JP2019203613A - Ventilation device - Google Patents

Abstract

To prevent blow-in of rain water into a room when wind and rain are strong, while suppressing increase of a cross-sectional area of a frame member of a window frame.SOLUTION: A ventilation device includes a vertical frame 10 (frame member) of a window frame 4, and a ventilation structure disposed on the vertical frame 10. The vertical frame 10 has a hollow main portion 11 extended in a longitudinal direction and having a closed cross-sectional shape. The main portion 11 has an outdoor-side wall portion 11a and an indoor-side wall portion 11b. The ventilation structure includes an outdoor-side ventilation port 17 formed on the outdoor-side wall portion 11a, an indoor-side ventilation port 18 formed on the indoor-side wall portion 11b and positioned at an upper part of the outdoor-side ventilation port 17, and a shutter plate 47. The shutter plate 47 is disposed in an internal space 15 of the main portion 11 between the outdoor-side ventilation port 17 and the indoor-side ventilation port 18, and rotatably supported by the main portion 11. The shutter plate 47 permits circulation of the air in the internal space 15 when a wind pressure is weak, and blocks the circulation of the air in the internal space 15 by the wind pressure, when the wind pressure is strong.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a ventilation device provided in a window frame.

In the opening frame that borders the opening of the wall and the window frame of the sash window that is slidably supported or fitted to the opening frame, a ventilation structure is provided in the frame member that is a part of the frame. Is known.
The ventilation structure includes a type in which a ventilation path is simply formed in a frame member for natural ventilation and a type in which a manual ventilation control device is incorporated in the frame member.

In the case of natural ventilation, rainwater may be blown indoors when the wind and rain are strong.
In addition, when a manual ventilation control device is incorporated, it is necessary to manually close the ventilation path of the ventilation control device when the wind and rain are strong. In addition, when the wind and rain become strong with the air passage open, rainwater may be blown indoors as in the case of natural ventilation.

  In Patent Documents 1 and 2 to be described later, a ventilation control device is provided on the indoor side of the frame member, and a shutter plate is provided on the outdoor side so as to be rotatable. When the wind and rain are strong, the shutter plate is rotated by wind pressure. The air passage is closed to compensate for the above two types of drawbacks.

WO2015 / 198416 JP, 2006-217642, A JP 2006-328802 A

In the ventilators of Patent Documents 1 and 2, a ventilation path is formed so that air flows in a direction orthogonal to the frame member, and a shutter plate is disposed in the ventilation path, so that the cross-sectional area of the frame member increases. End up. Further, in Patent Documents 1 and 2, since the ventilation control device is arranged side by side with the shutter plate in a direction orthogonal to the frame member, the cross-sectional area of the frame member is further increased.
In the ventilator of Patent Document 3, as in the present invention, the frame member is formed with an outdoor side ventilation port and an indoor side ventilation port that are spaced apart in the longitudinal direction, and air from the outdoor side ventilation port is the frame member. It flows through the interior space from the indoor ventilation opening. However, a shutter plate that operates by wind pressure is not disclosed.

  The present invention has been made to solve the above problems, and in the ventilation device, the frame member forms a part of the window frame and extends linearly, and the ventilation structure provided in the frame member, The frame member has a main portion that extends in the longitudinal direction and is hollow with a closed cross-sectional shape, the main portion includes an outdoor side wall portion and an indoor side wall portion, and the ventilation structure includes the outdoor side wall portion. An outdoor side ventilation port formed on the indoor side wall and spaced apart from the outdoor side ventilation port in the longitudinal direction of the frame member, the outdoor side ventilation port and the indoor side ventilation A shutter plate disposed in the internal space of the main portion between the mouth and rotatably supported by the main portion, and the shutter plate is provided in the internal space of the main portion when the wind pressure is low. When air flow is allowed and wind pressure is strong It is characterized by blocking the flow of air in the internal space of the main unit by the wind pressure.

  According to the above configuration, when the wind and rain are strong, the shutter plate blocks the air flow in the internal space of the main part of the frame member, so that rainwater can be prevented from being blown indoors. In addition, since the internal space of the main portion extending in the longitudinal direction of the frame member serves as a ventilation path, and the shutter plate is disposed in this ventilation path, the cross-sectional area of the frame member is not increased.

