JP2018009379A - Differential Pressure Corresponding Door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door in which vent holes are provided in first and second surfaces of a door, and first and second shielding plate groups inside the door, and when a pressure difference occurs in the front and back of the door, ventilation is performed by using the displacement of hole location to thereby ease the differential pressure.SOLUTION: A door is provided for easing an atmospheric pressure difference of air occurring inside and outside the door. The door comprises: a ventilation unit for bringing a first vent hole into communication with a second vent hole between a first plate member 1 and a second plate member 2 of the door, and passing air of the first surface side into the second surface side; and a ventilation adjustor constituted of a link mechanism supporting unit for simultaneously driving first and second shielding plate groups 1-1, 2-1 provided in both inside of the first surface side and the second surface side of the ventilation unit. In the first vent hole of the first surface and the second vent hole of the second surface, and the shielding plate group coming in contact with the first surface side and the second surface side, pit holes are provided at the ratio of 30-80% by an aperture ratio of each surface. A space with the pressure difference is driven in the closure and ventilation state using the shielding plate by the ventilation adjustor, and thereby the vent holes are opened.SELECTED DRAWING: Figure 1

Description

  The present invention is a door provided in a building such as a building or a condominium, and when the pressure difference generated inside and outside the door is separated, particularly when the pressure difference between both sides of the door becomes very large, both sides of the door are ventilated. The present invention relates to a door that relaxes the pressure difference of the surface and makes it easy to open, and relates to a differential pressure support member that can easily open and close a door that partitions a space having a pressure difference.

The building is configured so that a space partitioned by a wall or the like by a door or the like can be moved back and forth as necessary. In recent years, a large number of highly airtight buildings have been constructed so as not to hear external noises or living sounds in the adjacent rooms, and to further improve the air conditioning effect. By increasing the airtightness of the space surrounded by walls, etc., it is possible to prevent noises from being heard, or to make air conditioning effective, but on the other hand, natural introduction of outside air is not performed and forced It is necessary to consciously replace room air with ventilation.

Conventionally, a pressurized smoke-proof facility may be installed in a basement room or a room for getting on and off an emergency elevator. A wall of a fire prevention compartment is provided between the attached room and the corridor, and a door for entering and exiting the attached room is provided on this wall. 2. Description of the Related Art Conventionally, in buildings and condominiums and the like, since there is a demand for improving airtightness and soundproofing, a seal structure using a seal packing or the like has been proposed for a door frame (see Patent Documents 1 and 2).
This pressurized smoke proofing equipment pressurizes the room and supplies fresh air to the attached room when a fire occurs, thereby preventing the fire smoke from entering the attached room. Is.

  However, in such a pressurized smoke-proof facility, driving the pressurized fan increases the differential pressure between the attached room and the corridor, which may prevent the attached door from being opened.

However, in buildings and condominiums with high airtightness and soundproofing, a very large pressure difference occurs between the inside and outside of the door due to the smoke exhaust device that operates in the event of a fire, and the door is suddenly pulled when it opens. The problem that the door cannot be opened occurs.
In order to solve the above problem, various differential pressure eliminating devices have been proposed as a differential pressure eliminating device for a door that relieves an atmospheric pressure difference between indoors and outdoors (see Patent Documents 3 and 4).

  Therefore, a structure has been proposed in which an opening is provided in the door and a differential pressure relaxation mechanism is provided in the opening (see Patent Document 1). That is, the differential pressure relaxation mechanism includes a movable body that is rotatably supported in the opening, and the rotation shaft of the movable body is urged in a direction in which the movable body is always closed by the urging device. The movable body is provided with a latch for fixing the operating body to the wall and a latch for fixing the movable body to the door. These latches are connected to the door knob via a transmission drive mechanism, and the door knob door. It is released by opening operation.

It has been proposed to provide a door structure that can prevent the differential pressure on both sides of the door from becoming excessively large even when the handle is not operated (see Patent Document 2).

