JP5363149B2 - Shoji - Google Patents

Description

The present invention relates to a shoji having excellent sound insulation performance.

  Until now, many ideas have been made to improve the sound insulation performance of the window sash. For example, Patent Document 1 discloses a technique for forming a soundproof sash by providing two window sashes. Patent Document 2 describes a technique for improving sound insulation performance with glass. A sound insulation glass in which a resonator is interposed between plate glass and the space between the plate glasses is maintained by the resonator is disclosed. It is disclosed. And the through-hole which connects the gap | interval part between plate glasses and the hollow part inside a resonator is provided in the resonator, and the sound-insulation performance especially in a mid-low frequency range is improved.

JP-A-10-205218 JP 2003-63844 A

However, the window sash described in Patent Document 1 has a problem in that it costs two window sashes because the front sash and the rear sash are provided to enhance the soundproofing effect. In addition, since the expected size of the opening into which the window sash is fitted is increased, there are problems that the building to be installed is restricted and the operability when opening the shoji is not good.
Furthermore, in the sound insulation glass of patent document 2, since the sound insulation performance is obtained by the glass, the resonator must be interposed between the plate glasses, and the shape and size of the resonator are limited. Furthermore, since the resonator or the spacer member is interposed between the plate glasses, there is a design problem that the resonator and the spacer member are exposed from the sound insulating glass and are easily visible from the outside. Furthermore, since it is necessary to provide a resonator between the glass plates, the glass itself becomes heavy and may be expensive.

Then, this invention makes it a subject to solve the trouble which the above prior arts have, and to provide the shoji which has the outstanding sound insulation performance in addition to having considered the design.

In order to solve the above problems, the present invention has the following configuration. That is, the shoji according to the present invention is a shoji comprising a frame body having a rectangular cross-section of a tubular member having a rectangular cross section, and a glass fitted and fixed in the frame body, and the glass is arranged on the outdoor side. and a second glass arranged on the first glass and the indoor side, with superposed state at a predetermined distance, a first glass shop outer support portions for supporting the outdoor side surface of the first glass, the first A first glass indoor side support portion supporting the indoor side surface of the glass, a second glass outdoor side support portion supporting the outdoor side surface of the second glass, and a second glass indoor side supporting the indoor side surface of the second glass. A support part is provided integrally with or separately from the frame body, the outer peripheral edge of the first glass is sandwiched between the first glass outdoor side support part and the first glass indoor side support part, and the second glass Outdoor support section and second glass indoor support section Between in addition to fixing the two glass to the frame by sandwiching the outer peripheral edge of the second glass, and the first glass shop inner support portion and the second glass house outer support portion of the front Symbol tubular member In this position, a communicating hole is provided along the tubular member for communicating the hollow portion of the tubular member and the gap layer between the two glasses.

The shoji of the present invention can be fitted into an opening of a building to form a FIX window (fitting window), but can also be a shoji that is a component part of a movable window. The movable window can also be formed by being attached to a frame fitted into the part so as to be opened and closed. That is, in the case of a FIX window, the frame to which the glass is fixed constitutes a part or the whole of the frame fitted into the opening of the building. The shape of the frame of the FIX window is not limited to a square shape, and may be a circular shape, a triangular shape, or the like. On the other hand, in the case of a movable window, the frame to which the glass is fixed constitutes a part or the whole of a shoji fold that is detachably mounted on a frame fitted in an opening of a building.

  Further, a space having substantially the same cross-sectional shape as the communication hole is continuously formed in the communication hole, and an extension member that extends the communication hole from the tubular member toward the gap layer is attached to the tubular member. preferable. At this time, the extension member is configured by a perforated member having a through hole having substantially the same cross-sectional shape as the communication hole, and the perforated member is formed on the tubular member so that the through hole and the communication hole are continuous. The communication hole can be extended from the tubular member toward the gap layer by the attachment and the through hole. The extension member may constitute the first glass indoor side support part and the second glass outdoor side support part.

