JP3511448B2 - Seat shutter device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet shutter device, for example, a device for maintaining a temperature in a building and preventing the diffusion and spread of smoke at the time of invasion of wind and dust into the building and a fire.

[0002]

2. Description of the Related Art Heretofore, as a sheet shutter device of this type, for example, a guide rail having a U-shaped cross section, which is fixed to both side portions and has an insertion opening formed in the up and down direction so as to face each other, and a guide rail of the both side portions. A take-up drum rotatably provided above the guide rails, and a take-up drum which is rewound freely so as to be rewound and lowered along the guide rail insertion openings on both sides at the time of rewinding. Sheet for shielding between the guide rails of the sheet portion, and sheets juxtaposed on one side surface of the sheet body at predetermined intervals and both end portions are respectively inserted into the insertion openings of the guide rails of the both side portions and arranged side by side. There is a configuration including a plurality of reinforcing pipes in the width direction of the body.

[0003]

In the conventional seat shutter device, a plurality of reinforcing pipes are used to prevent the sheet body from retaining its shape and coming off from the guide rail, but the sheet body is flat. Since it is made of a tailor-made material, it is easy for the sheet to move in the width direction and to be laterally displaced when it is wound around the winding drum. When the sheet body is unwound, one of both side end portions of the sheet body may be inclined or abutted strongly to the guide rail on one side, and the sheet body may not descend smoothly due to the strong contact, and a plurality of reinforcing pipes may easily occur. Both ends of the abutting contact the opposite side plate and end plate of the guide rails on both sides, and unpleasant noise such as metal collision noise and sliding noise are likely to occur, which may hinder the lifting of the seat body. Problem A.

The present invention has been made in view of the above-mentioned problems, and it is possible to wind and rewind the sheet body on the take-up drum without lateral displacement, and the sheet body is inclined at the time of winding and rewinding. It is possible to provide a seat shutter device that can be smoothly lifted up and down without causing unpleasant noise such as a metal collision sound and a sliding sound, and that both end portions of the seat body are not easily removed from the guide rail. It is intended.

[0005]

According to a first aspect of the present invention, there is provided a sheet shutter device, wherein guide rails are fixed to both side portions of a shielded portion so as to face each other, and guide rails are formed in a vertical direction, and the both side portions. Between the guide rails, which is rotatably provided, and the take-up drum, which is rewound so that it can be rewound so that both side ends in the width direction are inserted into the guide rail insertion openings on both sides. A sheet body that is inserted and lowered to land on the floor surface of the shielded portion to shield the shielded portion, the sheet body being located at an intermediate position in the width direction of the sheet body. The front surface and the back surface each have an engaging concave portion, and the other surface has a lateral deviation prevention portion in which an engaging convex portion that engages with the engaging concave portion when being wound around the winding drum is formed in a vertical direction.

When the winding drum is driven and rotated in the direction of winding the sheet body, the sheet body is sequentially wound around the peripheral surface of the winding drum, and the sheet body moves in the width direction. Both ends are guided up along the insertion holes of the guide rails on both sides, and are sequentially pulled up onto the floor surface of the shielded part, and finally the sheet body is greatly wound around the winding drum peripheral surface. As a result, the shielded portion is largely opened.

At this time, since the sheet body has a lateral deviation preventing portion in which an engaging concave portion is formed on one surface of the front and back surfaces and an engaging convex portion is formed on the other surface in the vertical direction at an intermediate position in the width direction, the sheet drum has a lateral deviation preventing portion. When the sheet body is wound around the peripheral surface, the engagement of the lateral deviation prevention portion of the sheet body to be wound next on the engaging convex portion of the lateral deviation prevention portion of the winding portion of the previously wound sheet body, for example. The sheet body is sequentially wound and rolled up while the fitting recesses are engaged.

That is, the sheet body is sequentially wound while the engaging convex portion that is wound first is used as a guide, and the engaging concave portion of the lateral deviation prevention portion that is wound next is sequentially engaged with the engaging convex portion. As a result, the sheet body is wound up on the winding drum in an orderly manner without lateral displacement so that the sheet body moves in the axial direction.

Further, since the sheet body is wound around the take-up drum without being laterally displaced and is wound up, one of both side end portions of the sheet body is inclined or abutted against one side guide rail during the winding. Therefore, the sheet body is smoothly wound around the winding drum and wound up.

Next, when the take-up drum is driven and rotated in the direction for rewinding the sheet body, the sheet bodies are successively rewound from the take-up drum, and the sheet body has both end portions in the width direction on both sides. While being guided along the insertion opening of the guide rail of the section, it is lowered.

At this time, the sheet body is rewound from a state in which the sheet body is regularly wound on the winding drum without lateral displacement, and is rewound from the engaging convex portion wound first to the engaging convex portion wound next. By rewinding the engaging concave portions of the sheet while sequentially separating, one side end portion of the sheet body does not tilt or strongly abut the one side guide rail at the time of this rewinding. The sheet body is rewound in order from the winding drum, and the sheet body is smoothly lowered.

When the lower end portion of the sheet body is landed on the floor surface of the shielded portion, the shielded portion is shielded by the sheet body. At this time, since the sheet body has a lateral deviation prevention portion in which an engaging concave portion is formed on one surface of the front and back surfaces and an engaging convex portion is formed on the other surface in the vertical direction at an intermediate position in the width direction of the sheet body. The sheet body is reinforced so as not to be easily bent even when subjected to wind pressure, and both side ends of the sheet body are prevented from being easily removed from the insertion opening of the guide rail.