Preferably, the shutter plate is formed such that a first portion near the outdoor side ventilation opening is longer than a second portion near the indoor side ventilation port as viewed from the rotation axis, and the shutter plate When the air pressure is weak, the posture maintaining means maintains the posture along the longitudinal direction of the frame member to allow the air to flow in the internal space of the main part. When the wind pressure is strong, the posture maintaining means is To counteract the flow of air in the internal space of the main part.
According to the above configuration, since the shutter allows air to flow in a posture along the longitudinal direction of the frame member, smooth air flow can be performed, and the pressure receiving area of the first portion and the second portion can be reduced. Due to the difference, the air flow can be reliably blocked.

Preferably, the posture maintaining means includes a spring that urges the shutter plate to rotate and a stopper that restricts the rotation of the shutter plate in the urging direction of the spring.
According to the above configuration, the shutter plate can stably maintain a posture that allows air to flow. Moreover, the wind pressure at the time of the operation | movement in which a shutter board interrupts | blocks the flow of air can be suitably set with a spring.

Preferably, the apparatus further includes a shutter unit, and the shutter unit includes a unit main body disposed in the internal space of the main part, the shutter plate rotatably supported by the unit main body, and the unit main body. And the provided spring and the stopper.
According to the above configuration, since the shutter unit assembled in advance is installed on the frame member, the installation work of the shutter plate, the spring and the stopper can be simplified.

Preferably, an attachment port is formed between the outdoor side ventilation port and the indoor side ventilation port on the indoor side wall portion of the main part, and a flange is formed on the indoor side of the unit body. The shutter unit is disposed in the internal space of the main part with the unit main body inserted into the mounting opening and the flange portion fixed to the indoor side wall.
According to the said structure, the installation operation | work of a shutter unit can be simplified further.

Preferably, the main part has the outdoor side wall part and the indoor side wall part, and has first and second wall parts facing the longitudinal direction of the frame member and the direction orthogonal to the indoor outdoor direction, The cross-sectional shape is a long and narrow rectangle in the opposing direction of the first and second wall portions, and a convex portion that is located closer to the first wall portion and protrudes indoors is formed on the indoor side wall portion. The mounting opening is formed in a region where the convex portion is not formed in the indoor side wall portion, and the unit body has a cylindrical shape with a rectangular cross section and approaches the second wall portion. The first portion is disposed away from the first wall portion and has an opening facing the first wall portion. When the shutter plate rotates in the closing direction, the first portion is the opening portion. Projecting from the first wall portion.
According to the above configuration, even when the shutter unit is installed away from the first wall and close to the second wall, the first portion of the shutter plate protrudes from the opening of the unit body and hits the first wall. Thus, air circulation can be blocked.

The said frame member is a vertical frame extended in an up-down direction, and the outdoor side ventilation port is arrange | positioned upwards with respect to the said outdoor side ventilation port.
According to the above-described configuration, it is possible to prevent rainwater from the outdoor side ventilation port from flowing toward the shutter plate through the wall of the main part due to the action of gravity in a state where the shutter plate blocks air flow. .

Preferably, the indoor side wall portion of the main portion is provided with a ventilation adjusting device that adjusts the air flow through the indoor ventilation port.
According to the said structure, optimal ventilation is realizable with a ventilation control apparatus. In addition, since the ventilation control device and the shutter plate are arranged apart from each other in the longitudinal direction of the frame member, the cross-sectional area of the frame member is not increased.

Preferably, the frame member has an accommodation space that extends in the longitudinal direction of the frame member and is disposed indoors from the main portion and is opened indoors, and the ventilation control device is disposed in the accommodation space. The housing space is covered with a cover member extending in the longitudinal direction of the frame member, and an operating port is formed in the cover member at a location corresponding to the operation knob of the ventilation control device. An auxiliary vent is formed at a location corresponding to the indoor vent.
According to the said structure, a favorable external appearance can be maintained by covering the storage space of a frame member and a ventilation control apparatus with a cover member.

  According to the present invention, it is possible to prevent rainwater from being blown indoors when wind and rain are strong, and to suppress an increase in the cross-sectional area of the frame member of the window frame.