Furthermore, it is preferable to fill the hollow portion of the tubular member with a sound absorbing material. Furthermore, a sound absorbing material may be disposed on the surface of the inner surface of the tubular member where the communication hole is open.
In the shoji of the present invention, the sound insulation performance is improved by providing a hollow portion in the frame or the frame constituting the shoji of the shoji and reducing the sound transmitted through the first glass by resonance. That is, the frame body, which is a member for fixing the glass, is provided with a communication hole that communicates the hollow portion and the gap layer between the two glasses, and the frame body has a structure in which the gap layer and the hollow portion communicate with each other. Has a function as a resonator.

Thus, since the frame body has a function as a resonator by providing the structure in which the gap layer and the hollow portion communicate with each other through the communication hole, the shoji of the present invention has excellent sound insulation performance. Yes. The shoji of the present invention is mainly excellent in the sound insulation performance in the middle and low frequency range. Such performance depends on the structure and installation position of the resonator, the volume of the hollow portion, and the width of the communication hole (plate glass). ) In the thickness direction) and the length (the length in the communication direction of the communication hole connecting the gap layer and the hollow portion).

In a conventional sound insulation glass, a member that functions as a resonator is interposed between two glasses, but the member that functions as a resonator must be accommodated within the interval between the two glasses. Its volume was limited. However, in the shoji of the present invention, the hollow portion of the resonator is arranged on the frame or shoji ridge which is the outside of the glass (position facing the outer peripheral end surface of the glass), so that the volume of the hollow portion can be increased. .

The shoji of the present invention has excellent sound insulation performance in addition to consideration for design.

It is principal part sectional drawing which shows the structure of the window sash of this embodiment. FIG. 2 is a longitudinal sectional view of a FIX window formed by fitting the window sash of FIG. 1 into an opening of a building. FIG. 3 is a horizontal sectional view of the FIX window of FIG. 2. It is a longitudinal cross-sectional view of the FIX window formed by fitting the window sash of the modification of this embodiment in the opening part of a building. It is a horizontal sectional view of the FIX window of FIG. It is a longitudinal cross-sectional view of the movable window formed by fitting the frame which equips the window sash of this embodiment as a shoji in the opening part of the building. It is a horizontal sectional view of the movable window of FIG. It is a longitudinal cross-sectional view of another kind of movable window formed by fitting a frame having the window sash of this embodiment as a shoji into an opening of a building. It is a horizontal sectional view of the movable window of FIG. It is principal part sectional drawing which shows the structure of the modification of the window sash of FIG. It is a figure explaining the test device of the sound insulation performance of a window sash. It is a graph which shows the frequency characteristic of the sound insulation performance of a window sash.

Embodiments of a shoji according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of a main part in which the lower end portion of the window sash according to the present embodiment is broken along a plane perpendicular to the lateral direction of the plate glass.
In the following description, terms indicating directions such as “up”, “down”, “left”, “right”, “front”, and “rear” are for convenience of description unless otherwise specified. 1 means the respective directions (“front” and “rear” mean front and rear with respect to the page). Therefore, “upper and lower” in the following description means the height direction of the glass sheet, “left and right” means the thickness direction of the glass sheet, and “front and rear” means the horizontal direction of the glass sheet.

  A rectangular frame 10 (hereinafter referred to as “four-side frame”) is formed by the tubular member 1 having a rectangular cross section. On the inner peripheral surface 10a of each side of the four-sided frame 10, two spacer members 5, 5 and two pressing edges 6, 6 extending along the longitudinal direction (front-rear direction in FIG. 1) of each side of the four-sided frame 10 are provided. Are fixed by conventional fixing means such as screwing. That is, on the inner peripheral surface 10a of each side of the four-sided frame 10, the pressing edge 6, the spacer member 5, the spacer member 5, and the pressing edge 6 are spaced from each other by a predetermined distance from the right side (outdoor side) to the left side (house). It is fixed in this order toward the inside. In addition, you may interpose the airtight material which block | closes the space | gap between both between the pressing edge 6 and the four-sided frame 10. FIG.

