JP6554901B2 - Passage opening and closing device - Google Patents

Description

  The present invention relates to a ventilator attached to a passage (ventilation opening) such as an upper part of a room in a building such as a detached house or an apartment house, or a passage opening / closing device suitable for use in an inward, outward or extended window in a building.

JP 11-336443 A JP 2004-251472 A Japanese Patent Laying-Open No. 2005-232929

  This type of passage opening / closing device is connected to an electric motor or the like via a speed reducer such as a worm wheel mechanism by connecting an opening / closing member provided on the frame body defining the passage so as to open and close the passage. By transmitting the rotational force due to the above to the opening / closing member via the speed reducer, the opening / closing member opens and closes the passage.

  And in patent documents 1 and 2, the passage which adjusts the flow of the gas which flows into the building from the passage according to the flow change such as the flow rate of gas flowing into the building through the passage from outside the building, the flow velocity, etc. A switchgear has been proposed.

  By the way, in these passage opening and closing devices, the opening and closing members arranged so as to close the passage come into contact with the seal members attached to the upper and lower inner edges of the frame defining the passage at the upper and lower edges. Although the passage is closed, such an opening and closing member is rotatably supported by the side plates of the frame at both lateral ends thereof, so that both ends and the side plates of the frame are maintained in order to maintain smooth rotation. However, if there is such a gap, the opening / closing member contacts the seal member to close the passage and prevent air from flowing through the passage. However, there is a possibility that air may be circulated through the gap.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a passage opening and closing device capable of reliably closing a passage by an opening and closing member.

  The passage opening and closing device of the present invention includes a frame body that defines a passage communicating between the inside and outside of a building, an opening and closing member that is rotatably disposed in the passage and opens and closes the passage, and the opening and closing member faces the passage opening position. Rotating means for forcibly rotating in the passage opening direction and the passage closing direction toward the passage closing position, and rotatably supported by the opening / closing member, and the passage from the outside to the inside of the building when the passage is opened by the opening / closing member A closing member that is rotated in a closing direction to close the passage by an airflow flowing through the air passage, and an inner edge of a frame body that defines the passage. And an annular elastic sealing member that contacts an outer edge of the opening / closing member.

  The passage opening and closing device of the present invention includes a frame body that defines a passage that communicates between the inside and outside of a building, an opening and closing member that is rotatably disposed in the passage and that opens and closes the passage, and the opening and closing member is disposed at a passage opening position. A rotating means for forcibly rotating in the opening direction of the passage toward the passage and in the closing direction of the passage toward the passage closing position, and rotatably supported by the opening and closing member, and opening the passage by the opening and closing member from the outside to the building. A closing member that is rotated in a closing direction to close the passage by an airflow flowing through the passage, and an outer edge of the opening / closing member that faces an inner edge of the frame body that defines the passage, and surrounds the passage in closing the passage by the opening / closing member. And an annular elastic seal member that contacts the inner edge of the frame when the passage is closed by the opening / closing member.

  According to the passage opening / closing device of the present invention, the annular elastic seal member is provided so as to surround the passage, and the annular elastic seal member contacts the outer edge of the opening / closing member or the inner edge of the frame body when the passage is closed by the opening / closing member. Therefore, even if the opening / closing member is rotatably supported by the side plate of the frame body at both lateral ends of the opening / closing member with a gap between the both ends and the side plate of the frame body, In the closing of the passage by means of the above, the passage can be completely and reliably closed, while the opening / closing member can be freely rotated at the both lateral ends of the opening / closing member with a gap between the both ends and the side plate of the frame. As a result, the opening / closing member can be smoothly rotated.

  In a preferred example of the passage opening and closing device of the present invention, the annular elastic seal member is made of an endless annular body, and is formed integrally with a pair of elastic seal portions facing each other and the pair of elastic seal portions. And another pair of elastic seal portions facing each other.

  Such an annular elastic sealing member is preferably made of natural or synthetic resin, more preferably natural rubber or synthetic rubber, and may be solid, but is pressed in contact. In a preferred example, it is hollow so that it can be easily elastically deformed to exhibit effective adhesion with the counterpart material.

