JP2010189956A - Window for natural ventilation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a window for natural ventilation capable of being forcedly opened by only a predetermined amount by a sash opening operating device and being further naturally opened from that state to improve movability of a sash. <P>SOLUTION: This window for natural ventilation is composed of a window frame 2 attached to an exterior wall of a room or a building and the sash 3 stored in the window frame 2, being opened with a lower frame 3B side sliding toward the outside, holding a standstill state in a balanced condition in which force is well balanced when opening the window, and adjusting its opening automatically by wind pressure from the outside or the inside from the standstill state. One end side of an arm member 20 is pivotally and turnably fixed on a lower frame 3B of the sash 3, and the other end side of it is pivotally and turnably fixed on a slider 26 supported to slide along the longitudinal direction of a lower frame 2B member. A spring member 24 for energizing the slider 26 into the direction for opening the sash is arranged on a window opening start side of the slider 26. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a window for performing natural ventilation such as wind ventilation and gravity ventilation while automatically adjusting the opening degree by wind pressure.

  In recent years, frequent ventilation has been recommended for measures such as sick house. Ventilation methods are broadly divided into natural ventilation and mechanical ventilation. The former natural ventilation is classified into wind ventilation and gravity ventilation. Wind ventilation opens two windows on different sides of the room and uses the positive pressure on the windward side and the negative pressure on the leeward side to ventilate, and the gravity ventilation is warmed. Ventilation is achieved using the principle that air rises lightly.

  As the window for performing natural ventilation, for example, a window described in Patent Document 1 and a window described in Patent Document 2 have been proposed. Specifically, in Patent Document 1, the window frame, a flat-plate type shoji part rotatably attached to the window frame via a horizontal rotation shaft, and at least one of an upper part or a lower part of the shoji part are installed. A position having a weight, and the horizontal rotation axis is centered on the rotation axis, and the rotational moment related to one center of gravity of the shoji part including the weight is balanced with the rotational moment related to the other center of gravity of the shoji part A door part opening means for opening the door part at a predetermined angle with respect to the window frame in a window located on the leeward side of the building or in a windless state by the action of the weight, and a building As a window located on the windward side of an object, there has been proposed a window provided with a shoji part closing means for closing the shoji part by wind pressure received on an outer surface.

  Moreover, in patent document 2, the natural wind ventilation window which has the window frame attached facing the exterior of a room or a building, the state which put in the window frame and closed the window, and the shoji which protrudes outward from the window frame, and opens A short length provided between the rigid frame on both sides of the window frame and the shoji screen, one end pivotally attached to the top of the saddle and the other end pivotally attached to the rigid frame at a position lower than the one end. In the state where the shoji is closed, each arm has a main arm and a sub-arm having one end pivotally attached to the middle part of the heel and the other end pivotally attached to the lower part of the heel frame and longer than the main arm. Each arm is oriented almost vertically, and the pivot position of each arm to the collar is located above the pivot position of each arm to the collar, and the pivot position of each arm to the collar is It is located on the indoor side of the center of gravity and opens gently by the weight of the shoji when there is no wind. Natural wind ventilation window to 閉窓 by the wind blowing from the part side toward the sliding door has been proposed.

Japanese Patent Laid-Open No. 10-18457 Japanese Patent No. 3777441

  However, in the case of the natural ventilation window described in Patent Document 1, the wind pressure that hits the upper side of the horizontal rotation axis and the wind pressure that hits the lower side cause rotation in opposite directions, and the difference in area causes the wind pressure to rotate the shoji. Effective area. Therefore, the weight becomes heavy and the whole inertia gravity increases. As a result, there are problems such as slow opening / closing operation in a light breeze and impact noise generated by contacting the stopper with a large force. Moreover, the upper side of the shoji protrudes to the indoor side, and there is a problem that the screen door cannot be provided and the appearance is impaired.

  On the other hand, in the case of the natural wind ventilation window described in the above-mentioned Patent Document 2, the window structure has a shoji that is opened outwardly from a window frame attached facing the outside of the room or building. It has the advantage that the appearance is excellent in that it does not protrude, and that the opening and closing operation of the shoji is performed sensitively in a light wind (low wind pressure). In the case of this natural wind ventilation window, the window is opened naturally from the state in which the shoji is closed, but the opening arm force that starts the shoji starting from the closed window is slightly inclined. And the rotational moment generated in the sub arm. However, since the force of this rotational moment is small, there is a problem that when the rust and backlash occur with the passage of time and the mobility of the hinge part deteriorates, the shoji does not naturally open and ventilation becomes impossible.

