TWI676732B - Door with switchable pressure reducing opening and panel for decompression - Google Patents

Abstract

[Problem] It is easy to open and close a door provided with a switchable decompression opening. [Solution] A door having a switchable decompression opening having a door body 10; a decompression door panel 22 installed to be displaceable between a decompression opening blocking position and a decompression opening opening position; a door latch The lock device 26 is mounted on the door body 10; the pressure-reducing door plate latch device is mounted on the door body; the door latch device 26 includes a door body latch bolt 32, and can be operated by turning the handle 30 and the handle Displacement between the door latch position and the door unlock position; the pressure reducing door panel latching device includes a pressure reducing door panel latch bolt 42, and the swing member 38 fixed to the handle shaft 28 and the pressure reducing door panel 22 are reduced in position. At the time of pressing the opening locking position, it can be shifted between the door panel lock position and the door panel unlock position in conjunction with the swing of the swing member 38 centered on the handle shaft 28.

Description

Door with openable decompression opening and decompression panel latching device

The present invention relates to a door provided with a switchable decompression opening suitable for a fire door and the like, and a decompression door latch device used for the door.

Fire doors are: normally open, usually open, closed door opening (passage opening) in case of fire; and normally closed, usually in the position to close the door opening, open this door in case of fire to evacuate.

When a fire door is to be locked or opened during a fire, its operation is hindered due to air pressure or the like applied to the fire door, and various designs have been made to solve this problem. For example, Patent Document 1 discloses a normally-closed fire door having an openable decompression opening. By opening the decompression opening of this fire door, the pressure difference which hinders the opening action generated on the front side and the back side of the door is eliminated.

More specifically, the normally-closed fire door disclosed in Patent Document 1 has a door body (the term "Fire Door 5" in Patent Document 1), which can be pivoted along a pivot axis extending vertically along one edge. A decompression opening (opening 6), a central portion in the vertical direction of the other side edge of the door body extending from the other side edge toward the one side edge; and a decompression door plate (movable body) 10) It is provided to close the pressure-reducing opening, and a pivot axis extending in parallel with the pivot axis may be used as a center to pivot. In a state where the door opening (passage 3) is closed, a door plate latch (latch 13) provided in the pressure reducing door panel is fitted into a latch hole provided in the door body, and the pressure reducing door panel is maintained in the locked state and Similarly, a latch for a door body (latch 12) provided in the pressure-reducing door panel is fitted into a latch hole provided in a side edge of the door opening, and the door body is maintained in a closed state. In the event of a fire, by operating the handle (door handle 8) provided on the decompression door panel, both the door body latch and the door panel latch will be pulled out from the corresponding latch holes. In this state, the decompression The door panel is opened by the pressure difference applied to the front and back of the fire door, so that the difference between the pressure disappears, and the door body is easy to open.

[Xizhi technical literature]

[Patent Literature]

[Patent Document 1] Japanese Unexamined Patent Publication No. 7-259407

As described above, in the fire door disclosed in Patent Document 1, a latch device including a handle, a latch for a door body, a latch for a door panel, and the like is mounted on a decompression door panel that moves relative to the axis of the door body. When opening, the decompression door panel with the latch device installed is brought into an open state (that is, a state at an oblique angle to the door body). According to the description in Patent Document 1, in this state, "the fire door 5 can be pushed to wait for evacuation to the outside" ([0024] at the bottom), in order to open the door body (fire door 5), it is not attached to the door body. The angle is reduced by a door panel or a handle provided on the door panel, and the door body is pushed and pushed.

The object of the present invention is to make the opening operation of the door body easier by providing the latch device on the door body.

That is, the present invention provides a door having a switchable opening for reducing pressure. The door has a door body that can be moved as a central axis along a first axis that extends vertically along one side edge, and can be closed at the door opening lock position and The door opening is shifted between the open positions; the pressure reducing door plate is provided in the pressure reducing opening that penetrates from the front to the back of the door body, and has a first position near the edge of the side of the door body. The side edge and the second side edge located close to the other side edge side of the door body can be moved by the central axis with a second axis extending vertically between the first side edge and the second side edge, and is moved by the central axis. It is installed to be displaceable between the decompression opening locking position and the decompression opening opening position; a door latch device, which is adjacent to the other side edge of the door body, is installed in the door body, and has a handle shaft for The door body is mounted so as to extend horizontally from the front to the back, and can be rotated around its axial direction; a handle is fixed to the handle shaft; and a latch bolt for the door body is attached to the door. When the body is in the locked position of the door opening, The handle shaft that rotates by hand is protruded from the other side edge of the door body to the outside, and is locked at a door lock position fitted with a door lock hole provided at a door opening side edge that defines the door opening, And the door unlocking position being pulled into the body of the door; and the latch bolt for the pressure reducing door panel, which can rotate with the handle shaft when the pressure reducing door panel is in the pressure reducing opening blocking position. The interlocking position is shifted between a door panel lock position fitted with a door panel lock hole provided on a side edge of the pressure reduction door panel and a door panel unlock position pulled back from the door panel lock hole. Here, the handle is a handle for latch operation in the form of a grip or a lever.