  In the present invention, preferably, the opening / closing member is rotatably attached to the frame at one edge thereof, and the closing member is rotatably supported on a surface of the opening / closing member facing the outside or the building. In this case, one edge of the opening / closing member may be an upper edge or a lower edge of the opening / closing member, and may further be a side edge.

  In the present invention, the closing member may be configured to be rotated in a direction to close the passage by the air flow when the opening / closing member is disposed at the passage opening position. A weight attached to the vane, and the vane is preferably located at one end and the other end which are free ends, and between the one end and the other end, and an opening / closing member And a weight may be provided at one end or the other end of the blade.

  In a preferred example, the closing member is composed of a thin metal plate blade or a thin hard resin plate blade, and the thin metal plate or thin hard resin plate does not pass through the airflow even if it is non-porous. A plurality of holes may be allowed to some extent, and the closing member may be made of a wire mesh blade.

  In a preferred example, the weight rotates in a direction opposite to the direction of the rotational moment about the connecting portion generated in the closing member based on the weight of the closing member from one end of the closing member to the connecting portion of the closing member. A moment is generated in the closing member. Such a weight may consist of a plurality of detachable weight parts so that the magnitude of the rotational moment in the opposite direction generated in the closing member can be adjusted by selecting the number.

  In a preferred example, the rotating means may include an electric motor as the rotational force generating means, but instead may include an operation arm or a ball chain that can be manually operated as the rotational force generating means. .

  ADVANTAGE OF THE INVENTION According to this invention, the channel | path opening / closing apparatus which can perform the closure of the channel | path by an opening / closing member reliably can be provided.

FIG. 1 is an explanatory cross-sectional view of an example of an embodiment of the present invention. 2 is a cross-sectional explanatory view taken along the line II-II shown in FIG. FIG. 3 is a partial perspective explanatory view of the example shown in FIG. FIG. 4 is an operation explanatory diagram of the example shown in FIG. FIG. 5 is an operation explanatory diagram of the example shown in FIG. FIG. 6 is a cross-sectional explanatory view of another example of the embodiment of the present invention. FIG. 7 is a partial perspective explanatory view of the example shown in FIG. FIG. 8 is a diagram for explaining the operation of the example shown in FIG. FIG. 9 is a cross-sectional explanatory view of still another example of the embodiment of the present invention. FIG. 10 is a diagram for explaining the operation of the example shown in FIG.

  Next, examples of embodiments of the present invention will be described in more detail based on preferred specific examples shown in the drawings. The present invention is not limited to these examples.

  1 to 3, a passage opening / closing device 1 as a ventilation device of this example includes a frame body 5 that defines a passage 4 that communicates the inside and outside 2 and 3 of a building, and a passage opening direction centering on a shaft member 6 in the passage 4. A hollow opening / closing member 7 that is rotatably arranged in the A direction and the B direction that is the passage closing direction, and that opens and closes the passage 4, and the opening / closing member 7 with respect to the frame body 5 with the shaft member 6 as the center. A support mechanism 8 that is rotatably supported in the direction and the B direction, a rotating means 9 that forcibly rotates the opening / closing member 7 in the A direction toward the passage opening position and the B direction toward the passage closing position, and a shaft on the opening / closing member 7 The member 4 is supported so as to be rotatable in the direction D, which is the passage closing direction, and the direction E, which is the passage opening direction, with the member 10 as a center. Airflow 11 flowing through 4), a closing member 12 rotated in the D direction for closing the passage 4, and a support mechanism for supporting the closing member 12 with respect to the opening / closing member 7 so as to be rotatable in the D direction and the E direction around the shaft member 10. 13, a prohibiting mechanism 14 that prohibits rotation of the closing member 12 with respect to the opening / closing member 7 around the shaft member 10 in the E direction above a certain level, and an annular inner edge 15 of the frame 5 that defines the passage 4. An annular elastic sealing member 17 formed of an endless annular body that is provided to surround the passage 4 and contacts the annular outer edge 16 of the opening / closing member 7 that faces the inner edge 15 when the passage 4 is closed by the opening / closing member 7 is provided. doing.

