JP2003336458A - Opening part device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the breakage of the inner window of a double window by wind pressure. <P>SOLUTION: Inner and outer double windows 3 and 4 are installed in the opening 2 of a building, and comprise frame bodies 6 and 10 having upper frames 6a and 10a, lower frames 6b and 10b, and right and left side vertical frames 6c, 6d, 10c, and 10d and sashes 7a, 7b, 11a, and 11b openably installed in the frame bodies 6 and 10. The inner and outer window also comprise a pressure regulating mechanism 20 for reducing a pressure difference between the inside and outside of the double window through the inner window by automatically opening a valve when the wind pressure exceeding a specified pressure is applied to the frame body 10 of the inner window 3 or the sashes 11a and 11b. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening device, and more particularly to an opening device in which the influence of wind pressure on an inner sash in a so-called double sash is eliminated. 2. Description of the Related Art As an opening device, a so-called double sash is known, which is constructed by providing an inner and outer sash at an opening of a building. The inner and outer sashes are each provided with a frame composed of an upper frame, a lower frame, and left and right vertical frames, and a shoji (shoji) provided on the frame so as to be freely opened and closed. In such a double sash, even when the inner and outer sashes are in a closed state, for example, when the sash is a pulling sash, it is difficult to ensure airtightness between the mating frame and the frame, etc. When wind pressure is applied to the outer sash, pressure tends to be applied to the inner sash. For example, if the outdoor pressure (wind pressure) is P1, the pressure in the air layer (intermediate layer) between the outer sash and the inner sash is P2, and the indoor pressure is P3, the pressure P2 in the intermediate layer is P1. And P3. Therefore, when considering the wind pressure resistance of the double sash, not only the outer sash but also the inner sash needs to have sufficient strength against the pressure P2 of the intermediate layer. [0004] In the case of a sliding sash, the outdoor pressure P
When 1 is a positive pressure, the intermediate layer pressure P2 is the outdoor pressure P
It is confirmed that the pressure P2 of the intermediate layer is about 80% of the pressure P1 of the outdoor when the outdoor pressure P1 is a negative pressure. [0005] However, in a conventional double sash, when a resin sash is used for the inner sash in a cold region or the like, the strength of the resin sash is lower than that of the aluminum sash. When used in a place with strong wind pressure, such as a mid- to high-rise building, there is a risk that the inner sash will not have enough strength against the wind pressure, for example, the shoji may come off, or the detached shoji may fall and damage the glass. there were. For this reason, when a weak sash, such as a resin sash, is used for the inner sash, it cannot be used in a place where the wind pressure is strong, such as a middle-to-high-rise building. The present invention has been made in consideration of the above circumstances, and provides an opening device which can eliminate the influence of breakage of the inner sash due to wind pressure in a double sash and improve safety. The purpose is to: According to the present invention, a sash is provided inside and outside the opening of a building, and the inside and outside sashes are composed of an upper frame, a lower frame, and right and left vertical frames, and the frame. The sash is provided on the inner sash frame or the sash, and when a wind pressure exceeding a predetermined pressure is applied to the sash frame or the sash, the valve automatically opens to reduce the pressure difference between the inner and outer sashes. A pressure adjusting mechanism for reducing the pressure is provided. Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 is a longitudinal sectional view of an opening device showing an embodiment of the present invention, FIG. 2 is a transverse sectional view of the opening device, and FIG. 3 is a front view of an inner sash in the opening device on the indoor side. 4 is a longitudinal sectional view of the inner sash, FIG. 5 is a transverse sectional view of the inner sash, and FIG. 6 is a perspective view of the magnet pressing member. 1 and 2, reference numeral 1 denotes a so-called double sash, which is an opening device provided at an opening of a building. In the illustrated example, the opening device is provided at an opening 2 of a middle-to-high-rise building. The double sash 1 is configured such that the opening 2 is provided with sashes 3 and 4 inside and outside. An air space (intermediate layer) 5 is formed between the outer sash 4 as the outer window and the inner sash 3 as the inner window. The outer sash 4 has a rectangular frame 6 composed of an upper frame 6a, a lower frame 6b, and left and right vertical frames 6c and 6d. 7a,
7b. The shoji screens 4a and 4b are configured by fitting a glass 9 into a frame 8 composed of an upper frame 8a, a lower frame 8b, and left and right vertical frames 8c and 8d. Reference numeral 8e denotes an intermediate frame which is suspended substantially in the height direction in the frame 8, and may not be provided depending on the height of the shoji. The outer sash 4 is made of aluminum, and the frame material forming the frame 6 and the frame material forming the frame 8 are made of extruded aluminum alloy. On the other hand, as shown in FIGS. 3 to 5, the inner sash 3 includes an upper frame 10a, a lower frame 10b, and left and right vertical frames 10.