In the door of the present invention, by operating a handle of a door latch device provided in the door body, the pressure-reducing door plate latch bolt is shifted between the door plate unlock position and the door plate lock position, and the door body is moved. The latch bolt is used to shift between the door unlocked position and the door locked position, so the door body with the latch bolt for the door body in the door unlocked position is shifted between the door opening locked position and the door opening open position. In this case, it can be performed by a handle regardless of the pressure-reducing door panel inclined with respect to the door body.

Specifically, it further has a swinging member fixed to the handle shaft and extending away from the handle shaft in parallel with the front and back surfaces of the door body; the latch bolt for the pressure reducing door plate, and the pressure reducing door When the door panel is in the closed position for the decompression opening, it can be linked with the swing of the swing member centered on the handle shaft, and can be shifted between the door panel lock position and the door panel unlock position.

The door further has a magnet-type adsorption device for magnetically adsorbing the decompression door panel, which is positioned closer to the decompression opening opening position side than the decompression opening closing position, to the decompression magnetically. With the opening locked position, the magnet-type adsorption device includes: a first magnetic adsorption member provided on a second side edge of the pressure-reducing door panel; a second magnetic adsorption member supported by the door body; and a second magnetic adsorption member And a displacement device that places the second magnetic adsorption member in an adsorption position where the first magnetic adsorption member in contact with the first magnetic adsorption member of the decompression door panel located at the decompression opening blocking position is in contact with the decompression member. The opening-closing position is shifted between the adsorption release position where the first magnetic adsorption member of the decompression door panel is pulled open; at the adsorption position, the magnetic pole surfaces of the first and second magnetic adsorption members are in contact with each other; the The second magnetic adsorption member displacement device displaces the second magnetic adsorption member positioned at the adsorption position in a direction in which the magnetic pole surface thereof slides relative to the magnetic pole surface of the first magnetic adsorption member and is positioned at the adsorption release position.

In the above-mentioned door, when the door body is in the door opening blocking position, although the pressure reducing door panel is also required to return to the pressure reducing opening blocking position, a differential pressure is applied to the front and back surfaces of the pressure reducing door panel. There is a possibility of preventing the return to the closed position of the decompression opening. In this state, the magnetic attraction member displacement device can return the decompression door panel to the decompression opening lock position by magnetic force. When the second magnetic adsorption member displacement device positions the second magnetic adsorption member at the adsorption position to the adsorption release position, the magnetic pole surface of the second magnetic adsorption member is displaced in the sliding direction relative to the magnetic pole surface of the first magnetic adsorption member. On the other hand, displacement from the first magnetic adsorption member is facilitated. In addition, the first and second magnetic adsorption members mean that magnetic attraction is applied to each other. For example, both of them may use a permanent magnet, or one may use a permanent magnet and the other may use a magnetic material such as iron. When a permanent magnet and a magnetic material have a magnetic adsorption relationship, even a magnetic material that normally does not have a magnetic pole will have a magnetic pole.

Specifically, the second magnetic adsorption member displacement device interlocks the second magnetic adsorption member with the handle shaft that is rotated through the handle, and displaces between the adsorption position and the adsorption release position.

In addition, the latch bolt for the door body and the latch bolt for the pressure-reducing door plate are synchronized with the handle shaft rotated by the handle, and are simultaneously shifted from the door lock position to the door unlock position and locked from the door plate The position is shifted to the door panel unlocking position, but the door body latch bolt is after the pressure reducing door panel latch bolt reaches the door panel unlocking position to the door unlocking position, and the second magnetic adsorption member is on the pressure reducing door panel. The door plate unlocking position with the latch bolt and the door plate locking position are respectively shifted between the suction release position and the suction position.

Furthermore, the second adsorption member is located at the adsorption position from the decompression opening closing position of the decompression door panel to the decompression opening opening position, and the first adsorption member is located at the decompression door panel. When the decompression door panel is opened, it faces the decompression door panel lock position.

In addition, the pressure-reducing door plate latch bolt and the second magnetic suction member are separately arranged up and down in the door body, and are respectively synchronized between the door plate unlock position and the door plate lock position, the suction unlock position and the suction position. Shift horizontally.

