KR101213114B1 - Automatic fireproof shutter - Google Patents

Abstract

The automatic fire shutter according to the present invention has a fire detector for detecting smoke and heat in a building, an interlock controller that receives a detection signal transmitted from the fire detector, and a brake signal of a main motor by receiving a start signal from the interlock controller. And an electric switch including a closing device for lowering the fire shutter by lowering the fire shutter and a limit for limiting a rising / lowering interval of the fire shutter, wherein the pressurization time of the brake lever by the closing device is provided in the electric switch. According to a value set in advance in the controller, the rising / lowering section of the fire prevention shutter by the limit may be controlled even when the moving plate is not in contact with the upper and lower limit contact pins provided in the limit or when the contact is not made with the upper and lower limit contact pins. It may be based on the moving distance value of the moving plate which is set in advance.
According to this, even if a breakage of the moving plate constituting the limit and the upper and lower limit contact pins occurs, the moving distance of the shutter is maintained even if no contact is made between the movable plate for controlling the lifting distance of the shutter and the upper and lower limit contact pins. Since the moving distance value of the moving plate for controlling is set in advance, it is possible to prevent the lifting of the shutter.

Description

Automatic Fire Shutter {AUTOMATIC FIREPROOF SHUTTER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic fire shutter, and more particularly, to an automatic fire shutter provided with a closing device and a limit to detect smoke and heat during a fire in a building to prevent evacuation and spread of fire by a person in a fire generating area.

In general, fire shutters installed in public buildings or facilities such as department stores, hospitals, shopping malls, subways, etc., where people have a lot of access, are closed at the time of fire and contain the fire. It is used to prevent it.

Such a fire shutter allows the people who have not been evacuated while the fire is in the area where the shutter descends to the first stop line by driving the smoke detection sensor when the fire occurs.

Here, when the shutter comes down to the first stop line, the brake is released by pressing the brake lever of the main motor by operating the closing device in the interlocking controller based on the information detected by the smoke detection sensor in the event of a fire and the shutter is released by its own weight. Will descend.

Then, when the shutter descends to the first stop line, the closing device operates in reverse, and the pressure applied to the brake lever is released, causing the brake to stop and the shutter stops at the first stop line.

Then, by operating the heat sensor, the shutter stopped at the first stop line is lowered to the ground by its own weight to protect the adjacent area from the fire area.

Here, when the shutter descends to the ground, the limit is controlled so that the lowering does not proceed any more.

That is, when the moving plate moving up and down among the components of the limit is in contact with the lower limit contact pin, the shutter is no longer lowered. On the contrary, when the fire is terminated and the shutter is to be returned to its original state, the moving plate is The shutter is raised to contact the upper limit contact pin so that the shutter is no longer raised.

However, such a conventional fire shutter has a non-productive problem because the structure of the closure is complicated and its manufacturing cost is high.

In addition, when the shutter is lowered or raised by the limit, the wear of the parts constituting the limit or breakage such as an electric short circuit occurs, that is, when the upper and lower limit contact pins are worn, the moving plate continues to be upper or lower. Moves to and continues to lift or lower the shutter even in a position where the shutter is stopped, there is a problem that the shutter breakage or noise occurs.

The present invention is to solve the above problems, to simplify the structure of the closing machine to reduce the production cost, and to provide an automatic fire shutter that is improved so that the rising or falling of the shutter can be made at the user's desired position even when the limit is broken For that purpose.

The automatic fire shutter of the present invention includes a fire detector for detecting smoke and heat in a building, an interlock controller that receives a detection signal transmitted from the fire detector, and a brake signal of the main motor by applying a start signal from the interlock controller to apply a brake. And an electric switch comprising a closing device for releasing the fire shutter by releasing and a limit for limiting a rising / lowering section of the fire shutter, wherein the pressurization time of the brake lever by the closing device is provided in the controller. According to a value set in advance, the rising / lowering section of the fire shutter by the limit is applied to the controller even when the moving plate is not in contact with the upper and lower limit contact pins provided in the limit or the non-contact with the upper and lower limit contact pins. The moving distance value of the moving plate may be set in advance.

