JP2000179254A - Opening and closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening and closing device improved in shielding performance by a simple structure. SOLUTION: A pair of guide rails 4 having a vertical guide groove are provided substantially in parallel with a gradient to the vertical direction on both side edges of an opening 3 of a part 2 to be shielded. A winder main body 10 for taking up and rewinding a shielding sheet 21 which is like a sheet having flexibility and has both side edges engaged with the guide grooves is disposed in the vicinity of the upper edge of the opening 3. A sheet-like closing sheet 23 adapted to close a window part 22 opened in the substantially central area to be opened and closed is installed on the upper surface side of the shielding sheet 21. Guide rods 25 positioned near the upper and lower sides of the window part 22 with both end parts respectively engaged with the guide grooves are provided on the upper surface side of the shielding sheet 21. When the shielding sheet 21 is rewound to close the opening 3, both side edges of the shielding sheet 21 are brought into face contact with the lower edge of the guide groove positioned on the lower side by dead load to substantially air-tightly shield the part 2 to be shielded without another member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening and closing device in which a shield moves while being guided by a guide rail to shield an opening of a shielded portion.

[0002]

2. Description of the Related Art Conventionally, as this kind of opening / closing device, for example, a screen device 42 for preventing fire spread, which blocks a corridor 41 as a shielded portion of a building as shown in FIGS. Various configurations are known, such as a screen device that partitions a partial section in a factory.

The screen device shown in FIGS. 11 and 12 has a guide groove 44 formed in a longitudinal direction and a concave groove shape along the vertical direction on a side wall surface constituting a surface to be an opening 43 for shielding. And a pair of guide rails 45 each having the same. In addition, the ceiling portion that forms the shielding surface that is the upper edge of the opening 43 where the guide rail 45 is located has an axial direction along the substantially horizontal direction in which the axial direction is the facing direction of the guide rails 45, 45. A winding device 47 having a winding section 46 is provided. The winding device 47 is provided with a guide rail 45
The corridor is guided by the engagement of both side edges in the vertical direction with the guide groove 44 of
Attach the upper edge of a shielding sheet 48 made of a flame-retardant resin or the like that shields 41 to the winding part 46,
Wind up and rewind 48.

A window 50 through which a person can pass is formed at substantially the center of the shielding sheet 48, and upper and lower edges are sewn to the shielding sheet 48 so that the window 50 can be opened and closed. A seat 51 is provided. Further, the shielding sheet 48 has an elongated rod shape, and both ends in the longitudinal direction are guide rails 45,
Reinforcing members 52 slidably engaged with the guide grooves 44 are attached to the guide grooves 45 so that the shielding sheet 48 does not come off from the guide rails 45, such as being rolled up.

[0005]

However, in the conventional screen device 42 shown in FIGS. 11 and 12,
Since a gap is formed between the guide rails 45, 45 and the shielding sheet 48, dust, smoke, and noise may leak through the gap, and further dustproof, smokeproof, soundproof, etc. Shielding properties are desired. For this reason, the guide rail
It is conceivable that an airtight member having elasticity is provided in the form of a flange along the edges of the guide grooves 44, 45 in the form of a flange and is brought into contact with the shielding sheet 48 to close the gap.
In the configuration in which the shielding sheet 48 is abutted, friction occurs with the airtight member at the time of winding and rewinding of the shielding sheet 48, and a load is applied to a motor that winds and rewinds, thereby impairing the opening and closing operation of the shielded portion 41. At the same time, there is a possibility that each part for winding and rewinding and the shielding sheet 48 may be damaged. Further, maintenance and inspection such as frequent replacement of the airtight member so that the airtight member is not worn and the shielding property is not impaired become complicated.

In the conventional screen device 42 shown in FIGS. 11 and 12, a closing sheet for closing the window 50 is provided.
51 is a window part for dustproof, smokeproof, sound insulation, etc.
Since it is necessary to close the window 50 substantially airtightly, since the upper and lower edges are attached, if the shielding sheet 48 or the closing sheet 51 expands and contracts due to, for example, a temperature change, the window 50 can be substantially airtightly closed. And the dust-proofing property, smoke-proofing property, sound-insulating property, etc. are impaired, and the shielding ability of the shielded portion 41 may be reduced, and it is difficult to improve the productivity. Moreover,
When the upper and lower edges are attached, there is a possibility that it may be difficult to open the window 50 so as to turn the closing sheet 51 and pass.

