JP2000008739A - Safety device for fire shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety device for a fire shutter, preventing an accident of a person being caught in, with simple structure and fittable at a low cost only by performing simple appurtenant work to the fire shutter regardless of the existing or new tire shutter. SOLUTION: A guide rail 3 of a fire shutter is provided with a stopper 10 for stopping the fire shutter above an installation face, and the lower end of the fire shutter is provided with a fire preventive sliding plate 9. This fire preventive sliding plate 9 displays fire preventive function together with the fire shutter while the fire shutter is closed, but moves upward to take refuge when a person is caught in during the descent of the fire shutter, so as to leave a gap between the fire shutter and the installation face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof shutter used in commercial buildings, schools, hospitals, factories, and other buildings and facilities, and more particularly to a fireproof shutter for preventing a person from being caught in the fireproof shutter. Related to safety devices.

[0002]

2. Description of the Related Art In recent years, fire prevention shutters have been widely used as countermeasures against fire in commercial buildings, schools, and the like. The conventional fireproof shutter is wound up when it is released, is restrained by a brake, and is stored.
The structure is such that the shutter is lowered and closed by its own weight by releasing the restraint of the brake.

[0003] However, recently, a serious accident has occurred in which a child is laid under the fireproof shutter which has been dropped due to malfunction and the child is crushed by the load, and a review of the safety of the fireproof shutter has become a social problem. I have. As a safety measure, it is designed so that the fireproof shutter does not fall down except during a fire or inspection, but if there is a person directly under the fireproof shutter when the fireproof shutter falls, it should be optically Means such as emergency detection and emergency braking are considered. However, for this purpose, an optical detection device and a control device for controlling the brake are required, and the construction is complicated, so that the equipment cost is reduced regardless of whether a new fireproof shutter is installed or if it is attached to an existing fireproof shutter. Get higher. Moreover, the use of an optical or electrical detection device or control device does not mean that there is no danger of malfunction or the like.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and can be attached to an existing or newly installed fireproof shutter simply by performing simple additional work. An object of the present invention is to provide a low-cost safety device for a fireproof shutter having a simple structure.

Specifically, a stopper is provided on the guide rail of the fireproof shutter to stop the fireproof shutter with a gap between the fireproof shutter and an installation surface, or the fireproof shutter is formed so as to be closed with a gap left. At the lower end of the fireproof shutter, a fireproof slide plate or a non-combustible sheet is provided as a fireproof auxiliary member, and when the fireproof shutter is closed, it becomes a part of the fireproof shutter and performs a fireproof function. An object of the present invention is to realize a safety device for a fire shutter that prevents an accident by sliding upward or retreating and leaving a gap between the fire shutter and the installation surface.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a fire-prevention auxiliary member attached to a lower end of a fire-prevention shutter so as to extend downward, and is fixed to a guide rail of the fire-prevention shutter. A safety device for a fire-retardant shutter, comprising: a stopper, wherein the fire-protection auxiliary member can be lifted upward relative to the fire-retardant shutter, and when closing the fire-retardant shutter, When the stopper comes into contact with a part of the fireproof shutter and stops so that the fireproof shutter does not come into contact with the installation surface, when the fireproof shutter is stopped, if there is no person directly below the fireproof shutter, the fireproof auxiliary is stopped. The member is closed for fire prevention by abutting on the installation surface, and when there is a person, the fire-prevention auxiliary member is brought into contact with the person to prevent the fire. Lifted relatively upwards retracted relative data, to provide a safety device for a fire shutter, characterized in that not be subjected to loads of fire shutter to said person.

[0007] When the fireproof shutter is closed, a part of the fireproof shutter that the stopper comes into contact with may be a lowermost slat of a plurality of slats connected to each other.

In order to solve the above-mentioned problems, the present invention is a safety device for a fire prevention shutter comprising a fire prevention auxiliary member. Attached to a fireproof shutter having dimensions to be left, can be lifted relatively to the fireproof shutter, and when the fireproof shutter is closed,
When there is no person directly below the fire prevention shutter, the fire prevention auxiliary member abuts on the installation surface, thereby closing for fire prevention.When there is a person, the fire prevention auxiliary member is connected to the fire prevention shutter. A safety device for a fireproof shutter, characterized in that the safety device is moved upward and retreated to prevent the load of the fireproof shutter from being applied to the person.