According to the present invention, there is provided a door latch device for pressure reduction, which is installed on a door. The door has a door body that can be moved as a central axis along a first axis that extends vertically along one side edge. The closed position of the door opening with the opening closed is shifted from the open position of the door opening that opens the door opening; the pressure reducing door plate is provided in the pressure reducing opening provided through the front side to the back side of the door body, and has a position The first side edge near the side edge side of the door body and the second side edge near the other side edge side of the door body may be between the first side edge and the second side edge A second axis extending vertically is a central axis and is mounted to be displaceable between a decompression opening blocking position and a decompression opening opening position; and a door latch device abutting the other side of the door body The edge is installed in the door body, and has a handle shaft, which is installed to extend horizontally in a direction that penetrates the door body from the front to the back, and can be rotated around the axis direction; the handle is fixed to the door. On the handle shaft; and the latch bolt for the door body, in the When the door body is located at the door opening lock position, it can be linked with the handle shaft rotated through the handle to protrude from the other side edge of the door body to the outside, and on the side of the door opening provided to define the door opening The door lock position of the edge door lock fitting hole is shifted from the door unlock position pulled into the body of the door; the decompression door panel latch device has a decompression door panel latch bolt, and A latch bolt for a decompression door panel is provided in the door body. When the decompression door panel is located in the decompression opening blocking position, it can be linked with the rotation of the handle shaft. The lock position of the door panel fitted with the lock hole on the door panel on the side edge is shifted from the unlock position of the door panel pulled back from the lock hole on the door panel.

This pressure-reducing door panel latch device is prepared as an element constituting the said door provided with the pressure-reducing door panel, and can be mounted on a door body as needed.

Specifically, a support body is provided in the door body adjacent to the door latch device; the decompression door plate is supported by the support body with a latch bolt, and can be unlocked from the door plate in a locked position on the door plate Shift between positions.

At this time, the support body supports a lever that swings with the rotation of the handle shaft, and the lever swings in conjunction with the rotation of the handle, so that the latch bolt for the decompression door panel is locked at the door panel with the door panel. Shift between unlocked positions.

As another aspect, the decompression door latch device may include a first support body provided adjacent to the door latch device in the door body, and supporting a lever that swings as the handle shaft rotates; a second support body; A support body is provided in the door body adjacent to the side edge of the opening delimiting the decompression opening, and the decompression door plate is supported by a latch bolt so as to be displaceable between the door plate lock position and the door plate unlock position And a connecting means, connecting the lever with the decompression door panel with a latch bolt, and interlocking with the rotation of the handle, moving the decompression door panel latch bolt between the door panel lock position and the door panel unlock position Bit.

The decompression door latch device further includes a swinging member fixed to the handle shaft and extending away from the handle shaft in parallel with the front and back surfaces of the door body; the rotation of the handle passes through the swing The member is transmitted to the lever to swing the lever, and the latch bolt for the decompression door panel is displaced between the door panel lock position and the door panel unlock position.

The decompression door panel latch device further includes a magnet-type adsorption device for magnetically adsorbing the decompression door panel, which is positioned closer to the decompression opening opening position side than the decompression opening blocking position. To the decompression opening blocking position, the magnet-type adsorption device includes: a magnetic adsorption member supported by a support; and a magnetic adsorption member shifting device to place the magnetic adsorption member in the decompression opening blocking position. The magnetic adsorption member of the pressure reduction door plate abuts the adsorption adsorption position and the adsorption release position pulled away from the magnetic adsorption member of the pressure reduction door plate which is located at the pressure reduction opening blocking position; At the adsorption position, the magnetic pole surface of the magnetic adsorption member of the magnet type adsorption device will abut the magnetic adsorption member of the decompression door plate; and the magnetic adsorption member displacement device causes the magnetic adsorption member at the adsorption position. The magnetic pole surface slides in a direction in which the magnetic pole surface slides relative to the magnetic pole surface of the magnetic adsorption member of the decompression adsorption door panel, and reaches the adsorption release position.

The magnetic adsorption member displacement device interlocks the magnetic adsorption member of the magnetic adsorption device with the handle shaft that is rotated through the handle, and displaces between the adsorption position and the adsorption release position.

In addition, the magnetic adsorption member of the magnet-type adsorption device shifts between the adsorption release position and the adsorption position in the unlocked position of the door panel and the locked position of the door panel of the decompression door plate latch bolt, respectively.

Furthermore, the magnetic adsorption member of the magnet-type adsorption device faces the decompression opening opening position from the decompression opening blocking position of the decompression door panel at the adsorption position.

The latch bolt for the decompression door panel and the magnetic adsorption member of the magnet-type adsorption device are separated and arranged in the support body, and are synchronized between the door panel unlock position and the door panel lock position, the adsorption unlock position, and the adsorption position. Shift in the horizontal direction.

Hereinafter, an embodiment of the door provided with a switchable opening for pressure reduction according to the present invention will be described with reference to the drawings.