[0007] In view of the above problems, an object of the present invention is to provide a switchgear having a simple structure and improved shielding performance.

[0008]

According to a first aspect of the present invention, a pair of opening and closing devices are provided in a pair of substantially parallel to the opening that opens to the shielded portion, with the longitudinal direction being inclined with respect to the vertical direction and being substantially parallel. A guide rail having guide grooves opposed to each other, and both side edges in the vertical direction are movably engaged with the guide grooves of these guide rails, and the opening can be opened and closed by moving while being guided along these guide grooves. And a shielding member to be closed.

A guide rail provided with a guide groove along the longitudinal direction for guiding the movement by movably engaging both side edges of a shield for opening and closing the opening with the opening of the shielded portion, Since the longitudinal direction is inclined with respect to the vertical direction and provided in a pair substantially in parallel, both edges of the shield abut against the edge located below the guide groove of the guide rail by its own weight, and it is easy without using a separate member With such a configuration, the portion to be shielded is substantially airtightly shielded.

The opening and closing device according to a second aspect is the opening and closing device according to the first aspect, wherein:
At least one edge is attached to one surface of the shield facing upward, and the cover is configured to close the window so that the window can be opened and closed.

[0011] At least one edge of a closing member for opening and closing a window formed in the shielding member is attached to one surface side facing upward of the shielding member. Since the part is closed, the part to be shielded is substantially airtightly shielded with a simple configuration without using a separate member. In addition, by attaching at least one edge of the closing body, the mounting process can be reduced and productivity can be improved, and the degree of freedom of the closing body can be improved, and the opening and closing of the window can be easily performed. Even if the window expands and contracts, the substantially airtight closure of the window is maintained.

According to a third aspect of the present invention, there is provided the opening / closing device according to the second aspect, wherein the closing body has a sheet shape having flexibility.

[0013] Since the sheet-like closing member having flexibility is used, it is easy to attach to the shielding member and the productivity is improved. By doing so, the window is opened and closed, and the window is easily opened and closed with a simple configuration.

According to a fourth aspect of the present invention, in the opening and closing device according to any one of the first to third aspects, the guide rail has a lower end inclined toward the shielded portion.

Since the lower end of the guide rail is inclined toward the shielded portion and the guide rail is provided in the opening, for example, the angle between the ceiling surface defining the shielded portion and the shield is on the shielded portion side. Because of the acute angle, even if the temperature on the shielded part side rises and the air pressure near the ceiling of the shielded part increases due to convection etc., the shield will be pressed against one edge of the guide groove of the guide rail. Thus, the shielded portion is reliably shielded.

[0016]

An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a screen device as an opening / closing device. The screen device 1 is provided with an opening 3 of a shielded portion 2, for example, a door of a corridor of a building, a room, or a building. The longitudinal direction is inclined with respect to the vertical direction on both sides of the corridor, which is the opening edge of the entrance such as entrances and emergency exits, or the opening of the place where it is necessary to divide it as a fire protection section for fire prevention and smoke prevention And a pair of guide rails 4 and 4 which are attached substantially parallel to each other.

As shown in FIGS. 3 and 5, the guide rails 4 and 4 have side plate portions 4b which are substantially perpendicular to each other and which are parallel to each other on both sides in the longitudinal direction of the elongated plate-shaped back plate portion 4a. A front plate portion 4c is bent at the edge of each side plate portion 4b, 4b with a gap in a direction substantially opposite to the back plate portion 4a and opposed to each other, and formed in a substantially U-shaped cross section. Have been. Further, the guide rail 4 is a guide plate portion which is formed to be bent substantially inward on the opposing edges of the front plate portions 4c, 4c.
4d, 4d. Further, flange portions 4e, 4e which are bent substantially vertically toward the inner surfaces of the side plate portions 4b, 4b are provided at the leading edges of the guide plate portions 4d, 4d.
The guide rail 4 has a guide groove 6 formed along the longitudinal direction of the guide rail 4 for opening the slit 5 between the guide plates 4d, 4d. The opening 3 is attached and fixed to the left and right side edges of the opening 3 such that the lower end is displaced toward the shielded portion side.