Then, by sandwiching the outer peripheral edge portion of the plate glass 2, 2 between the spacer member 5 and the pressing edge 6 via a cushioning material 7 such as rubber, the two plate glasses 2, 2 are separated from each other by a predetermined interval. 10 and is fixed in a killing shape. That is, the two glass sheets 2 and 2 are fixed to the four-sided frame 10 with an interval formed between the two spacer members 5 and 5.
In addition, the plate glass 2 on the right side in FIG. 1 corresponds to the first glass which is a constituent element of the present invention, and the plate glass 2 on the left side corresponds to the second glass which is a constituent element of the present invention. Moreover, the right pushing edge 6 in FIG. 1 is equivalent to the 1st glass outdoor side support part which is the structural requirements of this invention, and the right spacer member 5 is the 1st glass indoor side support part which is the structural requirements of this invention. Equivalent to. Further, the left spacer member 5 corresponds to a second glass outdoor side support portion which is a constituent requirement of the present invention, and the left pushing edge 6 corresponds to a second glass indoor side support portion which is a constituent requirement of the present invention.

Moreover, in the window sash of this embodiment, as shown in FIG. 1, the communicating hole 3 which connects the gap | interval layer 13 formed between the glass plates 2 and 2 and the hollow part 11 of the tubular member 1 which functions as a resonator. Is provided on the inner peripheral surface 10a side of the four-sided frame 10 (position between the two spacer members 5 and 5).
The four-sided frame 10 is composed of a tubular member 1, and the inside thereof is hollow, and the hollow portion 11 and the gap layer 13 are communicated with each other through the communication hole 3. The air in the communication hole 3 and in the vicinity thereof vibrate strongly at a specific frequency, and the acoustic energy is converted into heat energy and consumed as frictional heat by friction between the inner wall surface of the communication hole 3 and the air. Occurs and the noise is absorbed. At this time, the width (length in the left-right direction) of the communication hole 3, the dimension of the spacer member 5, and the volume of the hollow portion 11 may be set so that the resonance frequency becomes a desired value.

  Further, a space between the opposing surfaces of the two spacer members 5 and 5 and having a width in the left-right direction equal to that of the communication hole 3 (hereinafter also referred to as slit space) is continuous with the communication hole 3. . That is, the two spacer members 5 and 5 form a space having substantially the same cross-sectional shape (cross-section by a plane along the left-right direction) as the communication hole 3, and the communication hole 3 is formed by this slit space. It extends from the tubular member 1 (inner peripheral surface 10a) toward the gap layer 13 (extends in the vertical direction).

  In FIG. 1, the spacer members 5 and 5 correspond to the extending members that are the constituent elements of the present invention, and serve as the first glass indoor side support portion and the second glass outdoor side support portion. Yes. In FIG. 1, the spacer members 5, 5 serve as the extension member, the first glass indoor side support part, and the second glass outdoor side support part, but by forming the slit space continuously in the communication hole 3. An extension member that extends the communication hole 3 may be provided separately from the spacer members 5 and 5.

  In FIG. 1, the slit space is formed by two extending members, but the slit space may be formed by one extending member. That is, the extension member is formed of a perforated member having a through-hole having substantially the same cross-sectional shape (cross-section by a plane along the left-right direction) as the communication hole 3, and the above-described presence of the extension member so that the through-hole and the communication hole 3 are continuous. A hole member may be attached to the tubular member 1, and the communication hole 3 may be extended from the tubular member 1 toward the gap layer 13 by the through hole. In this case, the perforated member may also serve as the spacer members 5 and 5 (the first glass indoor side support portion and the second glass outdoor side support portion), and the perforated member and the spacer members 5 and 5 May be a separate member.