  In addition, when the shoji is closed by a gust of wind, an impact or impact sound is generated, and the maximum opening of the shoji is regulated by a stopper. As a result of this, the collision with the stopper is repeated, and an impact or impact sound is generated, and there is a possibility that the stopper portion may be damaged or malfunctioned.

  By the way, when the window structure is constructed by connecting the shojis in the lateral direction, the balance of the shoji screens is adjusted by the weight and weight of the shojis. Due to factors such as errors, there was a slight difference in the degree of opening of the shoji, and there was a problem that the shoji was not neatly arranged.

  Therefore, the first problem of the present invention is that the window frame attached to the outer wall of the room or the building and the lower frame side housed in the window frame squeeze out and open to the outside, and the balance of force was obtained at the time of opening the window. In a natural ventilation window consisting of a shoji that maintains a stationary state in an equilibrium state and automatically adjusts the opening according to the wind pressure from the outside or inside from this resting state, the opening / closing operation of the shoji is sensitive even in light winds When the window is forcibly opened by a predetermined amount, the window is naturally opened from that state, thereby improving the mobility of the shoji. Another object is to alleviate the impact and impact sound when the shoji is closed by a strong wind.

  The second problem is to make it possible to omit the stopper, and to reduce the occurrence of impact and impact sound even when the shoji is squeezed in the open direction in the natural ventilation state.

  The third problem is to provide a shoji opening adjustment mechanism that adjusts the degree of opening when the shoji is stationary without obstructing the natural opening and closing operation of the shoji. It is to be able to align with.

In order to solve the first problem, the present invention according to claim 1 is directed to a window frame attached to an outer wall of a room or a building, and a lower frame side accommodated in the window frame is opened outwardly and opened. In the natural ventilation window consisting of a shoji that maintains a stationary state in an equilibrium state where the force balance is achieved at the time of the window and automatically adjusts the opening degree by the wind pressure from the outside side or the inside side from this stationary state,
One end of the arm member is pivotally attached to the lower arm of the shoji, and the other end is pivotally attached to a slider that is slidably supported along the member longitudinal direction of the lower frame. And the natural ventilation window characterized by having arrange | positioned the spring member which urges | biases this slider to the shoji opening direction side is provided.

  In the first aspect of the invention, in the natural ventilation window, one end side of the arm member is pivotally attached to the lower arm of the shoji and the other end side is along the member longitudinal direction of the lower frame. A spring member pivotally attached to the slidably supported slider and urging the slider toward the shoji opening direction is provided.

  Therefore, when starting the shoji, the slider is moved by the biasing force of the spring member, and the arm member is pushed out by moving the pivot point on the window frame side of the arm member, and the lower arm of the shoji is pushed outward by a predetermined amount. Open the shoji. After that, the shoji starts to open naturally, and the shoji keeps a stationary state in an equilibrium state where the force is balanced.

  In the stationary state, the opening degree is automatically adjusted by the wind pressure from the outside or the inside on the shoji. That is, when wind pressure (positive pressure) is applied from the outside, the shoji turns in the closing direction, and the inflow air volume is reduced by narrowing the opening of the shoji. After that, when it becomes windless, the shoji will return to its original opening. Further, when the negative pressure increases or the airflow from the indoor side increases, the shoji rotates in the opening direction, and the amount of air flowing in is increased by increasing the opening of the shoji. After that, when the air flow decreases or no negative pressure is applied, the shoji returns to the original opening and adjusts the ventilation volume naturally. Even if the shoji is closed by the gust of wind in the natural ventilation state, the slider collides with the first spring member, and the impact force is relaxed and absorbed, so that the impact and impact sound are mitigated.

  In the case of the natural ventilation window, the force to start the shoji from the closed window is forcibly applied, so even if rust and backlash occur in the rotating part over time, the shoji can move well. It becomes possible to continue to maintain the state.

  According to a second aspect of the present invention, there is provided the natural ventilation window according to the first aspect, wherein the spring member is disposed on the opening start side of the slider.

