JP2000008740A - 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 fire 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 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. At the lower end of the fire prevention shutter, a fire prevention slide plate is provided as a fire prevention auxiliary member. When the fire prevention shutter is closed, it becomes a part of the fire prevention shutter and performs a fire prevention function. 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 slide plate attached to a lower end portion 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 fireproof shutter, comprising: a stopper that is mounted on a lower end portion of the fireproof shutter so as to be slidable in a vertical direction relative to the fireproof shutter, When closing the fire prevention shutter, the stopper comes into contact with a part of the fire prevention shutter and stops so that the fire prevention shutter does not abut on the installation surface. When there is no person, the fire prevention slide plate contacts the installation surface to close for fire prevention. The safety plate for a fire shutter is characterized in that the guide plate abuts on the person to slide upward relative to the fire shutter and retreats so that the load of the fire shutter is not applied to the person. Provide equipment.

[0007]

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), 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 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.

Although such a configuration is a conventionally known structure of a fireproof shutter, the present invention is characterized by a safety device which can be attached to such a conventional fireproof shutter structure. 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 fireproof 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.

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 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. 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, but 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.

Although the embodiments of the present invention have been described based on the embodiments, the present invention is not limited to the above-described embodiments, and other embodiments may be made within the technical idea of the present invention. Including.

[0022]

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 is provided as a fire prevention auxiliary member, and when the fire prevention shutter is closed, the fire prevention shutter and the fire prevention function are exhibited. , Slides upward and retreats to leave a gap between the fire prevention shutter and the installation surface. With a very simple structure, it is possible to prevent an accident such as a child being pinched. Instead, it can be attached to the fireproof shutter at low cost only by performing simple additional work.

[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 view for explaining 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 the safety device for a fireproof shutter according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slat 2 Shutter curtain 3 Guide rail 4 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 part of fire prevention slide plate 12 Both sides of fire prevention slide plate 13 Long Hole 14 Support rod P Person S Fire protection shutter installation surface

Claims (1)

[Claims] 1. A safety device for a fireproof shutter, comprising: a fireproof slide plate 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 prevention slide plate is attached to the lower end of the fire prevention shutter so as to be slidable in the up-down direction relative to the fire prevention shutter. When the fire prevention shutter is closed, the stopper moves the fire prevention shutter. The fire prevention shutter is stopped so as not to touch the installation surface by contacting a part thereof.When the fire prevention shutter is stopped, if there is no person directly under the fire prevention shutter, the fire prevention slide plate is mounted on the installation surface. The abutment closes for fire prevention, and if there is a person, the fire prevention slide plate abuts on the person to cause the fire protection shield. A safety device for a fire prevention shutter, wherein the safety device slides upward relative to the shutter and retreats so that a load of the fire prevention shutter is not applied to the person.