The fire prevention auxiliary member in the present invention is a fire prevention slide plate. The fire prevention slide plate has an elongated hole formed in a vertical direction, and a lower end portion of the fire prevention shutter is formed by a support rod extending through the elongated hole. And may be configured to be vertically movable relative to the fire shutter within the range of the elongated hole.

The fire-resistant slide plate is formed from a bottom portion and both side portions, has a U-shaped cross section, and the elongated holes are formed on each of the both side portions.
The support rod extending through the long hole may be attached to a seat plate at the lower end of the fireproof shutter, and may be configured to be movable up and down so as to sandwich the seatplate and the fireproof shutter.

Further, the fire prevention auxiliary member of the present invention may be formed of a non-combustible sheet which can be freely deformed like a cloth.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on embodiments with reference to the drawings. 1 to 3 illustrate a first embodiment of a safety device for a fireproof shutter according to the present invention. FIG. 1A shows a state in which the fireproof shutter provided with the safety device of the present invention is slightly opened. The fireproof shutter includes a shutter curtain 2 in which a plurality of slats 1 are connected in the vertical direction.

As shown in FIGS. 1 (a) and 3 (a) and 3 (b), both ends of the slat 1 are slidably fitted in a concave groove 4 of a pair of guide rails 3 having a concave cross section. And
Thereby, it is guided up and down and moves up and down. As shown in FIG. 1B, a seat plate 6 is fixed to the lowermost slat 5 along its longitudinal direction with screws 7. Seat plate 6
Is shorter than the interval between the pair of guide rails 3.

In normal times, not when fires or inspections,
The fireproof shutter is open, and the shutter curtain 2 is wound into a shutter box 8 disposed above and is restrained by a brake so that the shutter curtain 2 does not descend. When checking the raising and lowering of the shutter during normal inspection, or when a fire occurs and the smoke is detected by a smoke detector or heat is detected by a heat detector, the restraint by the brake is released. The shutter curtain 2 is lowered by its own weight, and the fireproof shutter is closed.

Although such a structure is a conventionally known structure of a fireproof shutter, the present invention is characterized by a safety device that can be attached to such a structure of the fireproof shutter. This safety device includes a fire prevention slide plate 9 as a fire prevention auxiliary member attached to the lower end of the shutter curtain 2 and a stopper 10 fixed in the concave groove 4 of the pair of guide rails 3.

The fireproof slide plate 9 is formed by bending a single rectangular refractory metal plate into a U-shaped cross section, and has a bottom portion 11 and both side portions 12. The width in the longitudinal horizontal direction of the fire prevention slide plate 9 is formed to be slightly smaller than the interval between the pair of guide rails 3. On the other hand, the vertical width of the fire prevention slide plate 9 is preferably as small as possible so as to be housed in the box 8, but a certain width is necessary in consideration of a safety prevention function described later. For example, it is formed in a width (for example, 30 cm) that does not cause any trouble even if a child is sandwiched.

At both ends of the slide plate 9 in the horizontal direction,
A long hole 13 penetrating each of the side portions 12 is formed in the up-down direction. As shown in FIG. 3, the fireproof slide plate 9 is
It is arranged so that the seat plate 6 is sandwiched between the both side portions 12,
The support rod 14 is passed through the long hole 13, and the fire prevention slide plate 9 is attached to the seat plate 6. At both ends of the support rod 14, retaining heads 15 are fixed. Of course, it may be attached with a bolt and a nut instead of the support rod.

The supporting rod 14 is a slot 1 of the fire prevention slide plate 9.
3 is mounted so as to be movable in FIG.
As shown in (b) and (c), the fire prevention slide plate 9 can slide vertically with respect to the seat plate 6 and the shutter curtain. As the material of the fire prevention slide plate 9, the same material as that of the slat 1 may be used, or a material having higher fire resistance may be used. Alternatively, a refractory material may be applied to or adhered to the fireproof slide plate 9.