Improved the conventional differential pressure door, which could cause fingers to get caught between the shielding plate and the face plate, and is used in a room that is maintained at a room pressure different from the outside air pressure that can be opened instantly with a light force. A differential pressure door is provided by providing a differential pressure door or a door frame with a pressure generation device that generates a pressure force (see Patent Document 5).

According to the structure of the door, by opening the door knob, the differential pressure relief mechanism is released to eliminate the differential pressure, and the door can be easily opened by removing the door latch.

Japanese Patent Laid-Open No. 7-259407 Japanese Patent Laying-Open No. 2015-155616 Japanese Patent Laid-Open No. 9-4339 JP 2012-107466 A JP 2012-150081 A

  In a general fire door structure, it has flame barrier performance and smoke barrier performance, and is a partial specification of the wall. For this reason, when smoke exhaust windows, mechanical smoke exhaust devices, fresh air intake devices, etc. are activated in the event of a fire, a pressure difference occurs between the inside and outside rooms separated by the fire door, causing trouble when opening the door and evacuating. It was. Therefore, it is required to provide a door structure that can open a door that is under pressure due to a pressure difference and does not interfere with evacuation.

  However, according to the configuration of the differential pressure reducing device, in order to eliminate the differential pressure between the room and the outside, a small door or a small window is attached to the door separating the inside and the outside, and the room and the outside are communicated by opening and closing the part. By creating a space and ventilating, the pressure difference is eased and the door is easily opened. Thereby, there is a problem that the number of parts of the metal fitting is large and the cost is high and the design is not good including the assembly man-hours.

  In addition, since it is desired that it can be used as a general entrance door in normal times, when the door is opened, the door end portion with the operation lever is folded first and ventilated to reduce the pressure difference between the inside and outside. After that, the differential pressure relief door or the underdoor that opens the whole is slightly opened and ventilated to ease the pressure difference between the inside and outside, and then the differential pressure relief door that opens the whole is difficult to use as a general entrance door.

  The differential pressure relief door has a door bracket for opening and closing the door and a door for opening and closing the door and a small window and a small window, in addition to a hanging bracket that opens and closes the entire door, a drive bracket that closes the door, and a lock bracket that holds the door. It is a mechanism that creates a clearance space by attaching and operating the metal fittings, vents, and relaxes the pressure difference between the inside and outside. Relying on this mechanism, if there is a problem with a fitting that has been adjusted to take account of the pressure difference, or if the pressure difference exceeds the expected value for some reason, the internal and external pressure difference does not relax well, making it easy. There is also a problem that it may not be possible to open the door.

  In order to solve the above-mentioned problems, it is a differential pressure-compatible device that can be incorporated in a door so that it can be used as a general doorway, and the first surface and the second surface of the door communicate with each other. Provided with a ventilation part and provided with a shielding plate group that swings in the ventilation part to open and close the ventilation part. If a pressure difference occurs between the first surface side and the second surface side of the door and the opening and closing becomes heavy, the lock When the lever at the top of the lever handle is turned in the opening direction, air flow from the higher to the lower air pressure, the pressure difference between the inside and outside is alleviated, the door can be opened easily, the first surface of the door When the difference in pressure between the side and the second surface side disappears, it is desired that the ventilation portion be closed by the weight of the shielding plate.

The ventilation part of the space partitioned by the skeleton of the door and the middle bone is swung by the weight of the shielding plate with the link mechanism support portion as a fulcrum in the first shielding plate group and the second shielding plate group, and other swinging metal fittings As the assembly is completed in the factory and the operation of the product can be confirmed, the metal parts cost can be reduced and the reliability can be improved. An object of the present invention is to provide a door with a differential pressure corresponding device that uses the spring force of a winding spring so that it can be easily performed.