The sheet shutter device according to claim 2 is
In the sheet shutter device according to the first aspect, the lateral deviation prevention portion has a plurality of vertical rows formed in parallel at a predetermined interval in the width direction of the sheet body.

When the sheet body is wound around the peripheral surface of the winding drum, a plurality of lateral deviation prevention portions of the winding portion of the previously wound sheet body, for example, next to the engaging protrusions. The sheet body is sequentially wound while the engaging recesses of the plurality of lateral deviation prevention portions of the sheet body wound around are engaged with each other.

That is, the engaging concave portions of the lateral deviation preventing portions to be wound next on the engaging convex portions of the plurality of threads are sequentially engaged with each other by using the engaging convex portions of the plurality of Articles previously wound as guides. Since the sheet bodies are sequentially and stably wound while being combined, the sheet bodies are wound around the winding drum in an orderly manner without being laterally displaced so as to move in the axial direction.

Further, since the sheet body is wound around the take-up drum without being laterally shifted and wound up, one of both side end portions of the sheet body is inclined or abutted against one side guide rail during the winding. Therefore, the sheet body is smoothly wound around the winding drum and wound up.

Next, when the take-up drum is driven and rotated in the direction for rewinding the sheet body, the sheet body is rewound from the state in which the sheet body is regularly wound without lateral displacement, and When the engaging projections of the plurality of lateral deviation prevention portions that have been previously wound are rewound while the engaging concave portions of the plurality of lateral deviation prevention portions that are wound next are sequentially separated and rewound, the sheet One of the two end portions of the body does not come into contact with the guide rail on one side at an angle or strongly, so that the sheet body is rewound in order from the take-up drum, and the sheet body descends smoothly. To be done.

When the lower end of the sheet body lands on the floor surface of the shielded portion, the shielded portion is shielded by the sheet body. At this time, the sheet body has lateral deviation prevention portions in which the engaging recesses are formed in the vertical direction on one surface of the front and back surfaces and the engaging projections are formed on the other surface in parallel with a predetermined interval in the width direction of the sheet body. , The multiple lateral offset prevention parts are reinforced so that the sheet body does not easily bend even if wind pressure is applied, and both side edges of this sheet body are prevented from easily coming off from the insertion opening of the guide rail. To be done.

The sheet shutter device according to claim 3 is
The sheet shutter device according to claim 1 or 2, wherein the sheet body has reinforcing bars integrally provided along the width direction of the sheet body, and the reinforcing bars are provided at both ends of the insertion holes of the guide rails. It has an insertion protrusion to be inserted.

When the sheet body is wound and unwound, the sheet body is sequentially wound on the take-up drum in order without being laterally offset, and is unwound from the take-up drum in order. Both ends of the sheet contact the opposite side plate portions and end plate portions of the guide rails on both sides, and no unpleasant noise such as a metal collision sound or a sliding noise is generated, and the seat body is smoothly moved up and down.

Further, when the shielded portion is shielded by the sheet body, there is a reinforcing bar integrally provided along the width direction of the sheet body, and the insertion protrusions at both ends of the reinforcing bar are the guide rails. Since it is inserted into the insertion port, the reinforcing bars are further reinforced so that the sheet body does not easily bend even if wind pressure is applied, and both end portions of the sheet body are connected to the guide rails. It is prevented from coming off easily from the insertion port.

The sheet shutter device according to claim 4 is
In the sheet shutter device according to the third aspect, the reinforcing bar includes a plurality of reinforcing bars that are integrally provided at a predetermined interval in the vertical direction of the sheet body.

When the sheet body is wound and unwound, the sheet body is sequentially wound on the take-up drum without being laterally offset, and is unwound from the take-up drum in order, so that a plurality of sheets are wound. The both ends of the reinforcing bar of the above contact the side plates and end plates of the guide rails on both sides facing each other, and no unpleasant noise such as metal collision noise or sliding noise is generated, and the seat body is smoothly moved up and down. .

Further, when the shielded portion is shielded by the sheet body, it has a plurality of reinforcing bars integrally provided along the width direction of the sheet body, and both ends of the reinforcing bars are inserted. Since the protrusions are inserted into the respective insertion openings of the guide rails, the plurality of reinforcing bars are further reinforced so that the sheet body does not easily bend even when subjected to wind pressure.
It is possible to more reliably prevent the both end portions of the sheet body from easily coming off the insertion opening of the guide rail.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

In the first embodiment shown in FIGS. 1 to 5, reference numeral 1 is a vertical guide rail which is vertically fixed in opposition to both sides of the shielded portion 2 such as an entrance, an emergency exit and a passage. The guide rails 1 on both sides are opposed to each other, and the front and rear side plate portions 4 having the vertical insertion openings 3 opened.
And an end plate portion 5, which is formed into a substantially U-shaped cross section, and the insertion port 3 is formed by bending the inner end portions of the front and rear side plate portions 4 by vertically opposing guide side pieces 6. Each is formed.

Next, a seat box 8 into which the upper end portions of the left and right guide rails 1 are inserted is fixed to a ceiling wall portion 7 such as an upper frame of the shielded portion 2, and the seat box 8 is attached to the lower end portion. Insertion ports 3 of the left and right guide rails 1
Left and right seat guide ports 9 that communicate with each other
Are formed to be open.

The seat box 8 has side plate portions 10 on the left and right sides, a bearing body 11 is attached to one of the side plate portions 10, and a bracket 12 is provided inside the other side plate portion 10.
Is attached to the bracket 12, and a motor 13 facing the bearing body 11 and capable of forward and reverse rotation is fixed.