It is the front view which looked at the window provided with the ventilator which concerns on one Embodiment of this invention from the indoor side, (A) shows the state which attached the cover member, (B) shows the state which removed the cover member, respectively. . It is the rear view which looked at the same window from the outdoor side. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. It is a perspective view which decomposes | disassembles and shows the vertical frame, ventilation control apparatus, and shutter unit which comprise the said ventilation apparatus. It is a longitudinal cross-sectional view which shows the principal part of the said ventilation control apparatus. It is a cross-sectional view of the intermediate part of the cover member. It is a perspective view which decomposes | disassembles and shows the said shutter unit. It is a perspective view of the shutter unit. It is a perspective view which shows the state which the shutter plate of the said shutter unit rotated against a spring. It is a longitudinal cross-sectional view which shows the shutter unit in a vertical frame, and shows the state in which the outdoor wind pressure is weak and the shutter board | plate has permitted distribution | circulation of air. It is a longitudinal cross-sectional view which shows the shutter unit in a vertical frame, and shows the state which the outdoor wind pressure is strong and the shutter board rotates and the distribution | circulation of air is interrupted | blocked.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, a rectangular opening 1 a formed in a wall 1 of a building is bordered by an opening frame 2, and a sash window 3 is fixed to the opening frame 2 in a fitted state. Has been.

  The opening frame 2 has an upper frame 2a and a lower frame 2b made of an aluminum alloy extrusion mold, and left and right vertical frames 2c and 2d. The sash window 3 has a rectangular window frame 4 and a glass plate 5 fitted in the window frame 4. Similarly to the opening frame 2, the window frame 4 also has an upper frame 4a and a lower frame 4b, and left and right vertical frames 4c and 4d made of an aluminum mold.

  The window frame 4 of the present embodiment further has an additional vertical frame 10 (frame member) fixed along the left vertical frame 4 c, and the left side portion of the vertical frame 10 is the left side of the opening frame 2. It is inserted in the vertical frame 2c.

  The vertical frame 10 is also made of an extruded material made of an aluminum alloy, and has a hollow main portion 11 that extends in the longitudinal direction of the vertical frame 10 and has a rectangular shape with a closed cross section as shown in FIG. The main part 11 has an outdoor side wall part 11a and an indoor side wall part 11b that are parallel to each other, and is parallel to each other and faces in the left-right direction (the longitudinal direction of the vertical frame 10 and the direction orthogonal to the outdoor direction). It has the part 11c and the 2nd wall part 11d. The main portion 10 has an internal space 15 closed by the wall portions 11a, 11b, 11c, and 11d.

In this embodiment, the main part 11 has a rectangular cross-sectional shape elongated in the left-right direction. The vertical frame 10 further includes a convex section 12 having a small cross-sectional rectangle projecting indoors from the left end of the indoor side wall section 11b of the main section 11 and a projecting wall section 13 projecting indoors from the right end of the main section 11. Yes.
A housing space 16 having an open indoor side is formed between the convex portion 12 and the wall portion 13.

  The accommodation space 16 of the vertical frame 10 is covered with a cover member 20 made of a push-bump. The cover member 20 is made of an extruded material made of an aluminum alloy and has a pair of left and right elastic claws 21 on the back surface (surface on the outdoor side). When the cover member 20 is pushed into the housing space 16 of the vertical frame 10 from the indoor side, the elastic claw 21 moves over the protrusions 12a and 13a formed on the convex portion 12 and the protruding wall portion 13 with elastic deformation. Match. In this way, the cover member 20 is attached to the vertical frame 10.

In the present embodiment, the vertical frame 10 is provided with a ventilation structure. Details will be described below.
As shown in FIG. 1B and FIG. 2, an outdoor side ventilation port 17 is formed at the lower end portion of the outdoor side wall portion 11 a of the main portion 11 of the vertical frame 10. The outdoor side ventilation openings 17 extend in the left-right direction, and are formed in large numbers at intervals in the up-down direction.

As shown in FIG. 4, a punching metal 25 that covers the outdoor-side ventilation port 17 is disposed inside the outdoor side wall portion 11 a of the main portion 11. The punching metal 25 is supported along the inner surface of the plate portion on the outdoor side of the mounting member 26 having a cylindrical shape with a rectangular cross section, and the mounting member 26 is fitted and fixed to the lower end portion of the main portion 11. Accordingly, the punching metal 25 is attached to the main portion 11.
The outdoor air flows into the internal space 15 of the main part 11 through the outdoor side ventilation opening 17, the opening 26 a formed in the plate part on the outdoor side of the mounting member 26, and the numerous pores of the punching metal 25. ing.

  As shown in FIG. 5, in the indoor side wall portion 11b of the main portion 11 of the vertical frame 10, an indoor side ventilation opening 18 elongated in the vertical direction is formed in a region where the convex portion 12 is not formed. The indoor vent 18 is disposed above the outdoor vent 17, and the vents 17 and 18 are spaced apart in the vertical direction (longitudinal direction of the vertical frame 10).