Further, the guide grooves 6 of the guide rails 4, 4
As shown in FIGS. 1 and 3, the lower end portion 6 extends from the guide groove 6 to the shielded portion 2 which is one side, that is, the side plate portion 4b, the front plate portion 4c, the guide plate portion 4d, and the flange. The lower end of the portion 4e is notched, and a notch 7 that opens the lower end of the guide groove 6 to the side is formed so as to communicate with the guide groove 6. At the lower end of the guide groove of the guide rails 4, 4, an airtight member 8 as a guide is located on the opposite side to the notch 7, that is, on the guide plate 4 d opposite to the notch 7. Installed. The hermetic member 8 is formed of a material suitable for a sealing member such as a synthetic resin or rubber and has a triangular cross section, and a surface facing the notch 7 has a curved concave guide surface 8 a facing the notch 7. Is provided.

As shown in FIG. 1, the screen device 1 includes a winding device main body 10 as a winding means. As shown in FIGS. 4 to 6, the winding device main body 10 is attached to a support wall 11 of a structure constituting the upper edge of the opening 3, and faces the guide rails 4, 4, that is, the opening 3.
Along the upper edge of the main body case 12.
In addition, guide rails 4 and
An insertion opening 13 is formed in the form of an elongated slit and communicates with the guide groove 6 of the guide rails 4, 4 along the opposing direction of the guide rail 4. It is preferable that an opening edge of the insertion opening 13 is formed so as to be inclined corresponding to the guide groove 6 of the inclined guide rail 4.

Further, an elongated rod-shaped winding portion 15 is rotatably supported in the main body case 12 along the longitudinal direction. A pulley 16 is integrally provided at one end of the winding portion 15 in the axial direction. Also, in the body case 12,
A motor (not shown) capable of reversing forward and backward as a driving means is provided. An endless belt-shaped drive transmission member 19 is attached to a drive pulley 18 provided on an output shaft 17 of the motor, which is wound around the pulley 16 of the winding unit 15,
The drive of the motor is transmitted, and the winding unit 15 rotates. In addition,
The drive transmission member 19 is not limited to an endless belt shape, and may have any configuration for transmitting rotational drive by a chain, a gear, or the like.

One end edge of a sheet-shaped shielding sheet 21 as a shielding member is attached to the winding portion 15, and the shielding sheet 21 is guided by the winding portion 15 rotated by driving a motor. Winding and rewinding, that is, lifting and lowering through the insertion opening 13 of the main body case 12 in a state of being engaged with the guide grooves 6 and 6 of the rails 4 and 4,
Is opened and closed so as to shield the shielded portion 2. And
This shielding sheet 21 is a sheet material having flame retardancy or non-flammability when used for fire prevention and smoke prevention in places where it is necessary to shield as a fire protection section or when used for shielding evacuation exits. For example, it is formed of non-combustible cloth such as glass cloth or silica cloth. In addition, when used for air-tightness maintenance at places other than fire and smoke prevention applications, such as entrances and exits of cold storages and factories, or when used as shielding for entrances and exits through which people and goods pass, chloride It may be formed of a sheet made of a synthetic resin such as vinyl, polyester, or polyurethane, a material treated with flame retardancy or nonflammability, or a woven fabric, nonwoven fabric, or cloth having no flame retardancy or nonflammability.