A first air hole provided in a first plate member constituting the first surface on the side where the air pressure of a room partitioned by the door is increased in the door for relaxing the pressure difference of air generated inside and outside the door; A second ventilation hole provided in the second plate member that constitutes the second surface on the side facing the first surface at the door and having a relatively low air pressure, and a first shielding plate with a ventilation hole built in the door Group and the second shielding plate group are aligned, the first ventilation hole, the shielding plate group ventilation hole, and the second ventilation hole are communicated with each other, and the air on the first surface side passes through the second surface side. And a first shielding plate group and a second shielding plate group provided on both inner sides of the ventilation portion and the first ventilation hole side on the first surface side and the second ventilation hole side on the second surface side of the ventilation portion. And a ventilation adjuster comprising a connecting portion for simultaneously transmitting and driving the operation of the handle to the shielding plate group. Similarly, the air holes and the second air holes on the second surface are respectively provided with air holes having diameters of 2 to 10 mm in a ratio of 30 to 80% in terms of the opening ratio of the respective surfaces, so that the first shielding is in contact with the first surface side. The air flow adjusting body having the second shielding plate in contact with the plate and the second surface side drives the internal and external spaces having a pressure difference to a closed state and a vented state by the shielding plate group to ease the pressure difference and easily open and close the door. It is a differential pressure compatible door that is a means to become

The ventilation portion hits a gap portion of a door composed of a first plate member, a second plate member, and a hard bone and a middle bone, and faces the first shielding plate group on the inner side of the first surface plate having the first ventilation hole. The second shielding plate group is in close contact with the second surface side inner side having the second ventilation hole, and the positions of the first and second ventilation holes and the first and second shielding plate groups are determined by the ventilation adjusting body. The ventilation holes on the first surface and the ventilation holes on the second surface are shut off and set in a closed state. When a differential pressure occurs between the doors, the shielding plate group is driven by the operation of the link mechanism support section. Thus, the first and second plate members and the shielding plate group that are in close contact with each other are separated from each other, and the inside and outside of the door are in a vented state to reduce the pressure difference, thereby facilitating the opening and closing of the door.

In a normal state where no differential pressure is generated, when the ventilation between the inside and outside is blocked, the first and second plate members are linked by the weight of the first and second shielding plate groups by the weight of the first and second shielding plate groups. In order to release the close contact between the two shielding plate groups when the pressure difference occurs and the close contact between the two shielding plate groups is released, the rotation operation of the handle is controlled by the release device. Changed to horizontal operation, with two-blade push-up plate attached to the connecting shaft driven horizontally, with a vent hole with a diameter of 2 to 10 mmφ, or with a large opening at both upper and lower ends, or vent Ascending force can be given to the pins with rotating rollers attached to the first and second shielding plate groups selected from those without blind plates, and the shielding plate groups can be raised simultaneously. In order to ease the differential pressure, in order to facilitate the push-up drive of the shielding plate group, the handle of the release device is rotated, and the rotational force of the handle is transmitted to the connecting shaft. Has a winding spring with a spring force slightly weaker than its own weight

In the differential pressure compatible door, the thickness of the fireproof door is 40 to 70 mm, a metal plate of 1 to 3 mm is used as the material, the space portion of the door is divided into 2 to 5, and the first shielding is performed in each section. An air flow adjusting body that is slidable in the vertical direction and includes a plate, a second shielding plate, and a link mechanism support portion is provided, and the handle release device and each air flow adjusting body can be interlocked with a connecting shaft. The close contact and separation with the inner surface of the plate member can be repeated by up and down sliding, and the pushing force to the door caused by the pressure difference can be reduced by ventilation.

The vent holes of the first and second face plates are circular or rectangular and are perforated through the first surface and the second surface of the door in a geometrical and design manner. In the second surface, each surface is perforated so as to have a regular opening ratio of 30 to 70%, and regularly arranged on both sides of the door at regular intervals, The second vent hole on the second surface and the first shielding plate group in contact with the inner side of the first surface plate and the second shielding plate group in contact with the inner side of the second surface plate are not aligned with each other at the time of bonding.