  The frame 5 includes a rectangular outer hollow frame 23 having an opening 22 opened outside the building 3, a rectangular inner hollow frame 25 having an opening 24 opened inside the building 2, an outer hollow frame 23, and A rectangular intermediate hollow frame 27 arranged between the inner hollow frames 25 and having a fitting projection 26 as the inner edge 15, and these outer hollow frame 23, inner hollow frame 25, and intermediate hollow frame 27 is embedded in the building outer wall 28, and the passage 4 is defined by the inner surfaces 29 of the outer hollow frame 23, the inner hollow frame 25, and the intermediate hollow frame 27.

  At least one of the opening 22 and the opening 24 may be provided with a wire mesh such as a dustproof wire mesh and a birdproof wire mesh.

  The opening / closing member 7 having the front plate 32, the rear plate 33, the upper plate 34, the lower plate 35, and the pair of horizontal plates 36 includes the upper plate 34, the lower plate 35, the pair of horizontal plates 36 and the inner surface 29. An annular outer edge 16 of the opening / closing member 7 facing the inner edge 15 is supported by the support mechanism 8 so that a gap 37 is formed between them. 38, a lower edge 39 and a pair of side edges 40.

  The support mechanism 8 has a bearing plate 41 integrally extending from the lower end of the rear edge of each of the pair of horizontal plates 36, and passes through each bearing plate 41 so as to be freely rotatable in the A direction and the B direction. The shaft member 6 is fixed to the lower portion of the side plate 42 of the hollow frame 27, and the opening / closing member 7 is made to be rotatable relative to the frame body 5 in the A direction and the B direction with respect to the shaft member 6 of the bearing plate 41. The shaft member 6 is supported so as to be rotatable in the A direction and the B direction around the shaft member 6. Thus, the opening / closing member 7 holds the bearing plate 41 and the shaft member 6 at one edge of the pair of horizontal plates 36. And is attached to the side plate 42 of the intermediate hollow frame 27 so as to be rotatable in the A direction and the B direction.

  The rotating means 9 includes an electric motor 46 with a reduction gear as a rotational force generating means attached to one horizontal plate 45 of the inner hollow frame 25, and the rotational force from the electric motor 46, and the opening / closing member 7 as A and B And a transmission means 47 for transmitting to the opening / closing member 7 as a rotational force for rotating in the direction.

  The electric motor 46 further rotates the opening / closing member 7 in the A direction at the passage opening position (position shown in FIG. 4) and further B direction of the opening / closing member 7 at the passage closing position (position shown in FIG. 1). The operation of the speed reducer of the electric motor 46 is controlled while the operation of the electric motor 46 is stopped. Unintentional rotation of the opening / closing member 7 due to its own weight and the airflow 11 is prohibited, and a resistance force for maintaining each rotational position of the opening / closing member 7 is generated.

  The transmission means 47 has a rotatable arm 53 fixed at one end 51 to the output rotation shaft 52 of the speed reducer of the electric motor 46, a connecting member 54 attached to the center of the upper portion of the rear plate 33, and a rotation at one end 55. A rotary arm 60 is rotatably connected to the other end 56 of the free arm 53 via a shaft member 57, and the other end 58 is rotatably connected to a connecting member 54 via a shaft member 59. The rotation of the output rotating shaft 52 by the operation of the rotation causes the rotatable arm 53 to rotate about the output rotating shaft 52, and the rotation of the rotatable arm 53 causes the rotatable arm 60 to pivot relative to the rotatable arm 53 and the connecting member 54. The opening and closing member 7 is rotated in the A and B directions by rotating the rotatable arm 60 around the members 57 and 59.

  The closing member 12 includes a blade 65 and a plurality of weights 66 attached to the blade 65. The blade 65 has one end 67 and the other end 68 that are free ends, one end 67, and the like. A connecting portion 69 is provided between the ends 68 and is connected to the opening / closing member 7 through the support mechanism 13 so as to be rotatable in the D direction and the E direction.

