JP6352139B2 - Ventilation equipment - Google Patents

Description

  The present invention relates to a ventilation device that is attached to a wall surface and takes in air.

  Generally, in high-rise buildings, the higher the floor, the stronger the wind, and the windows cannot be opened or closed from the viewpoint of safety against falling. For this reason, the proposal of the ventilator which can ventilate between outdoor space and indoor space, without opening and closing a window is desired.

  The ventilator described in Patent Literature 1 includes a housing that forms a passage through which air passes from the outdoor space toward the indoor space, and a rotating blade that is rotatably supported in the passage. As the rotary blades rotate, the opening degree of the passage in the housing is changed, and the flow rate of the air passing through the passage can be adjusted. This rotating blade makes it easy to take in outside air at a large opening when the wind is weak, and makes it difficult to take in outside air at a small opening when the wind is strong. Further, the ventilation device includes a lid member for closing the opening on the indoor side when not used in weather such as rain.

JP 2014-137162 A

  By the way, it is requested | required from the viewpoint of material cost and the installation space to a building to suppress the dimension of a ventilator. Since the technique described in Patent Document 1 is provided with a lid member for closing the opening of the ventilator, it is necessary to secure the space for that. Moreover, the structure which can block | close the opening of a ventilation apparatus firmly is desirable.

  This invention is made | formed in view of such a condition, The place made into the objective is providing the ventilation apparatus which can fully ensure the sealing performance to opening, reducing in size.

  In order to solve the above-described problem, a ventilator according to an aspect of the present invention includes a ventilation portion having an outdoor opening and an indoor opening, and a blade portion provided in an air flow path from the outdoor opening to the indoor opening. A lifting mechanism fixed to the indoor side so as to be rotatable and moving the blade portion. The lifting mechanism lifts the blade portion at the initial position in the direction of closing the indoor opening, and can close the indoor opening with the blade portion at the closed position.

  According to this aspect, by closing the indoor side opening with the blade portion, another lid member and its hinge portion become unnecessary, and the ventilation device can be downsized. Also, by lifting the blade part by the lifting mechanism located on the indoor side, the lifting mechanism is connected to the upper surface of the blade part, the lower surface of the blade part is made uniform, and the indoor side opening is made with the uniform surface of the blade part. Can be closed. And a sealing performance can be improved by making a blade | wing part contact | abut to the opening edge of indoor side opening.

  A contact surface that is in surface contact with the opening edge may be formed on at least one side of the end portion of the blade portion. Sealing performance can be enhanced by surface contact.

  The contact surface may be provided on the same plane. The contact surfaces provided on the same plane can be easily brought into contact with the opening edge, and the sealing performance can be further improved.

  The lifting mechanism may include a first link shaft portion that rotatably connects the blade portion and the lifting mechanism. The first link shaft portion may be coupled to the central portion of the blade portion as viewed from the axial direction. As a result, the blocking load applied to the opening edge of the indoor opening at the closed position can be balanced and can be closed stably.

  ADVANTAGE OF THE INVENTION According to this invention, the ventilation apparatus which can fully ensure the sealing performance to opening can be provided, reducing in size.

It is a front view which shows the structure of the curtain wall to which the ventilator which concerns on embodiment is attached. It is side surface sectional drawing which shows the structure of the ventilation apparatus which concerns on embodiment. It is a plane sectional view of a ventilation device. It is a figure explaining the structure of a blade | wing part and a rotation stop structure. It is sectional drawing of line segment BB of the ventilation apparatus shown in FIG. It is a figure for demonstrating the link mechanism of a ventilator. It is a figure for demonstrating the link mechanism in a closed position. It is a figure for demonstrating the ventilation apparatus of a modification.

  FIG. 1 is a front view illustrating a configuration of a curtain wall 71 to which a ventilation device 10 according to the embodiment is attached. FIG. 2 is a side cross-sectional view showing the configuration of the ventilator 10 according to the embodiment, and FIG. 3 is a plan cross-sectional view of the ventilator 10. 2 is a cross-sectional view taken along line AA of the ventilation device 10 shown in FIG.

  As shown in FIG. 2, the ventilation device 10 ventilates between an outdoor space 12 and an indoor space 14 partitioned by a building wall. In the embodiment, the ventilator 10 is attached to an invisible portion or a saddle plate portion of the curtain wall.