  According to the present invention, when the handle is not operated, the fire door can have flame shielding performance and smoke shielding performance, and a pressure difference is generated in a room separated by the door due to natural environment or fire. In this case, by operating the handle at the top of the handle, the air hole is opened, air flows from the higher pressure to the lower pressure, the differential pressure is reduced, and the door can be opened easily.

 When the handle is grasped and operated, the handle and the opening / closing mechanism are connected by the handle interlocking mechanism. In this case, the blades move to the left and right in conjunction with the handle, the roller-attached pins of the shielding plate group are pushed up and the shielding plate group is pushed up, the vent hole position becomes the same, and the opening is opened. Thereby, air distribute | circulates through this opening part, and the differential pressure | voltage of the door both sides falls. If the handle is returned after the evacuees pass, the shielding plate group can be lowered by its own weight, block the vent hole, and have an effect as a fire door.

The same as the manufacturing method of general doors, using the space inside the door made up of strong bones and middle bones, and making it a simple structure differential pressure relief type door that does not require special special hardware, operation method It is a simple, safe and easy-to-use differential pressure door. The ventilation holes can also be penetrated geometrically, and the surrounding design can be matched.

   The only member that causes ventilation to relieve the differential pressure is the shielding plate group that swings at the ventilation portion in the door. The movement of the shielding plate group uses the link mechanism support portion as an axis, and the first plate material and the first plate material. The adhesive and peeling are repeated on the inner surface of the two plate members, no special special metal fitting is required, the operation method is very simple, and the handle can be simply turned in the direction of the indication label.

  Next, when attaching to a place where there is a pressure difference across the door on a daily basis, use the metal handle that doubles as the door opening / closing lever handle and vent hole release handle, and remove the door holding latch by operating the lever handle. At the same time, the door can be opened after the vent hole is opened and vented to reduce the pressure difference between the inside and outside.

Longitudinal and transverse sectional views showing the ventilation state and closed state of the differential pressure relief door A is a longitudinal sectional view in a state where the shielding plate group is in close contact with the surface plate. B is a longitudinal sectional view in a state where the shielding plate group is separated from the surface plate. Is a cross-sectional view of the state where the shielding plate group is in close contact with the surface plate. D is a cross-sectional view of the state where the shielding plate group is peeled off from the surface plate. Figure showing the relative position of a door with geometric hole processing on the door surface plate and the bone shielding plate group incorporated in the door A partial detailed view showing the operating mechanism of the shielding plate group A is a partial view when a handle that is operated when a differential pressure is generated with a normal opening and closing lever handle B is a normal opening and closing lever handle that is also used as an operating handle Figure C is a partial view of the evacuation release panic handle and actuating handle. A vertical cross-sectional view showing the position of the frame by drilling the door surface plate, A is a shield plate is closely attached to the inside of the door surface plate, a vertical cross-sectional view in a closed state B is a shield plate is peeled inside the door surface plate, A longitudinal sectional view C of the air-permeable state shows the deviation of the NC machining holes, the solid line shows the surface holes of the first and second shielding plate groups, the dotted line shows the surface holes of the first and second plate members, and the arrows The hole diagram D shows the track of the holes and shows the positions of the holes in the state where the shielding plate groups are in close contact with each other. The first and second plate members and the first and second shielding plate groups are peeled off and the hole positions are aligned. E is a state diagram in which the shield plate group of the link mechanism support metal fitting instructed to fix the first and second shield plate groups is in close contact with the door ribs. 2 State diagram in which the shield plate group of the link mechanism support bracket for fixing the shield plate group is peeled A cross-sectional view showing the position of the frame by drilling the door surface plate, A is a cross-sectional view in which the shielding plate is in close contact with the inside of the door surface plate, B is a state in which the shielding plate is peeled inside the door surface plate, Cross-sectional view of the air-permeable state C is a diagram showing a deviation between the hole machining position of the surface plate and the hole machining position of the shielding plate. D is a diagram showing the overlap between the hole machining position of the surface plate and the hole machining position of the shielding plate. The figure which shows the gap of the hole processing position of the surface board and the hole processing position of the shielding plate A view of the shield plate group and the interlock device before and after the operation is omitted. A is a view of the shield plate group and handle in the door and before the interlock device is activated. B is a shield plate group and handle and interlock in the door. Figure after operation Comparison enlarged view before and after operation of shielding plate, operation handle and auxiliary force spring A shows the handle position, shielding plate position, and spring position in close contact with the surface plate material of the shielding plate group with NC holes in the door. Partial enlarged view B is a partially enlarged view showing the handle position, shielding plate position, and spring position in a state where it is peeled off from the surface plate material of the shielding plate group with NC holes in the door. State diagram showing an example of NC hole machining of the shielding plate group A is a partial view of the shielding plate when the gap between the shielding plate and the surface plate is used without drilling the shielding plate, B is a rectangular hole above and below the shielding plate Shielding plate part figure C when the shield plate is processed and ventilated C is a shielding plate part figure D when the shield plate is subjected to a predetermined hole processing. Figure of A with double pressure applied to double doors A is a figure of a dedicated evacuation door that relieves differential pressure in conjunction with an evacuation panic handle. B is normally opened and closed with a lever bundle. Figure of the door that opens and closes after the handle is operated to reduce the differential pressure

