KR102055867B1 - Door and panel latch apparatus for decompressing with openable and closable decompressing aperture - Google Patents

Abstract

[Problem] The opening and closing of a door having a pressure reducing opening that can be opened and closed is facilitated.
[Resolution] The door main body 10, the pressure reduction panel 22 which is attached so as to be displaceable between the pressure reducing opening closing position and the pressure reducing opening opening position, the door 30 by the rotation operation of the handle 30 and the handle. A door latch device 26 attached to the door body 10 and a swinging member fixed to the handle shaft 28, having a latch bolt 32 for the door body that is displaceable between the locking position and the door unlocking position. When the 38 and the pressure reducing panel 22 are in the opening for closing the pressure reducing position, the displacement can be made between the panel locking position and the panel unlocking position in conjunction with the swinging of the swinging member 38 around the handle shaft 28. A door having an opening and closing pressure reduction opening having a pressure reduction panel latch device attached to the door main body, the door having a pressure reduction panel latch bolt (42).

Description

DOOR AND PANEL LATCH APPARATUS FOR DECOMPRESSING WITH OPENABLE AND CLOSABLE DECOMPRESSING APERTURE}

The present invention relates to a door having an openable pressure reducing opening suitable for a fire door and the like and a pressure reducing panel latch device used for the door.

The fire door is normally open, normally open and closes the door opening (path opening) at the time of ignition, and is normally in a position to close the door opening, and is normally closed so that the door can be opened and evacuated at the time of ignition.

When the fire door is to be closed or opened at the time of ignition, the movement of the fire door may be hindered by the air pressure applied to the fire door, and various studies have been made to solve this problem. For example, Patent Document 1 discloses a normally closed fire door having a pressure reducing opening that can be opened and closed. By opening the pressure reduction opening, the fire door is made to eliminate the pressure difference generated on the front side and the rear side of the door and preventing the opening operation.

More specifically, the normally closed fire door disclosed in Patent Literature 1 is a door body capable of pivoting about a pivot axis extending vertically along one side edge (in the term in Patent Literature 1, the term “fire door” 5) ") and a pressure-reduced opening (opening part 6) formed in a recessed shape so as to extend from the other side edge toward the one side edge in the vertical direction of the other side edge of the door body; It is provided so that the opening for pressure_reduction | reduced_pressure may be closed, and it has a pressure reduction panel (movable body 10) which became pivotable about the pivot axis line extended in parallel with the said pivot axis line. In the state in which the door opening (path 3) is closed, the panel latch (latch 13) provided on the pressure reduction panel is fitted into the latch hole provided in the door body, and the panel for pressure reduction is closed. The door body latch (latch 12) similarly held in the pressure-reducing panel is fitted into the latch hole provided at the door opening side edge to maintain the door main body in a closed state. . At the time of ignition, by operating the handle (door knob 8) provided in the panel for pressure reduction, both the latch for the door main body and the panel latch are pulled out from the corresponding latch holes. The panel is opened by the difference in pressure applied to the front and back surfaces of the fire door, whereby the pressure difference is eliminated and the door main body is easily opened.

JP-A-7-259407

Thus, in the fire door disclosed by patent document 1, the latch apparatus which consists of a handle, a door main body latch, a panel latch, etc. is attached to the pressure reduction panel which pivots with respect to a door main body, and when it tries to open a door main body, The pressure reduction panel in which the latch device is provided is in an open state (that is, an angle is formed at an angle with respect to the door body). According to the description of Patent Literature 1, it is said that "in this state can evacuate to the outside by pushing the fire door (5)" (lowest row), the door body (fire door (5)) is opened In order to do this, the door main body is pushed by the door body instead of the pressure reducing panel or the handle provided therein.

An object of this invention is to make it easier to open the said door main body by providing a latch apparatus in a door main body.

That is, the present invention

A door body capable of pivoting about a first axis extending vertically along one side edge and displaceable between a door opening closed position and a door opening opening position;

It is a pressure reduction panel provided in the pressure reduction opening provided so that it may penetrate from the surface of this door main body to the back surface, and is located in the 1st side edge of the side of this door main body close to this side edge, and the other side edge of this door main body. It has a second side edge on the near side, and becomes pivotable about a second axis extending vertically between the first side edge and the second side edge, and the pressure reducing opening closed position and the pressure reducing opening are opened. A pressure reducing panel which is displaceably attached between positions,

A door latch device attached to the door main body adjacent to the other side edge of the door main body, and attached so as to extend horizontally in a direction penetrating the door main body from this surface to the rear surface, and rotate about its longitudinal axis. The other side of this door body in conjunction with the handle shaft which is enabled, the handle fixed to this handle shaft, and this handle shaft rotated through this handle when this door body is in this door opening closed position. The door locking position which protrudes outward from the edge and fits into the door locking hole provided in the door opening side edge which defines this door opening, and the door unlocking position attracted in this door main body. A door latch device having a latch bolt for a door body which is displaceable between

When this panel for pressure reduction is in this opening position for pressure reduction, the panel locking position which fits into the panel visibility hole provided in the side edge of this pressure reduction panel in conjunction with rotation of this handle shaft, and this panel correction hole Latch bolt for pressure-sensitive panel which is displaceable between panel release positions returned from

Provided is a door having an opening and closing that can be opened and closed.

