JPH0742831B2 - Fixing structure of shoji in soundproof ash - Google Patents

Description

The present invention relates to a window attached to an opening of a building, a door having glass, or the like, and more specifically, to reduce vibration of a shoji screen due to noise. As described above, the present invention relates to a shoji screen fixing structure for fixing a shoji screen to a frame. The shoji can be used either as a shoji that can be opened and closed or as a dead-end type.

2. Description of the Related Art A soundproof sash is used for a building in a noisy place or a building which is particularly noisy. Heretofore, in order to improve the soundproofing performance, two types of methods have been pursued: using glass having a high sound insulating effect as the glass itself and reducing the gap between the shoji and the frame to which it is attached.

In the former, thick glass, laminated glass, and double glass structure have been used.

In the latter, for example, as shown in Japanese Examined Patent Publication No. S55-40756, when the shoji is closed, it is drawn to the frame body to minimize the gap between the frame body and the frame body.
The conventional fixing structure of the shoji on the frame is a structure in which a single strip of packing is provided around the frame and a frame is attracted to the packing by a pulling means so as to be in close contact. The close contact improves airtightness and watertightness, and at the same time prevents noise from entering. That is, the place where the sound invades is blocked by the packing that surrounds the surroundings to prevent the invasion.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-described conventional sash fixing mechanism for sashes, for example, one piece of packing protruding outward is provided in the shoji storage portion of the frame, and the shoji It is a structure that pushes the frame against this packing. That is, when viewed in cross section, the outdoor side surface of the outdoor side wall of the shoji frame and the indoor side surface of the indoor side wall are sandwiched by the packing and the retainer, respectively. Certainly, since the frame around the glass is pressed against the packing, the airtightness and watertightness are improved, and the gap is reduced, so the sound insulation effect is improved, but since there is one packing, the inside and outside walls of the frame are each one point. It is no different from supporting it, and there is not much effect in preventing vibration of the shoji itself, including glass. On the other hand, sound is a compressional wave of air, that is, vibration of air. Therefore, the compressional wave of this sound directly transmits through the glass, and the compressional wave vibrates the glass to generate secondary noise. Therefore, the sound insulation effect was reduced.

The present invention has been made for the purpose of limiting this secondary noise as much as possible.

[Configuration of the Invention] Means for Solving the Problems The present invention is one in which a pressing member 4 having an appropriate elastic force is inserted into a gap between the frame 2 and the frame 3 of the shoji 1. As shown in FIG. 1, two pressing members 4 are provided on each of the outdoor side surface of the outdoor side wall 2a and the indoor side surface of the indoor side wall 2b of the frame 2.
As shown in the figure, the indoor side surface and indoor side wall of the outdoor side wall 6a of the frame 6
Place 2 each on the outdoor side of 6b. That is, the pressing members 4 and 7 are provided in the gaps between the frames and the frame bodies 8 at four positions, respectively.
Is inserted and fixed to the frame. The pressing members 4 and 7 are made to have elastic force by being pressed instead of being simply inserted, and the elastic force presses the shoji on the frame. Therefore, depending on the arrangement of the pressing members 4, 7 on the frames 2, 6, the pressing surfaces 3a on which the pressing members are pressed,
8a has been formed. In the case where the pressing member 7 is arranged in the frame like the frame 6 in FIG. 2, it is desirable that the pressing surface 8a is a tapered surface that spreads from the inside of the frame to the outside.

As the pressing member, a synthetic resin, a synthetic rubber or the like, preferably a damping rubber, is used.

Further, the pressing members at each of these four positions may be long members or short members arranged at appropriate intervals at all four positions.
It is preferable that at least one of these four pressing members is a long member continuous in the longitudinal direction so that it also serves as an airtight member between the shoji and the frame, since this also serves as an airtight packing. Of course, there is no problem even if separate airtight packings are used as short materials at all four locations.

Although the sliding window shown in FIGS. 1 and 2 has different sliding doors inside and outside, the summing portion has a summing frame 9 on both the inside and outside sides as shown in FIG. It is desirable to interpose an airtight rubber 11 at the tips of the meshing points of 10 and 10 and tighten with the crescent 12 so that the internal and external shoji can vibrate together. Of course, the present invention can be applied to other windows, doors, etc.