In the groove 4 of the pair of guide rails 3, FIG.
As shown in (a) and (c), the stopper 10 is fixed by welding or fixing means such as a bolt. When the stopper 10 is attached by a bolt, a plurality of screw holes or long holes may be formed in the guide rail so that the attachment height can be adjusted. The height h of the mounting position from the installation surface S (the surface on which the guide rail is installed, for example, the floor surface of the building) to the upper surface of the stopper 10 is substantially equal to the vertical width of the fire prevention slide plate 9. I do. Both ends of the lowermost slat 5 descending from above are fitted with this stopper 1
Stops upon colliding with 0.

The operation of the safety device for a fireproof shutter constructed as described above will be described. In normal times other than during a fire or inspection, the fireproof shutter is housed in a manner that the shutter curtain 2 is wound up in the upper shutter box 8 and restrained from falling by a brake.

Now, when a signal for closing the fire prevention shutter enters the brake control device due to an inspection or a fire or a malfunction, the restraint by the brake is released and the shutter curtain 2 is guided to the guide rail 3. And descend by its own weight. Then, both ends of the lowermost slat 5 collide with the stopper 10 in the guide rail 3 and stop.
In this state, as shown in FIG. 2A, the lowermost slat 5 of the shutter curtain 2 is located above the installation surface, but the fire prevention slide plate 9 abuts on the installation surface to close the slat 5 for fire prevention. Is performed.

By the way, for example, when the fire protection shutter is activated due to a malfunction, if a child or the like P is erroneously caught between the fire protection shutters immediately below the fire protection shutter, as shown in FIG. The curtain 2 stops in a state before being closed by the stopper 10, and the fire prevention slide plate 9 slides upward with respect to the shutter curtain 2 by the sandwiched child and retreats, so that the gap is not completely closed and the gap is not completely closed. leave. Thus, even if the fire prevention shutter is closed, the child can be completely sandwiched between the shutter curtains 2 so that the load is not applied and an accident can be avoided, which is extremely safe.

The safety device according to the present invention has a very simple structure. The fire prevention slide plate 9 of the safety device is attached to the seat plate 6 of the fire shutter already installed, and the stopper 10 is fixed to the guide rail 3. With the simple work described above, accidents due to the fireproof shutter can be prevented, and the safety function can be exhibited extremely effectively.

Although the stopper is provided in the middle of the guide rail in the first embodiment, a rod extending upward from the installation surface may be mounted in the groove of the guide rail. Further, the stopper may be configured such that the lower end of the shutter curtain is stopped with a certain gap left when the fire prevention shutter is closed, and the stopper is attached to the upper side of the guide rail and to the outer surface of the side. A member that contacts the stopper may be attached to the upper slat instead of the lower slat.

As a modification of the first embodiment of the present invention, although not shown, the shutter curtain itself is formed to have a length such that when the shutter curtain itself is closed, the lower end does not contact the installation surface. If it does, a similar function will occur without providing a stopper. For example, a configuration in which about several slats are removed from the lowermost stage of the existing fireproof shutter, a seat plate is attached to the newly lowermost slat, and a fireproof slide may be attached to this.

FIG. 4 is a view showing a second embodiment of the safety device for a fireproof shutter according to the present invention. The feature of the second embodiment is that a non-combustible sheet 17 is used as a fire prevention auxiliary member instead of the fire prevention slide plate 9. The non-combustible sheet 17 is made of a cloth material mixed with non-combustible metal fibers,
It is made of a non-combustible chemical fiber material, a non-combustible synthetic resin material, or the like, and is formed so as to be freely deformable not into a sheet plate but into a cloth. The non-combustible sheet 17 is attached to the lower end of the shutter curtain 2 together with the seat plate 16 with the screws 7.
A screw 18 is attached to the lower end of the non-combustible sheet 17 with a screw 7 having such a weight that the non-combustible sheet 17 does not shake and does not injure the person P when the fire prevention shutter is lowered.

The operation of the safety device for a fireproof shutter according to the second embodiment will be described. When the shutter curtain 2 is lowered by its own weight due to fire, inspection, or malfunction, the shutter curtain 2 is stopped with a gap left by the stopper 10 as in the first embodiment. Then, as shown in FIG. 4B, the remaining gap is closed by the non-combustible sheet 17 to exhibit a fire prevention function.