Herein, the handle means a handle for latch operation of a type such as a knob or a lever.

In the door according to the present invention, by operating the handle of the door latch device provided in the door body, the latch bolt for the pressure reducing panel is displaced between the panel unlocking position and the panel locking position, and the latch bolt for the door main body is moved to the door unlocking position. And the door lock position, the door body latch bolt is inclined relative to the door body when the door body is displaced between the door opening closed position and the door opening opening position. This can be done with the handle regardless of the pressure reducing panel.

Specifically,

It further has a rocking member which is fixed to the handle shaft and extends away from the handle shaft parallel to the front and back surfaces of the door body,

The latch bolt for the pressure reducing panel is displaced between the panel locking position and the panel unlocking position in association with the swing of the swinging member about the handle axis when the pressure reducing panel is in the pressure reducing opening closing position. You can do that.

In this door,

It further has a magnetic adsorption device for adsorb | sucking this pressure reduction panel in this pressure reduction opening opening side by magnetic force rather than this pressure reduction opening closing position,

This magnetic adsorption device

A first magnetic adsorption member provided at the second side edge of the panel for pressure reduction;

A second magnetic attraction member supported by the door body,

An adsorption position for contacting and adsorbing the second magnetic adsorption member to the first self-adsorption member of the pressure reduction panel at the opening closing position for pressure reduction, and the product of the pressure reduction panel at the opening closing position for pressure reduction; 2nd magnetic adsorption member displacement apparatus which displaces with 1 adsorption | release adsorption | release position removed from the magnetic adsorption member

Has,

At this suction position, the first and second magnetic attraction members are in contact with each magnetic pole surface,

The second magnetic adsorption member displacement device can cause the second magnetic adsorption member at this suction position to be displaced in the direction in which the magnetic pole surface slides with respect to the magnetic pole surface of the first magnetic suction member to be the suction release position.

In the above door, the pressure reducing panel is also required to return to the pressure reducing opening closing position when the door body is in the door opening closing position, but it is required to return to the pressure reducing opening closing position by applying a differential pressure to the front and back surfaces of the pressure reducing panel. There is a risk of being interrupted. In such a case, the magnetic adsorption member displacement device makes it possible to return the pressure-sensitive panel to the pressure-reducing opening closed position by the magnetic force. The second magnetic attraction member displacement device is displaced in the direction in which the magnetic pole surface of the second magnetic attraction member slides with respect to the magnetic pole surface of the first magnetic attraction member when the second magnetic attraction member in the suction position is placed in the suction release position. In this case, the displacement from the first magnetic adsorption member can be easily performed. In addition, the first and second magnetic adsorption members mean that they adsorb to each other by a magnetic force. For example, both of them are permanent magnets, one is permanent magnets and the other is magnetic material such as iron. It is also possible. When the permanent magnet and the magnetic material are in a magnetic adsorption relationship, a magnetic material usually having a magnetic pole does not have a magnetic pole.

Specifically, the second magnetic attraction member displacement device can cause the second magnetic attraction member to be displaced between the suction position and the suction release position in association with the handle shaft rotated through the handle.

In addition, the latch bolt for the door body and the latch bolt for the pressure-sensitive panel are displaced from this door locking position to this door unlocking position in synchronism with and synchronous with the handle shaft rotated through the handle, and from this panel locking position to this panel. The door lock bolt is displaced to the unlocked position, but the latch bolt for the door body is set to the door unlocked position after the pressure-sensitive panel latch bolt is in this panel unlocked position. It is possible to cause displacement between this suction release position and this suction position in synchronization with the panel unlocking position and the panel locking position, respectively.

Moreover, this 2nd adsorption | suction member faces this pressure reduction opening opening position from this pressure reduction opening closing position of this pressure reduction panel in this suction position,

The first adsorption member can face the pressure reducing panel closed position when the pressure reducing panel is in the pressure reducing panel opening position.

In addition, the latch bolt for the pressure-sensitive panel and the second magnetic attraction member are disposed up and down apart in the door main body, and between the panel release position and the panel locking position, and the suction release position and the suction position, respectively. It can be synchronized in the horizontal direction.