A ventilation control device 30, which is unitized so as to cover the indoor side ventilation port 18, is attached to the indoor side wall portion 11 b of the main portion 11 of the vertical frame 10 by screws, and is accommodated in the accommodation space 16.
As shown in FIGS. 5 and 6, the ventilation control device 30 includes an elongated device main body 31, an operation knob 32 supported at the lower end portion of the device main body 31 so as to be rotatable in the vertical direction, and the operation knob 32. Is provided with a slider 33 that slides in the up-and-down direction according to the rotating operation, an operation plate 34 having a lower end coupled to the slider 33, and a cam member (not shown) fixed to the apparatus main body 31. The operation plate 34 is supported by the apparatus main body 31 so as to be slidable in the vertical direction and to be rotatable around a rotation axis extending vertically.

  A vent 31x is formed in the outdoor wall 31a of the apparatus main body 31 at a position facing the indoor vent 18 of the vertical frame 10, and a large number of indoor walls 31b as shown in FIG. The vent 31y is formed.

When the operation knob 32 is tilted as shown in FIGS. 5 and 6, the operating plate 34 approaches the indoor wall 31 b of the apparatus main body 31 to close the vent 31 y, and thereby the indoor ventilation of the vertical frame 10. Air circulation at the mouth 18 is blocked.
When a finger is put on the operation knob 32 and rotated so as to be raised in the direction of the arrow (indoor direction) shown in FIG. 6, the slider 33 slides downward and the operation plate 34 slides in the same direction. In the course of this sliding, the operating plate 34 is rotated by the cam action of the cam member and is separated from the wall 31b on the indoor side of the apparatus main body 31, whereby the vent 31y is opened and air flows through the indoor vent 18. Is possible.

The cover member 20 covers the ventilation control device 30 and a shutter unit 40 described later.
The cover member 20 is close to the wall 31b on the indoor side of the device main body 31 of the ventilation control device 30, and an operation port 27 is formed at a position corresponding to the operation knob 32 as shown in FIG. In addition, a large number of auxiliary vents 28 extending in the left-right direction are formed at intervals in the vertical direction at positions corresponding to the vents 31y of the ventilation control device 30.
When the ventilation control device 30 is opened, a finger is inserted through the operation port 27 and the operation knob 32 is raised. The operation knob 32 in the raised state protrudes from the operation port 27 to the indoor side.

  As shown in FIG. 7, a pair of left and right support protrusions 22 having an L-shaped cross section are formed on the back surface of the cover member 20. A filter 29 that covers the auxiliary vent 28 is supported between the support protrusions 22.

  As shown in FIG. 5, in the region where the convex portion 12 of the indoor side wall portion 11 b of the main portion 11 of the vertical frame 10 is not formed, at an intermediate position between the outdoor side ventilation port 17 and the indoor side ventilation port 18. A mounting port 19 is formed. The shutter unit 40 is inserted from the attachment port 19 and disposed in the internal space 15 of the main portion 11.

  As shown in FIGS. 8 to 12, the shutter unit 40 includes a unit main body 41 having a cylindrical shape with a rectangular cross section. The unit main body 41 includes a main plate 42 bent in a U-shaped cross section, auxiliary plates 43 and 44 fixed to the inner surfaces of the upper and lower ends of the main plate 42, and a mounting plate 45 fixed to the indoor side plate portion of the main plate 42. Have. An opening 46 is formed between the auxiliary plates 43 and 44.

  Packing 42a, 42b is attached to the outer periphery of the upper end part and lower end part of the main plate 42, respectively. The mounting plate 45 is fixed to the indoor side plate portion of the main plate 42 via packings 42a and 42b. The upper and lower ends of the mounting plate 45 protrude vertically from the main plate 42 and are provided as flanges 45a and 45b.

  A shutter plate 47 is supported inside the unit main body 41 so as to be rotatable about a rotation axis extending in the indoor and outdoor directions. More specifically, as shown in FIGS. 11 and 12, cylindrical bearing portions 47a are fixed to both side edges of the shutter plate 47 in the width direction (indoor / outdoor direction). The shutter plate 47 is rotatably supported by the unit main body 41 by fitting the bearing portion 47a to a hollow shaft portion 48 fixed to the main plate portion 42.