Further, as shown in FIGS. 1 to 4, the shielding sheet 21 is provided with a window 22 which is opened at a substantially center in a substantially square shape. Further, on one surface of the shielding sheet 21, for example, a sheet-shaped closing sheet 23 as a closing body formed of the same material as the shielding sheet 21 and having a slightly larger diameter than the window portion 22 is provided as an upper edge. The part is sewn to close the window 22 so that it can be opened and closed. Further, the lower edge portion serving as the other edge of the shielding sheet 21 is folded upward in a curved shape, and the folded forward edge portion is further sewn. A first guide mounting portion 24 is provided. The first guide mounting portion 24 includes:
A substantially elongated cylindrical guide rod 25 as a guide body is inserted and held. The guide rod 25 is movably engaged with the guide grooves 6, 6 of the guide rails 4, 4 whose both ends in the longitudinal direction face each other.

The window 22 may be formed at any position. However, preferably, the opening is formed in an opening area and an opening position through which a person can easily pass. For example, in a state where the opening 3 is closed, the lower edge of the window 22 is formed at a position of about 15 cm or less from the floor surface. Good.

Further, on the side of the shielding sheet 21 to which the closing sheet 23 is attached, it is located above and below the attached closing sheet 23 and has an axial direction in the left-right direction like the first guide attaching portion 24. Second guide mounting portions 26 are provided, each of which has a substantially cylindrical shape and receives and inserts the guide rod 25.

The shielding sheet 21 is attached to the winding unit 15 so as to be wound and unwound so that the closing sheet 23 and the guide rod 25 are located on one side facing upward, that is, on the upper side. ing. Further, the lower end portion of the shielding sheet 21, which is the leading end portion in the movement direction by rewinding, is led out from the notch 7 toward the shielded portion 2, closes the opening 3, and shields the shielded portion 2.

Next, the operation of the above embodiment will be described.

In order to shield the shielded portion 2, the motor of the winding device main body 10 is driven in the rewinding direction by operation of various operation switches (not shown) or operation of a sensor for detecting flame or smoke. The part 15 rotates in the rewind direction. By the rotation of the winding portion 15 in the rewinding direction, the shielding sheet 21 wound on the winding portion 15 is unwound. The shielding sheet 21 is guided by its own weight through the insertion opening 13 opened in the main body case 12 of the winding device main body 10 by engaging with the guide grooves 6 and 6 of the guide rails 4 and 4 on both sides. Descend,
The opening 3 of the shielded portion 2 is gradually closed.

Then, the lower end of the shielding sheet 21 is
Is positioned at the lower end portion, the lower end both side edges of the shielding sheet 21 are guided by the notch portion 7 so as to ride on the guide surface 8 a of the airtight member 8, and the floor surface constituting the opening 3 from the guide rail 4.
The opening 3 is closed so as to be led out onto the floor 28 and is in contact with the floor surface 28 at the surface, and the shielded portion 2 is shielded.
Then, when a predetermined length is sent out, for example, a window portion
At the time when the lower edge portion of the roller 22 becomes 15 cm or less from the floor surface 28, the driving of the motor (not shown) of the winding device main body 10 stops, and the rewinding of the shielding sheet 21 stops.

Here, since the guide rails 4 and 4 are provided to be inclined with respect to the vertical direction, the shielding sheet 21 and the weight of the guide rod 25 cause the shielding sheet
It comes into contact with the guide plate portion 4d, which constitutes the lower edge of the guide groove 6 facing the other surface facing the lower side of 21, at its surface. Also, the guide groove 6
At the lower end portion, the shielding sheet 21 comes into contact with the guide surface 8a so as to ride on the airtight member 8. Further, in a portion led out through the notch 7, the shielding sheet 21 comes into contact with the floor surface 28 at the surface. For this reason, the shielded portion 2 is substantially airtightly shielded without separately providing a member for closing the gap between the shielding sheet 21 and the guide groove 6 along the guide groove 6.

