentioned partition wall, the duct separates the air passage from the space between the first wall panel and the second wall panel, which can prevent mutual adverse effects from occurring between the space within the partition wall and the first and second rooms. Also The duct body can be extended or retracted depending on the thickness of the partition wall, so one type of duct can be used for partition walls of different thicknesses without having to prepare multiple types of ducts with different lengths of duct body.

[0024] In the above partition wall, the length of the air passage may be longer than the shortest distance between the first opening and the second opening.

[0025] In this embodiment, the air passage of the duct can be made longer, and the length of time over which the air passing through the duct comes into contact with the sound-absorbing material can be made longer, thereby further suppressing sound leakage. [Effects of the Invention]

[0026] According to the present invention, it is possible to provide a partition wall that can achieve both sound insulation performance and ventilation performance between rooms on either side of the partition wall while suppressing mutual adverse effects between the partition wall and the rooms. [Brief explanation of the drawings]

[0027] [Figure 1] FIG. 1 is a front view of a partition wall portion of a building according to a first embodiment. [Figure 2] FIG. 2 is an enlarged front view of the duct portion of FIG. 1 with the first wall panel 13 removed. [Figure 3] FIG. 3 is a partial cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is a partial cross-sectional side view of the duct. [Figure 5] FIG. 5 is a perspective view of the appearance of the duct. [Figure 6] FIG. 6 is a partially enlarged view of the side surface of the duct body on the first room side. [Figure 7] FIG. 7 is a cross-sectional view of a partition wall according to the second embodiment taken at a position corresponding to that shown in FIG. [Figure 8] FIG. 8 is a perspective view of the exterior of the decorative member, where FIG. 8(a) shows the state as seen from the room side, and FIG. 8(b) shows the state as seen from the partition wall side. [Figure 9] FIG. 9 is a side cross-sectional view of the decorative member. [Figure 10] FIG. 10 is a cross-sectional view of a partition wall according to a third embodiment taken at a position corresponding to that shown in FIG. [Figure 11] FIG. 11 is a cross-sectional view of a modified example of the expansion and contraction portion of the duct body. [Figure 12] FIG. 12 is a cross-sectional view of a modified example of the partition wall. [Figure 13] FIG. 13 is a schematic diagram of a modified example of the support mechanism, in which FIG. 13(a) is a partial side view of the stud, FIG. 13(b) is a plan view of the stud, and FIG. 13(c) is a perspective view of the appearance of the stud. [Figure 14] FIG. 14 is a cross-sectional view of a modified example of the duct. DETAILED DESCRIPTION OF THE INVENTION

[0028] (First embodiment) Hereinafter, a building and a partition wall according to a first embodiment of the present invention will be described with reference to the drawings.

[0029] (Building composition) Fig. 1 is a front view of a partition wall portion of a building according to this embodiment, and Fig. 2 is an enlarged front view of the duct portion of Fig. 1 with the first wall panel 13 removed. Fig. 3 is a partial cross-sectional view taken along line III-III in Fig. 1.

[0030] As shown in Fig. 1, the building 1 includes a floor 2, a ceiling 3, and a partition wall 10 extending between the floor 2 and the ceiling 3. As shown in Fig. 3, the partition wall 10 divides the space within the building 1 between the floor 2 and the ceiling 3 into a first room 4 and a second room 5.

[0031] (Partition wall configuration) The partition wall 10 has a support mechanism 15 extending across the floor 2 and the ceiling 3, a first wall panel 13 supported by the support mechanism 15 on the first room 4 side of the support mechanism 15, a second wall panel 14 supported by the support mechanism 15 on the second room 5 side of the support mechanism 15, a duct 20 extending across the first wall panel 13 and the second wall panel 14, and sound-absorbing material 23 provided between the first wall panel 13 and the second wall panel 14.

[0032] The support mechanism 15 has floor-side runners 15b extending along the floor 2, ceiling-side runners 15c extending parallel to the floor-side runners 15b along the ceiling 3, and a plurality of studs 15a extending from the floor-side runners 15b to the ceiling-side runners 15c. The floor-side runners 15b hold the lower ends of the studs 15a, and the ceiling-side runners 15c hold the upper ends of the studs 15a.