  Returning to FIG. 1, the curtain wall 71 is fixed between the vertical walls with a predetermined interval in the horizontal direction by a vertical support bracket fixed to the end of the building frame. It is a curtain wall structure in which an opening frame is formed by spanning at a predetermined interval in the vertical direction, and a panel such as glass is fitted and installed in each opening frame. The curtain wall 71 includes a frame body 72 configured by a plurality of frame members framed in a rectangular shape, and a glass plate 73 fitted inside the frame body 72. The curtain wall 71 includes a pair of ventilator horizontal frames 72a provided at intervals in the vertical direction at the attachment position of the ventilator 10. The ventilator 10 is attached to the pair of ventilator horizontal frames 72a.

  In addition, although the curtain wall 71 assembled by the knockdown system was shown as an example of the curtain wall and the ventilator 10 was attached to the knockdown curtain wall 71 as an example, the present invention is not limited to this. For example, the ventilation device 10 may be attached to a unit type curtain wall. Moreover, it is not restricted to a curtain wall, You may attach the ventilator 10 to the unspotted part of a sash.

  As shown in FIG. 2, the ventilation portion 20 of the ventilator 10 functions as a housing that forms the air flow path 24 and forms the outer shape of the ventilator 10. As shown in FIGS. 2 and 3, for example, the ventilation portion 20 is provided on the side portions of the upper and lower frames 20b and 20a that are spaced apart from each other in the vertical direction on both sides in the left and right direction of the upper and lower frames 20b and 20a. And a connected side frame 20c. The ventilation part 20 is formed in a box shape by these upper frame 20b, lower frame 20a and side frame 20c. The ventilation unit 20 is fixed and attached to the indoor side surface of the pair of ventilator horizontal frames 72a by a fixing tool such as a screw.

  As shown in FIG. 2, the ventilation unit 20 includes an outdoor opening 16 provided in the outdoor space 12, an indoor opening 18 provided in the indoor space 14, and the outdoor opening 16. And a flow path 24 reaching the inner opening 18. The outdoor side opening 16, the indoor side opening 18, and the flow path 24 are formed by an upper frame 20b, a lower frame 20a, and a side frame 20c. In FIG. 2, the outdoor opening 16 is provided so as to open in the horizontal direction, and the indoor opening 18 is provided so as to open upward in the vertical direction. You may open it. The indoor side opening 18 is formed so as to be inclined with respect to the horizontal direction, and has an opening area larger than that formed along the horizontal direction. As shown in FIG. 2, the outdoor opening 16 is provided with a screen door 17 that prevents inflow of foreign matter.

  The outdoor opening 16 is located in the gap between the ventilator horizontal frame 72a of FIG. 1 and is formed in a long rectangular shape, and the indoor opening 18 is similarly formed in a long rectangular shape. As shown in FIG. 3, the ventilator 10 is also provided in a longitudinal shape.

  As shown in FIG. 2, a resin sealing material 22 is provided at the opening edge of the indoor opening 18 on the flow path 24 side. The sealing material 22 is formed on the entire circumference of the opening edge of the indoor opening 18, and is located on both sides of the first edge seal 22a located on one side of the longitudinal shape, the second edge seal 22b located on the other side of the longitudinal shape. A side edge seal 22c is provided.

  The blade part 26 is rotatably supported with respect to the ventilation part 20 in the flow path 24 from the outdoor side opening 16 to the indoor side opening 18. As shown in FIG. 2, the blade portion 26 is provided substantially horizontally so that the shaft portion intersects the direction in which air flows from the outdoor side opening 16 to the indoor side opening 18 of the ventilation portion 20. As shown in FIG. 3, the shaft portion of the blade portion 26 has a pair of first link shaft portions 44 provided above the blade portion 26 and a pair of blade shaft portions 28 provided on both sides of the blade portion 26. And supported by two types of shafts. The blade part 26 is provided so as to be able to change the opening degree of the flow path 24 in the ventilation part 20 by rotating, and thereby the flow rate of air passing through the flow path 24 can be adjusted.

  The blade portion 26 is stationary at a normal rotation position that opens the flow path 24 when the wind speed of the air passing through the flow path 24 is slow, and closes the flow path 24 when the wind speed of the air passing through the flow path 24 is high. Rotates to the closed rotation position and stops still. In FIG. 2, the blade portion 26 in the normal rotation position is indicated by a solid line, and the blade portion 26 in the closed rotation position is indicated by a dotted line.