10‧‧‧ gate

12‧‧‧ door opening

14‧‧‧ side edge

16‧‧‧ 1st axis

18‧‧‧Door body

20‧‧‧ Decompression opening

22‧‧‧Decompression door panel

22a‧‧‧1st side edge

22b‧‧‧ 2nd side edge

24‧‧‧ 2nd axis

26‧‧‧Door latching device

28‧‧‧Handle shaft

30‧‧‧handle

32‧‧‧ latch bolt for door body

34‧‧‧ Latching device for pressure reducing door panel

36‧‧‧ support

36a, 36b‧‧‧ guide hole

36 (1) ‧‧‧The first support

36 (2) ‧‧‧Second support

38‧‧‧ swing member

40‧‧‧ Lock hole for door panel

42‧‧‧Latch bolt for decompression door panel

44‧‧‧Magnet type adsorption device

46‧‧‧ guide hole

48‧‧‧ fixed shaft

50‧‧‧ 1st connecting shaft

52‧‧‧ 2nd connecting shaft

54‧‧‧torsion spring

55‧‧‧ Torsion spring

56‧‧‧ divergence members

56a‧‧‧ lever

58‧‧‧Magnetic adsorption member

60‧‧‧The first engaging part

61‧‧‧The second engaging part

62‧‧‧latch bolt support

67‧‧‧Magnetic adsorption member

66‧‧‧Magnetic suction member support member

70‧‧‧ latch device body

72, 74‧‧‧ compression spring

80‧‧‧ Connection means (cable)

82‧‧‧ divergence member

84‧‧‧ pulley

86‧‧‧Energizing member (coil spring)

FIG. 1 is a front view of a door of the present invention, showing an example of use as a normally closed fire door.

FIG. 2 is a schematic diagram showing a switching operation of a normally closed fire door of FIG. 1 and a switching operation of a pressure reducing door panel provided on the door.

FIG. 3 is a view showing a latch device for a pressure reducing door panel assembled to the normally closed fire door of FIG. 1, and showing a state in which a latch bolt for a pressure reducing door panel and a magnetic attraction member are engaged with the pressure reducing door panel.

FIG. 4 is a view similar to FIG. 3, and shows that by the turning operation of the handle, the decompression door panel latch bolt and the magnetic attraction member are pulled out from the decompression door panel, and the door body latch bolt is directed from the door lock position The door unlock position moved slightly.

FIG. 5 is a view similar to FIG. 4, and shows a state where the handle is further rotated and the door body is positioned at the door unlock position with a latch bolt.

FIG. 6 is a view showing a state of the magnet type adsorption device in the same state as in FIGS. 4 and 5.

FIG. 7 is a diagram showing a state of the magnet type adsorption device when the decompression door panel is rotated relative to the door body from the state shown in FIG. 6 and the decompression opening is opened.

FIG. 8 is a diagram showing a state where the magnetic adsorption member for adsorbing the magnetic adsorption member of the pressure-reducing door panel in the state of FIG. 7 is shifted to the adsorption position.

FIG. 9 is a diagram showing a state in which the magnetic adsorption members of the magnet type adsorption device are attracted to each other and the decompression door plate is moved to the decompression opening closing position.

Fig. 10 is a view showing another embodiment of the latch device assembled on the door of the present invention.

FIG. 11 is a view similar to FIG. 1 and shows another embodiment of the door of the present invention.

The door 10 of the present invention used as a normally-closed fire door shown in FIG. 1 is set to normally close a door opening (passage opening) 12 provided between, for example, a room on the front side of the paper and a corridor on the back side of the paper as seen in the figure. . The door 10 can be pivoted about a first axis 16 that extends vertically along a side edge 14 on the right side as seen in the figure, and has a door body 18 that can be locked at the horizontal door opening position shown in FIG. 2 and in the same figure. The upper vertical door opening is shifted between open positions; and the pressure reducing door panel 22 is provided in the pressure reducing opening 20 provided to penetrate from the front surface to the rear surface of the door body 18. The decompression door panel 22 can be pivoted about a second axis 24 extending vertically between the left and right first side edges 22a and the second side edges 22b. As shown in FIG. 2, the decompression opening can be closed. Displacement between the position and the opening position of the decompression opening. Although the details are omitted, a hinge device with a closer is provided along the first axis 16. The door body 18 which is pivoted from the door opening closing position toward the door opening opening position is forcibly directed toward the door opening closing position. In addition, the decompression door panel 22 is also provided with a hinge device with a closer at the upper and lower ends along the second axis 24, and is forced to move from the decompression opening opening position to the decompression opening closing position. Both the door body 18 and the decompression door panel 22 have a hollow structure with iron plates on the front side and the back side. As shown in FIG. 1, the decompression door panel 22 is located at the decompression opening closing position. The front and back surfaces of the pressure reducing door panel 22 are on the same horizontal plane.

A door latch device 26 is provided inside the door body 18 adjacent to the left side edge 12a. This door latch device 26 includes a door body latch bolt 32, and a handle 30 provided on an end of a handle shaft 28 (FIG. 2) that extends through the door body 18 and extends horizontally from the front to the back, and is provided on the door. Door lock holes (not shown) on the side edges of the opening 12 are fitted or unfitted. There are many types of functional connection relationships between the handle 30 and the latch bolt 32 for the door body, and they are widely known. Therefore, detailed descriptions thereof are omitted in this embodiment. In addition, in FIG. 2, although the pressure reducing door panel 22 is pivoted and the left part of the second axis 24 of the pressure reducing door panel 22 projects downward from the door 20, the second axis 24 of the pressure reducing door panel 22 The part on the right side may project downward from the door 20. At this time, there is an advantage that it is easier for a person who rotates the operation handle 30 to open the door 10.