  In addition to the connecting portion 69 attached to the shaft member 10, the blade 65 has one end 67 and a front blade portion 71 made of a thin plate between the one end 67 and the connecting portion 69, and the other end 68 and the connecting portion 69 and A rear blade portion 72 made of a thin plate between the other ends 68 is provided, and a weight 66 is provided at the other end 68.

  The support mechanism 13 protrudes from the front plate 32 toward the opening 22 and is attached to a pair of support arms 81 that are respectively attached to the upper portions of the pair of side edges 40, and the distal ends 82 of the pair of support arms 81. A shaft member 10 that is fixed at one end and is rotatably fitted in each end 83 of the connecting portion 69 at the other end in the D direction and the E direction. The opening / closing member 7 is supported on the surface 84 of the front plate 32 facing the outside 3 of the building so as to be rotatable in the D direction and the E direction.

  The weight 66 cooperates with the weight of the closing member 12 from the connecting portion 69 to the other end 68, that is, the weight of the rear blade portion 72, and thus the weight of the closing member 12 from the one end 67 to the connecting portion 69, that is, the front blade. Based on the weight of the portion 71, the closing member 12 is caused to generate a rotational moment in the D direction opposite to the direction of the rotational moment in the E direction around the shaft member 10 generated in the closing member 12 by its weight. It has become.

  Based on the total weight of the weight 66 and the rear blade portion 72, the rotational moment in the D direction generated in the closing member 12 around the shaft member 10 is the weight of the closing member 12 from the one end 67 to the connecting portion 69, that is, the front. Based on the weight of the blade portion 71, the rotational moment in the E direction around the shaft member 10 generated in the closing member 12 is smaller.

  The prohibiting mechanism 14 is attached to each of the pair of support arms 81 and is a locking rod 88 that comes into contact with the rear blade portion 72 by rotation in the E direction around the shaft member 10 of the closing member 12. Thus, the locking rod 88 is prohibited from rotating in the E direction beyond a certain degree around the shaft member 10 with respect to the opening / closing member 7 of the closing member 12 by the contact of the rear blade portion 72. doing. When the rear blade portion 72 is in contact with the locking rod 88 and the opening / closing member 7 is disposed at the passage opening position, the bent front blade portion 71 is connected so as to receive the air flow 11. It extends from the portion 69 toward the opening 22.

  Thus, when the opening / closing member 7 is disposed at the passage opening position, the closing member 12 closes the passage 4 based on the received air flow 11, that is, the E direction based on the weight of the front blade portion 71. The degree of the closing of the passage 4 by the closing member 12 is the magnitude of the rotating moment in the D direction generated in the closing member 12 based on the strength of the air flow 11. The higher the air flow 11 is, the higher the flow velocity of the air flow 11 is, and the faster the air flow 11 is, the larger the closing member 12 closes the passage 4. At 3 m / sec to 4 m / sec, as shown in FIG. 5, the weight 66 comes into contact with the attachment portion of the support arm 81 to the side edge 40 to close the passage 4 almost completely.

  The magnitude of the flow velocity of the air flow 11 that causes the passage 4 to be almost completely closed by the closing member 12 can be adjusted and set by changing the number of weights 66.

  The annular elastic seal member 17 includes an upper elastic seal portion 91 and a lower elastic seal portion 92 which are opposed to each other in the vertical direction V and extend in the horizontal direction H as a pair of elastic seal portions opposed to each other, and the upper elastic seal portion 91 and Lateral elastic seal portions 93 and 94 that are formed integrally with the lower elastic seal portion 92 and extend in the vertical direction V so as to face each other in the horizontal direction H as another pair of elastic seal portions facing each other. The upper elastic seal portion 91, the lower elastic seal portion 92, and the lateral elastic seal portions 93 and 94 are fitted to the fitting protrusion 26 so as to be exposed toward the opening 24 and attached to the intermediate hollow frame 27. It has been.

  When the passage 4 is closed by the opening and closing member 7, the upper elastic seal portion 91 is on the upper edge 38, the lower elastic seal portion 92 is on the lower edge 39, the lateral elastic seal portion 93 is on one side edge 40, and The lateral elastic seal portion 94 is brought into contact with and pressed against the other side edge 40 and is elastically deformed. The upper elastic seal portion 91, the lower elastic seal portion 92, and the lateral elastic seal portions 93 and 94 are arranged. The passage 4 is tightly closed by the opening / closing member 7 by contact and pressing with the upper edge 38, the lower edge 39, and the pair of side edges 40.