In the present invention also

The door body which is pivotable about the 1st axis line extended vertically along one side edge, and is displaceable between the door opening closed position which closes a door opening, and the door opening opening position which opens this door opening. Wow,

It is a pressure reduction panel provided in the pressure reduction opening provided so that it may penetrate from the surface of this door main body to the back surface, and is located in the 1st side edge of the side of this door main body close to this side edge, and the other side edge of this door main body. It has a second side edge on the near side, and becomes pivotable about a second axis extending vertically between the first side edge and the second side edge, and the pressure reducing opening closed position and the pressure reducing opening are opened. A pressure reducing panel which is displaceably attached between positions,

A door latch device attached to the door main body adjacent to the other side edge of the door main body, and attached so as to extend horizontally in the direction penetrating the door main body from this surface to the rear surface, and rotate about its longitudinal axis. A handle shaft that is enabled, a handle fixed to the handle shaft, and the other side edge of this body in conjunction with this handle shaft rotated through this handle when the door body is in this door opening closed position. It is possible to displace between the door locking position that protrudes outward from the door and fits into the door locking hole provided in the door opening side edge defining the door opening, and the door unlocking position drawn into the door body. Door latch device with latch bolt for door body

A pressure reducing panel latch device attached to a door having:

When the panel for pressure reduction is installed in the door main body and the panel for pressure reduction is in the opening position for closing the pressure reduction, the panel locking position is fitted to the panel correction hole provided in the side edge of the panel for pressure reduction in conjunction with the rotation of the handle shaft. And a pressure-sensitive panel latch bolt having a pressure-sensitive panel latch bolt which is displaceable between the panel release positions returned from the panel-correcting hole.

This pressure reduction panel latch device is prepared as an element constituting the door having the pressure reduction panel described above, and is to be attached to the door body as necessary.

Specifically,

It has a support body installed adjacent to this door latch device and installed in this door main body,

The latch bolt for the pressure-sensitive panel is supported by this support and can be displaced between this panel locking position and this panel unlocking position.

In this case, this support supports a lever that swings in accordance with the rotation of the handle shaft, and the lever swings in conjunction with the rotation of the handle, and the latch bolt for the pressure-sensitive panel is disposed between the panel locking position and the panel unlocking position. Can be displaced at.

As another aspect, the pressure reduction panel latch device

A first support body adjacent to the door latch device and installed in the door body, the first support body supporting a lever that swings in accordance with the rotation of the handle shaft;

A second support provided in the door main body adjacent to the opening side edge defining the opening for decompression, and a second for displacing the decompression panel latch bolt between the panel locking position and the panel unlocking position. With support

A connecting means for connecting the lever and the latch panel for the pressure-sensitive panel in succession to displace the latch bolt for the pressure-sensitive panel between the panel locking position and the panel unlocking position in conjunction with the rotation of the handle.

It may be provided with.

The pressure reducing panel latch device

It further has a rocking member which is fixed to the handle shaft and extends away from the handle shaft parallel to the front and back surfaces of the door body,

The rotation of this handle is transmitted to this lever through this swinging member so that the lever swings, and the latch bolt for the pressure-sensitive panel can be displaced between this panel locking position and this panel unlocking position.

The pressure reduction panel latch device

It further has a magnetic adsorption device for adsorb | sucking this pressure reduction panel in this pressure reduction opening opening side by magnetic force rather than this pressure reduction opening closing position,

This magnetic adsorption device

A magnetic adsorption member supported by a support,

The magnetic adsorption member is separated from the adsorption position for contacting and adsorbing the magnetic adsorption member of the pressure reduction panel at the opening closing position for pressure reduction, and the magnetic adsorption member for the pressure reduction panel at the opening closing position for pressure reduction. Magnetic adsorption member displacement device for displacing between the set adsorption release positions

Has,

In this adsorption position, this magnetic adsorption member of this magnetic adsorption device has the magnetic pole surface of the magnetic adsorption member of this panel for pressure reduction,

The magnetic adsorption member displacement device can displace this magnetic adsorption member in this adsorption position in a direction in which the magnetic pole surface slides with respect to the magnetic pole surface of the magnetic adsorption member of the pressure reduction adsorption panel to be in this suction release position. .

This magnetic suction member displacement device can cause the magnetic suction member of the magnetic suction device to be displaced between this suction position and the suction release position in association with the handle shaft rotated through the handle.

Further, the magnetic adsorption member of the magnetic adsorption device can be displaced between the adsorption release position and the adsorption position in synchronization with the panel unlocking position and the panel locking position of the latch bolt for the pressure-sensitive panel, respectively.

Moreover, the adsorption member of this magnetic adsorption apparatus can face this pressure reduction opening opening position from this pressure reduction opening closing position of this pressure reduction panel in this adsorption position.

The latch bolt for the pressure-sensitive panel and the magnetic adsorption member of the magnetic adsorption device are disposed upside down in the support, and are synchronized between the panel unlocking position and the panel locking position, and the adsorption unlocking position and the adsorption position, respectively. It can be displaced in the horizontal direction.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the door provided with the opening and closing for pressure reduction which concerns on this invention is described based on an accompanying drawing.