  In the window sash of this embodiment, as shown in FIG. 1, a hollow portion 11 is arranged in a four-sided frame 10 that is positioned opposite to the outer peripheral end surface 2 a of the plate glass 2, and the gap layer 13 and the hollow portion 11 communicate with each other. Since the resonator is formed by the communication hole 3 and the hollow portion 11, the larger hollow portion 11 can be formed as compared with the case where the resonator is interposed between the plate glasses 2. In particular, if the width of the air layer of the hollow portion 11 is large, the sound absorption performance can be improved, and therefore the window sash of the present embodiment can be set to have specifications with excellent sound insulation performance.

Further, in the window sash of the present embodiment, the hollow portion 11, the spacer member 5, and the pressing edge 6 are not interposed between the plate glasses 2 and 2, and the hollow portion 11 is at a position facing the outer peripheral end surface 2 a of the plate glass 2. Since the spacer 5 material and the pressing edge 6 are arranged in the vicinity thereof, the hollow portion 11 and the spacer member 5 are not exposed when the window sash installed on the window or the like is viewed from the outside.
Such a window sash according to the present embodiment has excellent sound insulation performance, and thus is suitable as a glass window for a building such as a house or a building or a transportation device such as a vehicle, a ship, or an aircraft. An example in which the window sash according to the present embodiment is fitted into the opening 20 of the building to form a FIX window (fitting window) is shown in FIGS. Moreover, the example which fitted the window sash of the modification of this embodiment in the opening part 20 of a building, and formed the FIX window is shown to FIG.

  Furthermore, since the window sash of this embodiment can also be used as a shoji which is a component part of a movable window, it is attached to a frame fitted in an opening of a building or the like so that it can be opened and closed to form a movable window. You can also. That is, the four-sided frame 10 becomes a saddle for shoji. The type of the movable window is not particularly limited, and examples thereof include a sliding window, a sliding window, a draw window, a raising / lowering window, an inward window, an outward window, a protruding window, a rotating window, and an open window. An example in which a movable window is formed by fitting a frame having the window sash of the present embodiment as a shoji into an opening 20 of a building is shown in FIGS. FIGS. 6 and 7 are examples of open windows (reference numeral 22 in FIG. 7 is a rotating shaft for opening and closing the shoji), and FIGS. 8 and 9 are examples of single sliding windows.

  When using the window sash of this embodiment as a shoji for a movable window, a movable window is formed by fitting a frame in which the shoji, which is the window sash of this embodiment, can be opened and closed, into an opening of a building or the like. However, if only the shoji screen is replaced with the window sash of the present embodiment among the ordinary movable windows already attached to the building, etc., the ordinary movable windows can be moved with excellent sound insulation performance. Can be changed to a formula window.

  In the window sash of the present embodiment, the cross-sectional shape of the communication hole 3 is not particularly limited, and examples thereof include a circle, an ellipse, a rectangle, and a triangle. Further, the number of the communication holes 3 is not particularly limited, and a plurality of communication holes 3 may be arranged in the direction along the outer peripheral end surface 2a of the plate glass 2 (the front-rear direction in FIG. 1). For example, a plurality of communication holes 3 may be provided side by side at regular intervals. Further, the communication hole 3 may be a long hole extending in a direction along the outer peripheral end surface 2 a of the plate glass 2, and one long hole may be formed over both ends of one side of the four-sided frame 10. In the case of a long hole, the four-sided frame 10 provided with the hollow portion 11 and integrally formed with the spacer member 5 and the pressing edge 6 can be formed of an aluminum extruded profile, leading to cost reduction. .

  On the other hand, since the resonance frequency varies depending on the width of the communication hole 3 (length in the left-right direction), for example, a window sash specialized for sound insulation in a specific frequency range can be used. Furthermore, by providing diversity in the width of the communication hole 3 on each side of the four-sided frame 10, it is possible to obtain a window sash having excellent sound insulation performance over a wide frequency range. Thus, it is possible to obtain a window sash rich in variations by changing the width and the installation form of the communication hole 3.