In this case, even if the child or the like P is erroneously located immediately below the fireproof shutter and is likely to be caught by the fireproof shutter, there is a gap between the shutter curtain 2 and the installation surface S, and FIG.
As shown in (c), the non-combustible sheet 17 only hits the child's body and is lifted. The non-combustible sheet 17 and the strip 18 are the shutter curtain 2 of the fireproof shutter.
Since it is lighter than, even if the weight is applied to a child, there is no danger, and an accident of being caught by the fireproof shutter can be prevented. The feature of the second embodiment is that since the non-combustible sheet 17 is used, its structure is simple and its mounting is very simple. Further, since the non-combustible sheet 17 is a cloth-like freely deformable one, the shutter box 8
Winding inside is smooth.

As described above, the embodiment of the present invention is described in the first and second embodiments.
Although described based on the embodiment of the present invention, without being limited to the above embodiment, if within the technical idea of the present invention,
Further, other embodiments are included.

[0030]

According to the safety device for a fireproof shutter of the present invention, a stopper for stopping the fireproof shutter above an installation surface is provided on a guide rail of the fireproof shutter.
At the lower end of the fire prevention shutter, a fire prevention slide plate or a non-combustible sheet is provided as a fire prevention auxiliary member, and when the fire prevention shutter is closed, the fire prevention function is exhibited together with the fire prevention shutter. When it is caught, it moves upward and retreats to leave a gap between the fireproof shutter and the installation surface, so with an extremely simple structure, accidents such as children being caught can be prevented, and Regardless of the new construction, it can be attached to the fireproof shutter at low cost only by performing simple incidental work.

[Brief description of the drawings]

FIG. 1 is a first embodiment of a fire safety device according to the present invention and an enlarged view of a main part thereof.

FIG. 2 is a view for explaining the operation of the first embodiment of the fire safety system according to the present invention.

FIG. 3 is a diagram illustrating a main part of a first embodiment of a fire safety system according to the present invention.

FIG. 4 is a second embodiment of a fire safety system according to the present invention and an enlarged view of a main part thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slat 2 Shutter curtain 3 Guide rail 4 Groove 5 Lowermost slat 6, 16 Seat plate 7 Screw 8 Shutter box 9 Fire prevention slide plate (fire prevention auxiliary member) 10 Stopper 11 Bottom part of fire prevention slide plate 12 Both sides of fire prevention slide plate Reference Signs List 13 long hole 14 support rod 17 non-combustible sheet (fire prevention auxiliary member) 18 band plate P person S fire protection shutter installation surface

[Procedure amendment]

[Submission date] March 26, 1999 (1999.3.2
6)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Safety device for fire prevention shutter

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof shutter used in commercial buildings, schools, hospitals, factories, and other buildings and facilities, and more particularly to a fireproof shutter for preventing a person from being caught in the fireproof shutter. Related to safety devices.

[0002]

2. Description of the Related Art In recent years, fire prevention shutters have been widely used as countermeasures against fire in commercial buildings, schools, and the like. The conventional fireproof shutter is wound up when it is released, is restrained by a brake, and is stored.
The structure is such that the shutter is lowered and closed by its own weight by releasing the restraint of the brake.

[0003] However, recently, a serious accident has occurred in which a child is laid under the fireproof shutter which has been dropped due to malfunction and the child is crushed by the load, and a review of the safety of the fireproof shutter has become a social problem. I have. As a safety measure, it is designed so that the fireproof shutter does not fall down except during a fire or inspection, but if there is a person directly under the fireproof shutter when the fireproof shutter falls, it should be optically Means such as emergency detection and emergency braking are considered. However, for this purpose, an optical detection device and a control device for controlling the brake are required, and the configuration is complicated, so that the equipment cost is low regardless of whether a new fireproof shutter is installed or if it is attached to an existing fireproof shutter. Get higher. Moreover, the use of an optical or electrical detection device or control device does not mean that there is no danger of malfunction or the like.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and can be attached to an existing or newly installed fireproof shutter simply by performing simple additional work. An object of the present invention is to provide a low-cost safety device for a fireproof shutter having a simple structure.