  As shown in FIG. 3, the blade shaft portion 28 that rotatably supports the blade portion 26 is provided so as to protrude outward from the side plates 27 at both ends of the blade portion 26 in the left-right direction, and the side portion of the ventilation portion 20. It is supported by the blade shaft guide portion 30 of the frame 20c. A gap between the blade part 26 and the side frame 20c forms a side channel 24c, and the side channel 24c is open even when the blade part 26 is in the closed rotation position, so that a certain amount of ventilation can be secured. .

  As shown in FIGS. 2 and 3, the inner surface of the side frame 20 c of the ventilation unit 20 has a first restriction part 34 a and a second restriction part 34 b that restrict the rotation of the blade part 26. Part 34 "). At the normal rotation position, the second cushion 32b of the blade portion 26 comes into contact with the second restriction portion 34b and stops rotating, and at the closed rotation position, the first cushion 32a comes into contact with the first restriction portion 34a and stops rotating. When the first cushion 32a and the second cushion 32b are not distinguished, they are referred to as “cushion 32”. Here, with reference to FIG. 4, the blade | wing shaft part 28, the blade | wing shaft guide part 30, the cushion 32, and the restriction | limiting part 34 are demonstrated in detail.

  FIG. 4 is a diagram illustrating the structure of the blade portion 26 and the rotation stopper structure. FIG. 4A is a side view of the blade portion 26 as viewed from the lateral outer side, and FIG. 4B is a top view mainly of the side plate 27 and the side frame 20c.

  As shown in FIG. 4A, the side plate 27 is fixed to the end portion of the blade portion 26 by a fixing tool 29 such as a screw. As shown in FIG. 4B, the blade shaft portion 28 and the cushion 32 are provided outside the side plate 27, and are provided so as to project toward the side frame 20 c facing the side plate 27. The sliding bearing 28a of the blade shaft portion 28 and the resin cushion 32 are supported on the side plate 27 by screws.

  The blade shaft guide part 30 and the restriction part 34 are formed on the inner surface of the side frame 20 c and are provided so as to protrude toward the opposing side plate 27. The blade shaft guide portion 30 is provided such that a pair of wall portions 30a are provided in parallel, and the tip portions 30b of the pair of wall portions 30a are close to each other and the facing interval is narrowed. The blade shaft portion 28 is prevented from coming off in the axial direction by the narrowed tip portion 30b. Further, the movement of the blade shaft portion 28 in the horizontal direction is restricted by being sandwiched between the pair of wall portions 30a. By providing the blade shaft portion 28 in the blade portion 26 and forming the blade shaft guide portion 30 serving as a bearing on the inner surface of the side frame 20c, it is not necessary to provide an extra hole in the blade portion 26 or the ventilation portion 20.

  The restricting portion 34 is formed by bending a flat plate, is formed in an L-shaped cross section, and is provided such that a wall surface stands from the side frame 20c. The cushion 32 comes into contact with the wall surface where the restricting portion 34 is erected and the rotation of the blade portion 26 is stopped. The impact and sound when the resin cushion 32 comes into contact with the restricting portion 34 is reduced.

  The blade portion 26 includes a front end portion 26a on the outdoor side, a rear end portion 26b on the indoor side, a throttle portion 26c formed in the middle of the lower surface, a flat plate portion 26d on the front side of the throttle portion 26c, and an inclined portion 26e inclined from the flat plate portion 26d. The first contact surface 26f is formed on the upper surface on the front end portion 26a side, and the second contact surface 26g is formed on the upper surface on the rear end portion 26b side. Although the blade | wing part 26 is shape | molded by performing the extrusion molding etc. which used metal materials, such as aluminum, as a raw material, and each part is provided integrally, you may be comprised combining a separate member. Hereinafter, the direction in which the flat plate portion 26 d extends from the center of gravity G with respect to the blade portion 26 will be described as the front side of the blade portion 26, and the opposite direction will be described as the rear side of the blade portion 26.

  The flat plate portion 26d of the blade portion 26 is provided to extend along the direction (for example, the horizontal direction) of the air flowing in the flow path 24 with respect to the blade shaft portion 28 when the blade portion 26 is in the normal rotation position. ing. The flat plate portion 26d extends so as not to block the air flow in the flow path 24 from the outdoor opening 16 side to the indoor opening 18 side when the blade portion 26 is in the normal rotation position. In the flat plate portion 26d, the outdoor opening 16 is opened in the horizontal direction, and air flows substantially horizontally in the flow path 24 at the position where the flat plate portion 26d is provided. Are provided so as to extend substantially horizontally.