FIGS. 3 to 5 show a latching device 34 for a pressure reducing door panel, which is provided in the door body 18 of the door 10 shown in FIG. 1 and is linked to a handle shaft 28 which is rotated by a turning operation of the handle 30 to reduce the pressure. Pressure door The plate 22 locks or unlocks the door body 18. This decompression door panel latch device 34 includes a support body 36 formed in a flat box shape, and a swing member 38 fixed to the handle shaft 28 and extending away from the handle shaft 28 in parallel with the front and back surfaces of the door body 18. And the latch bolt 42 for the pressure reducing door plate, when the pressure reducing door plate 22 is in the pressure reducing opening blocking position, it can be linked with the swing of the swing member 38 centered on the handle shaft 28, and The door plate lock position (FIG. 3) fitted with the door plate lock hole 40 on the second side edge 22b of the door plate 22 is shifted from the door plate unlock position (FIG. 5) pulled back from the door plate lock hole 40; The embodiment shown in the figure further includes a magnet-type adsorption device 44 for magnetically attracting the decompression door panel 22 located closer to the decompression opening opening position side than the decompression opening closing position by magnetic force to decompression. Lock the position with the opening.

In this embodiment, the swing member 38 is composed of a pair of swing members 38 that are installed 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 figure, the swinging member 38 is provided with an arc-shaped guide hole 46 near the handle shaft 28, and receives one of a pair of fixed shafts 48 used to attach the handle shaft 28 to the door body 18, and The handle shaft 28 is rotated around the fixed shaft 48. Further, between the pair of swinging members 38, first and second connecting shafts 50 and 52 extending through arc-shaped guide holes 36a and 36b provided in the support body 36 are provided in the longitudinal direction of the swinging member 38. Middle and front. One end of the first connecting shaft 50 is engaged with the other end of the torsion spring 54 fixed to the support body 36, and the swing member 38 is biased as shown in FIG. 3 toward the latch operating position and counterclockwise. The second connecting shaft 52 is pivotally connected to the support body 36, and is engaged with the branch lever 56 which is biased in a clockwise direction by the torsion spring 55. When the swing member 38 rotates, the branch lever 56 pivots and causes The pressure-reducing door plate latch 42 and the magnetic attraction member (permanent magnet of the illustrated example) 58 of the magnet-type attraction device 44 operate.

The decompression door panel latch bolt 42 is the same as the general-purpose door latch bolt. One side of the opening and closing direction of the decompression door panel 22 is a slanted surface and the other side is a flat-shaped thin head. The opening-opening position returns to the pressure-reducing opening-locking position, but prevents its reverse movement. This decompression door plate latch bolt 42 is biased toward the door plate lock position shown in FIG. 3 by a spring (not shown), and the swing member 38 is rotated clockwise by turning the handle 30 to thereby diverge. The lever 56 rotates counterclockwise, and the first engaging portion 60 provided at the middle portion of one of the levers 56 a of the branch lever 56 displaces the latch bolt support 62 of the pressure reducing door panel latch bolt 42 to On the left side, the depressurization door plate latch bolt 42 is pulled out from the door plate lock hole 40 of the decompression door plate 22 of FIG. 3 and positioned at the door plate unlocking position shown in FIG. 4.

In this embodiment, the swinging member 38 is swingable from the position of FIG. 3 to the position of FIG. 5. When the swing member 38 is in the position shown in FIG. 4, the pressure-reducing door plate latch bolt 42 will be in the door unlock position, and the magnetic suction member 58 will be in the suction release position, but the door body latch bolt 32 will be in the door lock position. . That is, when the handle 30 is turned from a normal position to a state shown in FIG. 4 during a fire, the door body 18 is locked to the door opening lock position by the door body latch bolt 32, However, in the decompression door panel 22, the decompression door panel latch bolt 42 is in the door release position, and the magnetic suction member 58 is in the suction release position, and is in a state capable of being pivoted to the main body. Therefore, in this state, the door 10 is applied with the pressure shown by the arrow in FIG. 2, and the rotational force formed by the pressure is greater than the clockwise direction seen in FIG. 2 of the hinge device with a closer of the pressure reducing door panel 22 described above. When the potential is large, in the state shown in FIG. 4, the decompression door panel 22 is pivoted toward the decompression opening opening position, and thereafter, the door opening operation of the door body 18 becomes easy. In the illustrated embodiment, the axis 24 for pivoting the decompression door panel 22 is located at a substantially central position in the width direction of the decompression door panel 22, and the rotational force caused by the above-mentioned pressure is not substantially Occurs, but when the door body is pivoted toward the door opening position (in the clockwise direction as seen in FIG. 2) under the state of the aforementioned pressure, the inertia of the pressure reducing door panel 22 and the same pressure are applied to the door. The main body 18 is pivoted counterclockwise to open the decompression opening 20. In a state where the swing member 38 is shifted to the position shown in FIG. 5, the door body latch bolt 32 is also moved to the door unlock position, and the door body 18 can be moved toward the door opening open position.