  The invention according to claim 2 limits the arrangement position of the spring member.

  In order to solve the second problem, as a third aspect of the present invention, a spring member for biasing the slider toward the shoji closing direction is disposed on the opening end side of the slider. A natural ventilation window according to any one of 2 is provided.

  According to the third aspect of the present invention, a spring member for urging the slider toward the shoji closing direction is disposed on the opening end side of the slider. By arranging a spring member that urges the slider toward the sliding door closing direction on the opening end side of the slider, even if the sliding door is beaten in the opening direction under natural ventilation, this spring member It is possible to mitigate the occurrence of impact and impact sound. Also, the stopper can be omitted.

As the present invention according to claim 4, the natural ventilation window is located between the vertical frame of the window frame and the vertical frame of the shoji, and one end is pivotally attached to the upper part of the vertical frame and the other end is lower than the one end. A relatively short upper-side arm pivotally attached to the vertical frame, and one end pivotally attached to the middle of the vertical shaft and the other end pivotally attached to the vertical frame at a position lower than the one end. A lower arm with a long length,
In the closed state of the shoji, the upper arm is located on the outboard side with respect to the vertical frame side pivoting position, and the vertical frame side pivoting position is located on the indoor side of the center of gravity of the shoji. The window for natural ventilation according to any one of claims 1 to 3, wherein the lower arm is located on a vertical line passing through the vertical frame side pivot point or slightly on the indoor side. Is provided.

  In the invention of claim 4, in particular, in the closed state of the shoji, the upper arm is located on the outboard side with respect to the vertical frame side pivoted position, and the vertical frame side pivot is located on the outdoor side of the vertical frame side pivoted position. The landing position is located on the indoor side of the center of gravity of the shoji, and the lower arm is located on the vertical line passing through the vertical frame side pivoting position or slightly on the indoor side. The side arm is located on the vertical line passing through the vertical frame side pivot point or slightly on the indoor side.

Wherein in the upper arm, the moment M ₁ for rotating the upper arm outward direction by shoji weight acting on the vertical frame side pivot point occurs. Further, in the example shown in FIG. 10, the lower arm is oriented vertically, or is slightly inclined to the indoor side with respect to the vertical pivot point (upper side) contrary to the upper arm. Therefore, no moment is generated in the lower arm, or only a moment in the direction of turning in the room is generated. Moment M ₁ generated in the upper side arms, to act as a force to close the sliding door, the sash alone, Shoji in閉窓state is adapted to hold the closed state. Therefore, when starting the shoji, the slider is moved by the urging force of the first spring member to move the pivot point on the window frame side of the arm member, and the arm member is pushed out to push the lower arm of the shoji outward by a predetermined amount. Open the shoji.

When the shoji starts to open, the lower side arm slope outwardly, the moment M ₂ to pivot the sash to the lower side arm outward direction is generated accordingly. The increase rate of the moment M ₂ is larger than that of the upper arm by the length of the arm, reaches a predetermined opening degree, and when the relationship of M ₂ > M ₁ is established, the force in the direction to open the shoji Wins and the shoji starts opening automatically by its own weight. Thereafter, the shoji is kept stationary in an equilibrium state where the forces are balanced.

  As a fifth aspect of the present invention, a pulley is provided at a vertical frame position on the upper side of the vertical arm side pivoting position of the lower arm, and one end is fixed to the vertical arm pivot point of the lower arm. One end of a spring member is connected to the other end of the rope member around which the pulley is wound, and the other end of the spring member is connected to a vertical position adjustment mechanism that can adjust the vertical position. The window for natural ventilation in any one of Claims 1-4 is provided.

  According to the fifth aspect of the present invention, a pulley is provided at a vertical frame position on the upper side of the vertical arm side pivoting position of the lower arm, and one end is fixed to the vertical arm pivot point of the lower arm. Then, one end of a spring member was connected to the other end of the cable member around which the pulley was wound, and the other end of the spring member was connected to a vertical position adjustment mechanism that made it possible to adjust the position in the vertical direction. Therefore, by adjusting the vertical position of the other end of the spring member, it is possible to arbitrarily adjust the opening when the shoji is stationary. It becomes possible to make it.