  In the above passage opening and closing device 1, when the rotation means 9 does not require ventilation in the building 2, as shown in FIG. 1, the outer edge 16 presses the annular elastic seal member 17 so that the outer edge 16 When the opening / closing member 7 is rotated to the passage closing position where the annular elastic seal member 17 is contacted to close the passage 4 and ventilation in the building 2 is required, the output rotating shaft 52 by the operation of the electric motor 46 is used. As shown in FIG. 4, the opening / closing member 7 is rotated to the passage opening position by rotating the opening / closing member 7 around the shaft member 6 in the A direction via the transmission means 47. When the opening / closing member 7 is opened, the air flow 11 from outside the building 3 through the opening 22 flows into the building 2 from the opening 24 through the passage 4, and the building 2 is ventilated.

  In the passage opening and closing device 1, the closing member 12 that receives the wind pressure of the airflow 11 according to the flow velocity of the airflow 11 when the opening and closing member 7 is disposed in the passage open state As a result of the rotation in the E direction, a gas (air) corresponding to the flow velocity of the airflow 11 flows into the building 2. When the flow velocity of the air flow 11 becomes 4 m / sec or more, for example, the closing member 12 receives a large wind pressure, and the weight 66 contacts the attachment portion to the side edge 40 of the support arm 81 as shown in FIG. It is rotated about the shaft member 10 in the D direction to such an extent that the passage 4 is largely closed, and the introduction of the high-speed air flow 11 into the building 2 is prevented. When the flow velocity of the air flow 11 becomes equal to or lower than the predetermined value, the closing member 12 is based on the weight of the front blade portion 71 that overcomes the rotational moment in the D direction around the shaft member 10 based on the total weight of the weight 66 and the rear blade portion 72. With the rotational moment in the E direction centering on the shaft member 10, as shown in FIG. 4, the rear blade portion 72 comes into contact with the locking rod 88, and the airflow 11 flows into the building 2 from the opening 24. Allow. In this example, since the weight 66 comes into contact with the attachment portion to the side edge 40 of the support arm 81 by the large rotation of the closing member 12 in the D direction, the sound at the contact (collision) is obtained. In order to prevent the occurrence of this, the weight 66 is preferably made of an elastic member.

  In the passage opening / closing device 1, as shown in FIG. 4 or 5, when the opening / closing member 7 is disposed in the passage open state, the rotation of the output rotation shaft 52 by the operation of the electric motor 46 causes the rotation via the transmission means 47. As shown in FIG. 1, the opening / closing member 7 is forcibly rotated in the B direction around the shaft member 6, and the outer edge 16 presses the annular elastic seal member 17 so that the outer edge 16 contacts the annular elastic seal member 17. When the opening / closing member 7 is rotated to the passage closing position for closing the passage 4, the air flow 11 from outside the building 3 is blocked by the opening / closing member 7, so that the ventilation in the building 2 through the passage 4 is stopped. Is done.

  By the way, according to the passage opening / closing device 1, the annular elastic seal member 17 is provided so as to surround the passage 4, and when the passage elastic member 17 is closed by the opening / closing member 7, the outer edge 16 of the opening / closing member 7 is provided. Therefore, the gap 37 between the lateral plate 36 and the side plate 42 is formed between both lateral plates of the opening / closing member 7, that is, both side plates 42, which are the side plates of the frame body 5. Even when the passage 4 is closed by the opening / closing member 7, the passage 4 can be closed completely and reliably, while the lateral plates 36 of the opening / closing member 7 are attached to both side plates 42. As a result of being able to rotatably support the gaps 37 between the both lateral plates 36 and the both side plates 42, smooth rotation of the opening / closing member 7 can be ensured.