  Further, when the communication hole 3 is extended from the tubular member 1 toward the gap layer 13 using the extension member, the length of the communication hole 3 in the extension direction (vertical direction in FIG. 1) (hereinafter referred to as the neck length). Depending on the frequency, the resonance frequency varies. The longer the neck length, the lower the resonance frequency, and the shorter the neck length, the higher the resonance frequency. Thus, since the resonance frequency can be changed by adjusting the neck length, it is possible to obtain a window sash according to the application.

The correlation equation between the structure of the four-sided frame 10 and the resonance frequency (f ₀ ) is shown below. Since the resonator according to the present invention has a structure to which a Helmholtz resonator is applied, the resonance frequency (f ₀ ) of the resonator is variable depending on the structure of the window sash. The resonance frequency (f ₀ ) is calculated by the following factors using the following correlation formula, and high sound absorption performance is obtained in the vicinity of the resonance frequency (f ₀ ) calculated from the correlation formula.

b: width of the communication hole B: width of the air layer in the hollow portion (length in the left-right direction)
L: Thickness of the air layer in the hollow portion (length in the vertical direction)
A: Cross-sectional area of hollow part (= B × L)
t: neck length p: aperture ratio (b / B)
t ': opening end correction C: sound velocity f ₀ in the air: the resonance frequency

  The opening end correction t ′ is a parameter for correcting the neck length. As described above, air in the slit space vibrates, but actually air slightly above the upper end and slightly below the lower end also vibrates, contributing to sound absorption. Therefore, since it is necessary to correct this portion when calculating the resonance frequency, the neck length t is corrected by the opening end correction t ′.

Here, an example of calculating the resonance frequency is shown. The width b of the communication hole is 1 mm, the width B of the air layer in the hollow portion is 95 mm, the thickness L of the air layer in the hollow portion is 25 mm, the cross-sectional area A of the hollow portion is 2375 mm ² , the neck length t is 20 mm, and the aperture ratio When p is 0.01, the opening end correction t ′ is 2.6, and the sound velocity C in the air is 340000 mm / s, the resonance frequency f ₀ is 233 Hz. When the width b of the communication hole is 5 mm, only the opening end correction t ′ among the above factors changes to 7.5, and the resonance frequency f ₀ is 473 Hz.

  Furthermore, in the window sash of this embodiment, the whole or a part of the hollow portion 11 is filled with a sound absorbing material (not shown in FIG. 1), or the communication hole 3 is formed on the inner surface of the hollow portion as shown in FIG. If the sound-absorbing material 8 is arranged so as to straddle the opening of the communication hole 3 on the open side surface, the conversion from the acoustic energy of the vibrating air to the thermal energy is promoted, so the sound insulation performance of the window sash is improved. Further improvement can be achieved.

The type of the sound absorbing material is not particularly limited, but fiber materials such as glass wool and rock wool are preferable. Further, an aluminum sound absorbing material such as aluminum fiber, aluminum cutting waste, and aluminum sintered body is preferable. The aluminum sound-absorbing material does not absorb moisture and thus hardly deteriorates and is excellent in recyclability.
Furthermore, if the tubular member 1 is formed of an aluminum extruded profile, the tubular member 1 can be manufactured at low cost. Moreover, since it is also possible to manufacture the tubular member 1 and the pressing edge 6 integrally, it is not necessary to perform the joining operation | work of the tubular member 1 and the pressing edge 6, and work amount and cost can be reduced. Moreover, since the four-sided frame 10 is made of aluminum, the weight of the window sash can be reduced and the recyclability can be improved.

  In addition, this embodiment shows an example of this invention and this invention is not limited to this embodiment. For example, in this embodiment, the four-sided frame 10 is formed by the tubular member 1 and the resonator including the hollow portion 11 and the communication hole 3 is provided on the entire periphery of the window sash. The vessel may not be provided around the entire periphery of the window sash, and may be provided at a part of the periphery of the window sash. For example, a resonator may be provided on one to three sides of the four sides of the window sash, or a resonator may be provided on a part of one side of the window sash.