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a vertical and horizontal cross-sectional view simply showing an embodiment of the present invention using a general doorway. Ventilation is not possible when the shielding plate inside the door is in close contact with the inner surface of the surface plate, and ventilation is possible when the shielding plate inside the door is peeled off from the inner surface of the surface plate, reducing the pressure difference inside and outside the room separated by the door. The outline to show is shown. It can be changed from the state of A and C incapable of ventilation to the state of ventilation of B and D by a handle operation.

Fig. 2 shows the appearance of a door with a machined surface plate hole that has been subjected to NC processing. This is a perspective representation of the mounting state of the bracket. FIG. 3 is a partial view illustrating the working hardware. Normally used as an entrance / exit, it can be operated by opening / closing the operating handle when differential pressure occurs and opening / closing is difficult, and it is possible to use both the open / close lever and the operating lever in places where differential pressure always occurs. . Furthermore, in the case of an evacuation door, it is linked with a panic handle and expresses the proper use of metal fittings that can evacuate after the refugee relieves the differential pressure. 4 to 5 are detailed cross-sectional views showing a change from the state of not venting to the state of venting, and the surface hole processing of the first and second plate members in the state of not venting, first, and It represents how the second shielding plate group changes when the hole is formed and when the link mechanism support fitting is ventilated.

FIG. 6 shows the overall arrangement of the shielding plate group installed on the door. The shielding plate group, the balance winding spring for the shielding plate, the link mechanism support bracket, the connecting shaft with the shielding plate group lifting blade, the balance winding spring for operation, and the operation The positional relationship between the handle and the normal entry / exit handle is expressed in a state of not venting and a state of venting. FIG. 7 shows an example of NC hole machining of the shielding plate, and is a comparative enlarged view before and after the operation of the shielding plate, the operating handle, and the auxiliary force spring. Handle position, shielding plate position, spring position in the state where the shield plate group processed with NC holes is in close contact with the inner surface of the door surface plate material, and handle position, shielded when peeled from the surface plate material of the shield plate group processed with NC holes in the door This shows the plate position and spring position.

FIG. 8 shows four examples of NC hole machining by changing the air flow rate for a predetermined flow rate in the design book. Depending on the magnitude of the generated differential pressure, four patterns are expressed: no NC processing, rectangular vent holes above and below the shielding plate, predetermined NC hole processing, and maximum flow rate NC processing. FIG. 9 represents the case where the double door is subjected to differential pressure processing. When the evacuation door is designed to relieve the differential pressure by interlocking with the evacuation panic handle for double doors, and normally, it opens and closes with a lever bundle, and when the differential pressure is generated, the handle is operated and the differential pressure is relieved. The case of the door to be shown is shown.