  In the passage opening / closing device 1, the annular elastic seal member 17 is provided on the inner edge 15 of the frame 5, but instead, the annular elastic seal member 17 has an outer edge 16 that faces the inner edge 15 that defines the passage 4. Further, it may be provided so as to surround the passage 4 when the passage 4 is closed by the opening and closing member 7. In this case, the annular elastic seal member 17 contacts the inner edge 15 when the opening and closing member 7 closes the passage 4. It will be.

  In the above-described passage opening / closing device 1, the opening / closing member 7 is turned inward, but instead of this, as shown in FIGS. 6 to 8, the opening / closing member 7 may be turned over. The opening / closing member 7 includes the bearing plate 41 integrally extended from the lower ends of the front edges of the pair of horizontal plates 36 and the shaft member 6 fixed to the lower portion of the side plate 42 of the intermediate hollow frame 27. It is attached to the side plate 42 so as to be rotatable in the A direction and the B direction around the shaft member 6. The closing member 12 protrudes from the rear plate 33 of the opening / closing member 7 toward the opening 24 (see FIG. 1) and is rearward. The support arm 81 attached to each of the pair of side edges 100 of the plate 33 is provided so as to be rotatable in the D direction and the E direction about the shaft member 10 via the shaft member 10 and the connecting portion 69, and has an upper elasticity. Seal portion 91, lower elastic seal portion 92, and a pair of lateral elastic seals The annular elastic seal member 17 composed of the portions 93 and 94 (see FIG. 2) is fitted into the fitting protrusion 26 as the inner edge 15 so as to be exposed toward the opening 22 (see FIG. 1), and the intermediate hollow frame 27. The annular outer edge 16 of the opening / closing member 7 facing the inner edge 15 is composed of an upper edge 101, a lower edge 102 and a pair of side edges 100 of the rear plate 33, and the rotatable arm 60 is connected to Instead of the member 54, the closing member 12 is rotatably connected to one support arm 81 of the pair of support arms 81 attached to the lower portions of the pair of side edges 100 via a shaft member 59. The rotational moment generated in the D direction is smaller than the rotational moment generated in the closing direction 12 in the E direction.

  Also in the passage opening and closing device 1 shown in FIGS. 6 to 8, the rotating means 9 has the outer edge 16 in the same manner as the passage opening and closing device 1 shown in FIGS. 1 to 5 when ventilation in the building 2 is not required. Presses the annular elastic seal member 17, the outer edge 16 contacts the annular elastic seal member 17, and the opening / closing member 7 is rotated to the passage closed position where the passage 4 is closed, and ventilation in the building 2 is required. In this case, the opening / closing member 7 is rotated in the A direction around the shaft member 6 through the transmission means 47 by the rotation of the output rotation shaft 52 by the operation of the electric motor 46, and the opening / closing member 7 is rotated to the passage opening position. As shown in FIGS. 6 and 8, when the opening and closing member 7 is opened, the air flow 11 introduced from the outside 3 through the opening 22 (see FIG. 1) into the passage 4 in the outer hollow frame 23 is In the middle hollow frame 27 and the inner hollow frame 25 The air flows into the building 2 through the opening 24 (see FIG. 1) through the opening 4 and the building 2 is ventilated, while the opening / closing member 7 is disposed in the passage open state, The closing member 12 that receives the wind pressure of the airflow 11 according to the flow velocity is rotated in the D direction and the E direction around the shaft member 10, and as a result, gas (air) corresponding to the flow velocity of the airflow 11 enters the building 2. When the air flow 11 is introduced and the flow velocity of the airflow 11 becomes 4 m / sec or more, for example, the closing member 12 receives a large wind pressure, and the weight 66 is attached to the side edge 100 of the support arm 81 as shown in FIG. When the shaft member 10 is rotated about the shaft member 10 in the D direction to the extent that it is in contact with the part, the passage 4 is largely closed, the introduction of the high-speed air flow 11 into the building 2 is prevented, and the flow velocity of the air flow 11 becomes below a certain level. The closing member 12 includes the weight 66 and the rear blade portion 72. As shown in FIG. 6, the rear blade portion is a rotational moment in the E direction around the shaft member 10 based on the weight of the front blade portion 71 that overcomes the rotational moment in the D direction around the shaft member 10 based on the total weight. 72 is brought into contact with the locking rod 88, allowing the air flow 11 to flow into the building 2 from the opening 24 (see FIG. 1), and the passage opening and closing device 1 also surrounds the passage 4. Since the annular elastic seal member 17 provided in contact with the outer edge 16 of the opening / closing member 7 is closed when the passage 4 is closed by the opening / closing member 7, both ends in the lateral direction of the opening / closing member 7, that is, the horizontal plate 36, even if the side plates 42, which are the side plates of the frame 5, are rotatably supported with a gap 37 (see FIG. 1) between the horizontal plate 36 and the side plate 42, the opening / closing member 7 closes the passage 4. , Closing the passage 4 While the chain can be carried out completely and reliably, both lateral plates 36 of the opening and closing member 7 can be rotatably supported on both side plates 42 with a gap 37 between the both side plates 36 and both side plates 42. As a result, smooth rotation of the opening / closing member 7 can be ensured.