The magnet-type adsorption device 44 includes a magnetic adsorption member 58, a magnetic adsorption member support member 66, which supports the magnetic adsorption member 58 so that it can move relative to the support body 36 in a horizontal direction, and a magnetic adsorption member shifting device, which The suction position shown in FIG. 3 and the suction release position shown in FIG. 4 are shifted. In the example shown in the figure, the magnetic adsorption member displacement device is composed of the swing member 38 and the branch lever 56 which are rotated by the handle 30 as described above. As the branch lever 56 rotates, The second engaging portion 61 at the front end of the lever 56 can displace the magnetic suction member support member 66 between the suction position and the suction release position. As shown in FIGS. 6 to 9, this magnet-type adsorption device 44 is provided with a magnetic adsorption member 67 provided on the second side edge 22 b of the decompression door panel 22. When the pressure opening is locked and the magnetic adsorption member 58 is positioned at the adsorption position (FIGS. 3 and 9), the magnetic adsorption member 58 is magnetically adsorbed.

FIG. 6 shows the door 10 when the magnet-type adsorption device 44 is in the state shown in FIG. 4. That is, the magnetic adsorption member 58 is located at the adsorption release position, and is in a state of being separated from the magnetic adsorption member 67 provided on the decompression door panel 22. At this time, the pressure-reducing door plate latch bolt 42 is also simultaneously pulled out from the door plate lock hole 40, The decompression door panel 22 can be changed from the decompression opening closing position (FIG. 6) to the decompression opening opening position (FIG. 7). FIG. 8 shows a state in which the handle 30 is returned to the normal position and the magnetic suction member 58 is returned to the suction position after the pressure reduction door panel 22 is changed to the pressure reduction opening opening position shown in FIG. 7. In this state, the magnetic adsorption member 58 faces the magnetic adsorption member 67 provided on the decompression door panel 22, and a role of adsorbing the magnetic adsorption member 67 is generated.

FIG. 9 shows a state in which the magnetic attraction members 58 and 67 are magnetically attracted to each other. At this time, as shown in FIG. 3, the pressure-reducing door plate latch bolt 42 is fitted into the door plate lock hole 40. At this time, the magnetic suction members 58 and 67 are attracted to each other by magnetic pole surfaces of different polarities, but in this state, if the handle 30 is rotated, as shown in FIGS. 4 and 5, the pressure-reducing door plate latches are locked. The bolt 42 is displaced to the door panel unlocking position, and the magnetic attraction member 58 is displaced to slide relative to the magnetic pole surface of the magnetic attraction member 67 to the adsorption release position. This operation of the magnetic attraction member 58 is an operation in the direction of cutting the magnetic fluxes between the magnetic pole faces, and the magnetic attraction member 58 can be displaced with a relatively small force compared to a case where it is vertically separated from the magnetic pole faces.

FIG. 10 shows another embodiment of a latch device used for locking and unlocking the door body 20 and the decompression door panel 22 used in the door of the present invention. This latch device includes a latch bolt 32 for a door body, a latch bolt 32 for a pressure reducing door panel, a handle shaft 28, a handle 30, and a door body, which are fixed to the door body 18 and form a flat box-shaped support body 70. A compression spring 72 biased by the latch bolt 32 to the locked position of the door shown in the figure, a compression spring 74 biased by the latch bolt 42 for the pressure reducing door panel to the locked position of the door shown in the figure, and a swing member 38, The shaft 28 extends in a radial direction, and is engaged with a latch bolt 32 for a door body located at a locked position of the door and a latch bolt 42 for a decompression door panel located at a locked position of the door panel, and resists compression by the rotation operation of the handle 30 The springs 72 and 74 are respectively shifted to the door unlocking position and the door panel unlocking position.

FIG. 11 is the same as that shown in FIG. 1 and shows another embodiment of the door 10 of the present invention. The door 10 is provided with a door body 18 and a switch for decompressing the opening 20 for decompressing the door body 18.门板 22。 Door plate 22. This door 10 is the same as the door of FIG. 1, and includes a door latch device 26. The door shaft 28 is rotated by turning a handle (not shown), and a latch bolt 32 for the door body is operated. There are many types of this operating mechanism and they are widely known, so the details are omitted.