1 is a front view of a door according to the present invention, showing an example used as a normally closed fire door.
FIG. 2 is a schematic diagram for illustrating an opening and closing operation of the normally closed fire door of FIG. 1 and an opening and closing operation of a pressure reducing panel installed in the door.
FIG. 3 is a view showing a latch device for a pressure reduction panel incorporated in the normally closed fire door of FIG. 1, wherein the latch bolt for the pressure reduction panel and the magnetic suction member are engaged with the pressure reduction panel.
FIG. 4 is the same view as FIG. 3, in which the latch bolt for the decompression panel and the self-adsorbing member are pulled out of the decompression panel by the rotational operation of the handle, and the latch bolt for the door body moves the door unlocking position from the door locking position. It shows the state moved slightly toward.
FIG. 5 is the same view as FIG. 4, and the handle is further rotated to show the latch bolt for the door body in the door unlocked position.
FIG. 6 is a diagram illustrating a state of the magnetic adsorption device when in the same state as in FIG. 4 or FIG. 5.
FIG. 7 is a view showing a state of the magnet adsorption device when the pressure reducing panel rotates with respect to the door body from the state of FIG. 6 and the pressure reducing opening is opened.
FIG. 8 is a view showing a state in which the magnetic adsorption member for adsorbing the magnetic adsorption member of the pressure reduction panel in the state of FIG. 7 is displaced to the adsorption position.
FIG. 9 is a diagram showing a state in which the magnetic adsorption members of the magnetic adsorption device are attracted to each other such that the pressure reduction panel is in the opening closing position for pressure reduction.
10 is a view showing another embodiment of the latch device incorporated in the door according to the present invention.
11 is the same view as in FIG. 1, showing another embodiment of a door according to the invention.

(Form to carry out invention)

The door 10 according to the present invention used as the normally closed fire door shown in FIG. 1 usually has a door opening (path opening) 12 provided between the room in front of the ground and the corridor behind the ground, for example. Is set to close. The door 10 is pivotable about a first axis 16 extending vertically along the side edge 14 on the right side, as seen in the figure, and the door opening closed position horizontally as seen in FIG. Pressure reducing panel 22 provided in the door main body 18, which is displaceable between the vertical position of the door opening opening, and in the pressure reducing opening 20 provided so as to penetrate from the surface of the door main body 18 to the back surface. Have The pressure reducing panel 22 can pivotally move about the second axis 24 extending vertically between the left and right first side edges 22a and the second side edges 22b, as shown in FIG. As described above, it is possible to displace between the pressure reducing opening closing position and the pressure reducing opening opening position. Although the details are omitted, a hinged device with a closure is provided along the first axis line 16, and the door body 18 pivoted from the door opening closed position to the door opening opening position is biased toward the door opening closing position. It is. In addition, the pressure reduction panel 22 is also provided with a hinge device with a closure at the upper and lower ends along the second axis line 24, and is biased in a direction from the pressure reducing opening position to the pressure reducing opening closing position. In addition, the door main body 18 and the pressure reduction panel 22 also have a hollow structure provided with iron plates on the front side and the back side, and the pressure reduction panel 22 is located at the closing position of the pressure reduction opening shown in FIG. In this case, the front and rear surfaces of the door main body 18 and the pressure reduction panel 22 are in line with each other.

The door latch device 26 is provided inside the door main body 18 adjacent to the side edge 12a of the left side. The door latch device 26 rotates the handle 30 attached to the end of the handle shaft 28 (FIG. 2) which penetrates the door body 18 from the surface to the back surface and extends horizontally, thereby opening the door opening 12. It has a latch bolt 32 for a door main body which is fitted to the door-correction hole (not shown) provided in the side edge of the door, and is released. Since the functional connection relationship between the handle 30 and the latch bolt 32 for a door main body is well known, the detailed description is abbreviate | omitted in this embodiment. In addition, although the pressure reduction panel 22 pivots and the left part of the 2nd axis line 24 of the pressure reduction panel 22 protrudes downward with respect to the door 20 in FIG. The right part of the second axis line 24 of the panel 22 may protrude downward with respect to the door 20. In this case, there is an advantage that a person who rotates the handle 30 easily opens the door 10.

3 to 5, the pressure reducing panel 22 is installed in the door body 18 of the door 10 shown in FIG. 1 and interlocks with the handle shaft 28 rotated by the rotation operation of the handle 30. ), A latch device 34 for a pressure reduction panel for locking and unlocking the door main body 18 is shown. The pressure reducing panel latch device 34 is fixed to the support body 36 formed in a flat case shape and the handle shaft 28 and extends away from the handle shaft 28 in parallel to the front and back surfaces of the door body 18. When the oscillating member 38 and the pressure reducing panel 22 are in the opening closing position for pressure reduction, the pressure reducing panel 22 is interlocked with the oscillation of the oscillating member 38 around the handle shaft 28. Between the panel locking position (FIG. 3) fitted to the panel locking hole 40 provided in the 2nd side edge 22b of this, and the panel unlocking position returned from the panel locking hole 40 (FIG. 5). The pressure reduction panel latch bolt 42 which is displaceable is provided, and in the example of illustration, the pressure reduction panel 22 located in this pressure reduction opening opening side rather than the pressure reduction opening closing position is moved to the pressure reduction opening closing position. Magnetic adsorption device 44 for adsorption by magnetic force Have.