c, 10d, and a frame 1
The sliding doors 11a and 11 are provided so as to be openable and closable in a sliding manner.
b. The sliding doors 11a and 11b
a, a lower frame 12b and left and right vertical frames 12c, 12d, and a glass body 14 is fitted into a frame body 12. Reference numeral 12e denotes an intermediate frame suspended substantially at the middle of the frame body 12 in the height direction, and may not be provided depending on the height of the shoji.
The inner sash 3 is made of resin, and the frame material constituting the frame body 10 and the frame material constituting the frame body 12 are made of extruded synthetic resin. The frame member has a hollow structure, and a reinforcing core 16 made of, for example, a metal profile is inserted into the hollow portion 15 of each of the vertical frames 12c and 12d. Guide ridges 17 protruding downward from the lower edge on the indoor side are formed in the lower portions (lower frames) of the inner and outer shojis 11a and 11b, and the ridges 17 are formed on the upper surface of the lower frame 12b. A guide groove 18 is formed to slidably engage. Shoji 1
Wheels 19 running on the upper surface of the lower frame 12b are provided below 1a and 11b. Then, in order to eliminate the influence of the wind pressure of the inner sash 3 in the double sash 1, when the wind pressure exceeding a predetermined pressure is applied to the frame 10 or the shojis 11a and 11b of the inner sash 3, it is automatically opened. A pressure adjusting mechanism 20 is provided to reduce the pressure difference between the inside and outside of the inner sash 3 as a valve. 1 and 2 do not show a pressure adjusting mechanism, and FIGS. 3 to 5 show examples in which a pressure adjusting mechanism is provided on a shoji. In this case, a pressure adjusting mechanism 20 is provided on the lower frame 12b of the shoji screens 11a and 11b. The pressure adjusting mechanism 20 is provided with an opening 21 provided to communicate with the frame 10 or the shoji 11a, 11b of the inner sash 3 in the indoor and outdoor directions, and is provided to open and close the opening 21. And a biasing means, such as a magnet 23, which constantly biases the valve body 22 in the valve closing direction and allows the valve body 22 to open when a wind pressure exceeding a predetermined pressure is applied. It is configured. The pressure adjusting mechanism 20
Is provided on the ventilation frame 24, for example. Ventilation frame 2 in the example shown
4 is arranged between the lower frame 12b and the glass 14. The ventilation frame 24 is formed by assembling the upper and lower horizontal members 24a and 24b between the left and right vertical members 24c and 24d with screws 25, and these horizontal members 24a and 24b and the vertical members 24c and 24c.
An opening 21 is formed by d. A lower fitting portion 27 is formed below the lower cross member 24b so as to fit into the upper groove 26 of the lower frame 12b, and the left and right vertical frames 12c, 12d are opposed to the left and right vertical members 24c, 24d. A horizontal fitting portion 29 that fits into the groove portion 28 of each section is formed, and the ventilation frame 24 is connected to the lower frame 12 b and the left and right vertical frames 12.