[0033] In the partition wall 10 of this embodiment, the studs 15a are cylindrical members with a rectangular cross section. The floor-side runner 15b has a strip-shaped base plate 15b1 extending along the floor 2, and a pair of side walls 15b2 extending upward from both widthwise ends of the base plate 15b1 in a direction perpendicular to the base plate 15b1.

[0034] One of the pair of side walls 15b2 supports the first wall panel 13 from the inner surface, and the other of the pair of side walls 15b2 supports the second wall panel 14 from the inner surface. Specifically, the pair of side walls 15b2 are fixed to the stud 15a with screws (not shown) while sandwiching the lower end of the stud 15a disposed between them.

[0035] The ceiling-side runner 15c is a component of similar shape to the floor-side runner 15b, and has a strip-shaped base plate 15c1 extending along the ceiling 3 and a pair of side walls 15c2 extending downward from the widthwise ends of the base plate 15c1 in a direction perpendicular to the base plate 15c1. The pair of side walls 15c2 support the first wall panel 13 and the second wall panel 14 from their inner surfaces. Specifically, the pair of side walls 15c2 are fixed to the studs 15a with screws (not shown) while sandwiching the upper ends of the studs 15a disposed between them.

[0036] The first wall panel 13 is provided so as to face the first room 4. A first opening 13a is provided at the end of the first wall panel 13 on the floor 2 side.

[0037] The second wall panel 14 is provided so as to face the second room 5. The second wall panel 14 is provided at a distance from the first wall panel 13, and a space 10a is formed between the first wall panel 13 and the second wall panel 14. A second opening 14a is provided at the end of the second wall panel 14 on the floor 2 side.

[0038] The duct 20 is provided on the floor 2 side, connects the first opening 13a and the second opening 14a, and forms an air passage 20a separated from the space 10a between the first wall panel 13 and the second wall panel 14.

[0039] Fig. 4 is a partial cross-sectional view of the side of the duct, and Fig. 5 is a perspective view of the exterior of the duct. Fig. 6 is a partially enlarged view of the side of the duct on the first room side. Duct 20 has a duct body 21, fixing parts 22 provided on both ends of duct body 21, and hinges 20b that rotatably connect fixing parts 22 to duct body 21.

[0040] The duct body 21 is a cylindrical member having an air passage 20a and openings that open the air passage 20a to both sides in the thickness direction of the partition wall 10. The duct body 21 preferably has the property of not easily transmitting sound (vibrations) to the space 10a between the first wall panel 13 and the second wall panel 14. Specifically, the duct body 21 preferably has the property of not easily vibrating due to noise in the air passage 20a and has a natural frequency different from the frequency of the noise to be reduced. For example, the duct body 21 is preferably made of wood or resin with a certain rigidity and thickness. The duct body 21 has a bellows-like expandable portion 21a that can expand and contract to change the length of the air passage 20a. Specifically, the duct body 21 has a pair of non-expandable portions 21b whose length in the thickness direction of the partition wall 10 is fixed, and an expandable portion 21a located between the pair of non-expandable portions 21b and expandable in the thickness direction of the partition wall 10. Note that the expandable portion 21a is not shown in FIG. 3.

[0041] The fixing parts 22 fix the duct body 21 to the support mechanism 15 with the duct body 21 connected to the first opening 13a and the second opening 14a. Specifically, as shown in FIG. 2, a notch 15b3 facing the first opening 13a is formed in the side wall 15b2 (first support plate part) on the first wall panel 13 side. Similarly, a notch 15b3 facing the second opening 14a is formed in the side wall 15b2 (second support plate part) on the second wall panel 14 side. The duct body 21 is disposed in the part of the side wall 15b2 where the notch 15b3 is provided, and is fixed to the floor-side runner 15b by the fixing parts 22 with the air passage 20a in the duct body 21 connected to the first opening 13a and the second opening 14a.

