JP2019044576A - Door with openable pressure reducing opening and pressure reducing panel latch device - Google Patents

Abstract

To provide a door that facilitates the opening and closing of a door with an openable pressure reducing opening.SOLUTION: There is provided a pressure reducing panel latch device mounted to a door body comprising a door body 10, a pressure reducing panel 22 mounted displaceably between the pressure reducing opening closing position and the pressure reducing opening opening position, a door latch device 26 mounted on the door body 10 having a door body latch bolt 32 which is displaceable between a door locking position and a door unlocking position by a handle 30 and a turning operation of the handle, and a pressure reducing panel latch bolt 42 displaceable between the panel locking position and the panel unlocking position in conjunction with the pivoting of the pivoting member about the handle shaft when the swing member fixed to the handle shaft and the pressure reducing panel 22 are in the pressure reducing opening closing position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a door provided with an openable / closable decompression opening suitable for a fire door or the like, and a decompression panel latch device used for the door.

  Fire doors are normally open type that normally open and close the door opening (passage opening) at the time of fire, and normally closed type in which the door opening is normally closed so that the door can be opened and evacuated at the time of fire There is.

  When the fire door is about to close or open at the time of the fire, the air pressure applied to the fire door sometimes prevents the movement of the door, and various measures have been made to eliminate this. For example, Patent Document 1 discloses a normally closed type fire door provided with an opening and closing that can be opened and closed. This fire protection door is designed to eliminate the pressure difference which is generated on the front and back sides of the door and hinders the opening operation by opening the decompression opening.

  More specifically, the normally closed fire door disclosed in Patent Document 1 has a door body pivotable about a pivot axis extending vertically along one side edge (the term in Patent Document 1) And a decompression opening (opening) having a shape which is recessed in the vertical middle portion of the other side edge of the door body so as to extend from the other side edge toward the one side edge. A portion 6) and a decompression panel (movable body 10) provided so as to close the decompression opening and pivotable about a pivot line extending parallel to the pivot axis. When the door opening (passage 3) is closed, the panel latch (latch 13) provided on the pressure reducing panel is fitted in the latch hole provided on the door body to close the pressure reducing panel. The door body latch (latch 12) also provided on the depressurizing panel is engaged with the latch hole provided on the door opening side edge to hold the door body in the closed state. It has become so. At the time of fire, by operating the handle (door knob 8) provided on the depressurization panel, both the door body latch and the panel latch are pulled out from the corresponding latch holes, and in that state The depressurizing panel is opened by the difference in pressure applied to the front and back surfaces of the fire door, whereby the difference in pressure is eliminated and the door main body is easily opened.

Japanese Patent Application Laid-Open No. 7-259407

  As described above, in the fire door disclosed in Patent Document 1, a latch device including a handle, a latch for the door main body, a latch for the panel, etc. is attached to a pressure reducing panel pivoting relative to the door main body. When it is desired to open the door, the depressurizing panel provided with the latch device is in the open state (i.e., in a state of being obliquely angled with respect to the door body). According to the description of Patent Document 1, in this state, "it is possible to blame outside by pushing the fire door 5, etc." (the lowermost row), and the door is opened to open the door body (fire door 5). Instead of using a pressure reducing panel angled with respect to the main body and a handle provided thereon, the door main body is pressed.

  An object of the present invention is to provide a latch device in a door body so as to make the opening operation of the door body easier.

That is, the present invention
A door body pivotable about a first axis extending vertically along one of the side edges, the door body being displaceable between the door opening closed position and the door opening opening position;
A pressure reducing panel provided in a pressure reducing opening provided so as to penetrate from the front surface to the back surface of the door body, the first side edge closer to the one side edge of the door body, and the door And a second side edge close to the other side edge of the body, pivotable about a second axis extending perpendicularly between the first side edge and the second side edge, and depressurized A decompression panel which is mounted displaceably between the opening closure position and the decompression opening opening position;
A door latch device mounted within the door body adjacent to the other side edge of the door body, the door latch device being horizontally extended so as to penetrate the door body from the front side to the back side, A handle shaft rotatable about an axis, a handle fixed to the handle shaft, and an interlock with the handle shaft rotated via the handle when the door body is in the door opening closed position A door locking position fitted in a door locking hole provided on a door opening side edge which protrudes outward from the other side edge of the door body to define the door opening; A door latch device having a door body latch bolt which is displaceable between a door unlocking position retracted into the door
A panel locking position fitted to a panel locking hole provided on a side edge of the depressurizing panel in conjunction with the rotation of the handle shaft when the depressurizing panel is in the depressurizing opening closed position; A pressure reduction panel latch bolt which is displaceable between a panel unlocking position pulled back from the panel locking hole and the panel locking position;
Providing a door with an openable / closable decompression opening.
Here, the handle means a handle for latch operation such as a knob or a lever.

