Opening / closing device

Abstract

To improve the operability of releasing a latch on a sleeve door.SOLUTION: An opening / closing device includes a shutter curtain 10 that slides in an open / close manner in the vertical direction on one side of the width of an opening A, a sleeve door 20 that rotates for opening / closing on the other side of the width of the opening A, and a locking / unlocking mechanism 24 that locks / unlocks the sleeve door 20 in the closed state to a surrounding immovable part. The locking / unlocking mechanism 24 includes a latch 24a1 that protrudes from the sleeve door 20 in the closed state and engages with the immovable part, an operating lever 24b provided on the outer surface of the sleeve door 20, and an operating force transmission member 24c that transmits an operating force applied to the operating lever 24b to a latch side within the sleeve door 20, and the operating force transmitted by the operating force transmission member 24c releases an engaged state of the latch 24a1.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an opening and closing device that closes an opening with a shutter curtain and a sleeve door arranged in the width direction. [Background technology]

[0002] Conventional inventions of this type, as described in Patent Document 1, include a sleeve door-linked fire and smoke shutter in which a latch that holds the sleeve door in a closed position is provided on the upper frame, a lever for releasing this latch is provided on the vertical frame on the side where the sleeve door is stored, and a wire that transmits the operating force of the lever runs from the lever on the vertical frame side to the latch on the upper frame side. According to this conventional technology, when the side door is in a closed position, if the lever is operated, the operating force is transmitted by a wire, causing the latch to disengage from the opposing latch receiver, allowing the side door to be opened. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-46994 Summary of the Invention [Problem to be solved by the invention]

[0004] However, according to the above-mentioned conventional technology, the wire extends upward from the lever within the side vertical frame, is bent at the top and extends forward, and is then bent within the front upper frame and extends toward the door edge, where it is connected to a mechanism that extends and retracts the latch. This increases the sliding resistance of the wire, which in turn increases the force required to operate the lever. Furthermore, after operating the side lever, the operator must turn forward and pull the closed side door to open it. In other words, the operating positions are divided into the side and the front, and improvements in operability are required. [Means for solving the problem]

[0005] In view of the above problems, one aspect of the present invention is provided with the following configuration. An opening and closing device comprising: a shutter curtain that slides open and closed in the vertical direction on one side of the width of the opening; a sleeve door that rotates open and closed on the other side of the width of the opening; and an engagement / disengagement mechanism that engages and disengages the sleeve door when closed to a surrounding immovable part, wherein the engagement / disengagement mechanism comprises a latch that protrudes from the sleeve door when closed and engages with the immovable part, an operating lever provided on the outer surface of the sleeve door, and an operating force transmission member that transmits the operating force on the operating lever to the latch side within the sleeve door, and wherein the operating force transmitted by the operating force transmission member disengages the latch from its engaged state. [Effects of the Invention]

[0006] Since the present invention is configured as described above, it is possible to improve the operability of unlatching a sleeve door. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a front view showing an example of an opening and closing device according to the present invention. [Figure 2] This is a left side view of the opening and closing device shown in first angle view, where (a) shows the sleeve door stored in the door pocket, and (b) shows the sleeve door pulled out of the door pocket and closed. [Figure 3] FIG. 2 is a cross-sectional view taken along the line (III)-(III) in FIG. [Figure 4] This is a vertical cross-sectional view of the main parts of the sleeve door in a closed state, showing the operating lever being pulled to release the latch. [Figure 5] This is an oblique view of the main parts of the side door with the cover covering the latch device removed, showing the structure inside the side door. DETAILED DESCRIPTION OF THE INVENTION

[0008] Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an example of a switching device according to the present invention. This opening and closing device 1 comprises a shutter curtain 10 that slides open and closed in the vertical direction on one side of the width of the opening A (see Figure 3) (the left side in Figure 1), a sleeve door 20 that rotates open and closed in the front-to-back direction on the other side of the width of the opening A, a lintel 30 that spans the width above the shutter curtain 10 and sleeve door 20, a storage section 40 above the lintel 30 that stores and extends the shutter curtain 10, and a door pocket 50 that stores the sleeve door 20 when it is open. This opening and closing device 1 constitutes a sleeve door-linked fire and smoke shutter that automatically closes the sleeve door 20 and shutter curtain 10 to form a fire compartment when a disaster prevention signal is received.