Hot-dip galvanization that regulates the air pressure difference between the doors that are difficult to open and close due to air pressure difference on both sides of the door due to the building wind etc. Frames and doors were made using steel plate materials.
The first and second plate members that make up the door surface use 1.6 tmm of steel plate, the first and second shielding plate groups use 0.8 mm of steel plate, and the internal dimensions in the assembled state 0.95mx2.1m, door thickness was 50mm. One space in the door was divided into four gap spaces by rivets and middle bones, and four sets of ventilation adjusting bodies were attached.

Two shielding plates are fitted in each gap space in the door, and the shielding plates are provided with four link mechanism support brackets on the left and right sides, and can be moved up and down. A push-up pin with a roller is protruded and attached to the connecting shaft side, and the inner and outer shielding plates are simultaneously pushed up by two blades for pushing up the connecting shaft. The connecting shaft has two blades for pushing up at the position of the push-up pin with a roller in the previous period, interlocking so that four sets of eight shielding plates move simultaneously, and at the tip is an assisting force to return the handle to its original position A winding spring was attached, and a balance winding spring against the dead weight of the shielding plate was also attached at the top. In the state of no ventilation, the first plate member vent hole processing and the first shield plate group vent hole processing are positioned to close each other, and the second plate member vent hole processing and the second shield plate group vent hole. The machining was also performed at a position where the mutual hole positions were closed.

  The operation | movement of the said ventilation adjustment body was confirmed and assembled, the inspection lid was attached about the part which needs replacement | exchange, and the door was assembled. Similarly, the first vent hole on the first surface, the second vent hole on the second surface, the shielding plate in contact with the first surface side, and the shielding plate group in contact with the second surface side are each passed through with a diameter of 5 mmφ and a pitch of 11 mm. The pores were formed on the respective surfaces at an opening ratio of about 70%, and NC holes were processed geometrically and designally to secure a predetermined amount of airflow for calculation, thereby completing the product. After the completion inspection of the product, it was carried to the construction site and installed.

When there is a pressure difference across the door, this door is a metal fitting that doubles as a lever handle for opening and closing the door and a handle for releasing the vent hole, and the lever is operated to release the latch for holding the door and open the vent hole. The door could be opened after ventilating and reducing the pressure difference between the inside and outside.

Similarly to Example 1, a frame and a door were manufactured using a material of a hot dip galvanized steel sheet specified in JIS G3302 for the door as shown in FIG.
The first and second plate members that make up the door surface use 1.6 tmm of steel plate, the first and second shielding plate groups use 0.8 mm of steel plate, and the internal dimensions in the assembled state 0.95mx2.1m, door thickness was 50mm. One space in the door was divided into three gap spaces by rivets and middle bones, and three sets of ventilation adjusting bodies were attached.

Two shielding plates are fitted in each gap space in the door, and the shielding plates are provided with four link mechanism support brackets on the left and right sides, and can be moved up and down. A push-up pin with a roller is protruded and attached to the connecting shaft side, and the inner and outer shielding plates are simultaneously pushed up by two blades for pushing up the connecting shaft. The connecting shaft has two blades for pushing up at the position of the push-up pin with a roller in the previous period, interlocking so that three sets of six shielding plates move simultaneously, and at the tip is an auxiliary force for returning the handle to the original position. A winding spring was attached, and a balance winding spring against the dead weight of the shielding plate was also attached at the top. In the state of no ventilation, the first plate member vent hole processing and the first shield plate group vent hole processing are positioned to close each other, and the second plate member vent hole processing and the second shield plate group vent hole. The machining was also performed at a position where the mutual hole positions were closed.