The output shaft of the motor 13 (not shown)
One end of a rotary shaft 14 connected to the bearing body 11 is rotatably mounted on the bearing body 11, and a horizontal cylindrical winding drum 15 that rotates about the rotary shaft 14 is integrally formed on the rotary shaft 14. It is fixed. The winding drum 15 is formed with a length slightly shorter than the distance between the end plate portions 5 of the left and right guide rails 1. The winding drum 15 has an axially predetermined distance on the outer peripheral surface thereof. A plurality of annular projections 16 projecting outward from the outer peripheral surface of the winding drum 15 are integrally provided so as to project.

When the motor 13 is operated, the rotary shaft 14 is rotated and the rotary shaft 14 is rotated.
At 14, the winding drum 15 is driven and rotated in a direction of winding a sheet body described later and a direction of rewinding the sheet body. The motor 13 is, for example,
Operated by the output signal such as fire signal from the control means,
The operation is stopped by a stop signal from the control means when a weight body, which will be described later, lands on the floor surface 17 of the shielded portion 2.

Next, the upper end portion of the sheet member 18 for shielding the shielded portion 2 is fixed to the winding drum 15 and is wound so as to be rewound. The sheet body 18 is formed of a non-combustible fire resistant sheet, a non-combustible fire resistant sheet body 19 made of a non-combustible fire resistant sheet, and the non-combustible fire resistant sheet body 19 is, for example, one piece made of glass cloth, silica cloth or the like. It is made of non-combustible cloth. It should be noted that the sheet body 18 has an airtightness for preventing dust and the like from entering from the outside, and a sheet body 18 having a fireproof property provided in a fireproof compartment or the like like the noncombustible fireproof sheet body 19.

The noncombustible fireproof sheet body 19 is formed to have a predetermined width and length for rewinding from the winding drum 15 and shielding the shielded portion 2, and both side ends in the width direction thereof. Is an insertion part to be inserted into the insertion opening 3 of the left and right guide rails 1.
Each is formed as 20.

The non-combustible fireproof sheet body 19 has a plurality of annular projections formed on the winding drum 15 at predetermined intervals in the width direction of the noncombustible fireproof sheet body 19.
A series of a plurality of lateral deviation prevention portions A are formed integrally in parallel in the vertical direction at intervals corresponding to 16.
The plurality of lateral deviation prevention portions A are formed at predetermined intervals in the width direction including the widthwise intermediate position of the noncombustible fireproof sheet body 19.

The plurality of lateral deviation prevention portions A engage a series of engaging recesses 22 in the vertical direction on one surface of the front and back surfaces and engage the engaging recesses 22 on the other surface when the winding drum 15 is wound up. It is formed by having a series of engaging convex portions 21 in the vertical direction.

The upper ends of the engaging recesses 22 are fitted to the annular projections 16 of the winding drum 15, and the upper end of the noncombustible fireproof sheet body 19 is the outer periphery of the winding drum 15. When the non-combustible fireproof sheet body 19 is wound, it is fixed to the surface,
Plural rows of lateral deviation prevention portions of the nonflammable fireproof sheet body 19 which is wound next on the engaging convex portions 21 of the plural lateral deviation prevention portions A of the winding portion of the nonflammable fireproof sheet body 19 previously wound. Engagement recess 22 of A
The noncombustible fireproof sheet body 19 is sequentially wound and wound while being engaged so as to be fitted from the outside.

Next, a weight body 23 in the width direction of the noncombustible fireproof sheet body 19 which is to be landed on the floor surface 17 of the shielded portion 2 is integrally provided at the lower end of the noncombustible fireproof sheet body 19. There is. The weight body 23 is formed of a nonflammable weight body 24. This non-combustible weight body 24 is a non-combustible fire-resistant sheet body formed of non-combustible fire-resistant fabric or the like integrally fixed to the lower end of the non-combustible fire-resistant sheet body 19 by a fixing means such as non-combustible sewing thread. 19
Of the bag-shaped body 25 in the width direction, and a non-combustible rod-shaped body 26 inserted into the bag-shaped body 25, and formed by the non-combustible rod-shaped body.
Both ends of 26 are formed as insertion protrusions 27 inserted into the insertion openings 3 of the guide rails 1 on both sides.

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

When the shielded portion 2 is opened, when the rotary shaft 14 is driven and rotated by the output from the motor 13 in the direction in which the sheet body 18, that is, the noncombustible refractory sheet body 19 is wound, the winding drum is wound. Noncombustible fireproof sheet body 19 is sequentially wound around the outer peripheral surface of 15, and incombustible fireproof sheet body 19 has insertion portions 20 at both end portions in the width direction along insertion openings 3 of guide rails 1 at both sides. While being guided respectively, they are sequentially pulled up onto the floor surface 17 of the shielded portion 2, and finally the non-combustible refractory sheet body 19 is largely wound around the outer peripheral surface of the winding drum 15 to be wound up, thereby being shielded. The part 2 is largely opened.

At this time, the non-combustible fireproof sheet body 19 is provided with a series of engaging recesses 22 on one side of the front and back surfaces in parallel with each other at a predetermined interval in the width direction of the nonflammable fireproof sheet body 19, and the like. Since the winding drum 15 has a plurality of lateral deviation prevention portions A each having a series of engaging convex portions 21 formed in the vertical direction, which engage with the engaging concave portions 22 when being wound up on the winding drum 15, When the nonflammable fireproof sheet body 19 is wound around the outer peripheral surface,
Plural rows of lateral deviation prevention portions of the nonflammable fireproof sheet body 19 which is wound next on the engaging convex portions 21 of the plural lateral deviation prevention portions A of the winding portion of the nonflammable fireproof sheet body 19 previously wound. Engagement recess 22 of A
The noncombustible refractory sheet body 19 is sequentially wound while engaging so as to fit from the outside.