[0009] The opening A is an opening provided in the middle of a passageway or at an entrance or exit of a building, underground passage, vehicle, ship, etc. One side of the width of the opening A is opened and closed by a shutter curtain 10 that slides up and down. The other side of the width of the opening A is opened and closed by a swinging sleeve door 20.

[0010] The shutter curtain 10 is constructed by connecting multiple slats, each made by bending a horizontally elongated, roughly rectangular metal plate, in the vertical direction to form the opening / closing body, and connecting a seat plate to the lower end of this opening / closing body so that it can be seated on a lower immovable surface X (e.g., a floor, the ground, a sliding surface, etc.). Other examples of this shutter curtain 10 include a single or multiple panels, or a fire-resistant sheet or net-like material arranged in the opening and closing direction, or an appropriate combination of slats, panels, pipes, sheet or net-like materials, etc.

[0011] The shutter curtain 10 having the above-described configuration is opened and closed while being guided in the vertical direction by the left and right guide rail portions 20a, 20b. One guide rail portion 20a (the right side in FIG. 1) is provided integrally with the door leading side of the sleeve door 20 described later. The other guide rail portion 20b (left side in FIG. 1) is erected in a long shape between the lower fixed surface and the lintel 30 so as to provide a path for opening and closing the shutter curtain 10 between it and the guide rail portion 20a. Each of these guide rail portions 20a, 20b has a concave cross section that surrounds the widthwise end of the shutter curtain 10 and is continuous in the up-down direction.

[0012] The sleeve door 20 comprises a sleeve door main body 21 that rotates to open and close around a vertical rotation axis P, a slidable door 22 that opens and closes an opening 21a provided in the sleeve door main body 21, a sleeve door handle 23 that is operated when rotating the entire sleeve door 20 open and closed, an engagement / disengagement mechanism 24 that engages and disengages the sleeve door main body 21 in the closed state with surrounding immovable parts (in the illustrated example, the latch receiver 31 in the lintel 30) by external operation, and an engaged part 25 that is engaged by an automatic closing device 60 for the sleeve door.

[0013] The rotation axis P is located inside the side door pocket 50 (see FIG. 3). This rotation axis P is a hinge (for example, a spring-loaded hinge, a spring hinge, etc.) equipped with a biasing mechanism that biases the sleeve door 20 in the closing direction, and when the sleeve door 20 is released from the automatic closing device for sleeve doors 60, the sleeve door 20 is rotated closed by the biasing force of the biasing mechanism.

[0014] The sleeve door main body 21 is a substantially hollow plate-shaped member, and is formed in a rectangular shape when viewed from the front, and is elongated in the vertical direction. This sleeve door main body 21 is provided with an opening 21a that is opened and closed by a slat door 22. This opening 21a is a through-hole that is rectangular in front view and allows people, objects, etc. to pass through, and is opened and closed by the slat door 22.

[0015] The siding door 22 is formed in the shape of a rectangular plate that opens and closes the opening 21a of the sleeve door main body 21, and one end side in the width direction (the right end side in Figure 1) is pivotally supported to the sleeve door main body 21 via a hinge or the like.

[0016] In the drawing, the symbol 22a denotes a swivel door handle that is operated to engage and disengage the swivel door 22 with the surrounding sleeve door body 21. When this swivel door handle 22a is rotated, a latch (not shown) engages and disengages with the surrounding sleeve door body 21. When the opening A is closed by the shutter curtain 10 and the sleeve door 20, evacuees can manually open the scuttle door 22 and pass through.