[0042] Specifically, the fixing portion 22 is attached to the duct body 21 by a hinge 20b so as to be rotatable between a clamping position in which the fixing portion 22 clamps the side wall 15b2 in the thickness direction of the partition wall 10 between the fixing portion 22 and the end portion (hereinafter also referred to as the "opening end") on the opening side of the duct body 21, and a release position in which the clamping of the side wall 15b2 is released.

[0043] 6, fixing portion 22 fixes duct body 21 to support mechanism 15 by clamping side wall 15b2 between fixing portion 22 and the open end of duct body 21. Fixing portion 22 also has opening 22a, which is connected to the open end of duct body 21 in the clamping position, opening 22a to open air passage 20a to first chamber 4 and second chamber 5.

[0044] A needle-shaped locking portion 22b is provided at the end opposite to the hinge 20b on the surface of the fixing portion 22 that faces the duct body 21. In the clamping position, the locking portion 22b penetrates the side wall 15b2 and is inserted into the duct body 21, thereby locking the fixing portion 22 to the duct body 21. Note that the hinge 20b and the locking portion 22b are not shown in Figures 1 to 3.

[0045] The thickness of the fixing part 22 is approximately the same as the thickness of the first wall panel 13 and the second wall panel 14. In the clamping position, the fixing part 22 is disposed inside the first opening 13a or the second opening 14a, respectively. As a result, the surface of the fixing part 22 opposite to the duct body 21 is disposed flush with the outer surfaces of the first wall panel 13 and the second wall panel 14.

[0046] By rotating the fixing part 22 to the release position, the locking part 22b is pulled out from the duct body 21, and the clamping of the side wall 15b2 by the duct body 21 and the fixing part 22 is released. This makes it possible to remove the duct body 21 from the floor-side runner 15b.

[0047] The sound-absorbing material 23 comes into contact with the air in the air passage 20a and absorbs air vibrations, thereby reducing sound transmitted from one of the first room 4 and the second room 5 to the other. The sound-absorbing material 23 is provided in the duct 20 between the first wall panel 13 and the second wall panel 14, facing the air passage 20a. Specifically, the sound-absorbing material 23 is arranged on the inner surface of the duct main body 21 along the entire length of both non-expandable sections 21b so as to surround the air passage 20a. The sound-absorbing material 23 may also be arranged in the expandable section 21a. The sound-absorbing material 23 is made of foamed polyurethane, polyester, or the like. The shape of the sound-absorbing material 23 is not particularly limited, but in this embodiment, the surface of the sound-absorbing material 23 facing the air passage is provided with irregularities in order to increase the surface area of ​​the sound-absorbing material 23 and the contact area of ​​the sound-absorbing material 23 with the air, thereby improving sound absorption efficiency (sound insulation performance). In addition, in order to ensure ventilation performance in the air passage 20a, the above-mentioned unevenness is provided so that the convex portions of the sound-absorbing material 23 are arranged intermittently in the circumferential direction of the inner surface of the duct body 21 in a cross section perpendicular to the thickness direction of the partition wall 10 of the duct body 21.

[0048] (Second embodiment) A partition wall according to a second embodiment of the present invention will be described. The partition wall 10 according to this embodiment is configured such that the length of the air passage 20a is longer than that of the duct 20 of the partition wall 10 according to the first embodiment.

[0049] Figure 7 is a cross-sectional view of the partition wall according to this embodiment at a position corresponding to that of Figure 3. In the following description, components that are substantially the same as those shown in Figures 1 to 6 are given the same reference numerals, and their description will be omitted.

[0050] In this embodiment, the top plate of the duct body 21 has a portion that extends above the upper ends of the first opening 13a and the second opening 14a, and a wall panel 21d extending toward the top plate is provided in the center of the bottom plate of the duct body 21. As a result, the length of the air passage 20a is longer than the shortest distance between the first opening 13a and the second opening 14a. When air is ventilated between the first room 4 and the second room 5, the air moves along the wall panel 21d as shown by arrow A in FIG. 10. In the duct 20 according to this embodiment, a sound-absorbing material 23 is also provided inside the duct 20 so as to face the air passage 20a. Specifically, the sound-absorbing material 23 is arranged on the inner surface of the duct body 21 and on the surface of the wall panel 21d over the entire length of the air passage 20a. In addition, the wall panel 21d also functions as a reflector that reflects sound transmitted from one of the first room 4 and the second room 5 to the other, thereby also reducing the sound transmitted from one room to the other.