  In the door according to the present invention, the latch bolt for decompression panel is displaced between the panel unlocking position and the panel locking position by operating the handle of the door latch device provided in the door main body, and for the door main body Since the latch bolt is displaced between the door unlocking position and the door locking position, the door body with the door body latch bolt in the door unlocking position is the door opening closed position and the door opening position. When it is displaced between the positions, it can be carried out with the handle regardless of the depressurizing panel inclined with respect to the door body.

In particular,
And a pivoting member fixed to the handle shaft and extending parallel to the front and back surfaces of the door body away from the handle shaft,
The pressure reducing panel latch bolt is interlocked with the swinging movement of the swinging member about the handle shaft when the pressure reducing panel is in the pressure reducing opening closed position, and the panel locking position; It can be displaceable between the unlocking position.

At this door,
It further comprises a magnetic adsorption device for magnetically attracting the pressure reducing panel located on the pressure reducing opening open position side with respect to the pressure reducing opening closed position to the pressure reducing opening closed position,
The magnetic adsorption device comprises a first magnetic adsorption member provided at a second side edge of the pressure reducing panel;
A second magnetic attraction member supported by the door body;
An adsorption position where the second magnetic adsorption member is brought into contact with the first magnetic adsorption member of the decompression panel in the decompression opening closed position and an adsorption position of the decompression panel in the decompression opening closing position A second magnetic attraction member displacement device for displacing between the first magnetic attraction member and the attraction release position separated from the first magnetic attraction member;
Have
At the adsorption position, the first and second magnetic adsorption members are arranged such that their respective pole faces abut,
The second magnetic attraction member displacing device displaces the second magnetic attraction member at the attraction position in a direction in which the magnetic pole surface slides with respect to the magnetic pole surface of the first magnetic attraction member, and sets the second magnetic attraction member as the adsorption release position. You can do so.

  In the above door, it is required that the depressurizing panel also return to the depressurizing opening closed position when the door body is in the door opening closed position, but a pressure difference is applied to the front and back surfaces of the depressurizing panel, etc. There is a possibility that it may be prevented from returning to the open and closed position. In such a case, the magnetic attraction member displacement device makes it possible to return the decompression panel to the decompression opening closed position by the magnetic force. The second magnetic attraction member displacement device slides the pole face of the second magnetic attraction member against the pole face of the first magnetic attraction member when setting the second magnetic attraction member at the attraction position to the adsorption release position. By displacing in the direction, displacement from the first magnetic attraction member can be easily performed. Note that the first and second magnetically attracting members mean those which mutually cause an adsorptive action by magnetic force. For example, both of them may be permanent magnets, or one may be a permanent magnet and the other may be a magnetic material such as iron. be able to. When the permanent magnet and the magnetic material are in a magnetic attraction relationship, even a magnetic material that normally does not have a magnetic pole will have a magnetic pole.

  Specifically, the second magnetic attraction member displacing device interlocks the second magnetic attraction member with the handle shaft rotated via the handle, between the attraction position and the adsorption release position. It can be made to displace.

  Further, the door body latch bolt and the decompression panel latch bolt are displaced from the door locking position to the door unlocking position synchronously with the handle shaft which is rotated via the handle. The door body latch bolt is displaced from the panel lock position to the panel unlock position, and the door body latch bolt is brought into the door unlock position after the pressure reduction panel latch bolt becomes the panel unlock position. And the second magnetic adsorption member is displaced between the adsorption release position and the adsorption position in synchronization with the panel unlocking position and the panel locking position of the decompression bolt for the panel. be able to.

Further, the second adsorption member is made to face the decompression opening opening position from the decompression opening closing position of the decompression panel at the adsorption position,
The first adsorption member may face the pressure reducing panel closing position when the pressure reducing panel is in the pressure reducing panel open position.

  Further, the pressure reducing panel latch bolt and the second magnetic attraction member are disposed vertically separated in the door main body, and the panel unlocking position and the panel locking position, the attraction releasing position, and the adsorption, respectively. It can be made to be displaced in a horizontal direction synchronously with the position.

In the present invention,
Pivotable about a first axis extending vertically along one of the side edges, and displaceable between a door opening closing position closing the door opening and a door opening opening position opening the door opening The main body of the door,
A pressure reducing panel provided in a pressure reducing opening provided so as to penetrate from the front surface to the back surface of the door body, the first side edge closer to the one side edge of the door body, and the door And a second side edge close to the other side edge of the body, pivotable about a second axis extending perpendicularly between the first side edge and the second side edge, and depressurized A decompression panel which is mounted displaceably between the opening closure position and the decompression opening opening position;
A door latch device mounted within the door body adjacent to the other side edge of the door body, the door latch device being horizontally extended so as to penetrate the door body from the front side to the back side, A handle shaft rotatable about an axis, a handle fixed to the handle shaft, and an interlock with the handle shaft rotated via the handle when the door body is in the door opening closed position A door locking position fitted in a door locking hole provided on a door opening side edge which protrudes outward from the other side edge of the main body to define the door opening; And a door latch device having a door body latch bolt that is displaceable between a retracted door unlocking position and a door latch device having a depressurizing panel latch mounted on the door,
In a panel locking hole provided in the door body and provided at the side edge of the depressurizing panel in conjunction with the rotation of the handle shaft when the depressurizing panel is in the depressurizing opening closed position. A depressurizing panel latch device having a depressurizing panel latch bolt which is displaceable between a fitted panel locking position and a panel unlocking position pulled back from the panel locking hole.