[0017] The handle 23 for the sleeve door is a part that is gripped to rotate the sleeve door 20, and is provided on the outer surface of the front side and the outer surface of the back side at the door tip side of the sleeve door 20. Each side door handle 23 fits into a recessed portion provided on the outer surface of each side door 20, and is configured to be pulled out from the outer surface of the side door 20 toward the user when handled. As mentioned above, this handle 23 for the side door is used as a handle and is not linked to a latch or the like.

[0018] The engagement / disengagement mechanism 24 comprises a latch device 24a that extends and retracts a latch 24a1, an operating lever 24b provided on the outer surface of the open side of the sleeve door main body 21, and an operating force transmission member 24c that transmits the operating force on the operating lever 24b to the upper latch device 24a. This engagement / disengagement mechanism 24 causes a latch 24a1 to protrude from the closed sleeve door body 21 and engage with a fixed part, the latch receiver 31. In addition, this engagement / disengagement mechanism 24 releases the engaged state by operating the operating lever 24b.

[0019] The latch device 24a comprises a latch 24a1 that slides a predetermined amount in the vertical direction, a biasing member (e.g., a compression spring, not shown) that biases the latch 24a1 in the protruding direction (upward in the illustrated example), and a release operating portion 24a2 that is pulled downward when the protruding latch 24a1 is to be retracted (see Figures 4 and 5).

[0020] The latch 24a1 is a roughly rod-shaped member having a cam slope 24a11 on its upper end side, and is supported so as to slide between a protruding position protruding from the upper end of the sleeve door main body 21 and a retracted position retracted into the sleeve door main body 21.

[0021] According to the above configuration, when the sleeve door 20 rotates in the closing direction, the latch 24a1 slides downward, with the cam slope 24a11 in sliding contact with the lower edge of the lintel 30 and the edge of the latch receiver 31. Furthermore, as the rotation continues, the latch 24a1 slides upward due to the biasing force of the biasing member (not shown) and fits into the latch receiver 31. Furthermore, when the release operation portion 24a2 is pulled downward, the latch 24a1 slides downward against the biasing force of the biasing member and comes out of the latch receiver 31.

[0022] The operating lever 24b is provided on the outer surface of the opening side of the sleeve door 20. That is, this operating lever 24b is located on the surface facing the door pocket 50 when the sleeve door 20 is opened and stored in the door pocket 50.

[0023] This operating lever 24b is provided so as to be recessed into the opposing surface of the sleeve door main body 21, and protrudes from the opposing surface when pulled toward the front. More specifically, the opposing surface of the sleeve door body 21 is provided with a recessed member 21b (see FIG. 4) that accommodates the operating lever 24b in a retractable manner. The operating lever 24b is formed in a long shape extending in the vertical direction within the recessed member 21b. This operating lever 24b is normally stored within the recessed member 21b so as not to protrude from the surface of the sleeve door main body 21, and when pulled towards the front, it protrudes outwards from the recessed member 21b.

[0024] The upper end of this operating lever 24b is pivoted within the concave member 21b by a rotation axis 24b1 in the door width direction, and has an operated portion 24b2 on one radial side with this rotation axis 24b1 as a fulcrum, and a pulling portion 24b3 on the other side for pulling the operating force transmission member 24c. That is, when the operated portion 24b2 is pulled and rotated toward the front, the pulling portion 24b3 rotates in the same direction and pulls the operation force transmission member 24c downward.

[0025] The operating lever 24b of the above configuration is located on the side door 20, closer to the door tip than the submerged door 22, above the automatic closing device 60 for the side door and the handle 23 for the side door, and near the upper end of the submerged door 22. This configuration improves the operability of the operating lever 24b, and also prevents erroneous operation of the operating lever 24b due to interference with the automatic closing device 60 for the side door, as well as tampering with the operating lever 24b.