The closure includes a housing, a sub-motor embedded in the housing, a screw coupled to the sub-motor to rotate in the housing, a nut coupled to an outer circumferential surface of the screw, and moving forward and backward by the rotational movement of the screw. A pressure bar coupled to the nut to enter and exit the housing through a hole formed at one side of the housing according to the forward and backward movement of the nut, inserted into an outer circumferential surface of the pressure bar, and one side contacts the end of the pressure bar, The other side is in contact with the inner surface of the housing on the side in which the hole is formed, and a pair of springs on the housing and a spring which exerts an elastic force in a direction opposite to the advancing direction of the pressure bar when exposed to the outside of the housing by the advancement of the pressure bar. Upper and lower bounded to be spaced apart, to control the driving of the sub-motor by contact with the nut Including a sensor, the reverse of the nut by the reverse rotation of the sub-motor after the nut is in contact with the upper limit sensor may be made after a predetermined time to the controller takes.

According to the automatic fire shutter according to the present invention, even if the moving plate constituting the limit and the upper and lower limit contact pins are damaged, no contact is made between the movable plate and the upper and lower limit contact pins for controlling the lifting distance of the shutter. Since the moving distance value of the movable plate for controlling the riding distance of the shutter is set in advance, it is possible to prevent the lifting of the shutter.

In addition, the cost of manufacturing the shredder can be reduced by simply forming the structure of the closed group.

1 is a view schematically showing an automatic fire shutter according to an embodiment of the present invention.
FIG. 2 is a view schematically showing a closure of the electric switch of FIG. 1; FIG.
3 is a view schematically showing a limit of the motor-driven switch of FIG. 1 of FIG.
4 is a flow chart schematically showing the lift distance control of the shutter by the limit of FIG.

Hereinafter, an automatic fire shutter of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing an automatic fire shutter according to an embodiment of the present invention.

Referring to FIG. 1, the automatic fire shutter 100 of the present invention includes a shutter 10, a fire detector 50, an interlock controller 60, and an electric switch 150.

The shutter 10 is installed in the passage of the building, the shutter box 30 is installed on the ceiling of the passage, and guide rails 20 for guiding the lifting and lowering of the shutter 10 are installed on both sidewalls of the passage.

The shutter 10 is wound around the winding drum 40 installed in the shutter box 30 so that the passage of the building is opened, and the passage is closed by its own weight in the winding drum 40.

The fire detector 50 is composed of a smoke detection sensor for detecting the generation of smoke and a heat detection sensor for detecting heat to detect a fire in the building.

The interlock controller 60 receives the information detected by the fire detector 50 and controls the electric switch 150.

The electric switch 150 lowers the shutter 10 by closing the shutter 10 under the control of the interlocking controller 60 which has received the information transmitted from the fire detector 50, and closes the passage, after the fire extinguish the shutter 10. Raise the) to return to the original state.

The electric actuator 150 has a main motor 110 connected to the brake lever 111, a closing device 120 for releasing the brakes by pressing the brake lever 111 to lower the shutter, and the shutter 10. Limit 130 and the controller 140 to limit the lifting limit of the.

2 is a view schematically showing a closure of the electric switch of FIG. 1.

Referring to FIG. 2, the closure 120 includes a housing 121 having a hole (not shown) formed on one side thereof, a sub-motor 122, a screw 123, and a nut 124 embedded in the housing 121. , A pressure bar 125, a spring 126, and an upper and lower limit sensor 127.

The screw 123 is coupled to the rotation shaft of the sub-motor 122 is rotated in the forward or reverse direction by the drive of the sub-motor 122.

The nut 124 is coupled to the outer circumferential surface of the screw 123 to be moved forward or backward on the screw 123 by the rotational movement of the screw 123.

For example, the nut 124 may move forward on the screw 123 when the screw 123 rotates in the forward direction, and the nut 124 may move backward when the screw 123 rotates in the reverse direction.

The pressure bar 125 is coupled to the nut 124 and the nut 124 moves forward together when the nut 124 moves forward, so that one side end thereof goes out through a hole formed in the housing 121 to move the brake lever 111. Pressurized.