  The depressurizing panel latch device is prepared as an element constituting a door provided with the depressurizing panel described above, and is adapted to be attached to the door main body as needed.

In particular,
A support disposed within the door body adjacent to the door latch device;
The decompression panel latch bolt may be supported by the support and be displaceable between the panel locking position and the panel unlocking position.

  In this case, the support supports a lever that pivots with the rotation of the handle shaft, the lever pivots in conjunction with the rotation of the handle, and the pressure reducing panel latch bolt is used as the panel. It can be made to displace between a locking position and the panel unlocking position.

Alternatively, the pressure reducing panel latch device
A first support provided in the door body adjacent to the door latch device, the first support supporting the lever pivoting with rotation of the handle shaft;
A second support provided in the door body adjacent to an opening side edge defining the depressurization opening, the depressurizing panel latch bolt being in the panel locking position and the panel unlocking position; Between the lever and the latch bolt for the decompression panel, and the latch bolt for the decompression panel is linked to the panel locking position and the panel in conjunction with the rotation of the handle. Connecting means displaced between the unlocking position;
Can also be provided.

Also, the panel latch device for pressure reduction is
And a pivoting member fixed to the handle shaft and extending parallel to the front and back surfaces of the door body away from the handle shaft,
The rotation of the handle is transmitted to the lever through the pivoting member to pivot the lever so as to displace the pressure reducing panel latch bolt between the panel locking position and the panel unlocking position. can do.

The panel latch device for pressure reduction is
It further comprises a magnetic adsorption device for magnetically attracting the pressure reducing panel located on the pressure reducing opening open position side with respect to the pressure reducing opening closed position to the pressure reducing opening closed position,
The magnetic adsorption device comprises: a magnetic adsorption member supported by a support;
The magnetic attraction member is pulled away from the magnetic attraction member of the pressure reduction panel in the pressure reduction opening closed position and in the suction position where the magnetic adsorption member is in contact with the magnetic suction member of the pressure reduction panel in the pressure reduction opening closed position. A magnetic attraction member displacing device displaced between the first and second attraction release positions;
Have
In the suction position, the magnetic attraction member of the magnet-type attraction device has its magnetic pole surface in contact with the magnetic attraction member of the pressure reducing panel;
The magnetic attraction member displacing device displaces the magnetic attraction member at the attraction position in a direction in which the magnetic pole surface slides against the magnetic pole surface of the magnetic attraction member of the pressure reduction adsorption panel, You can do it.

  The magnetic attraction member displacement device displaces the magnetic attraction member of the magnet type attraction device between the attraction position and the attraction release position in conjunction with the handle shaft rotated via the handle. can do.

  Further, the magnetic attraction member of the magnetic attraction device is displaced between the attraction release position and the attraction position in synchronization with the panel unlocking position and the panel locking position of the pressure reducing panel latch bolt. You can do so.

  Furthermore, the adsorption member of the magnetic adsorption device can face the decompression opening opening position from the decompression opening closing position of the decompression panel at the adsorption position.

  The latch bolt for the decompression panel and the magnetic attraction member of the magnet type adsorption device are disposed vertically separated in the support, and the panel unlocking position and the panel locking position, the adsorption unlocking position and the adsorption, respectively. It can be made to be displaced in a horizontal direction synchronously with the position.

  Hereinafter, an embodiment of a door provided with an openable / closable decompression opening according to the present invention will be described based on the attached drawings.

It is a front view of the door which concerns on this invention, and has shown the example used as a normally-closed fire door. It is a schematic diagram for showing the opening and closing operation of the normally closed fire door of Drawing 1, and the opening and closing operation of the decompression panel provided in the same door. It is a figure which shows the latch apparatus for pressure reduction panels integrated in the normally closed fire door of FIG. 1, and shows the state which the latch bolt for pressure reduction panels and a magnetic attraction member are engaging with the pressure reduction panel. FIG. 6 is a view similar to FIG. 3, in which the pressure reducing panel latch bolt and the magnetic attraction member are pulled out from the pressure reducing panel by turning the handle, and the door body latch bolt is directed from the door locking position to the door unlocking position Show a slightly moved condition. FIG. 5 is a view similar to FIG. 4, showing that the handle is further pivoted to bring the door body latch bolt into the door unlocked position. It is a figure which shows the state of a magnet type adsorption device in the same state as FIG.4 and FIG.5. It is a figure which shows the state of a magnet type adsorption device when the panel for pressure reduction rotates with respect to a door main body from the state of FIG. 6, and the opening for pressure reduction is open | released. It is a figure which shows the state by which the magnetic adsorption | suction member for adsorbing the magnetic adsorption member of the panel for pressure reduction in the state of FIG. 7 was displaced to the adsorption position. It is a figure which shows the state which the magnetic attraction members of a magnet type adsorption device mutually adsorb | sucked, and the panel for pressure reduction became the opening opening closed position for pressure reduction. FIG. 6 is a view showing another embodiment of the latch device incorporated in the door according to the present invention. FIG. 6 is a view similar to FIG. 1 showing yet another embodiment of a door according to the invention.