  The inclined portion 26e is provided so as to be inclined obliquely upward from the flat plate portion 26d at the normal rotation position, and receives wind flowing in the horizontal direction. The horizontal length of the flat plate portion 26d when viewed from the axial direction of the blade portion 26 is longer than that of the inclined portion 26e. Thereby, when the blade | wing part 26 rotates, the area of the perpendicular | vertical direction of the blade | wing part 26 can be enlarged with respect to the rotation angle of the blade | wing part 26. FIG. That is, the flat plate portion 26d becomes easier to rotate from the normal rotation position by the force due to the pressure difference as the length extending in the horizontal direction becomes longer when the blade portion 26 is in the normal rotation position. Easy to change.

  The first contact surface 26f is formed in a flat band shape on the upper surface on the front end side of the blade portion 26, and the second contact surface 26g is formed in a flat band shape on the upper surface on the rear end side of the blade portion 26. . The first contact surface 26f and the second contact surface 26g are formed on the same plane, and the upper end surface 27a of the side plate 27 is also formed on the same plane. The first contact surface 26f, the second contact surface 26g, and the upper end surface 27a contact the sealing material 22 at the opening edge of the indoor side opening 18, thereby closing the indoor side opening 18.

  The center of gravity G of the blade portion 26 is located below the blade shaft portion 28, and is located directly below the blade shaft portion 28 when the flat plate portion 26d is in a horizontal normal rotation position. When the blade portion 26 rotates, the center of gravity G rotates and torque due to its own weight is generated in the blade portion 26. When an external force is not applied to the blade portion 26 due to the torque due to its own weight, the flat plate portion 26d of the blade portion 26 is maintained at a normal rotation position extending in a substantially horizontal direction. The center of gravity G and the blade shaft portion 28 of the blade portion 26 are provided in a central portion 26h located between the front end portion 26a and the rear end portion 26b. By providing the rotation fulcrum of the blade part 26 in the center part 26h, it becomes easy to rotate like a seesaw. The central portion 26h only needs to be in the range of the central portion when the blade portion 26 is divided into three in the front-rear direction, and is not limited to the center in the front-rear direction.

  The blade portion 26 is provided with a throttle portion 26c so that the air flowing in the flow path 24 can be rotated from the normal rotation position without receiving the air by the flat plate portion 26d. The throttle part 26c is provided so as to protrude downward from the blade part 26 at an intermediate position of the blade part 26, and is provided so that the lower surface of the blade part 26 protrudes in an arc shape.

  Returning to FIG. 2, the function of the throttle part 26 c of the blade part 26 will be described. When the blade part 26 is in the normal rotation position, the flow path 24 of the ventilation part 20 is partitioned by the blade part 26, so that the upper flow path 24a and the lower flow path are interposed between the blade part 26 and the ventilation part 20. A flow path different from 24b is formed. In the embodiment, the lower flow path 24 b is formed by the lower surface of the blade part 26 and the upper frame 20 b of the ventilation part 20. The upper flow path 24 a is formed by the upper surface of the blade part 26 and the lower frame 20 a of the ventilation part 20.

  The throttle part 26 c is provided in the lower flow path 24 b below the blade part 26. In the embodiment, the throttle part 26 c is provided in the blade part 26, but may be provided in the lower frame 20 a that is the inner surface of the flow path 24 of the ventilation part 20. In this case, the lower frame 20a of the ventilation portion 20 is located at an intermediate position from the outdoor opening 16 side to the indoor opening 18 side of the lower flow path 24b when the blade portion 26 is in the normal rotation position. Is provided so as to protrude toward the blade portion 26.

  The restrictor 26c functions as a resistance of air passing through the lower flow path 24b, and the flow rate of air passing through the lower flow path 24b is slower than the flow speed of air passing through the upper flow path 24a. As a result, when air passes into the flow path 24 from the outdoor opening 16 of the ventilation portion 20, the pressure of the upper flow path 24a becomes smaller than the pressure of the lower flow path 24b, and the upper flow path 24a and the lower flow path 24b. A pressure difference occurs between And the force which goes to the closed rotation position acts on the flat plate part 26d of the blade | wing part 26 by a pressure difference, and the flat plate part 26d begins to rotate from a normal rotation position.