When a person passes through the opening 3 in this shielding state, the closing sheet 23 and the shielding sheet 21 are flexibly deformed so that one side of the closing sheet 23 is rolled up, and the window 22 is closed.
Is opened, and the opened window portion 22 is passed. At the time of flexible deformation of the closing sheet 23 and the shielding sheet 21, the shielding sheet 21 is attached to the winding portion 15 at which rotation is stopped, and the closing sheet 23 and the shielding sheet 21 are suspended and supported by their own weights. Since the closing sheet 23 is placed on the shielding sheet 21 so as to overlap with the shielding sheet 21, the closing sheet 23 can be flexibly deformed so as to be easily loosened, and the window 22 can be easily opened. Further, at the time of this flexible deformation, the lower end portion of the shielding sheet 21 which is led out through the cutout portion 7 is in a state where the slack is loosened by the flexible deformation, but the lower surface portion is not covered with the floor surface 28. By maintaining the contact state, confidentiality of the lower edge portion can be obtained. Even if the floor surface 28 is no longer in contact with the floor surface, when the operation of flexibly deforming after the passage is released, the closing sheet 23 and the shielding sheet 21 are again overlapped by their own weight, and the lower part of the shielding sheet 21 The edge portion contacts the floor surface 28 at the surface, and the opening 3 is the same as before the passage.
Is kept closed and an airtight state is obtained.

On the other hand, when the shielding of the shielded portion 2 is released, that is, when the opening 3 of the shielded portion 2 is opened, the motor of the winding device main body 10 is driven in the winding direction by operating various operation switches (not shown). Then, the winding unit 15 rotates in the winding direction. The rotation of the winding section 15 in the winding direction winds up the shielding sheet 21.

As described above, according to the above embodiment, both sides of the flexible shielding sheet 21 for opening and closing the opening 3 are slidably engaged with the opening 3 of the shielded portion 2. Since a pair of guide rails 4 provided with guide grooves 6 along the longitudinal direction for guiding the movement in combination are provided substantially in parallel with the longitudinal direction inclined with respect to the vertical direction, the opening 3 of the shielded portion 2 is formed. In the closed state, both edges of the shielding sheet 21 abut against edges located below the guide grooves 6 and 6 of the guide rails 4 and 4 due to the weight of the shielding sheet 21, and the edges of the shielding sheet 21 and the guide groove 6 are closed. Can be closed. For example, there is no need to provide a separate airtight member for closing the gap by abutting the shielding sheet 21 along the edge of the guide groove 6 of the guide rail 4, for example. With the configuration, the shielded portion 2 can be shielded substantially airtightly, and the guide rail 4
Air, smoke, sound, dust, and the like can be prevented from leaking from both sides of the shielding sheet 21 that engages with the sheet, and sound insulation, dust resistance, smoke resistance, heat insulation, flame resistance, and the like can be improved.

Further, the two side edges are engaged with the inclined guide rails 4, 4, and the shielding sheet 21, which inclines and closes the opening 3 of the shielded portion 2 and faces upward, faces this shielding sheet 21 upward. In order to attach an upper edge portion which is at least one edge portion of the closing sheet 23 that opens and closes the window 22 formed in the sheet 21 so that it can be opened and closed, the closing sheet 23 abuts on the edge of the window portion 22 by its own weight. Compared to the configuration in which the upper and lower edges of the closing sheet 23 are sewn so that the window portion 22 is always closed, the closing sheet can be formed by simply sewing only the upper edge portion as in the above-described embodiment. 23 is securely closed and the closing sheet
23 can be easily attached, and manufacturability can be improved.For example, even if the shielding sheet 21 or the closing sheet 23 expands and contracts at a different rate due to a thermal load such as a flame, only the upper edge portion is attached and the lower side is attached. Since the edge portion is a free end, one of the shielding sheet 21 and the closing sheet 23 is loosened and the other is stretched, so that it is possible to prevent the closing sheet 23 from closing the window 22.

Further, since the sheet-like closing sheet 23 having flexibility is used, it can be attached to the shielding sheet 21 by sewing, thereby improving the manufacturability. The window 23 can be easily opened and closed with a simple configuration by simply deforming the sheet 23.

On the other hand, since the lower ends of the guide rails 4 and 4 are displaced toward the shielded portion 2 to be inclined and the guide rails 4 and 4 are provided in the opening 3, for example, a ceiling surface for partitioning the shielded portion 2 is provided. Since the angle between the shield sheet 21 and the shielded portion 2 is acute on the shielded portion 2 side, even if the temperature on the shielded portion 2 side increases and the air pressure near the ceiling of the shielded portion 2 increases due to convection, etc. Sheet
21 is pressed against the guide plate portion 4d located below the one edge of the guide groove 6 of the guide rail 4, so that the shielded portion 2 can be reliably shielded.