In this embodiment, the swinging member 38 is constituted by a pair of swinging members 38 which are attached near both ends of the handle shaft 28 and extend parallel to each other along the front and back surfaces of the support body 36. As shown in the swing member 38, an arc-shaped guide hole 46 is provided in the vicinity of the handle shaft 28, and as long as the swing member 38 is used to attach the handle shaft 28 to the door body 18. One of the pair of fixed shafts 48 is received and rotates about the handle shaft 28 along this fixed shaft 48. In addition, between the pair of swinging members 38, the first and second connecting shafts 50, 52 extending through the arc-shaped guide holes 36a, 36b provided in the support 36 are the swinging members ( 38) is installed in the middle and the end of the longitudinal direction. The other end of the torsion spring 54 whose one end is fixed to the support body 36 is engaged with the first connecting shaft 50, and the swinging member 38 is turned counterclockwise toward the latch operating position shown in FIG. 3. Biasing. The second connecting shaft 52 is pivotally attached to the support body 36 and engaged with the two-prong lever 56 which is biased in the clockwise direction by the torsion spring 55, when the swinging member 38 is rotated. The two-prong lever 56 is pivoted so as to operate the pressure-sensitive panel latch 42 and the magnetic adsorption member (permanent magnet in the illustrated example) 58 of the magnetic adsorption device 44.

Like the general-purpose door latch bolt, the pressure-sensitive panel latch bolt 42 has an inclined surface on one side in the opening and closing direction of the pressure-sensitive panel 22, and the other surface has a flat end shape. The panel 22 is allowed to return to the pressure reducing opening closing position from the pressure reducing opening opening position, but the opposite motion is prevented. The pressure-sensitive panel latch bolt 42 is biased to the panel locking position shown in FIG. 3 by a spring (not shown), and rotates the swinging member 38 clockwise by rotating the handle 30. The two engagement levers 56 are rotated counterclockwise so that the first engagement portion 60 provided in the middle portion of the one lever 56a of the two engagement levers 56 latches the latch bolt 42 for the pressure-sensitive panel. The bolt support body 62 is displaced to the left, the pressure-sensitive panel latch bolt 42 is pulled out from the panel-correcting hole 40 of the pressure-sensitive panel 22 in FIG. 3 so as to be the panel unlocked position shown in FIG. 4. Doing.

In the present embodiment, the swinging member 38 can swing from the position in FIG. 3 to the position in FIG. 5. When the swinging member 38 is in the position shown in Fig. 4, the latch bolt 42 for the pressure-sensitive panel is in the panel release position, and the magnetic attraction member 58 is in the suction release position. It is in the visibility position. That is, when the handle 30 is rotated to some extent from the normal position at the time of ignition and brought into the state shown in FIG. 4, the door main body 18 is locked to the door opening closed position by the latch bolt 32 for the door main body. In the pressure-reducing panel 22, the pressure-sensitive panel latch bolt 42 is in the panel release position, and the magnetic attraction member 58 is in the adsorption release position. Therefore, in this state, the pressure as shown by the arrow in FIG. 2 is applied to the door 10, and the rotational force by the pressure is shown in FIG. 2 by the hinge apparatus with the closure of the said pressure reduction panel 22 mentioned above. In the case where it becomes larger than the bias force in the clockwise direction, in the state of FIG. 4, the pressure reducing panel 22 is pivoted toward the pressure reducing opening opening position, and the door opening operation of the door main body 18 thereafter is performed. It can be done easily. In the illustrated embodiment, the axis 24 for the pivoting movement of the pressure reduction panel 22 is at a substantially center position in the width direction of the pressure reduction panel 22 so that the rotational force due to the pressure as described above is hardly generated. However, when the door body is pivoted toward the door opening opening position (as shown in Fig. 2, in the clockwise direction) while the pressure is applied as described above, the inertia and dynamic pressure of the pressure reducing panel 22 As a result, the opening 20 for decompression is opened by pivoting in the counterclockwise direction with respect to the door main body 18. In the state where the swinging member 38 is displaced to the position shown in FIG. 5, the latch bolt 32 for the door body also becomes the door release position, and the door body 18 can be moved toward the door opening opening position. .

The magnet adsorption device 44 includes a magnetic adsorption member 58, a magnetic adsorption member support member 66 for movably supporting the magnetic adsorption member 58 in the horizontal direction with respect to the support body 36, and shown in FIG. A magnetic adsorption member displacement device for displacing between the suction position and the suction release position shown in FIG. 4 is provided. In the example of illustration, this magnetic adsorption-member displacement apparatus is comprised by the oscillation member 38 and the two lever lever 56 rotated as mentioned above by the handle 30, and the two lever lever 56 is rotated. The magnetic suction member support member 66 is displaced between the suction position and the suction release position via the second engagement portion 61 provided at the tip of the two lever lever 56. As shown in FIGS. 6 to 9, the magnetic adsorption device 44 includes a magnetic adsorption member 67 provided at the second side edge 22b of the pressure reduction panel 22. The member 67 is adapted to self-adsorb to the magnetic adsorption member 58 when the pressure reduction panel 22 is in the pressure-reducing opening closing position and the magnetic adsorption member 58 is at the adsorption position (FIGS. 3 and 9). It is.