  According to a sixth aspect of the present invention, the vertical position adjusting mechanism includes a feed screw member disposed in a vertical direction, a nut-like member screwed to the feed screw member, and a slide member that moves together with the nut-like member. The natural ventilation window according to claim 5, wherein the other end of the spring member is connected to the slide member.

  The invention described in claim 6 shows a specific structural example of the vertical position adjusting mechanism. If the feed screw mechanism is used, the opening degree of the shoji can be adjusted easily and accurately with the shoji open.

  As described above in detail, according to the present invention according to claims 1 and 2, the window frame attached to the outer wall of the room or building, and the lower wing side housed in the window frame squeeze out and open to the outside. In a natural ventilation window that consists of a shoji that maintains a stationary state in an equilibrium state that sometimes balances the force, and automatically adjusts the opening degree from the stationary state by the wind pressure from the outside or inside, in a light wind In addition to being sensitive to the opening and closing operation of the shoji, it is possible to improve the mobility of the shoji by opening the window naturally from that state if it is forcibly opened by a predetermined amount. . In addition, it is possible to reduce the impact and impact sound when the shoji is closed with a strong wind.

  According to the third aspect of the present invention, the stopper can be omitted, and even when the shoji is squeezed toward the opening direction in a natural ventilation state, it is possible to alleviate the occurrence of impact and impact sound.

  In particular, according to the invention according to claim 5, even when a sliding window is provided by providing a shoji opening adjustment mechanism that adjusts the degree of opening when the shoji is in a stationary state without hindering the natural opening and closing operation of the shoji. It is possible to arrange the shoji screens arranged neatly.

It is an inside view of window 1 for natural ventilation. It is the II-II arrow directional view (longitudinal sectional view) of FIG. It is the III-III arrow directional view (cross-sectional view) of FIG. It is a one-side front view which shows the connection state of the shoji 3 and the window frame 2. FIG. FIG. 5 is a view taken along line VV in FIG. 4. It is the VI-VI line arrow directional view of FIG. It is a longitudinal cross-sectional view which shows the connection state of the shoji 3 and the window frame 2. FIG. It is a VIII-VIII arrow directional view of FIG. The shoji opening device 17 is shown, (A) is a plan view and (B) is a front view. It is a closed window state figure for demonstrating the operation state of the shoji. It is a XI-XI line arrow line view of FIG. It is an open operation state diagram for demonstrating the operating state of the shoji. FIG. 13 is a view taken along line XIII-XIII in FIG. 12. It is a balance state diagram for demonstrating the operating state of the shoji. It is the XV-XV line arrow figure of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[Structure of natural ventilation window 1]
1 is an interior view of the natural ventilation window 1, FIG. 2 is a view taken along the line II-II in FIG. 1, and FIG. 3 is a view taken along the line III-III in FIG.

  As shown in FIGS. 1 to 3, the natural ventilation window 1 has an upper frame 3A, a lower frame 3B, and an upper frame 2A, a lower frame 2B, and vertical frames 2C, 2D, The vertical shovels 3C and 3D are assembled in four directions, and the shoji 3 in which the glass G is fitted therein is accommodated, and the lower shovel 3B side of the shoji 3 is rolled out and opened.

  The supporting structure of the shoji 3 is such that one end is pivotally attached to the upper part of the vertical eaves 3C and 3D and the other end is the one end between the vertical frames 2C and 2D of the window frame 2 and the eaves 3C and 3D of the shoji 3, respectively. The upper side arms 4 and 4 of relatively short length pivotally attached to the vertical frames 2C and 2D at the lower position, and one end pivotally attached to the middle part of the vertical rods 3C and 3D, and the other end from the one end The lower arms 5 and 5 are relatively long and pivotally attached to the vertical frames 2C and 2D at the lower position.

  This will be described in more detail below.

  The window frame 2 is formed by four-way assembly of an upper frame 2A, a lower frame 2B, and vertical frames 2C and 2D made of an aluminum alloy to form a frame body. Each of the upper frame 2A, the lower frame 2B, and the vertical frames 2C, 2D includes seal holding pieces 2a, 2b, 2c, and 2d at positions closer to the indoor side, and a solid seal 6 at the tip.