[0051] (Third embodiment) Next, a partition wall according to a third embodiment of the present invention will be described. The partition wall according to this embodiment is the partition wall according to the first embodiment, with a decorative member attached to the end portion on the floor side.

[0052] Fig. 8 is an external perspective view of the decorative member, where Fig. 8(a) shows the state as seen from the room side and Fig. 8(b) shows the state as seen from the partition wall side. Fig. 9 is a side cross-sectional view of the decorative member, and Fig. 10 is a cross-sectional view of the partition wall according to this embodiment at a position corresponding to Fig. 3. In the following description, components that are substantially the same as those shown in Figs. 1 to 6 are given the same reference numerals, and their description will be omitted.

[0053] The decorative member 30 is a so-called baseboard, and improves the appearance by covering the boundary between the floor 2 and the partition wall 10, and also protects the first wall panel 13 and the second wall panel 14. The decorative members 30 are provided on the first room 4 side and the second room 5 side of the partition wall 10, and are arranged along the bottom edges of the first wall panel 13 and the second wall panel 14, respectively. The decorative members 30 provided on the first room 4 side and the second room 5 side have the same configuration, so the following description will focus on the decorative member 30 provided on the first room 4 side as a representative.

[0054] The decorative member 30 has an inner wall 31 that extends horizontally and is attached to the first wall panel 13, an outer wall 32 that is spaced apart from the inner wall 31, a top plate 33 that connects the upper ends of the inner wall 31 and the outer wall 32, and a bottom plate 34 that connects the lower ends of the inner wall 31 and the outer wall 32. The inner wall 31 has an inner wall opening 31a, and the outer wall 32 has an outer wall opening 32a.

[0055] The decorative member 30 further has a guide portion 35 for guiding the air introduced from the outer wall opening 32a upward, and a side wall 38 for preventing the air inside the decorative member 30 from escaping sideways.

[0056] The guide portion 35 has an upper wall 35a having a base 35a1 extending inward from the upper edge of the outer wall opening 32a in the outer wall 32 and a tip portion 35a2 extending upward from the inner end of the base 35a1, and a lower wall 35b having a base 35b1 extending inward from the lower edge of the outer wall opening 32a in the outer wall 32 and a tip portion 35b2 extending upward from the inner end of the base 35b1.

[0057] A base 35a1 of the upper wall 35a and a base 35b1 of the lower wall 35b face each other vertically. A tip 35a2 of the upper wall 35a and a tip 35b2 of the lower wall 35b face each other in the inward and outward direction of the decorative member 30.

[0058] The side walls 38 have a shape that covers the areas of the decorative element 30 other than the guide portions 35 in a side view from the sides.

[0059] The tip 35b2 of the lower wall 35b closes the inner wall opening 31a and the outer wall opening 32a when viewed from the front of the decorative member 30. The tip 35b2 of the lower wall 35b guides air moving from the first chamber 4 through the air passage 20a to the second chamber 5, bypassing it as shown by arrow A in FIG. 10 . The air may move in the opposite direction to that of arrow A. The tip 35b2 of the lower wall 35b also functions as a reflector that reflects sound traveling from one of the first chamber 4 and the second chamber 5 to the other, thereby reducing sound traveling from one chamber to the other.

[0060] (Action, effect) In the partition wall 10 according to each of the above embodiments, ventilation performance can be ensured between the first room 4 and the second room 5 separated by the partition wall 10 through the air passage 20a formed by the duct 20 connecting the first opening 13a and the second opening 14a. Furthermore, the sound-absorbing material 23 provided between the first wall panel 13 and the second wall panel 14 absorbs noise transmitted between the first room 4 and the second room 5 as the air passes through the air passage 20a, so that sound insulation performance can be ensured while ventilation performance is also ensured.