FIG. 6 shows the door 10 when the magnetic adsorption device 44 is in the state shown in FIG. 4. That is, the magnetic adsorption member 58 is in the adsorption | release adsorption position, and is in the state removed from the magnetic adsorption member 67 provided in the pressure reduction panel 22. As shown in FIG. At this time, the latch bolt 42 for the pressure reduction panel is also pulled out from the panel correcting hole 40 in synchronism, and the pressure reduction panel 22 is opened in the pressure reduction opening position (Fig. 6) from the pressure reduction opening closing position (Fig. 6). 7) is made possible. FIG. 8 shows a state in which the handle 30 is returned to its original normal position after the pressure reducing panel 22 is in the pressure reducing opening opening position shown in FIG. 7, and the magnetic adsorption member 58 is returned to the suction position. . In this state, the magnetic adsorption member 58 faces the magnetic adsorption member 67 provided on the pressure reduction panel 22, and the effect | action which adsorb | sucks this magnetic adsorption member 67 arises.

9 shows a state in which the magnetic adsorption members 58 and 67 are self-adsorbed to each other. At this time, the latch bolt 42 for the pressure-sensitive panel is fitted into the panel correcting hole 40 as shown in FIG. It is in a true state. At this time, the magnetic adsorption members 58, 67 abut on each other on the magnetic pole surfaces of different polarities, but when the handle 30 is rotated in this state, as shown in Figs. The panel latch bolt 42 is displaced to the panel release position, and the magnetic attraction member 58 is displaced so as to slide with respect to the magnetic pole surface of the magnetic attraction member 67 to be in the suction release position. This movement of the magnetic adsorption member 58 becomes a movement in the direction of breaking the magnetic flux between the magnetic pole surfaces, so that the magnetic adsorption member 58 can be displaced with a significantly smaller force than when the magnetic pole surfaces are vertically removed. .

Fig. 10 shows another embodiment of a latch device used for locking and unlocking the door body 20 and the pressure reduction panel 22 used in the door according to the present invention. The latch device includes a latch bolt 32 for a door body, a latch bolt 42 for a pressure reducing panel, a handle shaft 28 and a handle attached to a support 70 formed in a flat case shape fixed inside the door body 18. 30, a compression spring 72 biasing the latch bolt 32 for the door body to the illustrated door locking position, a compression spring 74 biasing the latch bolt 42 for the pressure reducing panel to the illustrated panel locking position, It extends radially from the handle shaft 28, engages with the latch bolt 32 for the door body in the door locking position, and the latch bolt 42 for the pressure-sensitive panel in the panel locking position, and rotates the handle 30. And a swinging member 38 which resists the compression springs 72 and 74 and is displaced to the door unlocking position and the panel unlocking position, respectively.

In FIG. 11, the door which concerns on this invention is equipped with the door main body 18 and the pressure reduction panel 22 for opening / closing the pressure reduction opening 20 of this door main body 18 similarly to FIG. Another embodiment of (10) is shown. This door 10 is provided with the door latch device 26 similarly to FIG. 1, and rotates the handle shaft 28 by the rotation operation of the handle which is not shown in figure, and operates the latch bolt 32 for door main bodies. have. Since various kinds of the operation mechanism are widely known, the details are omitted.

Although the door 10 shown in FIG. 11 has the latch device 34 for pressure reduction panels similarly to the door shown in FIG. 1, the specific structure is as follows. That is, the latch device 34 for the pressure-sensitive panel is a first support body 36 (1) formed in a flat case shape provided in the door body 18 adjacent to the door latch device 26, and is provided on the handle shaft 28. The first support 36 (1) for supporting the two-pronged lever 56 that swings in accordance with the rotation of the rocking member 38 which is fixed, and the side edge of the opening 20 for pressure reduction (in the example shown in the lower A second support 36 (2) formed in a flat case shape adjacent to the side edge) and installed in the door body 18, and a second support 36 (2) supporting the latch bolt 42 for the pressure-sensitive panel. And the bifurcation lever 56 and the pressure reduction panel latch bolt 42 are connected to each other, and in conjunction with the rotation of the handle 30, the latch bolt 42 for pressure reduction panel is connected to the panel locking position (shown). It has a connecting means 80 for displacing between panel unlocking positions (pulled down than the position shown). In the example shown, the connecting means 80 has one end connected to one end of the two lever lever 56 and the other end connected to one end of the two lever lever 82 pivotally attached to the second support 36 (2). With the cable 80 connected and connected between these two lever levers 56 and 82 via pulleys 84 and 84, the handle 30 is rotated so that the handle shaft 28 is rotated. 56 and the cable 80, rock the two-prong lever 82, whereby the latch bolt 42 for the pressure-sensitive panel, which is usually biased to the panel locking position by the coil spring 86, the panel locking position And to displace between and the panel unlocking position.