[0026] The operating force transmission member 24c is a flexible, long body that transmits the operation of the operating lever 24b to the latch 24a1 inside the sleeve door body 21, and in the illustrated example is a metal wire. More specifically, the lower end of the operation force transmission member 24c is connected to the pulling portion 24b3 of the operation lever 24b, and the upper end of the operation force transmission member 24c is connected to the release operation portion 24a2 of the latch device 24a via the fastening position adjustment mechanism 24d. When the operating force transmission member 24c is pulled downward by operating the operating lever 24b, the release operating portion 24a2 is also pulled downward, and the latch 24a1 is retracted into the sleeve door main body 21.

[0027] The fastening position adjustment mechanism 24d is a mechanism for finely adjusting the fastening position of the upper end side of the operation force transmission member 24c in the vertical direction, and is composed of a bracket 24d1, a nut 24d2, and the like.

[0028] In the illustrated example, the bracket 24d1 is an inverted L-shaped sheet metal member, and its upper end piece is attached in a crown-like manner to the male threaded portion on the lower end side of the release operation portion 24a2, and is fixed by a nut 24d2 that screws into the male threaded portion. Therefore, it is possible to adjust the position in the vertical direction by loosening the nut 24d2, and this position adjustment can improve the operability of the latch 24a1 in response to the operation of the operating lever 24b.

[0029] The engaging portion 25 is configured in a hook or U-shape that protrudes from the outer surface of the sleeve door 20, and is engaged by the automatic closing device 60 for the sleeve door described below when the sleeve door 20 is stored in the door pocket 50.

[0030] The lintel 30 is a long member that extends horizontally above the shutter curtain 10 and the sleeve door 20 when they are closed. This lintel 30 has a shutter curtain insertion portion 30a through which the shutter curtain 10 is inserted in the vertical direction, and an upper frame portion 30b that faces the upper end of the sleeve door 20 in the closed state, which are integral with or integral to each other (see Figure 1).

[0031] The upper frame portion 30b is provided with a latch receiver 31 that concavely receives the latch protruding upward from the sleeve door 20, and a sleeve door closure detection portion 32 that detects the closed state of the sleeve door 20 and transmits a detection signal.

[0032] The latch receiver 31 is a concave member that opens downward, and is fixed within the upper frame portion 30b so that its opening faces the latch 24a1 that protrudes upward from the side door 20.

[0033] The sleeve door closure detection unit 32 is a contact or non-contact sensor that outputs an ON signal when the shutter curtain 10 is fully closed and an OFF signal when it is opened, and is composed of, for example, a limit switch or a proximity sensor.

[0034] The storage section 40 is equipped with a winding shaft 41 that winds up and unwinds the shutter curtain 10, an opening / closing mechanism 42 that drives and rotates or brakes the winding shaft 41 via a power transmission means such as a chain and sprocket, and an automatic closing device 43 for the shutter curtain that causes the shutter curtain 10 to descend under its own weight (closing operation), and is attached to a fixed position above the opening A (the hanging wall W in the example shown in Figure 2).

[0035] The winding shaft 41 is configured in a substantially columnar or cylindrical shape, and the upper end side of the shutter curtain 10 is fixed to its outer circumferential surface. The winding shaft 41 is rotatably supported on both axial sides via brackets or the like.

[0036] The opening / closing machine 42 integrally comprises a drive source (e.g., an electric motor) for rotating the winding shaft 41, a brake mechanism (not shown) for braking the rotation caused by this drive source, and an opening / closing position detection device (not shown) for detecting the opening / closing position of the shutter curtain 10.

[0037] The automatic shutter curtain closing device 43 operates in response to an external signal to mechanically operate the opening / closing device 42 to either a free state where it can rotate freely or to a restrained state. In the free state, the winding shaft 41 is free to rotate, and the shutter curtain 10 closes under its own weight.