The spring 126 is inserted into the outer circumferential surface of the pressing bar 125, one side is in contact with one end of the pressing bar 125 protruding in a direction perpendicular to the insertion direction of the spring 126, the other side The inner surface of the housing 121 is in contact with the surface formed with a hole.

Therefore, when the pressure bar 125 is advanced through the hole of the housing 121 and exposed to the outside, it is advanced while overcoming the elastic force of the spring 126.

The upper limit sensor 127a and the lower limit sensor 127b are disposed to be spaced apart from each other by a predetermined interval, and the upper limit sensor 127a is disposed at the hole side of the housing 121, and the lower limit sensor 127b is disposed in the sub-motor. It is arranged on the 122 side.

The upper limit sensor 127a is for limiting a forward upper limit of the nut 124. When the nut 124 moves forward, the upper limit sensor 127a contacts the upper limit sensor 127a. The driving of 122 is stopped to stop the advancement of the nut 124.

Accordingly, the pressure bar 125 which is pushed out of the housing 121 by pushing the nut 124 and pushing the brake lever 111 is stopped in that state, thereby maintaining the release state of the brake.

The lower limit sensor 127b is for limiting a reverse lower limit of the nut 124. The lower limit sensor 127b contacts the lower limit sensor 127b when the nut 124 moves backward. The driving of 122 is stopped to stop the reverse of the nut 124.

Therefore, the pressure bar 125 pressurizing the brake lever 111 by the back of the nut 124 returns to its original position while releasing the pressure.

Here, the pressing time of the brake lever 111 by the pressing bar 125 may be made by a time preset in the controller 140.

When the closing device 120 having the structure as described above receives the start signal from the interlock controller 60, the sub-motor 122 drives in the forward direction, thereby advancing the nut 124 and thereby the pressure bar 125 moves the brake lever 111. By pressing the brake is released, the shutter 10 is lowered.

When the descending shutter 10 reaches the primary stop line A, the sub-motor 122 drives in the reverse direction to reverse the nut 124, thereby converting the brake release state into the brake state and The shutter 10 stops at the first stop line A to secure an evacuation route and an evacuation time for those who have not been evacuated in the fire occurrence area.

3 is a view schematically showing a limit of the electric switch of FIG. 1 of FIG. 1, and FIG. 4 is a flowchart schematically showing a lift distance control of the shutter by the limit of FIG. 3.

Referring to FIG. 3, the limit 130 is movably coupled to the screw bar 131 and the outer circumferential surface of the screw bar 131, and a pair of moving plates 132 and the pair are spaced apart from each other by a predetermined distance. The upper and lower limit contact pins 133 disposed next to the screw bar 131 to limit the upper and lower upper and lower intervals of the shutter 10 by the contact with the moving plate 132.

Here, the upper and lower limit contact pins 133 are also spaced apart from each other so that the lower side movable plate 132b of the movable plate 132 is moved on the screw bar 131 to contact the lower limit contact pin 133b. The driving of the main motor 110 is stopped so that the shutter 10 can no longer be lowered.

In addition, the upper movable plate 132a of the movable plate 132 is moved on the screw bar 131 and stops driving of the main motor 110 when the upper limiting contact pin 133a comes in contact with the shutter 10. ) Is not allowed to be elevated.

Here, the upper and lower limit contact pins 133 are fixed within the limit 130, and the lifting distance of the shutter 10 can be adjusted by adjusting the separation distance between the pair of moving plates 132. have.

Meanwhile, the lifting distance adjustment of the shutter 10 by the limit 130 of the present invention may be based on the moving distance of the moving plate 132 preset in the controller 140.

That is, the movable plate 132 does not come into contact with the upper and lower limit contact pins 133 due to breakage of the upper and lower limit contact pins 133, and thus the lifting and lowering is continued without stopping even at the point where the shutter 10 should stop. In order to prevent the movement, the moving distance value of the moving plate 132 may be set in advance in the controller 140 so that the moving distance of the moving plate 132 does not come into contact with the upper and lower limit contact pins 133. When the controller 140 satisfies the value set in the controller 140, the driving of the main motor 110 may be stopped by the controller 140 to prevent the continuous lifting of the shutter 10.