That is, the plurality of engaging projections 21 wound previously are used as guides, and the plurality of engaging recesses 22 wound next to the plurality of engaging projections 21 are respectively provided from the outside. The noncombustible fireproof sheet body 19 is sequentially wound while being sequentially engaged and wound up, so that the nonflammable fireproof sheet body 19 is wound on the winding drum 15 in an orderly manner without lateral displacement so as to move in the axial direction. Be rolled up.

Further, the winding drum 15 has a non-combustible fireproof sheet body.
Since 19 is rolled up and rolled up without being laterally displaced, one of the insertion portions 20 at both end portions of the noncombustible fireproof sheet body 19 tilts or strongly abuts the guide rail 1 on one side during the winding. Therefore, the noncombustible fireproof sheet body 19 is smoothly wound around the winding drum 15 and wound up.

Next, when the shielded portion 2 is shielded, for example, when the motor 13 is activated by a fire signal from the control means during a fire that shields the shielded portion 2, the output from the motor 13 causes the rotary shaft to rotate. 14 is driven and rotated in a direction to rewind the sheet body 18, that is, the noncombustible fireproof sheet body 19, and the noncombustible fireproof sheet body 19 is sequentially rewound from the winding drum 15 of the rotating shaft 14.

Then, both insertion portions of the noncombustible fireproof sheet body 19
20 are respectively guided and lowered along the insertion openings 3 of the left and right guide rails 1, and the nonflammable fireproof sheet body 19
The weight body 23 at the lower end portion of the non-combustible weight body 24, that is, both insertion protrusions 27 of the non-combustible weight body 24 are respectively guided along the insertion openings 3 of the left and right guide rails 1 and quickly Is lowered to.

At this time, the non-combustible fireproof sheet body 19 is rewound from the winding drum 15 in an orderly winding state without being laterally displaced, and is engaged by the plurality of laterally lateral deviation preventing portions A previously wound. The non-combustible fireproof sheet body 19 is smoothly rewound and lowered by rewinding the engaging recesses 22 of the plurality of lateral deviation prevention portions A that are wound next from the combined convex portion 21 while being sequentially separated.

At the time of rewinding, one of the insertion portions 20 at both end portions of the nonflammable fireproof sheet body 19 and the nonflammable weight body 24.
One of the insertion protrusions 27 at both ends of the guide rail 1
The side plate portion 4 and the end plate portion 5 of the sheet do not come into contact with the side plate portion 4 and the end plate portion 5 incliningly or strongly, and therefore, the nonflammable fireproof sheet body
The non-combustible refractory sheet body 19 is smoothly lowered by rewinding the non-flammable sheet material 19 in order from the winding drum 15.

Further, when the noncombustible weight body 24 at the lower end portion of the noncombustible fireproof sheet body 19 lands on the floor surface 17 of the shielded portion 2, the noncombustible fireproof sheet body 19 and the noncombustible weight body Body 24
The shielded portion 2 is shielded by.

At this time, the non-combustible fireproof sheet body 19 is provided with a series of engaging recesses 22 vertically on one surface of the front and back surfaces in parallel with each other at a predetermined interval in the width direction of the nonflammable fireproof sheet body 19. Since a plurality of lateral deviation preventing portions A each having a series of engaging convex portions 21 formed in the up-down direction and engaging with the engaging concave portions 22 at the time of winding the winding drum 15 on the winding drum 15 are formed, the lateral deviation preventing portions A are prevented. Non-combustible fireproof sheet body 19 is reinforced in part A,
This noncombustible fireproof sheet body 19 is reinforced so as not to be easily bent even when subjected to wind pressure, for example, hot air, and the insertion portions 20 at both end portions of this noncombustible fireproof sheet body 19 are guides at both sides. It is prevented that the rail 1 is easily removed from the insertion opening 3.

The non-combustible fireproof sheet body 19 is a winding drum.
By being rewound in an orderly manner from 15, both insertion protrusions of the noncombustible weight body 24 at the lower end of the noncombustible fireproof sheet body 19
One of the two 27 does not contact the side plate portion 4 and the end plate portion 5 of the guide rail 1 on one side incliningly or strongly, and the non-combustible rod-shaped body 26 of the non-combustible weight body 24 is By being covered with the bag-shaped body 25, the bag is lowered without generating unpleasant noise such as metal collision noise.

The non-combustible weight body 24 is used as the shielded portion 2
The operation of the motor 13 is stopped at the time of landing on the floor surface 17 of the vehicle, but at this time, both insertion protrusions 27 of the nonflammable weight body 24 are still inserted into the insertion openings 3 of the guide rails 1 on both sides. Therefore, even if the non-combustible fireproof sheet body 19 is blown by wind pressure, for example, hot air or the like, the lower end portion of the noncombustible fireproof sheet body 19 does not bend, and the nonflammable weight body 24 is used. Both insertion protrusions 27 of the nonflammable weight body 24 that are supported are prevented from coming off from the insertion openings 3 of the guide rails 1 on both sides.