[0038] The door pocket 50 is formed in a recessed shape on a wall surface Y on the side of the opening A that is opened and closed by the shutter curtain 10 and the sleeve door 20, into which the sleeve door 20 can be fitted and removed (see Figs. 1 to 3). This door pocket 50 stores the sleeve door 20 so that it is approximately flush with the wall surface Y.

[0039] Within this door pocket 50, an automatic closing device 60 for the sleeve door is provided which locks the sleeve door 20 in an open state and releases this locked state in response to a disaster prevention signal received from outside, thereby enabling the sleeve door 20 to be rotated closed.

[0040] The automatic closing device 60 for the sleeve door locks the locked portion 25 of the sleeve door 20 when the sleeve door 20 is stored in the door pocket 50. In Figure 2, reference numeral 61 denotes an electric wire for controlling the automatic closing device for sleeve doors 60. When a disaster prevention signal is received, a control circuit (not shown) operates the automatic closing device for sleeve doors 60 via the electric wire 61, thereby releasing the locked state of the sleeve door 20. The disaster prevention signal may be, for example, a signal emitted by a fire detector or a signal input from the outside.

[0041] <Action and effect> Next, the characteristic functions and effects of the opening and closing device 1 having the above configuration will be described in detail. When the opening A is in the fully open state and the automatic closing device 60 for the sleeve door releases the sleeve door 20 in response to a disaster prevention signal, the sleeve door 20 rotates in the closing direction due to the force of the biasing mechanism provided on the rotation axis P (hinge, etc.), and the latch 24a1 engages with the latch receiver 31 to fully close it.

[0042] When the side door 20 is fully closed, the side door closing detection unit 32 detects this fully closed state and emits a detection signal. In response to the detection signal, the control circuit (not shown) of the opening and closing device 1 activates the automatic closing device 43 for the shutter curtain, causing the shutter curtain 10 to close under its own weight. The shutter curtain 10 closes downward along the guide rail portions 20a, 20b on both sides, and comes to rest on the lower fixed surface X, entering a fully closed state.

[0043] When opening the closed opening A, an operator or the like first operates an operation switch (not shown) to open the shutter curtain 10 to the fully open position.

[0044] After this, the operator pulls the operating lever 24b toward himself to release the latch device 24a. During this release operation, the force generated by operating the operating lever 24b is transmitted linearly to the upper latch device 24a via the operating force transmission member 24c (wire). Therefore, the operating resistance of the operating lever 24b is relatively small.

[0045] After releasing the latch device 24a as described above, the operator rotates the sleeve door 20 in the opening direction by pulling the sleeve door handle 23 toward themselves. The rotated sleeve door 20 is stored in the door pocket 50 and locked by the automatic sleeve door closing device 60.

[0046] Therefore, according to the opening and closing device 1 having the above configuration, the sliding resistance of the operation force transmission member 24c is small, and the operation force required to operate the operation lever 24b is relatively small. Moreover, the operator need only operate the operating lever 24b and open the side door 20 while facing forward without turning to the side. This provides excellent operability.

[0047] <Modification> According to the above embodiment, the sleeve door 20 is configured to be engaged and disengaged with an upper immovable portion (latch receiver 31), but as another example, it is also possible to configure the sleeve door 20 to be engaged and disengaged with a lower immovable portion (lower immovable surface X).

[0048] According to the above embodiment, the operation force transmission member 24c is a metal wire as a particularly preferred example, but other examples of the operation force transmission member 24c include resin wire and other string-like members.

[0049] According to the above embodiment, the operating lever 24b is operated by pulling it toward the user, but other examples of the operating lever 24b include a configuration in which it is operated in a rotational direction around an axis in the door thickness direction, or a configuration in which it is operated by sliding in a direction along the outer surface of the sleeve door 20.

[0050] According to the above embodiment, the operating lever 24b is recessed into the outer surface of the sleeve door 20, but as another example, the operating lever can be configured to protrude from the outer surface of the sleeve door 20. In this case, it is preferable to provide a recess in the door pocket 50 into which the operating lever protruding from the sleeve door 20 can be recessed.