Specifically, a stopper is provided on the guide rail of the fireproof shutter to stop the fireproof shutter with a gap between the fireproof shutter and an installation surface, or the fireproof shutter is formed so as to be closed with a gap left. , fire slide plate is provided as a fire auxiliary member to the lower end of the fire shutter, in fire protection shutter is closed is exhibits fireproof function becomes part of the fire protection shutter slides upward when the child or the like is sandwiched during the fire shutter drops A safety device for a fire shutter that prevents accidents by retreating and leaving a gap between the fire shutter and the installation surface.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a fire prevention auxiliary member attached to a lower end of a fire prevention shutter so as to extend downward, and is fixed to a guide rail of the fire prevention shutter. a safety device for a fire shutter comprising a stopper that is, the fire auxiliary member
Is a fire prevention slide plate, and the fire prevention slide plate is
Having a slot formed in the downward direction, extending through the slot
Attached to the lower end of the fire shutter by the support rod
Up and down with respect to the fireproof shutter within the range of the slot.
Are relatively movable in a direction, when closing the fire shutter, the stopper is in contact with part of the fire shutter is stopped so as not to contact with the fire protection shutter installation surface, the fire shutter When stopped, when there is no person directly below the fire prevention shutter, the fire prevention slide plate is brought into contact with the installation surface, thereby closing for fire prevention.If there is a person, the fire slide plate by abutment on the person, retracted lifted relatively upwards with respect to the fire shutter, fire protection shutter, characterized in that not be subjected to loads of the fire shutter to the person Provide safety devices.

[0007] When the fire shutter is closed, a part of the fire shutter that the stopper comes into contact with may be a lowermost slat of a plurality of slats connected to each other.

[0008] The fire slide plate is formed from bottom and side portions in cross section has a U-shape, the slots are formed in people each of the side portions, the fire slide plate,
The support rod extending through the long hole may be attached to a seat plate at the lower end of the fireproof shutter, and may be configured to be movable up and down so as to sandwich the seatplate and the fireproof shutter.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on embodiments with reference to the drawings. 1 to 3 are views for explaining an embodiment of a safety device for a fireproof shutter according to the present invention. FIG. 1A shows a state in which the fireproof shutter provided with the safety device of the present invention is slightly opened. The fireproof shutter includes a shutter curtain 2 in which a plurality of slats 1 are connected in the vertical direction.

As shown in FIGS. 1 (a) and 3 (a) and 3 (b), both ends of the slat 1 are slidably fitted in the concave grooves 4 of the pair of guide rails 3 having a concave cross section. And
Thereby, it is guided up and down and moves up and down. As shown in FIG. 1B, a seat plate 6 is fixed to the lowermost slat 5 along its longitudinal direction with screws 7. Seat plate 6
Is shorter than the interval between the pair of guide rails 3.

In normal times, not during fires or inspections,
The fireproof shutter is open, and the shutter curtain 2 is wound into a shutter box 8 disposed above and is restrained by a brake so that the shutter curtain 2 does not descend. When checking the raising and lowering of the shutter during normal inspection, or when a fire occurs and the smoke is detected by a smoke detector or heat is detected by a heat detector, the restraint by the brake is released. The shutter curtain 2 is lowered by its own weight, and the fireproof shutter is closed.

[0012] Such configuration is a conventionally known structure fire shutter, the invention features a possible safety device may be attached to the structure of such a traditional fire shutter. This safety device includes a fire prevention slide plate 9 as a fire prevention auxiliary member attached to the lower end of the shutter curtain 2 and a stopper 10 fixed in the concave groove 4 of the pair of guide rails 3.

The fireproof slide plate 9 is formed by bending a single rectangular refractory metal plate into a U-shaped cross section, and has a bottom portion 11 and both side portions 12. The width in the longitudinal horizontal direction of the fire prevention slide plate 9 is formed to be slightly smaller than the interval between the pair of guide rails 3. On the other hand, the vertical width of the fire prevention slide plate 9 is preferably as small as possible so as to be housed in the box 8, but a certain width is necessary in consideration of a safety prevention function described later. For example, it is formed in a width (for example, 30 cm) that does not cause any trouble even if a child is sandwiched.