[0061] Furthermore, in the partition wall 10, the duct 20 separates the air passage 20a from the space 10a between the first wall panel 13 and the second wall panel 14, thereby preventing mutual adverse effects from occurring between the space 10a within the partition wall 10 and the first room 4 and the second room 5.

[0062] In the partition wall 10, sound absorbing material 23 is provided in the duct 20 so as to face the air passage 20a, and can absorb noise as the air passes through the air passage 20a.

[0063] In the partition wall 10, the duct body 21 can be fixed to the support mechanism 15 that supports both the first wall panel 13 and the second wall panel 14 via the fixing portion 22, so that the duct body 21 can be reliably fixed while being positioned relative to both the first opening 13a and the second opening 14a.

[0064] The partition wall 10 can easily fix the duct 20 to the partition wall 10 by sandwiching the side wall 15b2 (first support plate portion) on the first wall panel 13 side, which supports the first wall panel 13 from the inside, between the duct body 21 and the fixing portion 22. Furthermore, with the duct 20 fixed to the side wall 15b2 on the first wall panel 13 side, the air passage 20a and the first opening 13a can be connected through the notch 15b3 formed in the side wall 15b2 on the first wall panel 13 side, so that it is possible to achieve both ventilation performance and reliable fixation.

[0065] In the partition wall 10, by attaching a duct 20 to the floor-side runner 15b that holds the lower end of the studs 15a, ventilation can be achieved by utilizing the relatively inconspicuous part of the partition wall 10 on the floor 2 side.

[0066] Furthermore, since the thickness of the fixing portion 22 and the thickness of the first wall panel 13 are approximately the same, and the surface of the fixing portion 22 facing the first room 4 and the surface of the first wall panel 13 facing the first room 4 are positioned on approximately the same plane, it is easy to apply wallpaper across the first wall panel 13 and the fixing portion 22 or to attach a decorative member 30.

[0067] In the partition wall 10, the duct body 21 of the duct 20 is provided with an expandable portion 21a, so that the duct body 21 can be expanded or contracted according to the thickness of the partition wall 10. Therefore, one type of duct 20 can be applied to partition walls 10 of different thicknesses without having to prepare multiple types of ducts 20 with duct bodies 21 of different lengths.

[0068] In the partition wall 10 of the third embodiment, the air passage 20a of the duct 20 can be made longer, and the length of time that the air passing through the duct 20 comes into contact with the sound-absorbing material 23 can be made longer, thereby further suppressing sound leakage.

[0069] (Variation) Fig. 11 is a cross-sectional view of a modified example of the expansion / contraction section of the duct main body. In the first embodiment, the duct main body 21 having the bellows-shaped expansion / contraction section 21a has been described, but the expansion / contraction section may be of a sliding type, as shown in the figure.

[0070] Specifically, the duct body 21 shown in Fig. 11 has a first non-extendable portion 21e and a second non-extendable portion 21f that constitute a pair of non-extendable portions, an engaged portion 24 provided on the first non-extendable portion 21e, and an engaging portion 25 provided on the second non-extendable portion 21f. The engaged portion 24 and the engaging portion 25 engage with each other so as to be slidable between an extended state and a contracted state, thereby constituting an extendable portion.

[0071] Specifically, engaged portion 24 has base 24a extending from the end of first non-stretchable portion 21e facing second non-stretchable portion 21f toward the center of air passage 20a, insertion portion 24b extending from the end of base 24a facing the center of air passage 20a toward second non-stretchable portion 21f and inserted into second non-stretchable portion 21f, and protrusion 24c extending from the end of insertion portion 24b facing second non-stretchable portion 21f in a direction away from the center of air passage 20a. Engaging portion 25 extends from the end of second non-stretchable portion 21f facing first non-stretchable portion 21e toward the center of air passage 20a.