Further, a notch 7 is provided at the lower end of each of the guide rails 4 and 4 so that the edge of the shielding sheet 21 can be inserted into the guide groove 6 and is opened to the side.
By moving the shielding sheet 21 downward, the leading end of the shielding sheet 21 in the moving direction is led out from the guide rail 4 toward the side via the notch 7, so that, for example, in the shielding direction of the shielding sheet 21. The contact area between the lower end, which is the leading end of the movement, and the floor surface 28, which constitutes the lower edge of the opening 3, is increased, and the opening 3 is substantially airtightly closed at the lower end of the shielding sheet 21, and the shielded portion is closed. 2 can be reliably shielded.

Further, since the notch 7 is formed so as to open toward the shielded portion 2, for example, the floor surface 28 constituting the lower edge of the opening 3 by the weight of the lower end portion of the shielding sheet 21 led out through the notch 7. When the pressure in the shielded portion 2 changes, the opening 3 is substantially airtightly closed, and the shielded portion 2 can be reliably shielded even if the front end portion of the shielding sheet 21 is pressed against the shielded portion 2.

Then, the guide grooves 6 of the guide rails 4, 4
In order to provide the airtight member 8 having a curved concave guide surface 8a toward the notch 7 at a position facing the notches 7, 7 in the inside 6, the front end portion of the shielding sheet 21 is provided with the guide surface of the airtight member 8. At 8a, the sheet is smoothly guided from the guide grooves 6, 6 to the notches 7, 7, so that the shielding sheet 21 is used for rewinding to close the opening 3.
Can be moved smoothly, and the shielding sheet 21 abuts on the curved concave guide surface at the surface, so that the blocking property can be improved.

In addition, since the shielding sheet 21 is provided with guide rods 25, 25 whose longitudinal ends are slidably engaged with the opposing guide grooves 6, 6, for example, the shielding sheet 21 is turned up or the shielded portion is provided. Even if an external force such as the shielding sheet 21 being bent to one side due to the change in the pressure acts on the shielding sheet 21, both edges of the shielding sheet 21 are disengaged from the guide grooves 6 and 6 and the shielding is impaired. Can be prevented.

Since the guide bar 25 is provided on the upper surface, which is one surface facing the upper side of the shielding sheet 21, the lower surface of the shielding sheet 21 which comes into contact with the guide plate portion 4d located below the guide groove 6 by its own weight. The side is a flat surface without irregularities, and the gap between the guide groove 6 and the shielding sheet 21 can be reliably closed, and the shielding sheet 21 is pressed against the guide plate portion 4d of the guide groove by the weight of the guide rod 25. Thus, the shielded portion 2 can be reliably shielded.

Further, since the guide rod 25 is provided in the vicinity of the upper and lower portions of the window 22, even if the width of the opening 3 to be closed is large in the left-right direction in which the guide rails 4 and 4 are opposed to each other, the shielding is prevented. The seat 21 can be prevented from being loosened and coming off from the guide grooves 6, 6 of the guide rails 4, 4, and the opening area of the window 22 can be increased, for example, as shown in FIG. It is possible to improve the traffic of entering and exiting.

In the above-described embodiment, the window 22 is formed substantially at the center of the shielding sheet 21.
An opening may be formed on one side in the vertical direction, for example, as shown in FIG. 7 and FIG. According to this configuration, for example, when the screen device 1 is used as a smoke prevention device in the event of a fire, when evacuating to a wall in the event of a fire, the window portion 22 can be easily found and quick evacuation can be performed. In the configuration shown in FIGS. 7 and 8, the closing sheet 23 is formed so as not to engage with the guide rail 4, and the window 22 may not be continuously opened on both side edges of the shielding sheet 21. preferable. That is,
If the window 22 is continuous with both side edges of the shielding sheet 21, the strength of the shielding sheet 21 may be reduced, and
This is because, when engaging with the guide rail 4, there is a possibility that opening and closing of the window 22 may be complicated.