Here, the moving distance value setting of the moving plate 132 is a switch (not shown) of the automatic fire shutter 100 artificially after installing the automatic fire shutter 100 of the present invention in the passage of the building as shown in FIG. In operation S1, the controller 140 recognizes the moving distance of the moving plate 132 in the state in which the shutter 10 is in contact with the ground and the original state is returned (S2).

That is, in the state where the shutter 10 is in contact with the ground and the original state is returned, the moving distance value required for the moving plate 132 to contact the upper and lower limit contact pins 133 is stored in the controller 140. If the moving plate 132 is not in contact with the upper and lower limit contact pins 133 but the moving distance of the moving plate 132 satisfies the set value, the controller 140 may change the main motor 110 according to the stored moving distance value. The driving of the motor is stopped (S3).

According to the limit 130 having the above-described structure, not only the lifting distance of the shutter 10 is controlled by the contact of the moving plate 132 and the upper and lower limit contact pins 133, but also the controller 140 is set in advance. Since the lifting distance of the shutter 10 can be controlled by the moving distance value of the moving plate 132, it is possible to prevent poor control of the lifting distance of the shutter 10 due to breakage of components such as wear.

According to the automatic fire protection shutter 100 having the above structure, breakage of the moving plate 132 constituting the limit 130 and the upper and lower limit contact pins 133 occurs, thereby controlling the lifting distance of the shutter 10. Even if no contact is made between the movable plate 132 and the upper and lower limit contact pins 133, the moving distance value of the movable plate 132 for controlling the riding distance of the shutter 10 is set in advance, so that the shutter Lifting failure of (10) can be prevented.

In addition, it is possible to reduce the cost of manufacturing the closure 120 by simply forming the structure of the closure 120.

100 ... fireproof shutter 110 ... main motor
111 ... brake lever 120 ... closer
121 ... housing 122 ... sub-motor
123 ... screw 124 ... nut
125.Pressure bar 127 ... Upper and lower limit sensor
130 ... Limit 131 ... Screw Bar
132 ... moving plate 133 ... upper and lower limit sensors

Claims (2)

A fire detector for detecting smoke and heat in the building;
An interlock controller that receives a detection signal transmitted from the fire detector; And
Receiving a start signal from the interlocking controller and presses the brake lever of the main motor to release the brake by releasing the brake and an electric switch having a limit for limiting the rising and falling section of the fire shutter,
The closure is:
housing;
A sub-motor embedded in the housing;
A screw coupled to the sub-motor to rotate in the housing;
A nut coupled to an outer circumferential surface of the screw to move back and forth by the rotational movement of the screw;
A pressure bar coupled to the nut to move in and out of the housing through a hole formed in one side of the housing as the nut moves forward and backward;
The pressure bar is inserted into the outer circumferential surface of the pressure bar so that one side contacts the end of the pressure bar, and the other side contacts the inner surface of the housing on the side where the hole is formed to move forward of the pressure bar when exposed to the outside of the housing by the advancement of the pressure bar. A spring that exerts an elastic force in a direction opposite to the direction; And
A pair is spaced apart from each other on the housing, and includes an upper limit and a lower limit sensor for controlling the driving of the sub-motor by contact with the nut,
After the nut is in contact with the upper limit sensor, the reverse of the nut is performed after the preset time is set in the controller by reverse rotation of the sub-motor.
The pressurization time of the brake lever by the closure is based on a value preset in the controller provided in the electric switchgear,
The rising / lowering section of the fire prevention shutter by the limit may move the moving plate preset in the controller even when the moving plate is in contact with the upper and lower limit contact pins provided in the limit or when the moving plate is not in contact with the upper and lower limit contact pins. By the distance value,
The moving distance value of the moving plate preset in the controller is obtained by determining the moving distance required for the moving plate to contact the upper and lower limit contact pins in the state where the shutter is in contact with the ground and the original state is returned. Automatic fire prevention shutter characterized in that. delete

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