[0072] The first non-expandable portion 21e and the second non-expandable portion 21f are connected by the expansion portion so as to be slidable between an expanded state in which the length of the duct main body 21 is at its longest, and a contracted state in which the length of the duct main body 21 is at its shortest.

[0073] Specifically, in the extended state, the engaging portion 25 and the protruding portion 24c of the engaged portion 24 come into contact with each other, preventing the engaged portion 24 from coming off. In the contracted state, the engaging portion 25 and the base portion 24a of the engaged portion 24 come into contact with each other, preventing the engaging portion 25 and the engaged portion 24 from moving toward each other.

[0074] Fig. 12 is a cross-sectional view of a modified partition wall. In the first to third embodiments, the duct 20 is attached to the floor-side runner 15b, and in the second and third embodiments, the decorative member 30 is provided as a baseboard at the end of the partition wall 10 on the floor 2 side. However, as shown in the same figure, the duct 20 may be attached to the ceiling-side runner 15c, and the decorative member 30 may be provided as a so-called molding at the end of the partition wall 10 on the ceiling 3 side. The molding covers the boundary between the ceiling 3 and the partition wall 10, thereby improving the appearance and protecting the first wall panel 13 and the second wall panel 14.

[0075] In this case, a first opening 13a and a second opening 14a can be provided at the ceiling 3-side ends of the first wall panel 13 and the second wall panel 14, and notches can be provided in the side wall 15c2 of the ceiling-side runner 15c at positions corresponding to the first opening 13a and the second opening 14a. In this case, the duct 20 can be provided to connect the first opening 13a and the second opening 14a and to form an air passage 20a separated from the space 10a between the first wall panel 13 and the second wall panel 14.

[0076] In this case, ventilation can also be achieved by utilizing the relatively inconspicuous portion of the partition wall 10 on the ceiling 3 side. In addition, the decorative member 30 can cover the first opening 13a, giving the first wall panel 13 a good appearance.

[0077] 12, the upper wall 35a of the guide portion 35 of the decorative member 30 is provided on the lower side and the lower wall 35b is provided on the upper side, and the vertical orientation of the decorative member 30 is reversed from that in FIG. 10. However, even when the decorative member 30 is provided on the ceiling 3 side, it may be oriented in the same manner as in FIG. 10.

[0078] 13 is a schematic diagram of a modified support mechanism, where (a) is a partial side view of the stud, (b) is a plan view of the stud, and (c) is a perspective view of the stud. In the first to third embodiments, the side wall 15b2 of the floor-side runner 15b of the support mechanism 15 on the side of the first wall panel 13 is the first support plate portion, and the side wall 15b2 on the side of the second wall panel 14 is the second support plate portion, and the duct 20 is fixed to these support plate portions. However, these support plate portions may be provided on the support mechanism 15. The modified example described below is an example in which the stud 15a is provided with a first support plate portion and a second support plate portion.

[0079] In this modified example, opening 22a of fixing portion 22 of duct 20 is positioned above side wall 15b2 of floor-side runner 15b, and therefore, unlike the first to third embodiments, notches for connecting ventilation path 20a to first opening 13a and second opening 14a in floor-side runner 15b and ceiling-side runner 15c are not required. On the other hand, when opening 22a of duct 20 is positioned at the same height as side wall 15b2 as in the above-described embodiment, notches must be formed in side wall 15b2.

[0080] 13(a) to 13(c), the stud 15a has a strip-shaped base plate 15a1 extending in the vertical direction and a pair of side walls 15a2 extending from both horizontal end portions of the base plate 15a1 in a direction perpendicular to the base plate 15a1 in a plan view. The side wall 15a2 (first support plate portion) on the first wall panel 13 side supports the first wall panel 13 from the inside, and the side wall 15a2 (second support plate portion) on the second wall panel 14 side supports the second wall panel 14 from the inside.

[0081] The stud 15a has a first protrusion 15a4 extending from a portion of each of the pair of side walls 15a2 above the side wall 15b2 of the floor-side runner 15b in a direction away from the base plate 15a1, and a second protrusion 15a3 extending from a portion of each of the pair of side walls 15a2 above the first protrusion 15a4 in a direction away from the base plate 15a1. The stud 15a is arranged so that the side wall 15a2 is aligned with the side wall 15b2 of the floor-side runner 15b and the side wall 15c2 of the ceiling-side runner 15c.