Further, the shield is not limited to the above-mentioned flexible sheet-shaped shield sheet 21. For example, as shown in FIG. 9, the shield is long in the left-right direction and has both side edges in the longitudinal direction. A plurality of slats 33, each of which is formed in a substantially cylindrical shape on the direction side and is bent so as to be rotatably fitted and engageable with each other, is connected to a plurality of slats 33, and a shutter 34 having a substantially flat surface on one side is shown in FIG. As described above, a connecting male portion 36 which is long in the left-right direction and is formed into a substantially cylindrical shape on one side surface in the longitudinal direction is provided, and the connecting male portion 36 is rotatably engageable on the other side surface in the longitudinal direction. A plurality of slats 38 provided with a connecting female portion 37 are connected to each other, and a shutter 39 in which both sides constitute a substantially flat surface, a rigid plate-like member such as a door body, and a shutter structure in which slats and panels are connected. , A slat or panel and a sheet-like thing may be connected

Similarly, the closing member has been described by sewing the flexible closing sheet 23. However, the closing member is not limited to sewing, but may be attached with an adhesive, attached with an adhesive tape, or riveted. Or it may be attached with eyelets. Further, not limited to the closing sheet 23, for example, using a shutter structure or a plate-like thing in which a plurality of slats and panels are connected, a thing in which a slat or a panel and a sheet-like thing are connected, and hinges and screws are used. It is not limited to the case where the upper edge portion is attached, and at least one edge portion may be attached, for example, one side is attached.

Further, although the description has been made by providing the window portion 22 on the shielding sheet 21, the window portion 22 may not be provided.

In the above description, the shielding sheet 21 is slid and moved by winding and rewinding in the winding device main body 10. However, the present invention is not limited to winding and rewinding, and any moving method may be used. It is not limited to or electric type. In addition, guide rail 4
Alternatively, rollers or the like may be provided on both side surfaces of the shield that engages with the guide rail 4 so that the shield can move smoothly.

Although the lower end of the guide rail 4 is inclined so as to be displaced toward the shielded portion 2, it may be inclined to the opposite side. In particular, when used as a smoke prevention device in the event of a fire or when there is pressure fluctuation, the lower end of the guide rail 4 is inclined so as to be displaced toward the shielded portion 2 as in the above embodiment. It is preferable to provide it.

At the lower end of the guide rail 4, there is provided a notch 7 which is open to the side so that the edge of the shielding sheet 21 communicates with the guide groove 6 so that it can be inserted.
Without providing the lower end of the shielding sheet 21 with the lower edge of the opening 3, the lower end of the shielding sheet 21 is provided with a drainage part that abuts the lower edge of the opening 3 on the surface, or the like. The guide rod 25 provided in the above may be used as a draining part, and the drained part may be in contact with the lower edge of the opening 3 to shield the shielded part 2.

Further, since the notch 7 is formed so as to open toward the shielded portion 2, for example, the floor surface 28 constituting the lower edge of the opening 3 by the weight of the leading end of the shielding sheet 21 led out through the notch 7. Since the front end portion of the shielding sheet 21 is pressed against the opening portion 3, even if the pressure in the shielded portion 2 changes, the opening 3 is substantially airtightly closed, and the shielded portion 2 is reliably shielded.

Then, in the guide groove 6 of the guide rail 4,
Since the airtight member 8 having a curved curved guide surface 8a is provided at a position facing the notch 7 toward the notch 7, the leading end of the shielding sheet 21 is guided by the guide groove 6 at the guide surface 8a of the airtight member 8. , The shield sheet 21 can be smoothly moved, and the winding and rewinding movement for opening and closing the opening 3 becomes smooth.

Although the guide rod 25 is attached to the shielding sheet 21, the member for reinforcing the shielding sheet 21 so as not to be loosened is not limited to the guide rod 25, and for example, guide rails may be provided at both ends of the shielding sheet 21. Any structure can be used, such as using a hook for the guide rail 4, or connecting the guide rail 4 and the end of the shielding sheet 21 with a chain structure such as a fastener.