c, 12d. Further, a glass mounting groove 30 is provided in an upper part of the upper cross member 24a. A shaft portion 22a is formed at the upper edge of the valve body 22, and the shaft portion 22a is rotatably fitted in a bearing groove 31 formed in the upper cross member 24a. The valve body 22 is suspended in the ventilation frame 24 so as to cover the opening 21 from the inside, and is normally in a bad valve state in which the opening 21 is closed while being suspended by its own weight. Due to the pressure difference between the inside and outside due to the applied wind pressure, the valve body 22
The valve is configured to be opened apart from the valve. In order to ensure airtightness when the valve is closed, the valve body 22 of the opening 21 is
It is preferable that a fin-shaped hermetic material 32 is provided at the peripheral portion on the side where it contacts. A plate-like magnet 23 is provided on the lower cross member 24b below the opening 21 via a magnet pressing member 33. The magnet pressing member 33 is fixed to the lower cross member 24b with screws 34. I have. In order to attract the valve body 22 to the magnet 23, the valve body 22 may be formed of a magnetic material, but when the valve body 22 is formed of a non-magnetic material, for example, a resin,
It is preferable that a magnetic material, for example, a magnetic metal piece 35 having a U-shaped cross section is mounted on the lower edge of the valve body 22. In order to cope with the case where the wind pressure of the outside of the inner sash 3, that is, the wind pressure of the intermediate layer 5 is a positive pressure, a wind pressure exceeding (exceeding) a predetermined positive pressure is applied to one of the sashes, for example, the inner sash 11 a. A ventilation frame 24 is provided so that the valve body 22 opens when the valve body 22 is opened. Further, in order to cope with the case where the wind pressure of the middle layer 5 is a negative pressure, the valve body 22 is opened when a wind pressure exceeding (below) a predetermined negative pressure is applied to the other sash, for example, the outer sash 11b. The ventilation frame 24 is provided so as to perform the above. By changing the mounting direction of the front and rear of the ventilation frame 24, it is possible to easily set to correspond to the positive pressure or the negative pressure. For example, if the outdoor pressure (wind pressure) is P1, the pressure in the air layer (intermediate layer) 5 between the outer sash 4 and the inner sash 3 is P2, and the indoor pressure is P3, In the case, P1 = 6000 Pa, P2 = 600 Pa,
Assuming that P3 = 0, the outer sash 4 has a pressure resistance of 6000 Pa
The inner sash 3 is designed to have a pressure resistance of 600 Pa. When the wind pressure applied to the inner sash 3, that is, the differential pressure (P 2 −P 1) between the inner sash 3 and the inner sash 3 exceeds a predetermined pressure, for example, 500 Pa, the pressure adjusting mechanism 20. Is configured to open. In the case of negative pressure, P1 = -6000Pa
Then, the inner sash 3 has a pressure P2 = -4 of 80% of P1.
Since 800 Pa is applied to the inner sash 3 and it has no strength at all, the wind pressure applied to the inner sash 3, that is, the differential pressure between the inner and outer sashes 3 (P2-P1) becomes a predetermined pressure, for example, -5
When the pressure exceeds 00 Pa, the valve body 22 of the pressure adjusting mechanism 20 is configured to open. According to the double sash 1 having the above structure, the sashes 3 and 4 are provided inside and outside the opening 2 of the building, and the inner and outer sashes 3 and 4 are composed of the upper frames 6a and 10a and the lower frames 6b and 10b.
b and left and right vertical frames 6c, 6d, 10c, 10d, and sashes 7a, 7b, 11a, 11b provided on the frames 6, 10 so as to be openable and closable, respectively. 3 frame 10 or shoji screens 11a and 11b
In addition, when a wind pressure exceeding a predetermined pressure is applied, a pressure adjusting mechanism 20 for automatically opening the valve and reducing a pressure difference between the inside and outside of the inner sash 3 is provided. The influence of breakage or the like of the sash 3 due to wind pressure can be eliminated, and safety and durability can be improved. Therefore, the inner sash (inner window) 3 made of, for example, resin having a low strength can be used even in a place where the wind pressure is strong, such as a middle and high-rise building. For example, a predetermined pressure, for example, 50 is applied to the inner sash 3.
When a wind pressure of 0 Pa is applied, the valve body 22 of the pressure adjusting mechanism 20 of the inner sash member 11a is opened against the magnetic force or holding force (biasing force) of the magnet 23, and thereby the inner sash 3 is separated from the inner sash 3. Since the pressure difference between the inside and outside is reduced, the shoji screen 11a, 1
There is no danger that the glass 14 or the like may be broken due to the detachment of the sliding sash 1b or the detached sashes 11a and 11b, and the influence of the wind pressure of the inner sash 3 in the double sash 1 can be eliminated. In addition, the durability can be improved.