The door 10 shown in FIG. 11 includes the pressure reducing door panel latch device 34 similarly to the door shown in FIG. 1, but the specific configuration is as follows. That is, the latch device 34 for a pressure-reducing door panel includes a first support body 36 (1), which is a first support body adjacent to the door latch device 26 and provided in the door body 18 to form a flat box shape. 36 (1), which supports the branch lever 56 that swings as the swing member 38 fixed to the handle shaft 28 rotates; the second support body 36 (2), which is adjacent to the side edge of the decompression opening 20 (shown in the figure) In the example, the lower side edge) is provided in the door body 18 and forms a flat box-shaped second support body 36 (2), which supports the pressure-reducing door plate latch bolt 42; and the connection means 80, which divides the branch lever 56 It is connected to the decompression door panel latch bolt 42 and is linked with the rotation of the handle 30, so that the decompression door panel latch bolt 42 is locked at the door panel (shown) and lowered (lower than the position shown in the figure) The door panel is shifted between unlocked positions. In the example shown in the figure, the connecting means 80 includes a cable 80, one end of which is connected to one end of the branch lever 56 and the other end is connected to one end of the branch lever 82 which is pivotally connected to the second support 36 (2). It is connected between the branch levers 56 and 82 through the pulleys 84 and 84. If the handle 30 rotates and the handle shaft 28 rotates, the lever 82 is swung through the branch levers 56 and the cable 80, thereby making the usual borrowing The pressure-reducing door plate latch bolt 42 biased to the door plate lock position by the coil spring 86 is displaced between the door plate lock position and the door plate unlock position.

As described above, the door of the present invention and the latch device for a pressure reducing door panel used therefor can be used to rotate the handle 30 in order to make the door 10 at the door opening locked position to the door opening open position. The latch bolt 32 for the door body and the latch bolt 42 for the pressure-reducing door panel are unlocked by the handle 30, and the door can be opened by the handle 30. At this time, even if the pressure-reducing door panel 22 is rotated to open the pressure-reducing opening 20, the handle 30 is located on the door body 18 side. Therefore, regardless of the rotation position of the pressure-reducing door panel 22, the handle 30 can be held The door 10 is rotated. In addition, even if the door body 18 is in the door opening blocking position, there may be a situation that the decompression door panel 22 is prevented from completely returning to the pressure reducing opening blocking position due to the intense air flow. However, in the present invention, This problem can be eliminated 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 of the present invention is not necessarily limited to a fire door, and is not limited to the normally closed fire door described above, and can also be applied to a normally open fire door.

Claims (10)