  Thus, the throttle part 26c is provided as a pressure difference generating means for rotating the flat plate part 26d from the normal rotation position by generating a pressure difference between the lower flow path 24b and the upper flow path 24a. The lower flow path 24b is provided with a throttle portion 26c in the middle thereof so that the blade portion 26 can be rotated from the normal rotation position due to a pressure difference acting on the flat plate portion 26d of the blade portion 26. Is adjusted. The cross-sectional shape is adjusted so that the cross-sectional area at the position of the throttle portion 26c is smaller than the cross-sectional area of the lower flow path 24b on the outdoor opening 16 side. As the ratio of the cross-sectional area increases, the pressure difference acting on the flat plate portion 26d increases, and the blade portion 26 is easily rotated from the normal rotation position.

  As shown in FIG. 3, the blade portion 26 is held by the plurality of link mechanisms 42 so as to be suspended from the rotation shaft portion 36. The rotation shaft portion 36 is rotatably supported by a support portion 40 fixed to the edge of the indoor opening 18. The rotating shaft portion 36 extends in the longitudinal direction of the blade portion 26 and is connected to a driving portion 38 that electrically rotates the rotating shaft portion 36. The drive unit 38 is driven by turning on / off the switch as a trigger, and rotates the rotation shaft unit 36 in a predetermined direction. The rotation shaft portion 36 may be provided so as to be manually rotatable.

  As shown in FIG. 3, the blade shaft portion 28, which is two types of rotation shafts provided in the blade portion 26, and the first link shaft portion 44 of the link mechanism 42 are provided coaxially. Thereby, it is possible to prevent the rotation at the blade shaft portion 28 and the rotation at the first link shaft portion 44 from interfering with each other.

  FIG. 5 is a cross-sectional view taken along line BB of the ventilator 10 shown in FIG. FIG. 5A shows a state where the blade portion 26 is in the adjustment position, and FIG. 5B shows a state where the blade portion 26 is in the closed position. In addition, the ventilation apparatus 10 shown in FIG.

  As shown in FIG. 5B, in the ventilator 10 of the embodiment, the blade portion 26 for adjusting the air flow rate is lifted and is in the closed position where the indoor opening 18 is closed. As described above, the blade portion 26 is provided so as to be movable up and down, and has an adjustment position for adjusting the ventilation rate shown in FIG. 5A and a closed position for closing the indoor side opening 18 shown in FIG. 5B. Take two positions. The adjustment position may be regarded as an initial position where the ventilator 10 functions as a ventilation path.

  The blade part 26 is moved up and down by the link mechanism 42. As shown in FIG. 3, a plurality of link mechanisms 42 are provided on the blade portion 26. The link mechanism 42 supports the blade portion 26 so as to be rotatable in a suspended manner. Here, the link mechanism 42 will be described in detail with reference to FIG.

  FIG. 6 is a view for explaining the link mechanism 42 of the ventilation device 10. 6A is a side view of the link mechanism 42, FIG. 6B is a front view of the link mechanism 42, and FIG. 6C is a top view of the link mechanism 42.

  The link mechanism 42 includes a first fixing portion 54 fixed to the upper surface of the blade portion 26, a second fixing portion 46 fixed to the outer peripheral surface of the rotating shaft portion 36, and the blade portion 26 by the first link shaft portion 44. A first link portion 48 that is pivotably connected to the first link portion 48, a second link portion 50 that is coupled to the first link portion 48 and the pivot shaft portion 36, and a first link portion 48 that is pivotally coupled to the blade portion 26. And a second link shaft portion 52 that rotatably connects the second link portion 50 and the first link portion 48. The second link part 50 is formed integrally with the second fixing part 46.

  As shown in FIG. 6A, the first link shaft portion 44 and the second link shaft portion 52 are provided in parallel to the rotation axis of the rotation shaft portion 36. The plate-like first link portion 48 is formed in a curved substantially arc shape, and is formed so that the rotation shaft portion 36 can enter on the inner diameter side. The plate-like second link shaft portion 52 is formed in a longitudinal shape.

  The first link portion 48 is formed longer than the second link portion 50, and the interval between the second link shaft portion 52 and the first link shaft portion 44 is longer than the interval between the second link shaft portion 52 and the rotation shaft portion 36. It is formed. By forming the second link portion 50 short, the rotation locus of the second link shaft portion 52 can be reduced.