The shutter plate 47 includes a first portion 47x below the rotation axis (outdoor vent 17 side) and a second portion 47y above the rotation axis (indoor vent 18 side). Yes. The first portion 41x is longer than the second portion 47y.
A packing 47b is attached to the left side surface (first wall portion 11c side surface) of the tip portion of the first portion 47x, and the right side surface (second wall portion 11d side surface) of the second portion 47y. A packing 47c is also attached to the surface).

  The shutter plate 47 is urged counterclockwise in FIGS. 11 and 12 by a torsion coil spring 49 (spring) housed in a hollow shaft portion 48. The coil portion of the torsion coil spring 49 is supported by a support convex portion 48a formed at the center of the shaft portion 48, and one end is locked by a locking portion 48b projecting radially inward from the cylindrical portion of the shaft portion 48, The other end is locked to a locking portion 47 b formed on the bearing portion 47 a of the shutter 47.

  Both end portions of the upper auxiliary plate 43 of the unit main body 41 are bent toward the internal space of the unit main body 41, and these end portions are provided as stoppers 43a. A packing 43b is attached to the right side surface of the stopper 43a.

  As shown in FIG. 5, by inserting the unit main body 41 into the mounting opening 19 of the vertical frame 10 and fixing the flange portions 45a and 45b to the indoor side surface of the indoor side wall portion 11b with screws, the shutter unit 40 is mainly used. It is accommodated in the internal space 15 of the part 11. In the mounted state of the shutter unit 40, the right side plate portion of the main plate 42 hits the second wall portion 11d of the main portion 11 via the packings 42a and 42b, and the outdoor side plate portion of the main plate 42 passes the packings 42a and 42b. Therefore, the shutter unit 40 is airtightly attached to the right part of the main part 11 over three surfaces.

  In the mounted state of the shutter unit 40, the shutter unit 40 is separated from the first wall portion 11c of the main portion 11, and the opening 46 faces the first wall portion 11c. The rotation axis of the shutter 47 is arranged to be biased toward the second wall portion 11b.

  In the above ventilator, when the outdoor wind pressure is weak, as shown in FIG. 11, the tip of the second portion 47y of the shutter plate 47 abuts against the stopper 43a via the packing 43b, so that the shutter plate 47 is counteracted. The rotation in the clockwise direction is restricted, has a posture along the vertical direction (longitudinal direction of the vertical frame 10), and allows air to flow in the internal space 15. Therefore, outdoor air is taken indoors through the outdoor side ventilation port 17, the internal space 15 of the main part 11, the indoor side ventilation port 18, the ventilation ports 31 x and 31 y of the ventilation control device 30, and the auxiliary ventilation port 28 of the cover member 20. Can be supplied.

  Normally, the ventilation control is performed by operating the operation knob 32 of the ventilation control device 30. That is, if the operation plate 34 of the ventilation control device 30 is set to the closed position by the operation of the operation knob 32, outdoor air is blocked by the operation plate 34 and ventilation is not performed. If the operation plate 34 is set to the open position, Ventilation can be performed.

  When the outdoor wind and rain is strong, the strong wind pressure acts on the shutter plate 17 from the outdoor side ventilation port 17, whereby the shutter plate 47 rotates clockwise against the urging force of the torsion coil spring 48. By this rotation, the second portion 47y of the shutter plate 47 moves away from the stopper 43a toward the second wall portion 11d, and the tip portion of the shutter plate 47 contacts the right plate portion of the main plate 42 through the packing 47c. On the other hand, the first portion 47x of the shutter 47 protrudes from the opening 46 of the shutter unit 40, and the tip of the first portion 47x hits the first wall portion 11c via the packing 47b. As a result, air circulation in the internal space 15 of the main part 11 can be blocked.

  Therefore, even when the operation plate 34 is opened when the wind and rain are strong, the shutter plate 47 can block the internal space 15 of the main portion 10 as described above, so that rainwater flows into the room. Can be prevented.

  In the present embodiment, the convex portion 12 is formed on the vertical frame 10 and the shutter unit 40 is forced to be mounted in a state of being biased toward the second wall portion 11d. However, the shutter plate 47 is the shutter unit. Since it protrudes from the opening part 46 of 40 and contacts the 1st wall part 11c, the internal space 15 can be interrupted | blocked.