Therefore, when the noncombustible weight body 24 at the lower end of the noncombustible fireproof sheet body 19 lands on the floor surface 17 of the shielded portion 2, the noncombustible fireproof sheet body 19 and the noncombustible weight body body are
At 24, the shielded portion 2 is reliably shielded over the entire surface, and hot air, dust, and the like are reliably prevented from flowing in and out.

Next, in the first embodiment, the sheet body 18, that is, the non-combustible refractory sheet body 19 is provided with a predetermined interval in the width direction parallel to one surface of the front and back surfaces in a series of vertical movements. In the case where the mating concave portion 22 is provided with a plurality of lateral deviation preventing portions A on the other surface, each of which is formed with a series of engaging convex portions 21 in the vertical direction that engages with the engaging concave portion 22 when being wound up on the winding drum 15 Although described above, the invention is not limited to this, and the engagement recess 22 is formed on one surface of the front and back surfaces, and the engagement protrusion 21 is formed on the other surface that engages with the engagement recess 22 when the winding drum 15 is wound up. The prevention portion A may be formed at least at one of the intermediate positions in the width direction of the sheet body 18, that is, the noncombustible fireproof sheet body 19.

In the first embodiment, the case where the engagement recess 22 of the lateral deviation prevention portion A is opened on the back surface side of the winding drum 15 at the time of winding has been described, but the invention is not limited to this. The engagement concave portion 22 of the prevention portion A may be opened on the surface side of the winding drum 15 at the time of winding. In this case, the winding drum 15 is formed with an annular recess for fitting the upper end of the engagement recess 22 instead of the annular projection 16.

With this structure, when the non-combustible fireproof sheet body 19 is wound around the winding drum 15, the plurality of windings of the winding portion of the nonflammable fireproof sheet body 19 previously wound. The non-combustible fire-resistant sheet body 19 is sequentially wound while the plural engaging projections 21 of the non-combustible fire-resistant sheet body 19 to be wound next in the fitting concave portion 22 are engaged so as to be fitted from the outside, respectively. . Therefore, the noncombustible fireproof sheet body 19 is wound in an orderly manner without lateral displacement as in the case of the first embodiment.
Further, even when the non-combustible fireproof sheet body 19 is rewound, it is rewound in an orderly manner without lateral displacement as in the case of the first embodiment.

Next, the second embodiment shown in FIGS. 6 to 10 is the same as the first embodiment shown in FIGS. 1 to 5 except that the sheet body 18, that is, the non-combustible fireproof sheet body 19 is provided. A plurality of lateral non-flammable fireproof sheet members 19 are formed on the opening side of the engagement recesses 22 of the lateral deviation prevention portions A formed on the nonflammable fireproof sheet member 19 with a predetermined interval in the vertical direction. The reinforcing bars 28 of a book are integrally provided in parallel.

The plurality of reinforcing bars 28 are the winding drums.
The reinforcing bars 28 are integrally provided on the non-combustible fireproof sheet body 19 at intervals such that the reinforcing bars 28 do not overlap each other when wound around 15. That is, the plurality of reinforcing bars 28 are formed of noncombustible fireproof fabric or the like integrally fixed to the noncombustible fireproof sheet body 19 by a fixing means such as noncombustible sewing thread. Of the bag-shaped body 29 in the width direction, and a non-combustible rod-shaped core 30 inserted into the bag-shaped body 29, and both ends of the non-combustible rod-shaped core 30 are guide rails on both sides. Each of them is formed as an insertion protrusion 31 that is inserted into the insertion opening 3 of No. 1.

The other structure is the same as that of the first embodiment shown in FIGS. 1 to 5, and therefore the same structure is used for the structure of the first embodiment shown in FIGS. 1 to 5. The same reference numeral is entered and the description is omitted.

With this structure, when the non-combustible fireproof sheet body 19 is wound around the outer peripheral surface of the winding drum 15 when the shielded portion 2 is opened, the plurality of previously wound strips 15 are wound. Using the engaging projections 21 of the lateral deviation prevention portion A as guides, the engaging concave portions 22 of the lateral deviation preventing portions A that are wound around the plural engaging projections 21 are sequentially engaged from the outside. Meanwhile, the noncombustible refractory sheet body 19 is sequentially wound and rolled up.

At this time, when the reinforcing bar 28 is located at the winding portion around the winding drum 15, the reinforcing bar 28 abuts on the plurality of engaging projections 21 wound previously, and the plurality of engaging parts are engaged. The nonflammable fireproof sheet body 19 is wound through the convex portions 21, and the nonflammable fireproof sheet body 19 has passed over the engaging convex portions 21 having a plurality of lines.
The non-combustible fireproof sheet body 19 is wound by engaging the plurality of engagement recesses 22 of the above with the plurality of engagement projections 21 previously wound, from the outside.

That is, the plurality of reinforcing bars 28 are winding drums.
Since the reinforcing bars 28 are integrally provided on the non-combustible fireproof sheet body 19 at intervals such that the reinforcing bars 28 do not overlap each other when wound around the winding part 15, the engaging projections 21 and the engaging recesses are provided except for the portion where the reinforcing bars 28 are located. The non-combustible fireproof sheet body 19 is sequentially wound around the winding drum 15 while being engaged with each other. Therefore, the winding drum 15
The non-combustible refractory sheet body 19 is wound up and rolled up in an orderly manner without lateral displacement so as to move in the axial direction.

Further, the winding drum 15 has a nonflammable fireproof sheet body.
By winding and winding 19 without lateral displacement, one of the insertion portions 20 at both end portions of the noncombustible fireproof sheet body 19 and one of both insertion protrusions 31 of the plurality of reinforcing bars 28 at the time of winding. The guide rail 1 on one side does not tilt or come into strong contact with the guide rail 1. Therefore, the noncombustible fireproof sheet body 19 is smoothly wound around the winding drum 15 and wound up.