  The shoji 3 is composed of an upper iron 3A, a lower iron 3B, and vertical irons 3C, 3D, which are also made of an aluminum alloy, and a glass G is fitted and supported therein. In the state in which the shoji 3 is closed, the airtightness is maintained by the indoor side surfaces of the upper and lower cages 3A, 3B and 3C, 3D coming into contact with the solid seal 6.

  As shown in FIG. 4, reinforcing base plates 7A and 7B are disposed on the side surface of the vertical rod 3C (3D), and a reinforcing base plate 8 is disposed on the inner surface side of the vertical frame 2C (2D). Install a pivot base member that also serves as a reinforcement. For installation, a backing material is arranged on the opposite side through the window member to fix the screws.

As shown in FIG. 5, the upper arm 4 is pivotally attached to the reinforcing base plate 7 </ b> A at the upper end serving as the pivot point 3 </ b> C (3 </ b> D) side pivot point A, A lower end serving as a pivot point B is pivotally attached to the reinforcing base plate 8. At this time, in the upper arm 4 is closed, as also shown in FIG. 9, as well as positioned only on the outdoor side shift amount S ₁ than vertical frame side pivot point A longitudinal frame side pivot point B The vertical frame side pivot point B is located on the indoor side of the center of gravity K of the shoji.

  On the other hand, as shown in FIG. 6, the lower arm 5 is pivotally attached to the reinforcing base plates 7A and 7B at the upper end serving as the vertical pivot 3C (3D) side pivot point C. (2D) The lower end serving as the side pivot point D is pivotally attached to the reinforcing base plate 8. At this time, when the lower arm 5 is in the closed state, as shown in FIG. 10, the vertical arm side pivot point C is on the vertical line passing the vertical frame side pivot point D or the upper arm 4 On the contrary, it is slightly biased to the indoor side. The amount of deviation is 1 to 10 mm, preferably 1 to 5 mm. In the illustrated example, the vertical pivot side pivot point C is biased to the indoor side by 1 mm from the vertical frame pivot point D.

  As shown in FIG. 4, the lower arm 5 is formed by connecting two members with screws so as to be applicable to windows of different sizes. Yes. The mating surfaces are subjected to serrations, and they are engaged so that they do not shift vertically.

  In the natural ventilation window 1, as shown in FIG. 7, a pulley 9 is provided at a vertical frame position on the upper side of the vertical arm side pivot point C of the lower arm 5, and one end is disposed on the lower side. One end of the spring member 11 is connected to the other end of the wire 10 on which the arm 9 is anchored to the longitudinal pivot point C of the arm 5 and the pulley 9 is wound, and the other end of the spring member 11 is positioned in the vertical direction. It is connected to a vertical position adjustment mechanism 12 that can be adjusted. The spring member 11 functions as a tension spring, and is a force that closes the shoji 3 along the wire direction to the longitudinal pivot point C of the lower arm 5 via the wire 10 according to the opening degree of the shoji 3. A pulling force P is applied.

  The vertical position adjusting mechanism 12 includes a feed screw member 13 arranged in the vertical direction, a nut-like member 14 screwed to the feed screw member 13, and a slide member 15 that moves together with the nut-like member 14. A feed screw mechanism is provided, and the other end of the spring member 11 is connected to the slide member 15. The slide member 15 has a through-hole through which the feed screw member 13 penetrates in the vertical direction, and has a structure in which the nut-like member 14 is rotatably held in a lateral groove crossing the through-hole. By rotating the member 14 manually, the member 14 moves up and down together with the nut-like member 14 so that the pulling force P can be adjusted.

  On the other hand, a shoji opening device 17 for opening the shoji 3 by pushing the lower arm 3B of the shoji 3 to the outside by a predetermined amount with respect to the lower frame 2B of the window frame 2 is provided. As shown in FIG. 9, the shoji opening device 17 includes a lower frame side metal fitting 18 fixed to the lower frame 2B of the window frame 2, and a lower eave side metal fitting 19 fixed to the lower eaves 3B of the shoji 3. And an arm member 20 for connecting them. The lower frame side metal fitting 18 starts opening a window so that the slide guide 23, the fixing metal fittings 21 and 22 to the lower frame 2B provided at both ends of the slide guide 23, and the slide guide 23 are fitted externally. The first spring member 24 provided at the side end portion, the second spring member 25 provided at the end portion of the opening window end side so as to fit the slide guide 23, and the slide guide 23 are engaged. The slider 26 is movable along the slide guide 23 and includes a slider 26 disposed between the first spring member 24 and the second spring member 25. The lower heel side metal fitting 19 includes a fixing metal fitting 28 for the lower heel 3B and a coil spring 30 interposed between the arm member 20 and the lower heel side metal fitting 19. One end of the arm member is pivotally attached to a slider 26 of the lower frame side metal fitting 18 by a shaft member 27, and the other end is provided with a coil spring 30 with respect to the fixing metal fitting 28 of the lower heel side metal fitting 19. It is pivotally mounted with a pivot therebetween. The coil spring 30 is for absorbing a height difference generated between the lower collar 3B and the lower frame 2B in accordance with the opening of the window.

