KR20170021608A

KR20170021608A - Emergency door device for fireproof screen shutter

Info

Publication number: KR20170021608A
Application number: KR1020150116212A
Authority: KR
Inventors: 공창석
Original assignee: 공창석
Priority date: 2015-08-18
Filing date: 2015-08-18
Publication date: 2017-02-28

Abstract

According to the present invention, disclosed is an improved emergency door device which is rolled up for a fireproof screen shutter, wherein an emergency door installed in a portion of a fireproof screen cloth is formed to be vertically operated, and when the emergency door is raised upwardly, the emergency door can be easily raised by a restoring force of a torsional spring to be quickly opened. Moreover, when power to raise the emergency door is removed, the emergency door is automatically closed to be conveniently used.

Description

{EMERGENCY DOOR DEVICE FOR FIREPROOF SCREEN SHUTTER}

The present invention relates to an emergency door device for lifting up a fire screening shutter, and more particularly, to an emergency door device installed on a part of a fireproof screen cloth so as to be operated up and down. When the emergency door is lifted upwards, The present invention relates to an emergency door device for an anti-fire door shutter for an anti-fire screen shutter, which can be conveniently used by allowing an emergency door to be automatically closed when the door is quickly lifted and removed.

In general, fire-retardant shutters are one of the fire-proof structures that prevent fire from spreading to the inside of a building when a fire occurs. It gives time for people to evacuate in case of fire, and causes harmful factors such as flame, smoke and toxic gas. Thereby preventing the device from evolving from the ignition point.

Such a fire-retarding shutter is usually constituted by a driving device provided on a ceiling and a shutter driven by the driving device to be lowered to the floor in the event of a fire. The shutter is composed of a steel shutter made of iron material and a screen shutter made of refractory screen cloth Respectively. Of course, fireproof screen shutters made of refractory screen cloth are mainly installed recently.

These fire screen shutters have emergency doors that allow people to escape. Therefore, even if the fireproof screen is lowered and the passageway is closed when a fire occurs, people can escape through the emergency door.

For example, Korean Patent No. 10-0842219, No. 10-0987888 discloses a structure in which an emergency door is pushed in one direction and opened by a sliding door. However, since the sliding door type emergency door structure is a material that shakes fireproof screen knobs when the emergency door is opened by holding the handle in a sudden mind due to a fire, the same force is not applied to the upper and lower sides, There is a problem that it is not opened.

Korean Patent Registration No. 10-0987888 discloses a structure in which an emergency door is pushed and opened by a hinged door. However, there is a problem that the emergency door structure of the hinged type does not easily close the emergency door due to the flow of air after people open the emergency door and escape.

1) Korean Registered Patent No. 10-0842219 (Registered Date: June 24, 2008), Title of the invention: "Escape door structure of fire screen shutters" 2) Korea Patent No. 10-0993102 (Registered Date: Nov. 02, 2010), Title of the invention: "Improved Fire Screen Shutter" 3) Korean Patent No. 10-0987888 (filed on October 07, 2010), entitled "Fire Screen Shutter" 4) Korean Patent Publication No. 10-2011-0004534 (Disclosure Date: Jan. 14, 2011), title of the invention: "Emergency door opening / closing device for fire screen shutters"

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a structure in which an emergency door is opened and closed. When an emergency door is lifted up, So as to prevent a malfunction from occurring when the emergency door is opened and closed.

The above-mentioned object is achieved by a fireproof screen cloth which is installed in a ceiling and is cut off by a driving device when a fire occurs, An emergency door installed at the emergency exit of the refractory screen cloth to selectively open and close the emergency exit; A spring support shaft fixed to the refractory screen cloth at the top of the emergency door; A hollow outer pipe installed to be fitted to the spring support shaft and rotatably installed around the spring support shaft and having an upper end secured to the outer surface and wound around the outer surface when the emergency door is rotated; A torsion spring installed between the spring support shaft and the outer pipe so as to be wound on the outer surface of the spring support shaft and having one end fixed to the spring support shaft and the other end fixed to the inner surface of the outer pipe; And a weight bar installed at a lower end of the emergency door to help the emergency door descend by gravity to maintain a closed state. When the emergency exit is closed, the emergency door is lowered by gravity to close the emergency exit, Wherein the torsion spring is twisted to have a restoring force so that the emergency door can be easily lifted by the restoring force of the torsion spring when the emergency door is lifted to open the emergency exit. do.

A shaft fixing bracket is fixed to the left and right sides of the fireproof screen cloth on the basis of the upper end of the emergency door. The spring support shaft is fixed to a shaft fixing bracket, A gap is formed in which an outer pipe can be assembled.

A bushing having a spacing is fitted between the spring support shaft and both sides of the outer pipe to form a uniform space in which a torsion spring can be installed between the spring support shaft and the outer pipe.

When the emergency door is lifted upwards, the emergency door can be easily opened by the restoring force of the spring. When the emergency door is closed by the force of gravity, There is no malfunction when the door is opened and closed, safety is ensured, and a user who moves in a low posture can be lifted from below.

1 is a front view showing an installation state of an emergency door device for lifting up a fire screen shutter according to the present invention;
FIG. 2 is an exploded sectional view for explaining the construction of an emergency door device for lifting up a fire screen shutter according to the present invention;
3 is a front view showing an operation state in which an emergency door is opened in an emergency door device for lifting up a fire screen shutter according to the present invention.

The present invention will now be described in detail with reference to the accompanying drawings.

Referring to FIGS. 1 to 3, a fire screening cloth for a fire screening shutter according to the present invention includes a fireproof screen cloth 10 installed on a ceiling and shutting off a passageway by a driving device when a fire occurs . Here, the refractory screen cloth 10 and the driving apparatus may be applied by a known technique.