The door according to the present invention and the latching device for the pressure-sensitive panel used therein are as described above, and in any embodiment, in order to make the door 10 in the door opening closed position to the door opening opening position, the handle 30 is used. The door can be opened through the handle 30 by turning the latch bolt 32 for the door main body and the latch bolt 42 for the pressure-sensitive panel to each unlocked position. At this time, even if the pressure reduction panel 22 is rotated and the pressure reduction opening 20 is opened, since the handle 30 is on the door main body 18 side, the rotational position of the pressure reduction panel 22 is maintained. It is possible to perform the rotation operation of the door 10 with the handle 30 irrespective of. In addition, even when the door main body 18 is in the door opening closing position, there is a possibility that a situation such as preventing the pressure reducing panel 22 from returning completely to the pressure reducing opening closing position by severe air flow may occur. In the present invention, the magnetic adsorption device 44 makes it possible to solve such a problem.

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 the fire door, but also to the normally open fire door as well as the normally closed fire door as described above.

10 door
12 door opening
14 side edges
16 first axis
18 door body
20 Pressure reducing opening
22 Pressure Reducing Panel
22a first side edge
22b second side edge
24 2nd axis
26 door latch device
28 Handle Shaft
30 handles
32 Latch Bolt for Door Body
34 Latch Unit for Pressure Reducing Panel
36 support
36a, 36b guide hole
36 (1) first support
36 (2) second support
38 rocking member
40 Panel Correction Holes
42 Latch Bolt for Pressure Reducing Panel
44 Magnetic adsorption device
46 guide hole
48 fixed shaft
50 first connecting shaft
52 2nd connecting shaft
54 torsion springs
55 torsion springs
56 two-prong lever
56a lever
58 magnetic adsorption member
60 1st engagement part
61 second engagement
62 latch bolt support
67 magnetic adsorption member
66 Self-Adsorption Member Support Member
70 Latch Unit Body
72, 74 compression spring
80 Connection means (cable)
82 two-prong lever
84 pulley
86 Bias Member (Coil Spring)

Claims (17)