  In this embodiment, by using the torsion coil spring 49, the wind pressure when the shutter plate 47 is shut off can be set as appropriate. For example, the shutter plate 47 can be shut off when the wind pressure reaches a set pressure of 150 Pa to 200 Pa.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the frame member is configured by a single hollow mold material, but may be configured by a plurality of mold materials to obtain a hollow cross-sectional shape similar to that of the above-described embodiment.
The frame member provided with the ventilation structure may be a horizontal frame extending in the left-right direction.
In the above embodiment, the ventilation member is provided in the frame member of the window frame 4 of the fitting sash window 3, but it may be provided in the frame member of the window frame of the sash window provided so as to be slidable. A ventilation structure may be provided on the frame member.

When the shutter plate is provided in the vertical frame, the posture maintaining means for maintaining the posture along the vertical frame of the shutter plate may be only gravity acting on the shutter plate.
The rotation axis of the shutter plate may extend left and right.
The ventilation control device may be installed so as to fit in the indoor ventilation opening.
The ventilation control device may be omitted, and natural ventilation may be performed with the internal space of the main part of the frame member as a ventilation path.

  The present invention can be applied to a ventilator for ventilating indoors.

2 Opening frame (frame for windows)
4 Window frame (frame for windows)
10 Vertical frame (frame member)
DESCRIPTION OF SYMBOLS 11 Main part 11a Outdoor side wall part 11b Indoor side wall part 11c 1st wall part 11d 2nd wall part 15 Internal space 16 Housing space 17 Outdoor side ventilation port 18 Indoor side ventilation port 19 Mounting port 20 Cover member 27 Operation port 28 Auxiliary ventilation port 30 Ventilation control device 32 Operation knob 40 Shutter unit 41 Unit main body 43a Stopper 45a, 45b Hook 47 Shutter plate 47x First part 47y Second part 49 Torsion coil spring (spring)

Preferably, the shutter plate is formed such that a first portion near the outdoor side ventilation opening is longer than a second portion near the indoor side ventilation port as viewed from the rotation axis, and the shutter plate When the air pressure is weak, the posture maintaining means maintains the posture along the longitudinal direction of the frame member to allow the air to flow in the internal space of the main part. When the wind pressure is strong, the posture maintaining means is To counteract the flow of air in the internal space of the main part.
According to the above configuration, since the shutter plate allows air to flow in a posture along the longitudinal direction of the frame member, smooth air flow can be performed, and the pressure receiving area between the first portion and the second portion Due to this difference, the shutter plate can be reliably rotated to block the air flow.

The said frame member is a vertical frame extended in an up-down direction, and the said indoor side ventilation opening is arrange | positioned upwards with respect to the said outdoor side ventilation opening .
According to the above-described configuration, it is possible to prevent rainwater from the outdoor side ventilation port from flowing toward the shutter plate through the wall of the main part due to the action of gravity in a state where the shutter plate blocks air flow. .

The vertical frame 10 is also made of an extruded material made of an aluminum alloy, and has a hollow main portion 11 that extends in the longitudinal direction of the vertical frame 10 and has a rectangular shape with a closed cross section as shown in FIG. The main part 11 has an outdoor side wall part 11a and an indoor side wall part 11b that are parallel to each other, and is parallel to each other and faces in the left-right direction (the direction perpendicular to the longitudinal direction of the vertical frame 10 and the indoor / outdoor direction). It has the wall part 11c and the 2nd wall part 11d. The main portion 11 has an internal space 15 closed by the wall portions 11a, 11b, 11c, and 11d.

As shown in FIG. 5, in the indoor side wall portion 11b of the main portion 11 of the vertical frame 10, an indoor side ventilation opening 18 elongated in the vertical direction is formed in a region where the convex portion 12 is not formed. The indoor side ventilation port 18 is disposed above the outdoor side ventilation port 17, and the ventilation ports 17 and 18 are spaced apart in the vertical direction (longitudinal direction of the vertical frame 10).

The shutter plate 47 is urged counterclockwise in FIGS. 11 and 12 by a torsion coil spring 49 (spring) housed in a hollow shaft portion 48. The coil portion of the torsion coil spring 49 is supported by a support convex portion 48a formed at the center of the shaft portion 48, and one end is locked by a locking portion 48b projecting radially inward from the cylindrical portion of the shaft portion 48, and the other end is engaged with an engaging portion 47e formed in the bearing portion 47a of the shutter 47.