  Returning to FIG. By closing the indoor side opening 18 with the wing | blade part 26, another cover member and its hinge part become unnecessary, and the ventilation apparatus 10 can be reduced in size. In addition, since it is not necessary to provide another lid member in the indoor opening 18, there is no resistance to ventilation by the lid member, and air permeability can be improved.

  By closing the indoor opening 18 from the ventilation section 20 side by moving the blade section 26 up and down by the link mechanism 42, it is possible to tightly close it. For example, when a rotation mechanism is provided at the front end portion 26a of the blade portion 26 and is rotated by the rotation mechanism to close the indoor opening 18, the closing load of the rear end portion 26b becomes smaller than that of the front end portion 26a, and the sealing performance is lowered. There is a fear. On the other hand, by lifting the blade part 26 and closing the indoor side opening 18, the blocking load applied to the opening edge of the indoor side opening 18 can be balanced and can be stably closed. Moreover, it is not necessary to provide a hole in the lower surface of the blade part 26 by lifting it with the link mechanism 42 located on the indoor side, so that it can be closed with a uniform lower surface and the sealing performance can be improved. Moreover, it can close so that an opening edge may be covered with the upper surface of the blade | wing part 26. FIG.

  The wing | blade part 26 is provided so that it may contact | abut to the opening edge of the indoor side opening 18 in a closed position. The sealing performance can be enhanced by lifting the blade portion 26 from the ventilation portion 20 side and bringing it into contact with the opening edge of the indoor side opening 18. By providing the sealing material 22 at the opening edge of the indoor side opening 18, the sealing performance can be further enhanced. The sealing material 22 may be provided on the blade portion 26.

  A contact surface that is in surface contact with the opening edge is formed on at least one side of the end portion of the blade portion 26. The first contact surface 26f is formed flat on the front end portion 26a of the blade portion 26, and the second contact surface 26g is formed flat on the rear end portion 26b. Further, a flat contact surface is also formed on the upper end surface 27 a of the side plate 27. In the closed position, the first contact surface 26f is in surface contact with the first edge seal 22a, the second contact surface 26g is in surface contact with the second edge seal 22b, and the upper end surface 27a of the side plate 27 is in contact with the side edge seal. 22c is in surface contact. Thereby, even if the blade | wing part 26 shifts a little with respect to the opening edge of the indoor side opening 18, a contact can be ensured and the sealing performance of the blade | wing part 26 can be improved. In addition, it is not necessary to make the blade | wing part 26 surface contact over the perimeter of the opening edge of the indoor side opening 18, and you may make it line-contact partially. For example, the side plate 27 may be formed in a thin plate, the upper end of the side plate 27 may be sharp, and the upper end of the side plate 27 may be in line contact with the side edge seal 22 c of the sealing material 22.

  As shown in FIG. 4, the first contact surface 26f, the second contact surface 26g, and the upper end surface 27a are formed on the same plane. Moreover, the opening edge of the indoor opening 18 is also formed on the same plane over the entire circumference. Thereby, the contact surface of the blade | wing part 26 can be made to surface-contact uniformly to the perimeter of the opening edge of the indoor side opening 18, and a sealing performance can be improved further. By providing the blade shaft portion 28 and the cushion 32 on the outer side of the blade portion 26, the contact surface of the blade portion 26 can be formed on the same plane.

  Returning to FIG. The blade shaft guide portion 30 guides the movement of the blade shaft portion 28 from the adjustment position to the closing position. The guide of the blade shaft guide portion 30 restricts the horizontal movement of the blade shaft portion 28 when moving up and down. Accordingly, when the blade portion 26 is lifted by the link mechanism 42, rattling of the blade portion 26 is suppressed, and the opening edge of the indoor opening 18 and the first contact surface 26f and the second contact surface 26g of the blade portion 26 are horizontal. It is possible to suppress displacement in the direction.

  The blade shaft guide portion 30 restricts the movement of the blade shaft portion 28 in the horizontal direction at the adjustment position. As a result, it is possible to suppress backlash in the horizontal direction of the blade portion 26 that rotates at the adjustment position. Further, it is not necessary to limit the movement in the horizontal direction by the link mechanism 42, and the configuration of the link mechanism 42 can be simplified.