  The required number of the shoji opening device 17 is provided according to the acting force required to push the lower arm toward the outside by a predetermined amount against the weight of the shoji 3. In the illustrated example, as shown in FIG.

[Operation explanation of shoji 3]
(Closed window of shoji 3)
In the closed window state shown in FIGS. 10 and 11, the upper arm 4 is centered on the vertical frame side pivot point B by the shoji weight w (W / 4) acting on the vertical axis side pivot point A. As a result, a moment M ₁ (w · S ₁ ) for rotating the upper arm 4 outward is generated. Further, in the lower arm 5, because it is oriented vertically, or on the contrary to the upper arm, the downside pivot point (upper side) is slightly inclined to the indoor side, No moment is generated in the lower arm 5 or only a moment in the direction of turning in the room is generated. The moment M ₁ generated in the upper arm 4 acts as a force in a direction in which the lower arm 3B side of the shoji 3 is closed around the longitudinal arm pivot point C of the lower arm. 3 alone has a structure in which the closed state is maintained, but since the lower arm 3B of the shoji 3 is automatically pushed out by the shoji opening operation device 17, the locking device is used to keep the shoji 3 in the closed state. It is necessary to lock by (not shown).

(Opening operation of shoji 3)
As shown in FIGS. 12 and 13, when the locking device is unlocked, the shoji opening operation device 17 causes the first spring member 24 to urge the slider 26 toward the shoji opening direction, so that the arm member 20 protrudes. As a result, the shoji 3 starts to open. Along with this, the lower arm 5 tilts outward, and an opening direction moment M ₂ (w · S ₂ ) that causes the shoji 3 to rotate outward is also generated in the lower arm 5. In addition, a closing direction moment M ₄ (P · S ₄ ) that causes the shoji 3 to close in the direction of closing the shoji 3 by the wire tension P is generated at the downside pivot point C of the lower arm 5. Further, the center of gravity K shoji 3 is moved to the outdoor side than stile side pivot point C of the lower arm 5, the closing direction moment M _{3 (W} · S ₃₎ which acts in a direction to close the sliding door 3 is appear.

The increasing rate of the moment M ₂ of the lower arm 5 is larger than that of the upper arm 4 due to the long arm length, and becomes a predetermined opening (L1), and the relationship of M ₂ > M ₁ + M ₃ + M ₄ is established. Then, the force in the direction in which the shoji 3 is opened further exceeds the force in the closing direction, and the shoji 3 automatically starts to open the window. At this stage, the slider 26 of the shoji opening device 17 is separated from the first spring member 24. Therefore, the pushing amount of the shoji lower heel 3B by the shoji opening operation device 17 is preferably set to an amount with a slight margin at the position where the shoji 3 starts to automatically open.

(Balance state of shoji 3)
As shown in FIGS. 14 and 15, when the shoji 3 starts to automatically open and reaches a predetermined opening (L2), the closing direction moments M ₁ , M ₃ , M acting in the direction of closing the shoji 3 are closed. ₄ increases and balances with the opening direction moment M ₂ which acts in the direction which opens the shoji 3. That is, ΣM _1-4 = 0 and the stationary state is maintained in an equilibrium state in which the force is balanced.