Next, when the shielded portion 2 is shielded, the rotary shaft 14 is driven and rotated in the direction to rewind the sheet body 18, that is, the noncombustible refractory sheet body 19, so that the rotary shaft 14 is rotated.
The non-combustible fireproof sheet body 19 is sequentially rewound from the winding drum 15 of FIG.

Both insertion parts of the non-combustible fireproof sheet body 19
Both of the insertion projections 31 of the 20 and the plurality of reinforcing bars 28 are guided and lowered along the insertion openings 3 of the left and right guide rails 1, respectively, and the weight body at the lower end of the noncombustible fireproof sheet body 19 is provided.
That is, the two insertion protrusions 27 of the non-combustible weight body 24 are guided along the insertion openings 3 of the left and right guide rails 1 and quickly lowered by the weight of the non-combustible weight body 24.

At this time, the noncombustible fireproof sheet body 19 is unwound from the winding drum 15 in an orderly wound state without being laterally displaced, and is rewound from the previously wound plural engaging projections 21. Next, the plurality of engaging recesses 22 wound around are sequentially rewound while being separated from each other, so that the non-combustible fireproof sheet body 19
Is smoothly rewound and lowered.

At the time of this rewinding, one of the insertion portions 20 at both end portions of the noncombustible fireproof sheet body 19 and a plurality of reinforcing bars are provided.
One of the two insertion protrusions 31 of 28 and one of the insertion protrusions 27 at both ends of the nonflammable weight body 24 slantly contact or strongly contact the side plate portion 4 and the end plate portion 5 of the guide rail 1 on one side. Therefore, the noncombustible fireproof sheet body 19 is rewound in order from the winding drum 15, and the noncombustible fireproof sheet body 19 is smoothly lowered.

Further, the non-combustible weight body 24 at the lower end of the non-combustible fire resistant sheet body 19 lands on the floor surface 17 of the shielded portion 2 and the non-combustible fire resistant sheet body 19 and the non-combustible weight body 24. When the shielded portion 2 is shielded by, the non-combustible fireproof sheet body 19 has the engaging recesses 22 on one surface of the front and back surfaces and the winding drum on the other surface in parallel with a predetermined interval in the width direction. 15 has a plurality of lateral deviation preventing portions A each having an engaging convex portion 21 that engages with the engaging concave portion 22 from the outside at the time of winding, and both insertion protrusions are provided at the insertion openings 3 of the guide rails 1 on both sides. Since there are a plurality of reinforcing bars 28 into which 31 are inserted, the plurality of engaging protrusions
The noncombustible fireproof sheet body 19 is reinforced by 21 and a plurality of reinforcing bars 28, and the noncombustible fireproof sheet body 19 is further strongly reinforced so as not to be easily bent even when subjected to wind pressure, for example, hot air. , The inserts on both sides of this non-combustible fireproof sheet body 19
It is prevented that the 20 is easily removed from the insertion openings 3 of the guide rails 1 on both sides.

The plurality of reinforcing bars 28 are formed by a bag-shaped body 29 and a non-combustible rod-shaped core 30 inserted into the bag-shaped body 29. The non-combustible rod-shaped core 30 is covered with the bag-shaped body 29. By doing so, the user can descend without causing any unpleasant sound such as a metal collision sound.

Therefore, when the noncombustible weight body 24 at the lower end of the noncombustible fireproof sheet body 19 lands on the floor surface 17 of the shielded portion 2, the noncombustible fireproof sheet body 19 and the noncombustible weight body body are provided.
Since the shielded portion 2 is completely shielded by 24 and the nonflammable fireproof sheet body 19 is reinforced by a plurality of reinforcing bars 28, the nonflammable fireproof sheet body 19 is It does not greatly bend under the influence of hot air or the like, and the insertion portions 20 at both end portions of the noncombustible fireproof sheet body 19 do not easily come off from the insertion openings 3 of the guide rails 1 at both sides, so that hot air, dust, etc. Inflow and outflow is surely prevented.

Next, in the first and second embodiments, the sheet member 18 has a plurality of vertical strips in which the engaging concave portions 22 are formed on one surface of the front and back surfaces and the engaging convex portions 21 are formed on the other surface. When the lateral slip prevention portion A is provided, that is, the engagement recess 22 is formed in the sheet body 18.
The case where the plurality of lateral deviation prevention portions A having the engagement convex portions 21 are integrally formed has been described, but the invention is not limited to this, and the lateral deviation prevention portion A may be formed on the sheet body 18 by using the lateral deviation prevention member 32. You may

In this case (third embodiment), for example, as shown in FIG. 11, the lateral deviation prevention member 32 is formed in a predetermined width to form the engaging projection 21 on the sheet 18 in the vertical direction. The vertical plate portion 33 and the inclined side plate portion 34 which is formed on both side edges of the vertical plate portion 33 in the width direction and which is projected so as to spread and incline toward the direction away from each other to form the engaging concave portion 22 in the sheet body 18.
And the engaging recesses 22 formed on the projecting ends of the inclined side plate portions 34 on both sides and projecting in the opposite directions to each other.
And a side plate portion 35 in the width direction of the sheet body 18 that forms the.

However, the lateral deviation prevention member 32 has a higher rigidity than the sheet body 18, and the sheet body 18 is wound on the winding drum.
When it is wound around the winding drum 15, the winding drum 15 is rewound so that it can be freely rewound and is flexible so that it can be restored. For example, it is integrally formed of soft synthetic resin or the like.