[0051] Furthermore, the present invention is not limited to the specific configurations described above, and can be modified as appropriate within the scope of the present invention.

[0052] <Summary> As described above, the above embodiments disclose the following inventions. (1) An opening and closing device (see Figures 1 to 5) comprising: a shutter curtain that slides open and closed in the vertical direction on one side of the width of the opening; a sleeve door that rotates open and closed on the other side of the width of the opening; and an engagement / disengagement mechanism that engages and disengages the sleeve door in the closed state with a surrounding immovable part, wherein the engagement / disengagement mechanism comprises a latch that protrudes from the sleeve door in the closed state and engages with the immovable part, an operating lever provided on the outer surface of the sleeve door, and an operating force transmission member that transmits the operating force on the operating lever to the latch side within the sleeve door, and wherein the latch is disengaged by the operating force transmitted by the operating force transmission member. (2) An opening and closing device as described in (1) (see Figures 1, 4 and 5), characterized in that the operating force transmission member is a flexible, elongated body that transmits the operation of the operating lever to the latch inside the sleeve door. (3) The opening and closing device described in (1) or (2) (see Figure 4) is characterized in that the operating lever is recessed into the outer surface of the sleeve door and protrudes from the outer surface of the sleeve door when pulled toward the front. (4) A door pocket for storing the sleeve door in an open state is provided on the side of the opening, The opening and closing device according to any one of (1) to (3) is characterized in that the operating lever is provided on the outer surface of the sleeve door facing the door pocket (see FIG. 3). (5) An opening and closing device described in any of (1) to (4) (see Figure 1) is characterized in that it is equipped with an automatic closing device for a sleeve door that locks the sleeve door in an open state on the side of the opening and releases this locking state in response to a signal received from outside, allowing the sleeve door to be rotated closed, the latch is arranged to protrude upward from the sleeve door, and the operating lever is arranged above the automatic closing device for the sleeve door. [Explanation of symbols]

[0053] 10: Shutter curtain 20:Side door 24: Engagement / disengagement mechanism 24a: Latching device 24a1: Latch 24a2: Release operation part 24b: Control lever 24c: Operation force transmission member 30: Lintel 31: Latch receiver 30a: Shutter curtain insertion part 30b: Upper frame part 40: Storage area 50: Door pocket 60: Automatic closing device for sleeve doors A: Opening

Claims

1. The shutter curtain slides up and down on one side of the width of the opening, and the sleeve door rotates to open and close on the other side of the width of the opening. The mechanism engages and disengages the sleeve door when closed to a fixed part around the door. The locking mechanism comprises a latch that protrudes from the closed side door and engages with a fixed portion, an operating lever provided on the outer surface of the side door, and an operating force transmission member that transmits the operating force on the operating lever to the latch side within the side door, and is characterized in that the latch is released from its engaged state by the operating force transmitted by the operating force transmission member.

2. 2. The opening and closing device according to claim 1, wherein the operating force transmission member is a flexible, elongated body that transmits the operation of the operating lever to the latch inside the sleeve door.

3. The opening and closing device according to claim 1, characterized in that the operating lever is recessed into the outer surface of the sleeve door and protrudes from the outer surface of the sleeve door when pulled toward the front.

4. A door pocket for storing the sleeve door in an open state is provided on the side of the opening, 2. The opening and closing device according to claim 1, wherein the operating lever is provided on an outer surface of the sleeve door facing the door pocket.

5. The automatic door closing device locks the open door at the side of the opening, and releases the locking state in response to a signal received from the outside, allowing the door to be rotated closed. The latch is provided so as to protrude upward from the sleeve door, An opening and closing device according to any one of claims 1 to 4, characterized in that the operating lever is provided above the automatic closing device for the sleeve door.

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