  The door 10 according to the present invention used as the normally closed fire door shown in FIG. 1 is, for example, a door opening (passage opening) 12 provided between a room on the paper front side and a corridor on the paper back side. Is set to close. The door 10 is pivotable about a first axis 16 which extends vertically along the right side edge 14 in the figure and is vertical in the same view as the horizontal door opening closed position in FIG. A door main body 18 displaceable between the door opening position and the pressure reducing panel 22 provided in a pressure reducing opening 20 provided to penetrate from the front surface to the back surface of the door main body 18; Have. The depressurizing panel 22 is pivotable about a second axis 24 extending vertically between the left and right first side edges 22a and the second side edges 22b, and as shown in FIG. And the opening position for depressurization. Although details will be omitted, the door body 18 provided with a closer with a hinge along the first axis 16 and pivoted from the door opening closing position to the door opening opening position is in the door opening closing position. It is intended to be biased towards. The depressurizing panel 22 is also provided with closer hinges at the upper and lower ends along the second axis 24, and is urged in the direction from the depressurizing opening opening position toward the depressurizing opening closing position. ing. Also, both the door body 18 and the depressurizing panel 22 are hollow with iron plates on the front and back sides, and when the depressurizing panel 22 is in the depressurizing opening closed position shown in FIG. The front and back surfaces of the pressure reducing panel 22 are made to be flush with each other.

  Inside the door body 18, a door latch device 26 is provided adjacent to the left side edge 12a. The door latch device 26 is provided at the side edge of the door opening 12 by pivoting the handle 30 attached to the end of a handle shaft 28 (FIG. 2) extending horizontally through the door body 18 from the front surface to the back surface. There is a door body latch bolt 32 which is fitted and released in a door locking hole (not shown). Since various functional connection relationships between the handle 30 and the door body latch bolt 32 are well known, the detailed description thereof is omitted in this embodiment. In FIG. 2, although the depressurizing panel 22 pivots, the left side portion of the second axis 24 of the depressurizing panel 22 protrudes downward with respect to the door 20. The right portion of the second axis 24 may project downward with respect to the door 20. In that case, there is an advantage that the person who turns the handle 30 can easily open the door 10.

  In FIGS. 3 to 5, the depressurizing panel 22 is provided in the door body 18 of the door 10 shown in FIG. 1 and interlocked with the handle shaft 28 which is turned by the turning operation of the handle 30. A pressure reducing panel latch 34 is shown for locking and unlocking 18. The pressure reducing panel latch device 34 has a flat case-like support 36 and a swing that is fixed to the handle shaft 28 and extends parallel to the front and back surfaces of the door main body 18 away from the handle shaft 28 When the member 38 and the depressurizing panel 22 are in the depressurizing opening closed position, they are provided on the second side edge 22b of the depressurizing panel 22 in conjunction with the swinging of the swinging member 38 about the handle shaft 28. Decompression panel latch that can be displaced between the panel locking position (FIG. 3) fitted in the panel locking hole 40 and the panel unlocking position (FIG. 5) pulled back from the panel locking hole 40 In the illustrated embodiment, a magnet type adsorption for attracting the pressure reducing panel 22 closer to the pressure reducing opening open position side than the pressure reducing opening closed position to the pressure reducing opening closed position by a magnetic force. Dress It has a 44.

  In this embodiment, the pivoting member 38 comprises a pair of pivoting members 38 mounted near the ends of the handle shaft 28 and extending parallel to each other along the front and back surfaces of the support 36. As shown in the figure, the swinging member 38 is provided with an arc-shaped guide hole 46 near the handle shaft 28 and is used to attach the handle shaft 28 to the door body 18. And is adapted to pivot about the handle axis 28 along this fixed axis 48. Further, between the pair of swinging members 38, first and second connecting shafts 50, 52 extending through arc-shaped guide holes 36a, 36b provided in the support 36 are the lengths of the swinging members 38. It is provided in the direction middle and the tip. The other end of the torsion spring 54, one end of which is fixed to the support 36, is engaged with the first connecting shaft 50, and biases the swinging member 38 in the counterclockwise direction toward the latch operating position shown in FIG. It is done. The second connecting shaft 52 is engaged with the bifurcated lever 56 pivotally mounted on the support 36 and urged clockwise by the torsion spring 55, and the bifurcated bifurcated member 38 when the swinging member 38 is rotated. The lever 56 is pivoted to operate the decompression panel latch 42 and the magnetic attraction member (permanent magnet in the illustrated example) 58 of the magnetic attraction device 44.