At both ends of the slide plate 9 in the horizontal direction,
A long hole 13 penetrating each of the side portions 12 is formed in the up-down direction. As shown in FIG. 3, the fireproof slide plate 9 is
It is arranged so that the seat plate 6 is sandwiched between the both side portions 12,
The support rod 14 is passed through the long hole 13, and the fire prevention slide plate 9 is attached to the seat plate 6. At both ends of the support rod 14, retaining heads 15 are fixed. Of course, it may be attached with a bolt and a nut instead of the support rod.

The support rod 14 is a slot 1 of the fire prevention slide plate 9.
3 is mounted so as to be movable in FIG.
As shown in (b) and (c), the fire prevention slide plate 9 can slide vertically with respect to the seat plate 6 and the shutter curtain. As the material of the fire prevention slide plate 9, the same material as that of the slat 1 may be used, or a material having higher fire resistance may be used. Alternatively, a refractory material may be applied to or adhered to the fireproof slide plate 9.

In the groove 4 of the pair of guide rails 3, FIG.
As shown in (a) and (c), the stopper 10 is fixed by welding or fixing means such as a bolt. When the stopper 10 is attached by a bolt, a plurality of screw holes or long holes may be formed in the guide rail so that the attachment height can be adjusted. The height h of the mounting position from the installation surface S (the surface on which the guide rail is installed, for example, the floor surface of the building) to the upper surface of the stopper 10 is substantially equal to the vertical width of the fire prevention slide plate 9. I do. Both ends of the lowermost slat 5 descending from above are fitted with this stopper 1
Stops upon colliding with 0.

[0017] To describe the operation of the safety device of the fire shutter consisting configuration described above. In normal times other than during a fire or inspection, the fireproof shutter is housed in a manner that the shutter curtain 2 is wound up in the upper shutter box 8 and restrained from falling by a brake.

[0018] Now, inspection or fire occurs, or by malfunction, a signal for closing the fire shutter from entering the brake control apparatus, the shutter curtain 2 by solving the constraint by the brake is guided by the guide rails 3 And descend by its own weight. Then, both ends of the lowermost slat 5 collide with the stopper 10 in the guide rail 3 and stop.
In this state, as shown in FIG. 2A, the lowermost slat 5 of the shutter curtain 2 is located above the installation surface, but the fire prevention slide plate 9 abuts on the installation surface to close the slat 5 for fire prevention. Is performed.

By the way, for example, when the fire shutter is activated by the malfunction, when sandwiched between the fire protection shutter child like P is had directly below the fire shutter accidentally, as shown in FIG. 2 (b), the shutter The curtain 2 stops in a state before being closed by the stopper 10, and the fire prevention slide plate 9 slides upward with respect to the shutter curtain 2 by the sandwiched child and retreats, so that the gap is not completely closed and the gap is not completely closed. leave. This allows the child to close the fire protection shutter,
It is possible to avoid an accident without being completely sandwiched between the shutter curtains 2 and applying the load, and it is extremely safe.

The safety device according to the present invention has a very simple structure. The fire prevention slide plate 9 of the safety device is attached to the seat plate 6 of the fire shutter already installed, and the stopper 10 is fixed to the guide rail 3. With the simple work described above, accidents due to the fireproof shutter can be prevented, and the safety function can be exhibited extremely effectively.

In the embodiment , the stopper is provided in the middle of the guide rail. However, a rod extending upward from the installation surface may be mounted in the groove of the guide rail. Further, the stopper may be configured such that the lower end of the shutter curtain is stopped with a certain gap left when the fire prevention shutter is closed, and the stopper is attached to the upper side of the guide rail and to the outer surface of the side. A member that contacts the stopper may be attached to the upper slat instead of the lower slat.

As a modification of the embodiment of the present invention ,
Although not shown, if the shutter curtain itself is formed to have a length such that the lower end thereof does not come into contact with the installation surface when the shutter curtain is closed, a similar function is provided without providing a stopper. For example, a configuration in which about several slats are removed from the lowermost stage of the existing fireproof shutter, a seat plate is attached to the newly lowermost slat, and a fireproof slide may be attached to this.

[0023] Although the embodiments of the present invention has been describes the group Dzu <br/> to examples, without being limited to the embodiments described above, if it is within the scope of the technical concept of the present invention, further Other embodiments are also included.