  Further, instead of turning the opening / closing member 7 inward or outward, the opening / closing member 7 may protrude as shown in FIGS. 9 and 10, and in this case, the opening / closing member 7 is formed by the pair of horizontal plates 36. The bearing plate 41 integrally extending from the upper end of each front edge and the shaft member 6 fixed to the upper part of the side plate 42 of the intermediate hollow frame 27 are connected to the side plate 42 in the A direction and B with the shaft member 6 as the center. The rotatable arm 60 has a shaft member 59 attached to one of the support arms 81 of the pair of side edges 100 (see FIG. 7). The rotational moment in the D direction generated in the closing member 12 around the shaft member 10 is smaller than the rotational moment in the E direction generated in the closing member 12 around the shaft member 10. As shown in FIG. 9 and FIG. Also in the road opening / closing device 1, when the rotation means 9 does not require ventilation in the building 2, the outer edge 16 has the annular elastic sealing member 17 in the same manner as the passage opening / closing device 1 shown in FIGS. When the opening / closing member 7 is rotated to the passage closed position where the outer edge 16 contacts the annular elastic seal member 17 and closes the passage 4 by pressing, and ventilation in the building 2 is required, the electric motor 46 As shown in FIGS. 9 and 10, the opening / closing member 7 is rotated in the direction A about the shaft member 6 through the transmission means 47 by the rotation of the output rotating shaft 52 by the operation of FIG. As described above, when the opening / closing member 7 is opened, the airflow 11 introduced from the outside 3 of the building through the opening 22 (see FIG. 1) into the passage 4 in the outer hollow frame 23 is converted into the intermediate hollow frame 27 and the inner hollow frame 27. Through passage 4 in frame 25 In the building 2 from the opening 24 (see FIG. 1), the building 2 is ventilated, while the opening / closing member 7 is arranged in the open state of the passage, As a result of the closing member 12 that receives the wind pressure of the airflow 11 being rotated about the shaft member 10 in the D direction and the E direction, a gas (air) corresponding to the flow velocity of the airflow 11 flows into the building 2 and the airflow 11 For example, when the flow velocity of 4 m / sec or more is reached, the closing member 12 receives a large wind pressure, and the weight 66 is in contact with the attachment portion of the support arm 81 to the side edge 100 as shown in FIG. When the shaft member 10 is rotated around the shaft member 10 in the direction D, the passage 4 is largely closed, and the introduction of the high-speed air flow 11 into the building 2 is prevented. E direction rotation to overcome D direction rotation moment As shown in FIG. 9, the moment causes the rear blade 72 to contact the locking rod 88, allowing the air flow 11 to flow into the building 2 from the opening 24 (see FIG. 1), and Also in the passage opening / closing device 1, the annular elastic sealing member 17 provided so as to surround the passage 4 is brought into contact with the outer edge 16 of the opening / closing member 7 when the passage 4 is closed by the opening / closing member 7. The opening / closing member 7 is supported at both ends in the horizontal direction, that is, on the side plates 42 which are the side plates of the frame 5 by the horizontal plate 36 with a gap 37 (see FIG. 1) between the horizontal plate 36 and the side plate 42. Even when the passage 4 is closed by the opening / closing member 7, the passage 4 can be completely closed, while the lateral plates 36 of the opening / closing member 7 are connected to the both side plates 42 by the lateral plates 36. With a gap 37 between each side plate 42 The results can be rolling freely supported, can ensure smooth rotation of the closing member 7.