[0082] In this case, the duct 20 can be fixed to the support mechanism 15 by sandwiching the first protrusion 15a4 and the second protrusion 15a3 between the duct body 21 and the fixing portion 22.

[0083] In the first to third embodiments, as an example of a configuration in which the sound-absorbing material 23 is provided inside the duct 20 so as to face the air passage 20a, a case has been described in which the sound-absorbing material 23 made of foamed polyurethane, polyester, or the like is provided over the entire inner surface of the duct main body 21 so as to leave a space in the center of the duct main body 21. However, a fibrous sound-absorbing material such as glass wool or polyester may also be used as the sound-absorbing material 23. The inside of the duct main body 21 may also be filled with the sound-absorbing material 23 made of a fibrous sound-absorbing material. In this case, the gaps between the fibers of the sound-absorbing material 23 can be used as the air passage 20a, and the sound-absorbing material 23 faces the air passage 20a. Furthermore, the sound-absorbing material 23 may also be provided inside the duct main body 21 so as to leave a space in a portion other than the center of the duct main body 21.

[0084] Fig. 14 is a cross-sectional view of a modified duct. In Fig. 14, components that are substantially the same as those shown in Fig. 4 are assigned the same reference numerals, and their description will be omitted below. In the first to third embodiments, a sound-absorbing material 23 is provided in the duct 20 between the first wall panel 13 and the second wall panel 14 so as to face the air passage 20a, thereby absorbing sound within the duct 20. However, as will be described below, a sound-absorbing material may be provided outside the duct 20 between the first wall panel 13 and the second wall panel 14, thereby absorbing sound outside the duct 20. In this case, too, the sound-absorbing material can absorb noise transmitted between the first room 4 and the second room 5 as the air passes through the air passage 20a.

[0085] In this modified example, as shown in Figure 14, the duct body 21 has an expandable portion 21a, a non-expandable portion 21g having through holes 21g1 formed in the top and bottom plates, and an airtight film 21h attached to the outer surface of the non-expandable portion 21g so as to cover the through holes 21g1.

[0086] The through holes 21g1 are provided at intervals in the longitudinal direction of the duct body 21 and in a direction perpendicular to the longitudinal direction in the top and bottom plates of the non-extendable portion 21g.

[0087] The air passage 20a of the duct 20 is separated from the space 10a between the first wall panel 13 and the second wall panel 14 shown in FIG. 3 and other figures by the stretchable portion 21a, the non-stretchable portion 21g and the airtight film 21h.

[0088] The airtight film 21h is airtight and has the property of easily transmitting sound (vibrations) that have passed through the through-holes 21g1 to the space 10a between the first wall panel 13 and the second wall panel 14. Specifically, the airtight film 21h is made of a material that is airtight and has lower rigidity than the stretchable portion 21a and the non-stretchable portion 21g. The size of the airtight film 21h need only be large enough to cover all of the through-holes 21g1.

[0089] Furthermore, between the first wall panel 13 and the second wall panel 14, a fibrous sound-absorbing material 27 such as glass wool or polyester is provided outside the duct 20, but no sound-absorbing material is provided in the air passage 20a inside the duct body 21. The sound-absorbing material 27 may be provided in contact with the airtight film 21h as shown in FIG. 14 or away from the airtight film 21h, as long as it is between the first wall panel 13 and the second wall panel 14. The sound-absorbing material 27 may be provided facing or not facing the through-hole 21g1. If there are obstructions, such as a floor or ceiling, around the duct 20 between the first wall panel 13 and the second wall panel 14, the sound-absorbing material 27 may be provided in a position that avoids these obstructions.

[0090] When the fixing portion 22 is in the clamping position, the needle-shaped locking portion 22b is inserted into the portion between the through holes 21g1 of the non-expandable portion 21g of the duct body 21.