A door having a switchable pressure-reducing opening includes a door body that can be moved as a central axis along a first axis that extends vertically along one side edge, and can be between a door opening closed position and a door opening open position Displacement; the door for pressure reduction is provided in the opening for pressure reduction penetrating from the front side to the back side of the door body, and has a first side edge located near the side edge side of the door body and near The second side edge on the other side edge side of the door body can be moved around a second axis that extends vertically between the first side edge and the second side edge as a central axis, and is installed to reduce pressure Displacement between the opening-closing position and the pressure-reducing opening-opening position; a door latch device, which is adjacent to the other side edge of the door body, is installed in the door body and has a handle shaft to move the door body from the Installed in such a way as to extend horizontally from the front to the back, and can rotate around its axis direction; a handle is fixed to the handle shaft; and a latch bolt for the door body is located at the door opening in the door body In the locked position, the handle can be rotated with the handle Interlockingly, it protrudes from the other side edge of the door body to the outside, and is locked at a door locking position fitted with a door locking hole provided at the door opening side edge defining the door opening, and is pulled into the door Displacement between the door unlocking position in the body; and the latch bolt for the decompression door panel, when the decompression door panel is in the decompression opening blocking position, it can be linked with the rotation of the handle shaft, The door plate lock position in which the lock hole on the door plate of the side edge of the pressure reduction door plate is fitted and the door plate unlock position pulled back from the door plate lock hole are shifted. The door according to item 1 of the patent application scope, further comprising a swing member fixed to the handle shaft and extending away from the handle shaft in parallel with the front and back surfaces of the door body; the pressure reducing door panel With a latch bolt, when the decompression door plate is in the decompression opening locking position, it can be linked with the swing of the swing member centered on the handle shaft, and the door plate lock position and the door plate unlock position can be linked. Between shifts. The door according to item 1 or item 2 of the scope of patent application, further comprising a magnet-type adsorption device for positioning the pressure-reducing opening to a position closer to the pressure-reducing opening opening position than the pressure-reducing opening blocking position. The decompression door panel is magnetically attracted to the decompression opening locking position. The magnet-type adsorption device includes a first magnetic adsorption member provided on a second side edge of the decompression door panel, and a second magnetic adsorption member. Supported by the door body; and a second magnetic adsorption member shifting device for bringing the second magnetic adsorption member into contact with the first magnetic adsorption member of the pressure reduction door plate located at the pressure reduction opening blocking position. The adsorption adsorption position is shifted from the adsorption release position pulled away from the first magnetic adsorption member of the decompression door panel located at the decompression opening blocking position; at the adsorption position, the first and the first 2 The magnetic pole surfaces of the magnetic adsorption members will abut; the second magnetic adsorption member shifting device causes the second magnetic adsorption member positioned at the adsorption position to slide the magnetic pole surface relative to the magnetic pole surface of the first magnetic adsorption member. Shifted while in the suction Release position. A door latch device for pressure reduction is mounted on a door. The door has a door body that can move along a first axis that extends vertically along one side edge as a central axis, and can be locked at a door opening that closes the door opening. And the door opening opening position where the door opening is opened; the pressure reducing door plate is provided in the pressure reducing opening provided penetrating from the front side to the back side of the door body, and has a position close to the door body The first side edge of the one side edge side and the second side edge located near the other side edge side of the door body may extend vertically between the first side edge and the second side edge. The axis is a central axis and is installed to be displaceable between a decompression opening locking position and a decompression opening opening position; and a door latch device, which is adjacent to the other side edge of the door body and is installed in the door. Inside the body, a handle shaft is installed to extend horizontally in a direction in which the door body is penetrated from the front surface to the rear surface, and is rotatable about its axis direction; a handle is fixed to the handle shaft; and a door Latch bolts for the body, at the door body at the door When the mouth is locked, it can be linked with the handle shaft that rotates through the handle to protrude from the other side edge of the door body to the outside. It can be used to lock the door provided on the side edge of the door opening that defines the door opening. Displacement between the locked position of the door fitted with the hole and the unlocked position of the door being pulled into the body of the door; the decompression door panel latch device has a decompression door panel latch bolt, and the decompression door panel latch Bolts are provided in the door body, and when the decompression door plate is in the decompression opening locking position, it can be linked with the rotation of the handle shaft and locked on the door plate provided on the side edge of the decompression door plate. The door panel lock position fitted with the hole is shifted from the door panel unlock position pulled back from the door panel lock hole. The pressure-reducing door panel latching device according to item 4 of the scope of application for a patent, wherein the pressure-reducing door panel has a support body, which is disposed adjacent to the door-latch device in the door body; The support body is supported and can be displaced between a locked position of the door panel and an unlocked position of the door panel. The pressure-reducing door panel latch device according to item 5 of the scope of patent application, wherein the support body supports a lever that swings as the handle shaft rotates, and the lever swings in conjunction with the rotation of the handle so that The decompression door panel is latched with a latch bolt that is displaced between the door panel lock position and the door panel unlock position. The pressure-reducing door panel latch device according to item 4 of the patent application scope, comprising: a first support body provided adjacent to the door latch device in the door body, and supporting swinging as the handle shaft rotates A second support body is provided in the door body adjacent to the side edge of the opening delimiting the decompression opening, and the decompression door panel is supported with a latch bolt so that the decompression door panel can be locked to the door panel with the door panel. Displacement between unlocked positions; and connecting means for connecting the lever with the decompression door panel with a latch bolt, and in conjunction with the rotation of the handle, causing the decompression door panel latch bolt with the The door panel is shifted between unlocked positions. The pressure-reducing door panel latch device according to item 6 or item 7 of the patent application scope, further comprising a door shaft fixed to the handle shaft and separated from the handle shaft in parallel with the front and back surfaces of the door body. A swing member extending in a manner; the rotation of the handle is transmitted to the lever through the swing member to cause the lever to swing, and the latch bolt for the pressure reducing door plate is moved between the door plate lock position and the door plate unlock position Bit. The pressure-reducing door latch device according to any one of claims 4 to 7 of the scope of application for a patent, further comprising a magnet-type adsorption device, which is used to compare the locking position with the pressure-reducing opening. The decompression door panel, which is located on the side of the decompression opening opening position, is magnetically adsorbed to the decompression opening lock position. The magnet-type adsorption device includes: a magnetic adsorption member supported by a support; and a magnetic adsorption member displacement. A device for causing the magnetic adsorption member to be in an adsorption adsorption position abutting the magnetic adsorption member of the decompression door panel positioned at the decompression opening blocking position, and the decompression from the decompression opening blocking position. The adsorption release position pulled apart by the magnetic adsorption member of the door plate is shifted; at the adsorption position, the magnetic pole surface of the magnetic adsorption member of the magnetic adsorption device will abut the magnetic adsorption member of the decompression door plate; The magnetic adsorption member displacement device displaces the magnetic adsorption member at the adsorption position toward a direction in which a magnetic pole surface thereof slides with respect to a magnetic pole surface of the magnetic adsorption member of the adsorption door plate for decompression. Adsorption to the release position. The pressure-reducing door latch device according to item 8 of the scope of patent application, further comprising a magnet-type adsorption device for opening the pressure-reducing opening more than the position of the pressure-reducing opening being locked. The decompression door panel is magnetically attracted to the closed position of the decompression opening by the position side. The magnet type adsorption device includes: a magnetic adsorption member supported by a support body; and a magnetic adsorption member shifting device to place the magnetic adsorption member on The magnetic adsorption member of the decompression door plate located at the decompression opening blocking position abuts the adsorption adsorption position, and pulled from the magnetic adsorption member of the decompression door plate located at the decompression opening blocking position. Displacement between open adsorption release positions; at the adsorption position, the magnetic pole surface of the magnetic adsorption member of the magnet type adsorption device will abut the magnetic adsorption member of the decompression door plate; the magnetic adsorption member displacement device, Displace the magnetic adsorption member at the adsorption position in a direction in which the magnetic pole surface thereof slides relative to the magnetic pole surface of the magnetic adsorption member of the decompression adsorption door plate to the adsorption release position. Home.