Action In the present invention, since each frame is pressed against the frame member by the pressing members at four points, the inner and outer walls of the frame of the shoji are clamped at two separate positions when viewed in cross section. In this way, the inner and outer walls are not clamped at one point, but are pressed at two points apart from each other, so a force that damps them during vibration is exerted, and vibration energy is consumed by friction inside the pressing material. Vibration of the shoji is dampened. That is, the noise secondarily generated by the vibration of the shoji screen can be reduced, and the sound insulation effect can be enhanced.

EXAMPLE An example of a window using the present invention will be described with reference to the window shown in FIG. The figure shows a sliding window with two shoji screens 20 and 21 on the upper frame 2.
2. It is built in the frame that consists of the lower frame 23 and both vertical frames 24. In this embodiment, the shoji screens are independent of each other without being assembled. Therefore, as shown in FIG. 6, a column 24a is provided between the vertical frames 24, 24. As shown in FIG. 5, the upper frame 22 has a vertical surface 22a on both sides and a partition surface 22b formed in the middle of the vertical surface to face the vertical surface 22a.
And has a shoji running section between them. Lower frame 23
In the same manner, a shoji running portion is formed by the vertical surface 23a and the partition surface 23b, and the shoji 20 and 21 are movably built in the shoji running portion.

The pressing member 26 is inserted into the gap between the outdoor side surface of the outdoor side wall 25a of the upper 25 of the shoji 20, 21 and the indoor side surface of the indoor side wall 25b and the vertical surface 22a and the partition surface 22b of the upper frame 22. is there. Similarly, the pressing member 26 is formed on the outdoor side wall 27a and the indoor side wall 27b of the lower frame 27. As shown in the figure, the pressing members 26 are arranged at two positions on each surface at appropriate intervals. As shown in FIG. 6, the pressing member 26 is similarly attached to the vertical frame 28.

This pressing member is formed in a hollow shape as shown in FIGS. 7 and 8, and is a bellows-like member that expands and contracts by letting air in and out, and the tip of the member is expanded when it is expanded. The shoji is fixed to the frame body by pressing it against the frame body with elastic force. The drive device for expanding and contracting the pressing member 26 is shown in FIG.
It is designed to interlock with the operation of the handle 30 that locks when closed. A pinion 31 is attached to the tip of the handle 30, a rack 32 that meshes with the pinion 31 is slidably attached in the vertical frame 28, and a bellows 33 that expands and contracts due to the sliding of the rack is attached to the tip of the rack. .
The bellows 33 and each pressing member 26 are connected by a hose 34,
The bellows 33 is contracted by rotating the handle 30 from the state shown in FIG. 9 so as to be parallel to the shoji, and the air inside is sent to each pressing member 26 to expand them, and the shoji is pressed against the frame body. It is something that is fixed.

This pressing member 26 is attached to each frame at four positions, but in this embodiment, one of them is continuous over all the frames around one shoji, and also serves as an airtight packing, and the other is short. It is supposed to be a thing.

With the above configuration, when the shoji screen is tightened and the handle 30 is operated to lock it, air is sent to each pressing member 26 by the bellows 33, which expands and presses against the frame. Therefore,
The shoji screen is fixed to the frame by the pressing member 26. It is not necessary to particularly explain that the shoji 20 and 21 can be smoothly opened and closed by contracting the pressing member 26 by setting the handle 30 to the illustrated state. Thus for this embodiment,
When the door is closed and the lock is released by the handle, the pressing member 26 is automatically pressed against the door and fixed.

Since the pressing members 26 are attached to each of the two sides of each frame at two places and four places, the shoji will be sandwiched between the frame body and the peripheral portion at two points respectively, and the vibration of the glass due to noise is suppressed and the glass vibration is caused. It is possible to reduce the generation of secondary noise due to.

In the above embodiment, one of the four pressing members 26 is a long member, but all four members may be long members.