  The operation | movement of the said ventilation adjustment body was confirmed and assembled, the inspection lid was attached about the part which needs replacement | exchange, and the door was assembled. Similarly, the first vent hole on the first surface, the second vent hole on the second surface, the shielding plate in contact with the first surface side, and the shielding plate group in contact with the second surface side are each passed through with a diameter of 7 mm and a pitch of 15 mm. The pores were formed on the respective surfaces at an opening ratio of about 60% and geometrically and designally, NC holes were processed to ensure a predetermined amount of airflow for calculation, thereby completing the product. After the completion inspection of the product, it was carried to the construction site and installed.

This door is a metal fitting that doubles as a door opening / closing lever handle and a vent release handle when there is a pressure difference across the door. However, it was also possible to open the door after releasing the internal shielding plate group and ventilating the pressure difference between the inside and outside.

Similarly to Example 1, in the differential pressure compatible door, the thickness of the fire prevention door is 50 mm, a metal plate of 1 to 3 mm is used as a material, the space portion of the door is divided into four sections, and each section is divided into four sections. A ventilation adjustment body that is slidable in the vertical direction and includes the first shielding plate, the second shielding plate, and the link mechanism support portion is provided, and the handle release device and each ventilation adjustment body can be interlocked with a connecting shaft.

The vent holes of the first and second face plates are circular or rectangular and are perforated through the first surface and the second surface of the door in a geometrical and design manner. In the second surface, each surface is perforated so as to have a regular opening ratio of 30 to 70%, and regularly arranged on both sides of the door at regular intervals, The second air hole on the second surface and the first shielding plate group in contact with the inner side of the first surface plate and the second shielding plate group in contact with the inner surface of the second surface plate were not matched with each other at the time of bonding.

In a normal state where no differential pressure is generated, when the ventilation between the inside and outside is blocked, the first and second plate members are linked by the weight of the first and second shielding plate groups by the weight of the first and second shielding plate groups. In order to release the close contact between the two shielding plate groups by setting the air holes so that they are in close contact with each other and the positions of the vent holes are not occluded, and the differential pressure is generated, the rotating operation of the handle is controlled by the release device. The horizontal movement of the two-blade push-up plate attached to the connecting shaft gives a rising force to the pins with rotating rollers attached to the first and second shielding plate groups, and simultaneously lifts the shielding plate group. I let you.

In order to ease the differential pressure, in order to facilitate the push-up drive of the shielding plate group, the handle of the release device is rotated, and the rotational force of the handle is transmitted to the connecting shaft. Installed a winding spring with a spring force slightly weaker than its own weight.

1: Door first plate member 1-1: First shielding group 1-1-1: First shielding group 1-1-2: First shielding group 1-1-3: First shielding group 1-2: First 1 plate material processing hole 1-3: 1st shielding plate processing hole 2: door 2nd plate member 2-1: 2nd shielding plate 2-1-1: 2nd shielding plate 2-1-2: 2nd shielding plate 2 -1-3: Second shielding plate 2-2: Second plate material processing hole 2-3: Second shielding plate processing hole 3: Link mechanism support portion 4: Winding spring 4-1: Auxiliary force winding spring for connecting shaft return 5: Middle bone in the door 6: Upper strength in the door 7: Lower strength in the door 8: Side strength in the door 9: Side strength in the door 10: Lateral reinforcement for the pin with the shielding plate rotation roller 11: Rotation roller Attached pin H: handle H1: connecting shaft H2: pin push-up blade with rotating roller J1: door opening / closing lever handle 100: side door frame 101: upper door frame 102: hulling A1: hole machining A2 Hole drilling A3: hole processing PH1: closing lever handle PH2: Panic handle

Claims (6)