In the mounted state of the shutter unit 40, the shutter unit 40 is separated from the first wall portion 11c of the main portion 11, and the opening 46 faces the first wall portion 11c. The rotation axis of the shutter 47 is arranged to be biased toward the second wall portion 11d .

When the outdoor wind and rain is strong, the strong wind pressure acts on the shutter plate 47 from the outdoor side ventilation port 17, whereby the shutter plate 47 rotates clockwise against the urging force of the torsion coil spring 49 . By this rotation, the second portion 47y of the shutter plate 47 moves away from the stopper 43a toward the second wall portion 11d, and the tip portion of the shutter plate 47 contacts the right plate portion of the main plate 42 through the packing 47c. On the other hand, the first portion 47x of the shutter 47 protrudes from the opening 46 of the shutter unit 40, and the tip of the first portion 47x hits the first wall portion 11c via the packing 47b. As a result, air circulation in the internal space 15 of the main part 11 can be blocked.

Claims (9)

A frame member that forms a part of the window frame and extends linearly, and a ventilation structure provided in the frame member,
The frame member has a main part that extends in the longitudinal direction and is hollow with a closed cross-sectional shape, and the main part has an outdoor side wall part and an indoor side wall part,
The ventilation structure includes an outdoor vent formed in the outdoor side wall, an indoor vent formed in the indoor side wall and spaced apart from the outdoor vent in the longitudinal direction of the frame member, and A shutter plate disposed in the internal space of the main part between the outdoor side ventilation opening and the indoor side ventilation opening, and rotatably supported by the main part;
The shutter plate allows air flow in the internal space of the main portion when the wind pressure is weak, and blocks air flow in the internal space of the main portion by the wind pressure when the wind pressure is strong. Ventilator characterized by. The shutter plate is formed such that the first part near the outdoor side ventilation opening is longer than the second part near the indoor side ventilation opening as viewed from the rotation axis.
When the wind pressure is weak, the shutter plate is maintained in the posture along the longitudinal direction of the frame member by the posture maintaining means, and allows the air to flow in the internal space of the main part, and when the wind pressure is strong, The ventilation apparatus according to claim 2, wherein the ventilation device is rotated against the posture maintaining means by wind pressure to block air flow in the internal space of the main part.   The posture maintaining means includes a spring that urges the shutter plate to rotate and a stopper that restricts the rotation of the shutter plate in the urging direction of the spring. Ventilation device.   The shutter unit further includes a unit main body disposed in the internal space of the main portion, the shutter plate rotatably supported by the unit main body, and the unit main body. The ventilation device according to claim 3, comprising the spring and the stopper. On the indoor side wall portion of the main part, an attachment port is formed between the outdoor side ventilation port and the indoor side ventilation port, and a flange is formed on the indoor side of the unit body,
The shutter unit is disposed in the internal space of the main part with the unit main body inserted into the attachment port and the flange part fixed to the indoor side wall part. The ventilation apparatus according to claim 4. The main part has the outdoor side wall part and the indoor side wall part, and has first and second wall parts opposed to the longitudinal direction of the frame member and the direction orthogonal to the indoor / outdoor direction, and its cross-sectional shape Has a long and narrow rectangle in the opposing direction of the first and second walls,
The indoor side wall portion is formed with a convex portion that is located closer to the first wall portion and protrudes indoors, and the attachment opening is a region where the convex portion is not formed in the indoor side wall portion. Is formed,
The unit main body has a cylindrical shape with a rectangular cross section, is close to the second wall portion, is disposed away from the first wall portion, and has an opening facing the first wall portion,
The ventilation device according to claim 5, wherein when the shutter plate rotates in the closing direction, the first portion protrudes from the opening and hits the first wall.   The ventilator according to any one of claims 1 to 6, wherein the frame member is a vertical frame extending in the up-down direction, and an outdoor-side ventilation port is disposed above the outdoor-side ventilation port. .   8. The ventilation adjusting device for adjusting the flow of air through the indoor side ventilation opening is provided on the indoor side wall of the main part. Ventilation device. The frame member has a housing space that extends in the longitudinal direction of the frame member and is disposed indoors from the main portion and is opened indoors, and the ventilation control device is disposed in the housing space. ,
The housing space is covered with a cover member extending in the longitudinal direction of the frame member, and an operating port is formed in the cover member at a position corresponding to the operation knob of the ventilation control device, and the indoor side ventilation port The ventilator according to claim 8, wherein an auxiliary ventilation port is formed at a location corresponding to.

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