  Like the general-purpose door latch bolt, the pressure-reduction panel latch bolt 42 has a tapered surface in which one surface in the opening / closing direction of the pressure-reduction panel 22 is inclined and the other surface is flat. The panel 22 is allowed to return from the depressurizing opening position to the depressurizing opening closed position, but the reverse movement is prevented. The decompression panel latch bolt 42 is biased to a panel locking position shown in FIG. 3 by a spring (not shown), and pivoting the handle 30 pivots the pivoting member 38 clockwise, thereby the bifurcated lever The first engaging portion 60 provided at the middle portion of one lever 56a of the bifurcated lever 56 displaces the latch bolt support 62 of the latch bolt 42 for pressure reduction panel to the left side by rotating the 56 in the counterclockwise direction. The decompression panel latch bolt 42 is extracted from the panel locking hole 40 of the decompression panel 22 of FIG. 3 so as to be at the panel unlocking position shown in FIG.

In the present embodiment, the rocking member 38 is rockable from the position of FIG. 3 to the position of FIG. When the swing member 38 is in the position shown in FIG. 4, the pressure reducing panel latch bolt 42 is at the panel unlocking position, the magnetic attraction member 58 is at the suction releasing position, but the door body latch bolt 32 is at the door locking position. . That is, when the handle 30 is turned from the normal position to a certain extent at the time of the fire and the state shown in FIG. 4 is made, the door body 18 is locked at the door opening closed position by the door body latch bolt 32. The decompression panel latch bolt 42 is at the panel release position, the magnetic attraction member 58 is at the adsorption release position, and the decompression panel 22 can be pivoted relative to the door main body. Therefore, pressure is applied to the door 10 as shown by the arrow in FIG. 2 in this state, and the rotational force by the pressure is clockwise as viewed in FIG. 2 by the closer hinge device of the decompression panel 22 described above. If it becomes larger than the biasing force, in the state of FIG. 4, the depressurizing panel 22 is pivoted toward the depressurizing opening open position, and the opening operation of the door body 18 thereafter is performed. It will be easy to do. In the illustrated embodiment, the axis 24 for pivoting the depressurizing panel 22 is at a substantially central position in the width direction of the depressurizing panel 22 so that the rotational force due to the pressure described above is substantially not generated. However, if the door body is pivoted toward the door open position (when pivoted clockwise as viewed in FIG. 2) under the pressure as described above, the inertia and pressure of the decompression panel 22 Thus, the pressure reducing opening 20 is opened by pivoting counterclockwise with respect to the door body 18. When the pivoting member 38 is displaced to the position shown in FIG. 5, the door body latch bolt 32 is also in the door unlocking position, and the door body 18 can be moved toward the door open position.

The magnet-type adsorption device 44 includes a magnetic adsorption member 58, a magnetic adsorption member support member 66 that supports the magnetic adsorption member 58 movably in the horizontal direction with respect to the support 36, an adsorption position shown in FIG. And a magnetic attraction member displacing device for displacing between the attraction release position shown. In the illustrated example, the magnetic attraction member displacing device is composed of the swinging member 38 and the bifurcated lever 56 which is pivoted as described above by the handle 30, and the tip of the bifurcated lever 56 along with the pivoting of the bifurcated lever 56. The magnetic attraction member support member 66 is displaced between the attraction position and the attraction release position via the second engaging portion 61 provided in As shown in FIGS. 6 to 9, the magnet type adsorption device 44 includes a magnetic adsorption member 67 provided on the second side edge 22b of the pressure reduction panel 22. The magnetic adsorption member 67 is for pressure reduction. When the panel 22 is in the pressure reduction opening closed position and the magnetic attraction member 58 is in the attraction position (FIGS. 3 and 9), the magnetic attraction member 58 is magnetically attracted.

  FIG. 6 shows the door 10 when the magnet type adsorption device 44 is in the state shown in FIG. That is, the magnetic attraction member 58 is in the attraction release position, and is in a state of being separated from the magnetic attraction member 67 provided on the depressurizing panel 22. At this time, the decompression panel latch bolt 42 is also synchronously pulled out from the panel locking hole 40, and the decompression panel 22 becomes the decompression opening opening position (FIG. 7) from the decompression opening closing position (FIG. 6). Is possible. FIG. 8 shows a state in which the handle 30 is returned to the normal position and the magnetic attraction member 58 is returned to the attraction position after the decompression panel 22 is in the decompression opening open position shown in FIG. In this state, the magnetic attraction member 58 faces the magnetic attraction member 67 provided on the depressurizing panel 22 and produces an action of adsorbing the magnetic attraction member 67.