When a predetermined pressure, for example, a negative pressure of −500 Pa is applied to the inner sash 3, the pressure adjusting mechanism 20
The valve body 22 is opened against the magnetic force or holding force (biasing force) of the magnet 23, thereby reducing the pressure difference between the inside and the outside of the inner sash 3 so that the sliding doors 11a and 11b may come off. There is no danger that the detached sashes 11a and 11b will fall and the glass 14 and the like will be broken, and the influence of the wind pressure of the inner sash 3 in the double sash 1 can be eliminated, and safety can be improved. The pressure adjusting mechanism 20 is provided with an opening 21 provided to communicate with the frame 10 or the shoji 11a, 11b of the inner sash 3 in the indoor and outdoor directions, and is provided to open and close the opening 21. And a biasing means, such as a magnet 23, which constantly biases the valve body 22 in the valve closing direction and allows the valve body 22 to open when a wind pressure exceeding a predetermined pressure is applied. Since it is configured, it has a simple structure, can be easily manufactured and maintained, is hardly broken, and has improved durability. The pressure adjusting mechanism 20 is a ventilation frame 2
4, the sliding doors 11a, 1 of the inner sash 3 are provided.
1b can be easily assembled, and the assembling property or assembling property can be improved. The embodiment of the present invention has been described in detail with reference to the drawings. However, the present invention is not limited to the above embodiment, and various design changes and the like can be made without departing from the gist of the present invention. Is possible. For example, although the resin sash is used in the illustrated example as the inner sash, the inner sash is not limited to the resin, and the frame or the frame is made of metal such as an aluminum outer and outer shape and a resin. It may have a composite heat insulating structure in which an indoor side shape member is combined, or a heat insulating structure in which an aluminum room outer shape member and an aluminum room shape member are connected via a resin heat insulating bridge material. In the above embodiment, the pressure adjusting mechanism is provided on the shroud of the inner sash, but the pressure adjusting mechanism may be provided on the frame of the inner sash. Further, the inner and outer sashes are not limited to the two-piece shoji shown in the illustrated example.
It may be a single-sheet type. Further, the inside and outside sashes may be window sashes or terrace sashes. Further, the inner and outer sashes are not limited to sliding windows, and may be fenestration windows. As the inner sash, it is preferable to provide a pressure adjusting mechanism corresponding to positive pressure and a pressure adjusting mechanism corresponding to negative pressure. However, only the pressure adjusting mechanism corresponding to positive pressure or the pressure adjusting mechanism corresponding to negative pressure is provided. Only a mechanism may be provided. The valve body may be configured to slide to open and close the opening, and a biasing means for biasing the valve body to the valve closing position may be a spring or the like. In summary, according to the present invention, sashes are provided inside and outside the opening of a building, and the inside and outside sashes are composed of an upper frame, a lower frame and left and right vertical frames, The sash is provided on the inner sash frame or the sash, and when a wind pressure exceeding a predetermined pressure is applied to the sash frame or the sash, the valve automatically opens to reduce the pressure difference between the inner and outer sashes. Since the pressure adjusting mechanism for reducing the pressure is provided, it is possible to eliminate the influence of breakage of the inner sash due to the wind pressure in the double sash, and to achieve an effect of improving safety.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of an opening device showing an embodiment of the present invention. FIG. 2 is a cross-sectional view of the opening device. FIG. 3 is an indoor side front view of an inner sash in the opening device. FIG. 4 is a vertical sectional view of an indoor sash. FIG. 5 is a cross-sectional view of the indoor sash. FIG. 6 is a perspective view of a magnet pressing member. [Description of Signs] 1 Double sash (opening device) 2 Opening 3 Inner sash 4 Outer sash 6 Frame 6a Upper frame 6b Lower frame 6c, 6d Vertical frames 7a, 7b Shoji 10 Frame 10a Upper frame 10b Lower frame 10c , 10d Vertical frames 11a, 11b Shoji 20 Pressure adjustment mechanism

Claims (1)

Claims: 1. A sash is provided inside and outside the opening of a building,
The inner and outer sashes each include a frame composed of an upper frame, a lower frame, and left and right vertical frames, and a shoji which is openably and closably provided on the frame, and a predetermined pressure is applied to the inner sash frame or the shoji. An opening device provided with a pressure adjusting mechanism for automatically opening a valve when a wind pressure is applied and reducing a pressure difference between the inside and the outside of an inner sash.