  In the passage opening / closing device 1 shown in FIGS. 6 to 8 and the passage opening / closing device 1 shown in FIGS. 9 and 10, the transmission means 47 transmits the rotation of the output rotation shaft 52 to one support arm 81 of the pair of support arms 81. However, the rotation of the output rotation shaft 52 may be transmitted to the other support arm 81 of the pair of support arms 81 by a transmission means similar to the transmission means 47. Thus, by rotating the opening / closing member 7 with the rotational force transmitted from both the support arms 81, it is preferable that the annular elastic seal member 17 can be uniformly pressed when the passage 4 is closed by the opening / closing member 7.

DESCRIPTION OF SYMBOLS 1 Passage opening / closing device 2 In building 3 Outside building 4 Passage 5 Frame body 6, 10 Shaft member 7 Opening / closing member 8 Support mechanism 9 Rotating means 11 Air flow 12 Closure member 13 Support mechanism 14 Prohibition mechanism 15 Inner edge 16 Outer edge 17 Annular elastic seal member

Claims (7)

A frame body that defines a passage that communicates between the inside and outside of the building, an opening / closing member that is rotatably disposed in the passage and that opens and closes the passage, and that the opening / closing member is in a passage opening direction and a passage closing position toward the passage opening position. Rotating means forcibly rotating in the direction of closing the passage toward the passage, and the passage is closed by an air flow flowing from outside the building toward the inside of the building when the passage is opened by the opening and closing member while being rotatably supported by the opening and closing member. A closing member that is rotated in the closing direction, and is provided at the inner edge of the frame body that defines the passage so as to surround the passage, and contacts the outer edge of the opening and closing member that faces the inner edge when the passage is closed by the opening and closing member. and an annular elastic seal member, the closure member is provided with vanes, and a weight attached to the blade, the blade has one end and has a free end The end has a rotatably linked coupling part to the opening and closing member, and is located between the one end and the other end, the weight is channel opening and closing device provided at the other end of the blade. A frame body that defines a passage that communicates between the inside and outside of the building, an opening / closing member that is rotatably disposed in the passage and that opens and closes the passage, and that the opening / closing member is in a passage opening direction and a passage closing position toward the passage opening position. Rotating means forcibly rotating in the direction of closing the passage toward the passage, and the passage is closed by an air flow flowing from outside the building toward the inside of the building when the passage is opened by the opening and closing member while being rotatably supported by the opening and closing member. A closing member rotated in the closing direction, and an outer edge of the opening / closing member facing the inner edge of the frame body defining the passage so as to surround the passage when the opening / closing member closes the passage. and an annular elastic seal member in contact with the inner edge of the frame in the closed path by the closure member, tool and the blade, and a weight attached to the blade The blade has one end and the other end that are free ends, and a connecting portion that is located between the one end and the other end and is rotatably connected to the opening and closing member. The weight is a passage opening / closing device provided at the other end of the blade .   The passage opening and closing device according to claim 1, wherein the annular elastic seal member is made of an endless annular body.   The annular elastic seal member includes a pair of elastic seal portions opposed to each other and another pair of elastic seal portions formed integrally with the pair of elastic seal portions and opposed to each other. 4. The passage opening and closing device according to any one of 3.   The opening / closing member is rotatably attached to the frame at one edge thereof, and the closing member is rotatably supported on a surface of the opening / closing member facing the outside or inside of the building. A passage opening and closing device according to claim 1.   6. The passage opening and closing device according to claim 1, wherein the closing member is rotated in a direction to close the passage by an air flow when the opening and closing member is disposed at the passage opening position. The weight has a rotational moment in a direction opposite to the direction of the rotational moment around the connecting portion generated in the closing member based on the weight of the closing member from one end of the closing member to the connecting portion of the closing member. The passage opening and closing device according to any one of claims 1 to 6, wherein the passage opening and closing device is configured to be generated in the passage.

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