  FIG. 9 shows a state where the magnetic attraction members 58 and 67 are magnetically attracted to each other, and at this time, the pressure reducing panel latch bolt 42 is fitted in the panel locking hole 40 as shown in FIG. It has become. At this time, the magnetic attraction members 58 and 67 are abutted and attracted to each other by magnetic pole faces of mutually different polarities, but when the handle 30 is turned in this state, as shown in FIGS. 4 and 5, The decompression panel latch bolt 42 is displaced to the panel unlocking position, and the magnetic attraction member 58 is displaced so as to slide on the magnetic pole surface of the magnetic attraction member 67 so as to be the adsorption release position. Such a movement of the magnetic attraction member 58 results in a movement in a direction to break the magnetic flux between the pole faces, and the magnetic attraction member 58 can be displaced with a much smaller force than when the pole faces are separated vertically. It becomes.

  FIG. 10 shows another embodiment of the latch device used for locking and unlocking the door body 20 and the depressurizing panel 22 used in the door according to the present invention. The latch device includes a door body latch bolt 32, a decompression panel latch bolt 42, a handle shaft 28, a handle 30, and a door body attached to a flat case-like support 70 fixed inside the door body 18. The compression spring 72 for urging the latch bolt 32 to the door locking position shown, the compression spring 74 for urging the decompression panel latch bolt 42 to the panel locking position shown, the door locking position extending radially from the handle shaft 28 And the decompression panel latch bolt 42 in the panel lock position, and the pivoting operation of the handle 30 against the compression springs 72 and 74 respectively unlocks the door and unlocks the panel And a rocking member 38 which is displaced to a position.

  FIG. 11 shows another embodiment of the door 10 according to the present invention provided with a door main body 18 and a pressure reducing panel 22 for opening and closing the pressure reducing opening 20 of the door main body 18 similarly to the one shown in FIG. It shows. This door 10 is provided with a door latch device 26 in the same manner as in FIG. 1, and the handle shaft 28 is turned by the turning operation of a handle (not shown) to operate the door body latch bolt 32. Since various operation mechanisms are widely known, the details will be omitted.

Although the door 10 shown in FIG. 11 has the pressure-reduction panel latch device 34 like the door shown in FIG. 1, its specific configuration is as follows. That is, the pressure-reduction panel latch device 34 is a flat case-shaped first support 36 (1) provided in the door main body 18 adjacent to the door latch device 26, and the handle shaft 28 The first support 36 (1) for supporting the bifurcated lever 56 that swings with the rotation of the fixed swinging member 38, and the side edge of the decompression opening 20 (the lower side in the illustrated example) A second support 36 (2) formed in a flat case shape and provided in the door main body 18 adjacent to the rim, the second support 36 (2) supporting the decompression panel latch bolt 42; ), The fork lever 56 and the pressure reducing panel latch bolt 42 are connected, and the pressure reducing panel latch bolt 42 is pulled down from the position (shown) and the panel locking position (shown) in conjunction with the rotation of the handle 30 ) Panel unlocking position and And a connecting means 80 to displace between. In the illustrated example, one end of the connecting means 80 is connected to one end of the bifurcated lever 56, and the other end is connected to one end of the bifurcated lever 82 pivotally mounted on the second support 36 (2). When the handle 30 is pivoted and the handle shaft 28 is pivoted, the bifurcated lever 82 is engaged via the bifurcated lever 56 and the cable 80. Is rocked, thereby displacing the decompression panel latch bolt 42, which is normally biased to the panel locking position by the coil spring 86, between the panel locking position and the panel unlocking position.

  The door according to the present invention and the pressure reduction panel latch device used therein are as described above, and in any embodiment, the handle in any of the embodiments for bringing the door 10 in the door opening closed position to the door opening opening position The door 30 can be opened via the handle 30 with the door body latch bolt 32 and the decompression panel latch bolt 42 at their respective unlock positions by pivoting 30. At this time, even if the depressurizing panel 22 is pivoted to open the depressurizing opening 20, since the handle 30 is on the door main body 18 side, with such a pivoting position of the depressurizing panel 22 It becomes possible to hold the handle 30 regardless of the rotation operation of the door 10. In addition, even when the door body 18 is in the door opening closed position, there is a possibility that the strong air flow may prevent the pressure reducing panel 22 from completely returning to the pressure reducing opening closed position. In the invention, such a problem can be solved by the magnetic adsorption device 44.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these. For example, the door according to the present invention is not necessarily limited to a fire door, and application to a normally open fire door is also possible instead of the normally closed fire door as described above.