  The first restricting portion 34a and the second restricting portion 34b function as a rotation stop at the adjustment position, and also function as a guide that suppresses the rotation of the blade portion 26 during lifting. When lifting the blade part 26, the first cushion 32 a and the second cushion 32 b are in contact with the first restriction part 34 a and the second restriction part 34 b and are guided toward the indoor opening 18. The blade portion 26 can be lifted while suppressing the rotation of the rotatable blade portion 26. The first restricting part 34 a and the second restricting part 34 b serve as a guide for adjusting the angle of the blade part 26 with respect to the indoor side opening 18 to the inclination of the indoor side opening 18 when the blade part 26 is moved to the indoor side opening 18. By restricting the movement of the front end side and the rear end side of the blade portion 26 by the restricting portion 34, the inclination angle of the blade portion 26 can be determined, and the deviation from the inclined indoor opening 18 can be suppressed.

  FIG. 7 is a view for explaining the operation of the link mechanism 42 in the closed position. In FIG. 7, the reference plane S1 connecting the central axis of the first link shaft portion 44 and the central axis of the rotation shaft portion 36, the central axis of the first link shaft portion 44, and the central axis of the second link shaft portion 52 are shown. The connecting plane S2 and the vertical plane S3 parallel to the vertical direction passing through the central axis of the rotation shaft portion 36 are indicated by sectional lines, and these planes extend along the axial direction.

  The first link portion 48 is formed as a curved shape straddling the rotation shaft portion 36 at the closed position. Thereby, since the load of the blade | wing part 26 is added to the rotating shaft part 36 from the 1st link part 48 straddling the rotating shaft part 36, rotation of the link mechanism 42 can be suppressed.

  The first link shaft portion 44 and the second link shaft portion 52 in the closed position are stable at a position sandwiching the central axis of the rotation shaft portion 36. That is, in the closed position, the first link shaft portion 44 is located on the front side with respect to the vertical plane S3, and the second link shaft portion 52 is located on the rear side with respect to the vertical plane S3. Thereby, the load in each of the 1st link shaft part 44 and the 2nd link shaft part 52 is provided to the rotation shaft part 36, and rotation of the link mechanism 42 by the load of the blade | wing part 26 can be suppressed.

  The second link shaft portion 52 passes through the reference plane S1 when the adjustment position is changed to the closed position with respect to the reference plane S1, and as shown in FIG. Located in the middle right). That is, in the horizontal direction, the second link shaft portion 52 that is located on the front side of the reference plane S1 at the adjustment position is located on the rear side of the reference plane S1 at the closed position. Thereby, rotation of the link mechanism 42 by the load of the blade | wing part 26 can be suppressed.

  Thus, in the closed position, the rotation is suppressed by the link mechanism 42 itself, the closing of the indoor side opening 18 by the blade portion 26 is stable, and the inflow into the room even when rain blows from the outdoor side opening 16. Can be surely prevented. Further, by suppressing the rotation due to the load of the blade portion 26 by the link mechanism 42 itself, it is not necessary to provide another rotation lock mechanism. For example, although it is possible to lock the rotation of the rotation shaft portion 36 by the drive unit 38, the load applied to the drive unit 38 can be reduced by suppressing the rotation due to the load of the blade portion 26 by itself.

  FIG. 8 is a diagram for explaining a modified ventilation device 100. The ventilator 100 of the modification is the same in that the shape of the link mechanism 142 is different from that of the ventilator 10 shown in FIGS. 5A and 5B, and the lifting blade part 26 is provided.

  The link mechanism 42 includes a first link portion 148, a second link portion 150 connected to the rotation shaft portion 36, a first link shaft portion 44 that rotatably connects the blade portion 26 and the first link portion 148. , And a second link shaft portion 152 that rotatably connects the first link portion 148 and the second link portion 150.

  The first link part 148 and the second link part 150 are formed by a long flat plate. For example, by making the shapes of the first link portion 148 and the second link portion 150 common, the manufacturing cost can be suppressed.

  As mentioned above, although this invention was demonstrated based on embodiment, embodiment shows only the principle and application of this invention. In the embodiment, many modifications and arrangements can be made without departing from the spirit of the present invention defined in the claims.

  In the above-mentioned embodiment, although the example which applied the ventilation apparatus 10 which concerns on this invention to the building was shown, you may be applied to civil engineering structures, such as a tunnel.