Further, the lateral deviation prevention members 32 are arranged on one of the front and back surfaces of the sheet body 18 at predetermined intervals in the width direction of the sheet body 18, and these lateral deviation prevention members are arranged.
32 vertical plate parts 33, both inclined side plate parts 34 and both side plate parts
Sheet body 18 through adhesive 36 along the surface (outer surface) of 35
To be fixed together.

As a result, a series of engaging recesses 22 are formed in the up-down direction by the inclined side plate portions 34 on both sides and the side plate portions 35 on both sides on one side of the front and back surfaces of the sheet body 18, and the vertical plate on the other side. The part 33 forms a series of vertical engaging projections 21 that engage with the engaging recesses 22 when wound around the winding drum 15. Other configurations are the same as those in the above-mentioned respective embodiments.

With this construction, when the sheet body 18 is wound around the winding drum 15, the engaging projection 21 of the sheet body 18 and the engaging recess 22 of the lateral deviation prevention member 32 are engaged with each other. The sheets are wound on the winding drum 15 while they fit together.
Is wound up and wound up in order without being laterally displaced as it moves in the axial direction.

At this time, the lateral deviation prevention member 32 is the winding drum 15
Since it has a flexibility such that it can be rewound freely and can be restored, it is wound around the winding drum 15 together with the sheet body 18 in an orderly manner.

In addition, in the third embodiment, the sheet member 18 is provided along the surfaces of the vertical plate portion 33, the inclined side plate portions 34 on both sides and the side plate portions 35 on both sides of the lateral deviation prevention member 32 via the adhesive 36.
However, the present invention is not limited to this, and the vertical plate portion 33 of the lateral deviation prevention member 32 and the inclined side plate portions on both sides are not limited to this.
Adhesive 36 along the back surface (inside surface) of 34 and the side plate portions 35 on both sides
The sheet body 18 may be integrally fixed via the.

Next, in the third embodiment, the lateral deviation prevention member 32 has been described as having a series of the inclined side plate portions 34 on both sides and the side plate portions 35 on both sides in the vertical direction. However, the present invention is not limited to this. The inclined side plate portions 34 on both sides and the side plate portions 35 on both sides may be formed intermittently.

In this case (fourth embodiment), for example, as shown in FIG. 12, through the notches 37 formed at predetermined intervals at both side edges of the vertical plate portion 33 in the width direction. The inclined side plate portions 34 on both sides and the side plate portions 35 on both sides are each intermittently formed. Other configurations are the same as those in the above-mentioned respective embodiments.

With this configuration, when the sheet body 18 is wound around the winding drum 15, the engaging concave portion 22 of the sheet body 18 and the engaging convex portion 21 of the lateral deviation preventing member 32 are engaged with each other. The sheets are wound on the winding drum 15 while they fit together.
Is wound up and wound up in order without being laterally displaced as it moves in the axial direction.

At this time, since the lateral deviation prevention member 32 has the flexibility of being rewound freely on the winding drum 15 and capable of being restored, as in the case of the third embodiment, the winding drum is prevented. When wound around 15, the lateral deviation prevention member 32 is easily wound and deformed at each notch 37, and the lateral deviation prevention member 32 is neatly wound around the winding drum 15 together with the sheet body 18.

In the third and fourth embodiments, the lateral deviation prevention member 32 is integrally formed of soft synthetic resin or the like, but the lateral deviation prevention member 32 is not limited to this. The member 32 may be a flexible member that can be rewound around the winding drum 15 and can be restored. Further, in the third embodiment and the fourth embodiment, the case where the sheet body 18 and the lateral deviation prevention member 32 are integrally fixed with the adhesive has been described, but the present invention is not limited to this, and the sheet body 18 is not limited thereto. The lateral deviation prevention member 32 may be fixed to each other by a fixing tool such as a screw.

[0081]

According to the first aspect of the present invention, the sheet body engages with the engaging concave portion on one side of the front and back surfaces at the intermediate position in the width direction and the engaging concave portion on the other side of the winding drum when the sheet body is wound up. Since each of the engaging protrusions has a lateral deviation prevention portion formed in the vertical direction, when the sheet body is wound around the peripheral surface of the winding drum,
The sheet body is sequentially wound while the engaging convex portion of the lateral deviation preventing portion of the winding portion of the previously wound sheet body is engaged with the engaging concave portion of the lateral deviation preventing portion of the sheet body to be wound next. That is, the sheet body is sequentially wound while the previously wound, for example, engaging convex portion is used as a guide and the engaging concave portion which is wound next is sequentially engaged with this engaging convex portion. The sheet body can be wound up and wound up on the winding drum in an orderly manner without being laterally displaced so as to move in the axial direction.

Further, since the sheet body is wound around the winding drum without being laterally displaced and wound up, one of both side end portions of the sheet body is inclined or abutted against one side guide rail or strongly hits during this winding. Therefore, the sheet body can be smoothly wound around the winding drum and wound up.

Further, when the sheet body is rewound, the sheet body is rewound from an orderly wound state without lateral displacement on the take-up drum, and is wound next from the previously wound engaging convex portion. By rewinding the turned engagement recesses while sequentially separating, one of both side end portions of the sheet body does not slantly abut or strongly abut the one guide rail at the time of rewinding, Therefore, the sheet body is rewound in order from the winding drum and can be smoothly lowered.