FIG. 10 shows another embodiment, in which the pressing member 40 attached to the frame 38 of the shoji 37 is pressed against the pressing member 41 attached to the frame 39 by the shoji's own weight. Frame as shown
38, a pressing member 4 having a triangular cross-section on both the inside and inside of the frame running surface of the frame 39
0 and 41 are attached so that their oblique sides face each other, and when the shoji 42 descends, the oblique sides contact each other and are pressed against each other. Therefore, in this embodiment, the shoji screen 37 is mounted on the rail 42 of the lower frame 39 while the door roller 43 is running, and both pressing members 40 and 41 are separated as shown in the figure, and the shoji screen descends when the shoji screen 37 is closed. Is done. The arrangement of the pressing members and that at least one set among them are continuous are the same as in the above example.

The pressing material is not limited to the above two examples, and a vibration damping rubber or other synthetic rubber or a material appropriately molded of synthetic resin can be used.

FIG. 11 shows the result of an experiment for examining the effect of the present invention. Long packing on each side of the frame 50
Clamp 52 with 4 pieces of 2 pieces on each side and 1 cm of frame
A load of 0.5 kg weight was applied to measure the sound transmission loss.
The shoji is 1,700 in height and 850 in width. Also,
The glass thickness is 5 mm. 12th to compare with the conventional one
As shown in the figure, the sample was sandwiched by a single piece of packing 55 and a load was applied in the same manner. The measurement results are shown in the graph of FIG. 13, where A is that of FIG. 11 and B is that of FIG.
The measurement was performed according to JIS A 1416 "Method for measuring sound transmission loss in laboratory". As can be seen from the graph, a kind of glass resonance causes the effect of coincidence that noise is transmitted.
Also, it is found that the transmission loss near the secondary mode of glass vibration of 160 Hz is large. That is, it can be seen that the vibration of the shoji itself is attenuated and the secondary noise generated thereby is reduced.

[Effects of the Invention] As described above, according to the present invention, since the frame of the shoji screen is closed by applying pressure to the frame body at four points with elastic force, the vibration of the shoji screen is limited and the secondary vibration is caused by the vibration. The noise that is generated is reduced, and the sound insulation effect can be enhanced.

[Brief description of drawings]

1 and 2 are schematic views for explaining the present invention, FIG. 3 is a cross-sectional view of the assembling portion of the sliding window using the present invention, and FIG. 4 is a front view of an example of the window using the present invention. Fig. 5 is a sectional view taken along line VV in Fig. 4, Fig. 6 is a sectional view taken along line VI-VI in Fig. 4, Fig. 7,
FIG. 8 is a cross-sectional view of the pressing members of FIG. 4 in different states, FIG. 9 is a sectional view of a drive device for expanding and contracting the pressing members, and FIG. 10 is another pressing member. A cross-sectional view of the lower frame portion used, FIG. 11 is a cross-sectional view of the lower frame portion in a test state where a performance experiment was performed, FIG. The graph which shows a test result. 1: Shoji, 2, 6: Frame, 3, 8: Frame, 4, 7: Pressing material.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hiroshi Miyasaka, 4-8 Doshomachi, Higashi-ku, Osaka City, Osaka Prefecture, Japan Nihon Sheet Glass Co., Ltd. (56) References Japanese Patent Publication No. 48-21608 (JP, B2) Japanese Patent Application No. 57-148683 (No. 59-51992), the contents of which are attached to the specification and drawings. Photographed microfilm (JP, U)

Claims (5)

[Claims] 1. In a shoji fixing structure in which a shoji having a frame around a glass is built in a frame attached to a window opening, and the shoji is fixed to the frame, an outdoor side surface of the outdoor side wall of the frame and an indoor side wall There are four pressurizing members with elastic force in a total of four places in the space between the side face and the frame body or the indoor side face of the outdoor side wall of the frame and the outdoor side face of the indoor side wall and the frame body. A fixed structure for shoji that is characterized by 2. Fixing the shoji according to claim 1, wherein at least one of the pressing members arranged at the four positions is continuous in the longitudinal direction and also serves as an airtight member between the frame and the frame. Construction. 3. The shoji fixing structure according to claim 1 or 2, wherein the pressing member is made of synthetic resin or synthetic rubber. 4. The shoji fixing structure according to claim 1, 2, or 3, wherein the pressing member is a synthetic rubber having a vibration damping effect. 5. The fixing structure for a shoji according to any one of claims 1 to 4, wherein an elastic force is applied by pressing the pressing member.