When the resonator is provided at a part of the peripheral edge of the window sash, a frame member constituting a frame or a ridge may be separately prepared, and the tubular member 1 may be accommodated inside the frame member. Moreover, when the resonator is provided in the peripheral part perimeter of the window sash, you may accommodate the tubular member 1 (namely, four-sided frame 10) inside a frame member, but the four-sided frame 10 is made into a frame or a collar. It can also be used.
In the present embodiment, there are two plate glasses 2 provided in the window sash. However, if the mass and cost of the window sash are allowed, the plate glass 2 may be three or more.

  Furthermore, the kind of plate glass 2 is not specifically limited, In addition to general silica glass, tempered glass, laminated glass, netted glass, lined glass, and the like can be used. Furthermore, resin plate glass such as polycarbonate and acrylic resin can also be used. Furthermore, the thickness of the plate glass 2 is not particularly limited. In addition, it is not necessary to make all the plurality of plate glasses 2 the same type or the same thickness, and it is also possible to use a combination of plate glasses having different types and thicknesses.

Furthermore, the gas filled in the gap 13 between the glass plates 2 is not limited to air, and nitrogen gas, argon gas, krypton gas, or the like can also be used.
Further, a desiccant such as silica gel may be mixed with the sound absorbing material. If it does so, the moisture absorption in the clearance gap 13 between the plate glasses 2 and the hollow part 11 can be performed. However, you may provide the space which accommodates a desiccant in the hollow part 11 or the spacer member 5. FIG.

Furthermore, you may provide the drain hole which discharges the water inside the hollow part 11 of the four-sided frame 10 to the exterior of a window sash. This drain hole needs to be a hole different from the communication hole 3. Moreover, in order to drain the water inside the hollow part 11 sufficiently, it is preferable to provide a drain hole in the lower part of the window sash as much as possible.
Furthermore, a hollow body may be prepared separately, and the hollow body may be attached to the four-sided frame 10 instead of using the tubular member 1 having the hollow portion 11. At that time, the internal space of the hollow body and the gap 13 are communicated. If such a hollow body is used, it is not necessary to use the tubular member 1 as a frame member constituting the four-sided frame 10. For example, a frame member having a substantially U-shaped cross section in which one of the four peripheral surfaces of the tubular member is open. Since it is also possible to use, the degree of freedom in material selection is increased.

〔Example〕
Hereinafter, the present invention will be described more specifically with reference to examples.
A window sash having substantially the same configuration as that of the above-described embodiment was manufactured using two rectangular glass plates having a length of 1500 mm and a width of 1250 mm, and the sound insulation performance was measured. The plate glass has a thickness of 8 mm on the outdoor side and 5 mm on the indoor side. Moreover, the space | interval between both plate glass is 25 mm. Furthermore, the communication hole of the hollow portion is a plurality of circular holes provided at regular intervals over both ends of one side of the four-sided frame (hereinafter, these circular holes are referred to as slits).

As shown in FIG. 11, the test apparatus includes two reverberation chambers that are adjacent to each other with a window sash as a sample, a sound source device, and a sound receiving device. And the measurement of the average sound pressure level by the method prescribed | regulated to Japanese Industrial Standard JIS A1416 and the measurement of the reverberation time by the method prescribed | regulated to Japanese Industrial Standard JIS A1409 were performed.
In the former measurement, sound is generated by a speaker in a sound source reverberation chamber, and the respective sound pressure levels are measured by a plurality of microphones in the sound source reverberation chamber and the sound receiving reverberation chamber. In the latter measurement, sound is generated in the reverberation room for receiving sound, and when the sound in the same room reaches a steady state, the radiation of the sound is stopped, and the time from that point until the sound pressure level is attenuated by 60 dB is measured. It is to do.

  The measurement frequency was the following center frequency (1/3 octave band). That is, the center frequencies are 100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, and 5000 Hz. The sound transmission loss of the sample was calculated from the following equation by measuring the average sound pressure level of the sound source reverberation chamber and the sound receiving reverberation chamber, and the sound absorption capacity of the sound receiving reverberation chamber.