Door 10
Door opening 12
One side edge 14
First axis 16
Door body 18
Pressure reduction opening 20
Pressure reduction panel 22
First side edge 22a
Second side edge 22b
Second axis 24
Door latch device 26
Handle shaft 28
Handle 30
Door body latch bolt 32
Decompression panel latch device 34
Support 36
Guide holes 36a, 36b
First support 36 (1)
Second support 36 (2)
Rocking member 38
Panel lock hole 40
Latch bolt 42 for decompression panel
Magnet type adsorption device 44
Guide hole 46
Fixed shaft 48
First connecting shaft 50
Second connecting shaft 52
Torsion spring 54
Torsion spring 55
Bifurcated lever 56
Lever 56a
Magnetic attraction member 58
First engagement portion 60
Second engagement portion 61
Latch bolt support 62
Magnetic attraction member 67
Magnetic attraction member support member 66
Latch device main body 70
Compression spring 72, 74
Connecting means (cable) 80
Bifurcated lever 82
Pulley 84
Biasing member (coil spring) 86

Claims (17)

A door body pivotable about a first axis extending vertically along one of the side edges, the door body being displaceable between the door opening closed position and the door opening opening position;
A pressure reducing panel provided in a pressure reducing opening provided so as to penetrate from the front surface to the back surface of the door body, the first side edge closer to the one side edge of the door body, and the door And a second side edge close to the other side edge of the body, pivotable about a second axis extending perpendicularly between the first side edge and the second side edge, and depressurized A decompression panel which is mounted displaceably between the opening closure position and the decompression opening opening position;
A door latch device mounted within the door body adjacent to the other side edge of the door body, the door latch device being horizontally extended so as to penetrate the door body from the front side to the back side, A handle shaft rotatable about an axis, a handle fixed to the handle shaft, and an interlock with the handle shaft rotated via the handle when the door body is in the door opening closed position A door locking position fitted in a door locking hole provided on a door opening side edge which protrudes outward from the other side edge of the door body to define the door opening; A door latch device having a door body latch bolt which is displaceable between a door unlocking position retracted into the door
A panel locking position fitted to a panel locking hole provided on a side edge of the depressurizing panel in conjunction with the rotation of the handle shaft when the depressurizing panel is in the depressurizing opening closed position; A pressure reduction panel latch bolt which is displaceable between a panel unlocking position pulled back from the panel locking hole and the panel locking position;
A door with an openable and closable decompression opening. And a pivoting member fixed to the handle shaft and extending parallel to the front and back surfaces of the door body away from the handle shaft,
The pressure reducing panel latch bolt is interlocked with the swinging movement of the swinging member about the handle shaft when the pressure reducing panel is in the pressure reducing opening closed position, and the panel locking position; The door according to claim 1, which is displaceable between an unlocking position. It further comprises a magnetic adsorption device for magnetically attracting the pressure reducing panel located on the pressure reducing opening open position side with respect to the pressure reducing opening closed position to the pressure reducing opening closed position,
The magnetic adsorption device comprises a first magnetic adsorption member provided at a second side edge of the pressure reducing panel;
A second magnetic attraction member supported by the door body;
An adsorption position where the second magnetic adsorption member is brought into contact with the first magnetic adsorption member of the decompression panel in the decompression opening closed position and an adsorption position of the decompression panel in the decompression opening closing position A second magnetic attraction member displacement device for displacing between the first magnetic attraction member and the attraction release position separated from the first magnetic attraction member;
Have
At the adsorption position, the first and second magnetic adsorption members are arranged such that their respective pole faces abut,
The second magnetic attraction member displacing device displaces the second magnetic attraction member at the attraction position in a direction in which the magnetic pole surface slides with respect to the magnetic pole surface of the first magnetic attraction member, and sets the second magnetic attraction member as the adsorption release position. The door according to claim 1 or claim 2.   The second magnetic attraction member displacing device is configured to displace the second magnetic attraction member between the attraction position and the attraction release position in conjunction with the handle shaft rotated via the handle. The door according to claim 3. The door body latch bolt and the decompression panel latch bolt are interlocked with and synchronized with the handle shaft rotated via the handle, from the door lock position to the door unlock position, from the panel lock position. The door body latch bolt is displaced toward the panel unlocking position such that the door body unlocking position is established after the pressure reducing panel latch bolt reaches the panel unlocking position.
The second magnetic attraction member is adapted to be displaced between the attraction release position and the attraction position in synchronization with the panel unlocking position and the panel locking position of the pressure reducing panel latch bolt. The door according to claim 3 or 4. The second adsorption member is adapted to face the pressure reduction opening position from the pressure reduction opening closed position of the pressure reduction panel at the suction position.
The door according to any one of claims 3 to 5, wherein the first adsorption member faces the pressure reducing panel closing position when the pressure reducing panel is in the pressure reducing panel open position. .   The pressure reducing panel latch bolt and the second magnetic attraction member are vertically separated in the door body, and the panel unlocking position and the panel locking position, the adsorption unlocking position, and the adsorption position, respectively. The door according to any one of claims 3 to 6, wherein the door is displaced horizontally in synchronization with each other. Pivotable about a first axis extending vertically along one of the side edges, and displaceable between a door opening closing position closing the door opening and a door opening opening position opening the door opening The main body of the door,