Further, when the shielded portion is shielded by the sheet body, the sheet body has an engaging recessed portion on one side of the front and back surfaces at an intermediate position in the width direction and the engaging recessed portion on the other side when wound up on the winding drum. Since there is a lateral deviation prevention portion in which engaging convex portions that engage with each other are formed in the vertical direction, the lateral deviation prevention portion can reinforce so that the sheet body does not easily bend even if wind pressure is applied. It is possible to prevent both end portions of the body from coming off from the insertion opening of the guide rail.

Therefore, it is possible to provide a sheet shutter device capable of orderly winding and rewinding the sheet body on the take-up drum without lateral displacement and smoothly elevating the sheet body without tilting at the time of winding and rewinding. it can.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the lateral deviation prevention portion has a plurality of rows at predetermined intervals in the width direction of the sheet body, the lateral deviation prevention of these plural articles is prevented. Part, the sheet body can be wound and rewound in a more stable state without being laterally displaced on the take-up drum, and the sheet body can be securely prevented from tilting during the winding and rewinding of the sheet body. The sheet body can be smoothly raised and lowered, and when the shielded portion is shielded, the sheet body is prevented from easily bending even if wind pressure is applied by the plurality of lateral deviation prevention portions formed at predetermined intervals. Further, it is possible to further reinforce, and it is possible to more reliably prevent both side end portions of the sheet body from coming off from the guide rail insertion opening.

According to the third aspect of the invention, in addition to the effect of the first or second aspect of the invention, the sheet body is integrally provided along the width direction and the both ends of the insertion protrusion are inserted into the insertion opening of the guide rail. Since it has a reinforcing bar that forms a sheet, when the sheet body is wound and unwound, the sheet body is sequentially wound around the winding drum without being laterally displaced, and is unwound in order from the winding drum. This prevents the insertion protrusions at both ends of the reinforcing bar from coming into contact with the opposite side plate portions and end plate portions of the guide rails at both side portions and causing no unpleasant noise such as metal collision noise or sliding noise. You can move up and down smoothly.

Further, when the shielded portion is shielded by the sheet body, there is a reinforcing bar integrally provided along the width direction of the sheet body, and the insertion protrusions at both ends of the reinforcing bar are the guide rails. Since it is inserted into the insertion port, the reinforcing bars are further reinforced so that the sheet body does not easily bend even if wind pressure is applied, and both end portions of the sheet body are connected to the guide rails. It can be securely prevented from coming off easily from the insertion opening.

According to the invention of claim 4, in addition to the effect of the invention of claim 3, the sheet body has a plurality of reinforcing bars integrally provided along the width direction at a predetermined interval in the vertical direction. Therefore, when the shielded portion is shielded by the sheet body, the insertion protrusions at both ends of the plurality of reinforcing bars are inserted into the insertion openings of the guide rails. The reinforcing bars ensure that the sheet body will not be easily bent even when subjected to wind pressure, and that both side edges of this sheet body will be easily removed from the guide rail insertion opening. It can be prevented.

[Brief description of drawings]

FIG. 1 is a front view of a sheet shutter device according to a first embodiment of the present invention.

FIG. 2 is an enlarged transverse plan view of a part of the above sheet body.

FIG. 3 is an enlarged side view of a part of the same sheet body.

FIG. 4 is a side view of the above sheet shutter device.

FIG. 5 is a side view showing a wound state of the same sheet body.

FIG. 6 is a front view of a sheet shutter device according to a second embodiment of the present invention.

FIG. 7 is an enlarged cross-sectional plan view of a part of the same sheet body.

FIG. 8 is an enlarged side view of a part of the above sheet body.

FIG. 9 is a side view of the above sheet shutter device.

FIG. 10 is a side view showing the wound state of the above sheet body.

FIG. 11 is an explanatory end view of a part of the sheet body showing the third embodiment of the invention.

FIG. 12 is an explanatory perspective view of a part of a sheet body showing a fourth embodiment of the present invention.

[Explanation of symbols] 1 Guide rail 2 Shielded part 3 insertion slot 15 winding drum 17 floor 18 sheet body 21 Engagement protrusion 22 Engagement recess 28 Reinforcing bar 31 Insert protrusion A Side slip prevention unit

Claims (4)

(57) [Claims] 1. A guide rail, which is fixed to both sides of a shielded portion so as to face each other and has an insertion opening formed in a vertical direction so as to face each other, and a winding rotatably provided above the guide rails on both sides. The take-up drum and the take-up drum are rewound freely, and at the time of rewinding, both side ends in the width direction are inserted into the insertion openings of the guide rails on the both sides to descend, and the lower end is the floor of the shielded part. And a sheet body for landing on the surface to shield the shielded portion, wherein the sheet body has an engaging concave portion on one surface of the front and back surfaces at the intermediate position in the width direction of the sheet body and the other surface. A sheet shutter device, comprising: a lateral shift prevention portion in which engaging projections that engage with the engaging recesses when being wound up on the take-up drum are formed in the vertical direction. 2. The sheet shutter device according to claim 1, wherein the lateral deviation prevention portion has a plurality of vertical rows formed in parallel at predetermined intervals in the width direction of the sheet body. 3. The sheet body has reinforcing bars integrally provided along the width direction of the sheet body, and the reinforcing bars have insertion protrusions at both ends for insertion into the insertion ports of the guide rails. The sheet shutter device according to claim 1 or 2, wherein: 4. The sheet shutter device according to claim 3, wherein the reinforcing bar includes a plurality of reinforcing bars integrally provided at a predetermined interval in the vertical direction of the sheet body.