  A first air hole provided in a first plate member constituting the first surface on the side where the air pressure of a room partitioned by the door is increased in the door for relaxing the pressure difference of air generated inside and outside the door; A second ventilation hole provided in the second plate member that constitutes the second surface on the side facing the first surface at the door and having a relatively low air pressure, and a first shielding plate with a ventilation hole built in the door Group and the second shielding plate group are aligned, the first ventilation hole, the shielding plate group ventilation hole, and the second ventilation hole are communicated with each other, and the air on the first surface side passes through the second surface side. And a first shielding plate group and a second shielding plate group provided on both inner sides of the ventilation portion and the first ventilation hole side on the first surface side and the second ventilation hole side on the second surface side of the ventilation portion. And a ventilation adjuster comprising a connecting portion for simultaneously transmitting and driving the operation of the handle to the shielding plate group. Similarly, the air holes and the second air holes on the second surface are respectively provided with air holes having diameters of 2 to 10 mm in a ratio of 30 to 80% in terms of the opening ratio of the respective surfaces, so that the first shielding is in contact with the first surface side. The air flow adjusting body having the second shielding plate in contact with the plate and the second surface side drives the internal and external spaces having a pressure difference to a closed state and a vented state by the shielding plate group to ease the pressure difference and easily open and close the door. A differential pressure compatible door characterized by The ventilation portion hits a gap portion of a door composed of a first plate member, a second plate member, and a hard bone and a middle bone, and faces the first shielding plate group on the inner side of the first surface plate having the first ventilation hole. The second shielding plate group is in close contact with the second surface side inner side having the second ventilation hole, and the positions of the first and second ventilation holes and the first and second shielding plate groups are determined by the ventilation adjusting body. The ventilation holes on the first surface and the ventilation holes on the second surface are shut off and set in a closed state. When a differential pressure occurs between the doors, the shielding plate group is driven by the operation of the link mechanism support section. The first and second plate members and the shielding plate group that are in close contact with each other are separated from each other, and the inside and outside of the door are in a vented state to reduce the pressure difference, thereby facilitating the opening and closing of the door. The differential pressure corresponding door according to claim 1 In a normal state where no differential pressure is generated, when the ventilation between the inside and outside is blocked, the first and second plate members are linked by the weight of the first and second shielding plate groups by the weight of the first and second shielding plate groups. In order to release the close contact between the two shielding plate groups when the pressure difference occurs and the close contact between the two shielding plate groups is released, the rotation operation of the handle is controlled by the release device. Changed to horizontal operation, with two-blade push-up plate attached to the connecting shaft driven horizontally, with a vent hole with a diameter of 2 to 10 mmφ, or with a large opening at both upper and lower ends, or vent A lifting force is applied to the pins with rotating rollers attached to the first and second shielding plate groups selected from those having no blind plates, and each shielding plate group can be raised simultaneously. The differential pressure corresponding door according to claim 1 or claim 2. In order to ease the differential pressure, in order to facilitate the push-up drive of the shielding plate group, the handle of the release device is rotated, and the rotational force of the handle is transmitted to the connecting shaft. The differential pressure corresponding door according to any one of claims 1 to 3, wherein a winding spring having a spring force slightly weaker than its own weight is attached. In the differential pressure compatible door, the thickness of the fireproof door is 40 to 70 mm, a metal plate of 1 to 3 mm is used as the material, the space portion of the door is divided into 2 to 5, and the first shielding is performed in each section. An air flow adjusting body that is slidable in the vertical direction and includes a plate, a second shielding plate, and a link mechanism support portion is provided, and the handle release device and each air flow adjusting body can be interlocked with a connecting shaft. The contact with and separation from the inner surface of the plate member can be repeated by up and down sliding, and the pushing force to the door caused by the pressure difference can be alleviated by ventilation. Described differential pressure compatible door The vent holes of the first and second face plates are circular or rectangular and are perforated through the first surface and the second surface of the door in a geometrical and design manner. In the second surface, each surface is perforated so as to have a regular opening ratio of 30 to 80%, and regularly arranged on both sides of the door at regular intervals, The second vent hole on the second surface, and the first shielding plate group in contact with the inner side of the first surface plate and the second shielding plate group in contact with the inner side of the second surface plate are configured so that the vent holes do not coincide with each other. The differential pressure corresponding door according to any one of claims 1 to 5.