A door body capable of pivoting about a first axis extending vertically along one side edge and displaceable between a door opening closed position and a door opening opening position;
It is a pressure reduction panel provided in the pressure reduction opening provided so that it penetrates from the surface of this door main body to the back surface, and is located in the 1st side edge of the side of this door main body close to this one side edge, and the other side edge of this door main body. It has a second side edge on the near side and can pivot about a second axis extending vertically between the first side edge and the second side edge, thereby opening the pressure reducing opening and opening the pressure reducing opening. A pressure reducing panel which is displaceably attached between positions,
A door latch device attached to the door main body adjacent to the other side edge of the door main body, and attached so as to extend horizontally in a direction penetrating the door main body from this surface to the rear surface, and rotate about its longitudinal axis. The other side of this door body in conjunction with the handle shaft which is enabled, the handle fixed to this handle shaft, and this handle shaft rotated through this handle when this door body is in this door opening closed position. It is possible to displace between the door locking position which protrudes outward from the edge and fits into the door locking hole provided in the door opening side edge which defines this door opening, and the door unlocking position attracted in this door main body. A door latch device having a latch bolt for a door body,
When this panel for pressure reduction is in this opening position for pressure reduction, the panel locking position which fits into the panel visibility hole provided in the side edge of this pressure reduction panel in conjunction with rotation of this handle shaft, and this panel correction hole Latch bolt for pressure-sensitive panel which is displaceable between panel release position returned from
A door having a pressure reducing opening that can be opened and closed. The method of claim 1,
It further has a rocking member which is fixed to the handle shaft and extends away from the handle shaft parallel to the front and back surfaces of the door body,
The latch bolt for the pressure reducing panel is displaced between the panel locking position and the panel unlocking position in association with the swing of the swinging member about the handle axis when the pressure reducing panel is in the pressure reducing opening closing position. The door characterized by the above-mentioned. The method according to claim 1 or 2,
It further has a magnet adsorption device for magnetically adsorb | sucking this pressure reduction panel in this pressure reduction opening opening position by this magnetic force rather than this pressure reduction opening closing position,
This magnetic adsorption device
A first magnetic adsorption member provided at the second side edge of the panel for pressure reduction;
A second magnetic attraction member supported by the door body,
The adsorption position which abuts and adsorb | sucks this 2nd self-adsorption member to this 1st self-adsorption member of this pressure reduction panel in this pressure reduction opening closed position, and the said pressure reduction panel in this pressure reduction opening closing position 2nd magnetic adsorption member displacement apparatus which displaces with the adsorption | release adsorption position separated from the 1st magnetic adsorption member
With
At this suction position, the first and second magnetic attraction members are in contact with each magnetic pole surface,
The second magnetic adsorption member displacement device is configured to displace the second magnetic adsorption member in this adsorption position in a direction in which the magnetic pole surface slides with respect to the magnetic pole surface of the first magnetic adsorption member to be in this suction release position. Door made. The door body which is pivotable about the 1st axis line extended vertically along one side edge, and is displaceable between the door opening closed position which closes a door opening, and the door opening opening position which opens this door opening. Wow,
It is a pressure reduction panel provided in the pressure reduction opening provided so that it penetrates from the surface of this door main body to the back surface, and is located in the 1st side edge of the side of this door main body close to this one side edge, and the other side edge of this door main body. It has a second side edge on the near side, and becomes pivotable about the 2nd axis extended vertically between this 1st side edge and this 2nd side edge, The pressure reducing opening closed position and the pressure reducing opening A pressure reducing panel which is displaceably attached between the open positions,
A door latch device attached to the door main body adjacent to the other side edge of the door main body, and attached so as to extend horizontally in a direction penetrating the door main body from this surface to the rear surface, and rotate about its longitudinal axis. The handle shaft which is enabled, the handle fixed to this handle shaft, and this other side edge of this body in conjunction with this handle shaft rotated through this handle when this door body is in this door opening closed position. It is possible to displace between the door locking position that protrudes from the outside and fits into the door locking hole provided in the door opening side edge defining the door opening, and the door unlocking position drawn in the door body. Door latch device with latch bolt for door body
A pressure reducing panel latch device attached to a door having:
When the panel for pressure reduction is installed in the door main body and the panel for pressure reduction is in the opening position for closing the pressure reduction, the panel locking position is fitted to the panel correction hole provided in the side edge of the panel for pressure reduction in conjunction with the rotation of the handle shaft. And a latch bolt for a pressure reducing panel which is displaceable between the panel unlocking position returned from the panel locking hole. The method of claim 4, wherein
It is provided adjacent to this door latch device, and has the support body installed in this door main body,
The pressure reducing panel latch bolt is supported by the support and is capable of being displaced between the panel locking position and the panel unlocking position. The method of claim 5,
The support supports a lever that swings along the rotation of the handle shaft, and the lever swings in conjunction with the rotation of the handle to displace the latch bolt for the pressure-sensitive panel between the panel locking position and the panel unlocking position. A panel latch device for pressure reduction, characterized in that. The method of claim 4, wherein
A first support body adjacent to the door latch device and installed in the door body, the first support body supporting a lever that swings in accordance with the rotation of the handle shaft;
A second support provided in the door main body adjacent to the opening side edge defining the opening for decompression, and a second for displacing the decompression panel latch bolt between the panel locking position and the panel unlocking position. With support
A connecting means for connecting the lever and the latch panel for the pressure-sensitive panel and displacing the latch bolt for the pressure-sensitive panel between the panel locking position and the panel unlocking position in association with the rotation of the handle.
Pressure reducing panel latch device characterized in that it comprises. The method according to claim 6 or 7,
It further has a rocking member which is fixed to the handle shaft and extends away from the handle shaft parallel to the front and back surfaces of the door body,
The rotation of the handle is transmitted to the lever through the swinging member so that the lever swings, and the latch bolt for the pressure-sensitive panel is displaced between the panel locking position and the panel unlocking position. Pressure-sensitive panel latch device. The method according to any one of claims 4 to 7,
It further has a magnet adsorption device for magnetically adsorb | sucking this pressure reduction panel in this pressure reduction opening opening position by this magnetic force rather than this pressure reduction opening closing position,
This magnetic adsorption device
A magnetic adsorption member supported by a support,
The magnetic adsorption member is detached from the magnetic adsorption member of the pressure reduction panel at the closing position for pressure reduction and the adsorption position for contacting and adsorbing the magnetic adsorption member of the pressure reduction panel at the opening closing position for pressure reduction. Magnetic suction member displacement device for displacing between suction release positions
With
In this adsorption position, this magnetic adsorption member of this magnetic adsorption device has the magnetic pole surface of the magnetic adsorption member of this panel for pressure reduction,
The magnetic adsorption member displacement device is configured to displace this magnetic adsorption member in this adsorption position in a direction in which the magnetic pole surface slides with respect to the magnetic pole surface of the magnetic adsorption member of the pressure reduction adsorption panel to be in this adsorption release position. A pressure reducing panel latch device. The method of claim 8,
It further has a magnet adsorption device for magnetically adsorb | sucking this pressure reduction panel in this pressure reduction opening opening position by this magnetic force rather than this pressure reduction opening closing position,
This magnetic adsorption device
A magnetic adsorption member supported by a support,
The magnetic adsorption member is detached from the magnetic adsorption member of the pressure reduction panel at the closing position for pressure reduction and the adsorption position for contacting and adsorbing the magnetic adsorption member of the pressure reduction panel at the opening closing position for pressure reduction. Magnetic suction member displacement device for displacing between suction release positions
With
In this adsorption position, this magnetic adsorption member of this magnetic adsorption device has the magnetic pole surface of the magnetic adsorption member of this panel for pressure reduction,
The magnetic adsorption member displacement device is configured to displace this magnetic adsorption member in this adsorption position in a direction in which the magnetic pole surface slides with respect to the magnetic pole surface of the magnetic adsorption member of the pressure reduction adsorption panel to be in this adsorption release position. A pressure reducing panel latch device. delete delete delete delete delete delete delete

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