TL = D + 10 log (S / A)
D = L ₁ −L ₂
A = 0.16 · V · (1 / T)
Here, TL is the sound transmission loss (dB), S is the area (m ² ) of the sample, A is the equivalent sound absorption area (m ² ) of the reverberation chamber for receiving sound, D is the sound pressure level difference (dB) between the rooms, L ₁ is the average sound pressure level (dB) of the sound source reverberation room, L ₂ is the average sound pressure level (dB) T of the sound receiving reverberation room, T is the reverberation time (sec) of the sound receiving reverberation room, and V is the receiving sound level. This is the volume (m ³ ) of the sound reverberation chamber.

  There are three types of samples actually measured. The sample 1 is provided with a slit having a width of 5 mm in the left-right direction in a hollow portion, and glass hollow (GW) is filled as a sound absorbing material in the hollow portion. Sample 2 is provided with a slit having a width of 5 mm in the left-right direction in the hollow portion, and the GW is not filled in the hollow portion. The sample 3 has no slit in the hollow portion, and the GW is not filled in the hollow portion.

  The frequency characteristics of sound transmission loss for the three types of samples are shown in the graph of FIG. Compared with the sample 3 which is a conventional example in which the hollow part is not provided with a slit and the plate glass is simply fixed to the frame, the sample 1 and the sample 2 corresponding to the examples of the present invention have excellent sound insulation performance, In particular, it can be seen that the sound insulation performance in the mid-low frequency range (150 to 500 Hz) is excellent.

DESCRIPTION OF SYMBOLS 1 Tubular member 2 Sheet glass 2a Outer peripheral end surface 3 Communication hole 5 Spacer member 6 Pushing edge 8 Sound absorbing material 10 Four-sided frame 11 Hollow part 13 Gap layer 20 Opening of building

Claims (7)

In a shoji comprising a frame body having a rectangular cross-section of a tubular member having a rectangular cross section, and a glass fitted and fixed in the frame body,
The glass is provided with a first glass arranged on the outdoor side and a second glass arranged on the indoor side in a state of being overlapped at a predetermined interval ,
A first glass outdoor side support portion supporting the outdoor side surface of the first glass, a first glass indoor side support portion supporting the indoor side surface of the first glass, and a second supporting the outdoor side surface of the second glass. A glass outdoor side support portion and a second glass indoor side support portion that supports the indoor side surface of the second glass are provided integrally or separately in the frame, and the first glass outdoor side support portion and the first glass By sandwiching the outer peripheral edge portion of the first glass with the glass indoor side support portion, and sandwiching the outer peripheral edge portion of the second glass with the second glass outdoor side support portion and the second glass indoor side support portion. While fixing both glasses to the frame,
A position between the said second glass house outer support portions and the first glass shop inner support portions of the front Symbol tubular member, along said tubular member, the interstitial layer between the two glass hollow portion of the tubular member A shoji characterized by providing a communication hole that communicates with. Shoji according to claim 1, wherein the openably mounted Turkey in a frame to be fitted into the opening of a building. A space having substantially the same cross-sectional shape as the communication hole is formed continuously with the communication hole, and an extension member that extends the communication hole from the tubular member toward the gap layer is attached to the tubular member. The shoji according to claim 1 or 2. The extending member is configured by a perforated member having a through hole having substantially the same cross-sectional shape as the communication hole, and the perforated member is attached to the tubular member so that the through hole and the communication hole are continuous, The shoji according to claim 3, wherein the communication hole is extended from the tubular member toward the gap layer. The shoji according to claim 3 or 4, wherein the extension member constitutes the first glass indoor side support part and the second glass outdoor side support part. Shoji according to any one of claims 1-5, characterized in that filled with sound absorbing material on the tubular member. The shoji according to any one of claims 1 to 5, wherein a sound absorbing material is disposed on a surface of the tubular member on a side where the communication hole is open.

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