  In the embodiment, an example is shown in which the pressure difference generating means such as the throttle portion 26c is provided in the lower flow path 24b. However, the pressure difference generating means may be provided in the upper flow path 24a. . In this case, when rotating the blade part 26 from the closed rotation position toward the normal rotation position, a biasing force toward the normal rotation position may be applied to the blade part 26 by a known biasing means such as a weight.

  Further, in the embodiment, when the blade portion 26 is in the normal rotation position, the flat plate portion 26d of the blade portion 26 is provided to extend substantially horizontally in the flow path 24 extending substantially horizontally. explained. In the modification, the flat plate part 26d of the blade part 26 may be provided so as to extend substantially vertically in the flow path 24 extending substantially vertically so that air flows substantially vertically. In this modified example, since air flows substantially vertically in the flow path 24 at the position where the flat plate portion 26d of the blade portion 26 is provided, the flat plate portion 26d also extends substantially vertically along the air flow. Provided.

  Moreover, although the aspect which raises / lowers the blade | wing part 26 by the link mechanism 42 was shown in embodiment, it is not restricted to this aspect. For example, the blade portion 26 may be lifted by connecting a wire to the rotation shaft portion 36 and the first link shaft portion 44 and winding the wire at the rotation shaft portion 36. Both the link mechanism 42 and the wire function as a lifting mechanism that lifts the blade portion 26.

  Moreover, in embodiment, although the aspect which rotates the blade | wing part 26 and adjusted the ventilation rate was shown, it is not restricted to this aspect. For example, the air flow rate may be adjusted by changing the opening of the flow path by moving the blade part up and down or horizontally. In this case, it is formed so that the cross-sectional area of the flow path changes in the vertical direction or in the horizontal direction. For example, in the ventilation section formed so that the cross-sectional area of the flow path is narrowed upward, when the blade part is moved upward by the lifting mechanism, the opening degree of the flow path is reduced and the ventilation amount is reduced. When moving downward, the opening of the flow path increases and the ventilation rate increases. As described above, the means for adjusting the air flow rate of the flow path 24 is not limited to the rotating vane portion 26 and can be realized by moving vane portions such as vertical movement and horizontal movement. Is called an adjustable blade.

  DESCRIPTION OF SYMBOLS 10 Ventilator, 12 Outdoor space, 14 Indoor space, 16 Outdoor opening, 17 Screen door, 18 Indoor side opening, 20 Ventilation part, 20a Lower frame, 20b Upper frame, 20c Side part frame, 20d Lower standing part, 22 Sealing material , 24 flow path, 26 blade portion, 26a front end portion, 26b rear end portion, 26c throttle portion, 26d flat plate portion, 26e inclined portion, 26f first contact surface, 26g second contact surface, 27 side plate, 28 blade shaft Part, 30 blade shaft guide part, 32a first cushion, 32b second cushion, 34a first restriction part, 34b second restriction part, 36 rotation shaft part, 38 drive part, 40 support part, 40a support hole, 42 link Mechanism, 44 1st link shaft part, 46 2nd fixing | fixed part, 48 1st link part, 5 The second link portion, 52 second link shaft portion, 54 first fixing portion, 71 curtain walls, 72 frame, horizontal frame for 72a ventilator, 73 glass plates.

Claims (4)

A ventilation section having an outdoor opening and an indoor opening;
A blade portion provided in an air flow path from the outdoor opening to the indoor opening;
A pivot shaft fixed to be pivotable on the indoor side from the indoor opening;
A lifting mechanism connected to the rotating shaft portion and moving the blade portion,
The ventilator is characterized in that the lifting mechanism lifts the blade portion at an initial position in a direction to close the indoor side opening, and can close the indoor side opening by the blade portion at a closed position. At least one side of the end portion of the blade portion is formed with a contact surface in surface contact with the edge of the indoor opening ,
When the blade portion is lifted, it further includes a limiting portion that contacts the end portion of the blade portion to limit the movement of the blade portion and brings the contact surface into surface contact with the edge of the indoor opening. The ventilator according to claim 1.   The ventilation device according to claim 2, wherein the contact surface is provided on the same plane. The lifting mechanism has a first link shaft portion that rotatably connects the blade portion and the lifting mechanism,
The ventilation device according to any one of claims 1 to 3, wherein the first link shaft portion is connected to a central portion of the blade portion as viewed in the axial direction.

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