Further, for example, when the width of the opening 3 in the left-right direction is narrow, the guide rod 25 may not be provided.
Not limited to books, one or a plurality of books may be used.

[0054]

According to the opening / closing device according to the first aspect, the guide rail provided with the guide groove for guiding the movement by movably engaging the both side edges of the shield at the opening of the shielded portion is provided. Since the longitudinal direction is inclined with respect to the vertical direction, both edges of the shield abut against the edge located below the guide groove of the guide rail by its own weight, so it is a simple configuration without using a separate member. The shielded portion can be shielded substantially airtightly.

According to the opening / closing device according to the second aspect, in addition to the effect of the opening / closing device according to the first aspect, a closing member that closes the window so as to be openable and closable is provided on one side facing upward from the shield. Since the closing member closes the window portion by its own weight for mounting, the shielded portion can be substantially airtightly shielded with a simple configuration without using a separate member, and by attaching at least one edge of the closing member, the mounting process is reduced. In addition to being able to reduce the size and improve the manufacturability, the degree of freedom of the closing body is improved, the window can be easily opened and closed, and the substantially airtight closing of the window can be maintained even when the window expands and contracts due to, for example, a thermal load.

According to the opening and closing device according to the third aspect, in addition to the effect of the opening and closing device according to the second aspect, since a sheet-like closing member having flexibility is used, the opening and closing device can be easily attached to the shield and can be manufactured easily. The window can be opened and closed by, for example, flexibly deforming the shield and the closing body, and the window can be easily opened and closed with a simple configuration.

According to the opening and closing device according to the fourth aspect, in addition to the effect of the opening and closing device according to any one of the first to third aspects, the lower end of the guide rail is inclined toward the shielded portion so that the guide rail is opened. For example, since the angle between the ceiling surface that defines the shielded portion and the shield is acute on the shielded portion side, the temperature of the shielded portion side increases, and the ceiling of the shielded portion due to convection and the like. Even if the pressure in the vicinity increases, the shield is pressed against one edge of the guide groove of the guide rail, and the shielded portion can be reliably shielded.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view of an opening / closing device according to an embodiment of the present invention, in which a portion of a screen device in which an opening is closed is partially cut away.

FIG. 2 is a front view in which a part is cut away.

FIG. 3 is a side sectional view showing a vicinity of a lower edge portion of the opening.

FIG. 4 is a front view showing the vicinity of a window of the shielding sheet.

FIG. 5 is a plan sectional view showing the same screen device.

FIG. 6 is a partially cutaway front view showing another embodiment of the present invention.

FIG. 7 is a side cross-sectional view showing a still further embodiment of the present invention, in which a portion of a state where an opening is closed is cut away.

FIG. 8 is a front view in which a part is cut away.

FIG. 9 is a partially cutaway side sectional view showing still another embodiment of the present invention.

FIG. 10 is a partially sectional side view showing still another embodiment of the present invention.

FIG. 11 is a side sectional view showing a conventional switching device.

FIG. 12 is a front view in which a part of the above is cut away.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Screen device as an opening / closing device 2 Shielding part 3 Opening 4 Guide rail 6 Guide groove 21 Shielding sheet as a shielding 22 Window 23 Closing sheet as an obstruction 34, 39 Shutter as an obstruction

Claims (4)

[Claims] 1. A guide rail having a pair of guide rails provided in a pair of openings substantially parallel to each other in the longitudinal direction at an angle to the vertical direction and facing each other along the longitudinal direction at an opening opening to the shielded part. And a shield that movably engages both side edges in the vertical direction with the guide groove of the guide rail and moves while being guided along these guide grooves to close the opening so that the opening can be opened and closed. Switchgear. 2. A window having an opening formed in the shield, and a closing body having at least one edge attached to one side of the shield facing upward and closing the window so that the window can be opened and closed. The switchgear according to claim 1, wherein 3. The opening / closing device according to claim 2, wherein the closing member is in the form of a sheet having flexibility. 4. The opening and closing device according to claim 1, wherein the lower end of the guide rail is inclined toward the shielded portion.