[0024]

According to the safety device for a fireproof shutter of the present invention, a stopper for stopping the fireproof shutter above an installation surface is provided on a guide rail of the fireproof shutter.
At the lower end of the fire prevention shutter, a fire protection slide
When the fire prevention shutter is closed, the fire prevention shutter works together with the fire prevention shutter.However, if a child or the like is caught when the fire prevention shutter descends due to inspection, fire, or malfunction, it moves upward and retreats to the fire prevention shutter. Since a gap is left between the installation surfaces, the extremely simple structure can prevent accidents such as children being pinched, and perform simple incidental work on the fireproof shutter regardless of whether it is an existing or a new installation Just can be installed at low cost.

[Brief description of the drawings]

FIG. 1 is an embodiment of a safety device for a fireproof shutter according to the present invention and an enlarged view of a main part thereof.

FIG. 2 is a diagram illustrating the operation of the embodiment of the safety device for a fireproof shutter according to the present invention.

FIG. 3 is a diagram illustrating a main part of an embodiment of a safety device for a fireproof shutter according to the present invention.

[Description of Signs] 1 Slat 2 Shutter curtain 3 Guide rail 4 Concave groove 5 Lowermost slat 6 Seat plate 7 Screw 8 Shutter box 9 Fire prevention slide plate (fire prevention auxiliary member) 10 Stopper 11 Bottom portion of fire prevention slide plate 12 Fire prevention slide plate 13 Side holes 14 Support rod P Person S Fire protection shutter installation surface

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Deleted

Claims (6)

[Claims] 1. A safety device for a fireproof shutter, comprising: a fireproof auxiliary member attached to a lower end portion of a fireproof shutter so as to extend downward; and a stopper fixed to a guide rail of the fireproof shutter. The fire protection auxiliary member can be lifted relatively upward with respect to the fire protection shutter. When closing the fire protection shutter, the stopper comes into contact with a part of the fire protection shutter and the fire protection shutter is closed. Is stopped so as not to contact the installation surface, and when the fire prevention shutter is stopped, if there is no person directly below the fire prevention shutter, the fire prevention auxiliary member contacts the installation surface to prevent fire. When the closure is performed and a person is present, the fire-prevention auxiliary member comes into contact with the person, thereby being lifted and retracted relatively upward with respect to the fire-prevention shutter. A safety device for a fireproof shutter, wherein the load of the fireproof shutter is not applied to the person. 2. The slat according to claim 1, wherein a part of the fire shutter that the stopper comes into contact with when the fire shutter is closed is a lowermost slat of a plurality of slats connected to each other. Safety device for fireproof shutter. 3. A safety device for a fire-retardant shutter comprising a fire-retardant auxiliary member, wherein the fire-retardant auxiliary member is attached to a fire-retardant shutter having a dimension such that a lower end portion thereof does not come into contact with an installation surface when closed, leaving a gap. When the fireproof shutter is closed, and there is no person directly under the fireproof shutter, the fireproof auxiliary member abuts on the installation surface when the fireproof shutter is closed. In the case where a fire prevention closure is performed and a person is present, the fire protection auxiliary member moves upward with respect to the fire prevention shutter and retracts so that the load of the fire prevention shutter is not applied to the person. A safety device for a fireproof shutter. 4. The fire prevention auxiliary member is a fire prevention slide plate, and the fire prevention slide plate has an elongated hole formed in a vertical direction, and is provided at a lower end of the fire prevention shutter by a support rod extending through the elongated hole. 4. The safety device for a fire shutter according to claim 1, wherein the safety device is attached and vertically movable within a range of the elongated hole with respect to the fire shutter. 5. The fire-resistant slide plate is formed from a bottom portion and both side portions, and has a U-shaped cross section. The elongated holes are formed on each of the both side portions. 5. The fire prevention device according to claim 4, wherein the fire prevention shutter is attached to a seat plate at a lower end portion of the fire prevention shutter by a support rod extending through the elongated hole, and is movable up and down so as to sandwich the seat plate and the fire prevention shutter. Safety device for shutter. 6. The safety device for a fire shutter according to claim 1, wherein the fire prevention auxiliary member is formed of a non-combustible sheet that can be freely deformed like a cloth.