  After that, in this stationary state, the opening degree is automatically adjusted by the wind pressure from the outside or inside of the shoji 3. That is, when wind pressure (positive pressure) is applied from the outside, the shoji 3 rotates in the closing direction, and the amount of air flowing in is reduced by narrowing the opening of the shoji 3. After that, when the windless state is reached, the shoji 3 returns to the original opening. Further, when the negative pressure increases or the airflow from the indoor side increases, the shoji 3 rotates in the opening direction, and the amount of air flowing in is increased by increasing the opening of the shoji 3. Thereafter, when the air flow decreases or no negative pressure is applied, the shoji 3 returns to the original opening.

  Further, even if the shoji 3 is closed by a gust of wind in a natural ventilation state, the slider 26 collides with the first spring member 24, and the impact force is alleviated and absorbed, so that the impact and impact sound are alleviated. At the same time, the first spring member 24 pushes the lower arm 3B of the shoji 3 outward, so that the shoji 3 returns to its original opening.

  Further, even when the shoji 3 is squeezed in the opening direction in the natural ventilation state, the impact force is relieved and absorbed by the second spring member 25, so that the impact and impact sound are relieved.

[Other examples]
(1) In the above embodiment, a single window has been described. However, the present invention can be similarly applied to a continuous window in which the shoji 3, 3,. In this case, by adjusting the opening degree of the shoji 3 by the vertical position adjusting mechanism 12, each shoji 3, 3, ... can be neatly aligned.
(2) In the natural ventilation window, by adjusting the first spring member 24 and the second spring member 25 with different spring elastic forces and lengths, adjustment of the urging force and adjustment of the operating range of the urging force can be performed. It becomes possible.

  DESCRIPTION OF SYMBOLS 1 ... Window for natural ventilation, 2 ... Window frame, 3 ... Shoji, 4 ... Upper arm, 5 ... Lower arm, 9 ... Pulley, 10 ... Wire, 11 ... Spring member, 12 ... Vertical position adjustment mechanism, 13 ... Feed screw member, 14 ... nut-like member, 15 ... slide member, 17 ... shoji opening operation device, 18 ... lower frame side metal fitting, 19 ... lower collar side metal fitting, 20 ... arm member, 23 ... slide guide, 24 ... first Spring member, 25 ... second spring member, 26 ... slider

Claims (6)

A window frame attached to the outer wall of the room or building, and the lower side of the window frame that is housed in this window frame rolls outward and opens, and maintains a stationary state in an equilibrium state that balances the force when opening the window. In a natural ventilation window consisting of a shoji that automatically adjusts the opening degree by the wind pressure from the outside or inside from a stationary state,
One end of the arm member is pivotally attached to the lower arm of the shoji, and the other end is pivotally attached to a slider that is slidably supported along the member longitudinal direction of the lower frame. A natural ventilation window comprising a spring member for urging the slider toward the sliding door opening direction.   The natural ventilation window according to claim 1, wherein the spring member is disposed on a window opening start side of the slider.   The natural ventilation window according to any one of claims 1 and 2, wherein a spring member for urging the slider toward the shoji closing direction is disposed on the opening end side of the slider. The natural ventilation window has a relative position in which one end is pivotally connected to the upper part of the vertical fence and the other end is pivotally attached to the vertical frame at a position lower than the one end, between the vertical frame of the window frame and the vertical fence of the shoji. An upper arm having a relatively short length, and a lower arm having a relatively long length having one end pivotally attached to the middle portion of the vertical shaft and the other end pivotally attached to the vertical frame at a position lower than the one end. Have
In the closed state of the shoji, the upper arm is located on the outboard side with respect to the vertical frame side pivoting position, and the vertical frame side pivoting position is located on the indoor side of the center of gravity of the shoji. The window for natural ventilation according to any one of claims 1 to 3, wherein the lower arm is located on a vertical line passing through the vertical frame side pivot point or slightly on the indoor side. .   A pulley is provided at a vertical frame position on the upper side of the vertical arm side pivoting position of the lower arm, one end is connected to a vertical arm pivot point of the lower arm, and the pulley is wound. 5. One end of a spring member is connected to the other end of the rope member, and the other end of the spring member is connected to a vertical position adjustment mechanism that can adjust the position in the vertical direction. Natural ventilation windows.   The vertical position adjusting mechanism is a feed screw mechanism including a feed screw member arranged in the vertical direction, a nut-like member screwed to the feed screw member, and a slide member that moves together with the nut-like member, The natural ventilation window according to claim 5, wherein the other end of the spring member is connected to the slide member.

Images