[0091] In this modification, vibrations (noise) in the air in the air passage 20a are transmitted to the airtight film 21h through the through-holes 21g1, and then transmitted to the air in the space 10a between the first wall panel 13 and the second wall panel 14. The vibrations transmitted to the airtight film 21h and the air in the space 10a are absorbed by the sound-absorbing material 27. This reduces the sound transmitted from one of the first room 4 and the second room 5 to the other.

[0092] In this modification, through holes may also be provided in the side panels of the non-stretchable portion 21g. An airtight film 21h may be provided on the inner surface of the non-stretchable portion 21b. In addition to the sound-absorbing material 27, a sound-absorbing material 23 may be provided inside the duct 20 as in the first to third embodiments shown in FIG. 4 etc. Meanwhile, in the first to third embodiments, the sound-absorbing material 27 of this modification may be provided outside the duct 20 between the first wall panel 13 and the second wall panel 14.

[0093] Furthermore, in this modified example, the duct body 21 may be configured without the stretchable portion 21a and the non-stretchable portion 21g and made of a cylindrical airtight film 21h, and the air passage 20a may be formed by the airtight film 21h. [Explanation of symbols]

[0094] 1 Building 4. Room 1 5. Second Room 10 Partition Wall 10a space 13 First Wall Panel 13a First opening 14 Second Wall Panel 14a Second opening 15 Support mechanism 15a stud 15a1 board 15a2 Side wall (first support plate portion) 15b Floor side runner (runner) 15b1 board 15b2 side wall (first support plate portion) 15b3 Notch 15c Ceiling runner (runner) 15c1 board 15c2 side wall (first support plate portion) 20 Duct 20a Ventilation channel 21 Duct body 21a Telescopic part 22 Fixed part 23 Sound-absorbing material 27 Sound-absorbing material

Claims

1. A partition wall that divides a space in a building into a first room and a second room, a first wall panel facing the first room and having a first opening; a second wall panel facing the second room and spaced apart from the first wall panel, the second wall panel having a second opening; a duct connecting the first opening and the second opening and forming an air passage separated from a space between the first wall panel and the second wall panel; a sound absorbing material disposed between the first wall panel and the second wall panel; a support mechanism provided between the first wall panel and the second wall panel for supporting the first wall panel and the second wall panel; the duct includes a duct body having the air passage, and a fixing portion for fixing the duct body to the support mechanism in a state in which the duct body is connected to the first opening and the second opening, the support mechanism has a first support plate portion that faces the first wall panel and supports the first wall panel from the inside, the fixing portion is configured to be able to clamp the first support plate portion in a thickness direction of the partition wall between the fixing portion and an opening end of the duct body at which the air passage opens, in order to attach the duct body to the first support plate portion, A partition wall, wherein the first support plate portion has a notch formed therein that faces the first opening portion to connect the air passage in the duct body to the first opening portion.

2. the support mechanism includes a plurality of studs and a runner that holds upper or lower ends of the plurality of studs in a state in which the plurality of studs are arranged along a surface direction of the partition wall, the runner has a base plate arranged along the upper end surfaces or the lower end surfaces of the plurality of studs, and a pair of side walls extending from both ends of the base plate in a thickness direction of the partition wall in a direction perpendicular to the base plate, The partition wall according to claim 1 , wherein the side wall includes the first support plate portion.

3. The thickness of the fixing portion is approximately the same as the thickness of the first wall panel; The partition wall according to claim 1 or 2, wherein the fixing portion is disposed inside the first opening.

4. A partition wall that divides a space in a building into a first room and a second room, a first wall panel facing the first room and having a first opening; a second wall panel facing the second room and spaced apart from the first wall panel, the second wall panel having a second opening; a duct connecting the first opening and the second opening and forming an air passage separated from a space between the first wall panel and the second wall panel; a sound-absorbing material disposed between the first wall panel and the second wall panel; The duct has an expandable portion that can expand and contract to change the length of the air passage.

5. The partition wall according to claim 1 , wherein a length of the air passage is longer than the shortest distance between the first opening and the second opening.

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