A pressure reducing panel provided in a pressure reducing opening provided so as to penetrate from the front surface to the back surface of the door body, the first side edge closer to the one side edge of the door body, and the door And a second side edge close to the other side edge of the body, pivotable about a second axis extending perpendicularly between the first side edge and the second side edge, and depressurized A decompression panel which is mounted displaceably between the opening closure position and the decompression opening opening position;
A door latch device mounted within the door body adjacent to the other side edge of the door body, the door latch device being horizontally extended so as to penetrate the door body from the front side to the back side, A handle shaft rotatable about an axis, a handle fixed to the handle shaft, and an interlock with the handle shaft rotated via the handle when the door body is in the door opening closed position A door locking position fitted in a door locking hole provided on a door opening side edge which protrudes outward from the other side edge of the main body to define the door opening; And a door latch device having a door body latch bolt that is displaceable between a retracted door unlocking position and a door latch device having a depressurizing panel latch mounted on the door,
In a panel locking hole provided in the door body and provided at the side edge of the depressurizing panel in conjunction with the rotation of the handle shaft when the depressurizing panel is in the depressurizing opening closed position. A depressurizing panel latch device having a depressurizing panel latch bolt displaceable between a fitted panel locking position and a panel unlocking position pulled back from the panel locking hole. A support disposed within the door body adjacent to the door latch device;
9. The pressure reducing panel latch device according to claim 8, wherein the pressure reducing panel latch bolt is supported by the support so as to be displaceable between the panel locking position and the panel unlocking position. The support supports a lever that pivots with the rotation of the handle shaft, the lever pivots in conjunction with the rotation of the handle, and the pressure reduction panel latch bolt is placed in the panel locked position. The panel latch device for decompression according to claim 9, wherein the panel latch device is displaced between the panel unlocking position. A first support provided in the door body adjacent to the door latch device, the first support supporting the lever pivoting with rotation of the handle shaft;
A second support provided in the door body adjacent to an opening side edge defining the depressurization opening, the depressurizing panel latch bolt being in the panel locking position and the panel unlocking position; Between the lever and the latch bolt for the decompression panel, and the latch bolt for the decompression panel is linked to the panel locking position and the panel in conjunction with the rotation of the handle. Connecting means displaced between the unlocking position;
The panel latch device for decompression according to claim 8, comprising And a pivoting member fixed to the handle shaft and extending parallel to the front and back surfaces of the door body away from the handle shaft,
The rotation of the handle is transmitted to the lever through the pivoting member to pivot the lever so as to displace the pressure reducing panel latch bolt between the panel locking position and the panel unlocking position. The panel latch device for pressure reduction according to claim 10 or 11, which is being performed. It further comprises a magnetic adsorption device for magnetically attracting the pressure reducing panel located on the pressure reducing opening open position side with respect to the pressure reducing opening closed position to the pressure reducing opening closed position,
The magnetic adsorption device comprises: a magnetic adsorption member supported by a support;
The magnetic attraction member is pulled away from the magnetic attraction member of the pressure reduction panel in the pressure reduction opening closed position and in the suction position where the magnetic adsorption member is in contact with the magnetic suction member of the pressure reduction panel in the pressure reduction opening closed position. A magnetic attraction member displacing device displaced between the first and second attraction release positions;
Have
In the suction position, the magnetic attraction member of the magnet-type attraction device has its magnetic pole surface in contact with the magnetic attraction member of the pressure reducing panel;
The magnetic attraction member displacing device displaces the magnetic attraction member at the attraction position in a direction in which the magnetic pole surface slides against the magnetic pole surface of the magnetic attraction member of the pressure reduction adsorption panel, The panel latch device for pressure reduction according to any one of claims 8 to 12.   The magnetic attraction member displacement device displaces the magnetic attraction member of the magnet type attraction device between the attraction position and the attraction release position in conjunction with the handle shaft rotated via the handle. The panel latch device for pressure reduction according to claim 13.   The magnetic attraction member of the magnet-type adsorption device is displaced between the adsorption release position and the adsorption position in synchronization with the panel unlocking position and the panel locking position of the pressure reducing panel latch bolt. The panel latch device for pressure reduction according to claim 13 or 14, which is being performed.   The magnetic adsorption member of the magnet type adsorption device is adapted to face the decompression opening opening position from the decompression opening closing position of the decompression panel at the adsorption position. The panel latch device for decompression according to Item. The latch bolt for the decompression panel and the magnetic attraction member of the magnet type adsorption device are disposed vertically separated in the support, and the panel unlocking position and the panel locking position, the adsorption unlocking position and the adsorption, respectively. The pressure reducing support according to any one of claims 13 to 16, which is adapted to be horizontally displaced in synchronization with the position.

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