The fire extinguisher screen cloth 10 according to the present invention includes a part of the fire extinguishing screen cloth 10 through which an escape opening 12 is formed to open and close the escape opening 12 selectively. Particularly, the present invention is characterized in that the emergency gate 100 is opened and closed while the emergency gate 100 is operated up and down.

To this end, the present invention is provided with a spring support shaft 110 fixed to the refractory screen cloth 10 at the upper end of the emergency door 100. A hollow outer pipe 120 is fitted to the spring support shaft 110 and is installed to be rotatable about the spring support shaft 110. A torsion spring 130 is wound around the outer surface of the spring support shaft 110 between the spring support shaft 110 and the outer pipe 120. One end of the torsion spring 130 is connected to the spring support shaft 110, And the other end is fixed to the inner surface of the outer pipe 120 so that the emergency door 100 descends and the torsion spring 130 is twisted when the outer pipe 120 rotates to generate a restoring force . Since the principle of the torsion spring 130 is a known technique, a detailed description thereof will be omitted. When the upper end of the emergency door 100 is fixed to the outer surface of the outer pipe 120 and the outer pipe 120 rotates, the emergency door 100 is installed to be wound on the outer surface of the outer pipe 120. A weight bar 140 is installed at the lower end of the emergency door 100, so that the emergency door 100 can be lowered by gravity to maintain a closed state. A handle 102 is installed under the emergency door 100 so that the emergency door 100 can be lifted.

The shaft fixing bracket 160 is fixed to the left and right sides of the refractory screen cloth 10 with respect to the upper end of the emergency door 100 And both ends of the spring support shaft 110 are fixed to the corresponding shaft fixing brackets 160 respectively. Therefore, a gap is formed between the refractory screen cloth 10 and the spring support shaft 110 so that the outer pipe 120 can be assembled. Here, the shaft fixing bracket 160 is fixed to the refractory screen cloth 10 by a rivet method, and the spring supporting shaft 110 and the shaft fixing bracket 160 are fixed to each other through welding. However, they could be fixed in different ways. The shaft fixing bracket 160 is formed in the shape of a plate having a predetermined thickness and is formed to be long in the horizontal direction so as to have a length of about half of the length of the emergency door 100, It is preferable to configure to stretch and hold some sections flat.

Next, the torsion spring 130 is preferably fixed to each of the spring support shaft 110 and the outer pipe 120 by welding. However, the torsion spring 130 may be fixed in a different manner You can do it.

Between the spring support shaft 110 and the outer pipe 120, a bushing 150 is inserted and held between the spring support shaft 110 and the outer pipe 120, 130 can be installed. Of course, in the present invention, the bushing 150 is used as the spacing member in consideration of the unit cost, but a bearing may be provided.

The upper end of the emergency door 100 is fixed to the outer surface of the outer pipe 120 by fixing the upper end of the emergency door 100 through the sheathing so that the outer pipe 120 can be fitted into the groove 104 It is preferable to install the outer pipe 120 in a manner that the outer pipe 120 is inserted into the groove of the upper end of the emergency door 100 and fixed. However, another fixing method may be applied. That is, after forming a long groove along the longitudinal direction on the outer surface of the outer pipe 120, the upper end of the emergency door 100 may be fixed in a manner to be fitted in the groove or may be fixed through a separate fixing ring or a fixing pin It can also be configured.

The operation and operation of the present invention will be described. When a fire occurs, the fireproof screen cloth 10 descends to block a certain space of the passageway and the building. Of course, when the refractory screen cloth 10 descends, the emergency door 100 is also lowered as shown in FIG. 1, and the state of closing the emergency exit 12 is maintained. At this time, since the weight bar 140 overcomes the force of the torsion spring 130, when the emergency door 100 descends, the torsion spring 130 is twisted to have a restoring force. Therefore, when the person lifts the emergency door 100 as shown in FIG. 3 in order to open and exit the emergency door 100, the emergency door 100 can be easily lifted with a small force by the restoring force of the torsion spring 130. When the emergency door 100 is opened with the emergency door 100 opened, the emergency door 100 is lowered again by gravity through the weight bar 140 to close the emergency exit 12 as shown in FIG. 1, Therefore, it prevents flames, smoke and toxic gas from spreading.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Anyone who can afford it will know.

10: Refractory screen cloth 12: Emergency exit
100: emergency door 110: spring support shaft
120: outer pipe 130: torsion spring
140: Weight bar 150: Bushing
160: Axis fixing bracket

Claims

When installed in the ceiling, if a fire occurs, it is lowered by the driving device to block the passage, and a part of the fireproof screen cloth,
An emergency door installed at the emergency exit of the refractory screen cloth to selectively open and close the emergency exit;
A spring support shaft fixed to the refractory screen cloth at the top of the emergency door;
A hollow outer pipe installed to be fitted to the spring support shaft and rotatably installed around the spring support shaft and having an upper end secured to the outer surface and wound around the outer surface when the emergency door is rotated;
A torsion spring installed between the spring support shaft and the outer pipe so as to be wound on the outer surface of the spring support shaft and having one end fixed to the spring support shaft and the other end fixed to the inner surface of the outer pipe; And
And a weight bar installed at the lower end of the emergency door to help the emergency door descend by gravity to maintain a closed state,
When the emergency gate is closed, the emergency gate is lowered by the gravity and the emergency gate is closed. When the emergency gate is lowered, the torsion spring is twisted so as to have a restoring force. When the emergency gate is lifted to open the emergency gate, Wherein the flame-retardant screen shutter is configured to raise the flame.

The method according to claim 1,
A shaft fixing bracket is fixed to left and right sides of the fireproof screen cloth on the basis of the upper end of the emergency door, and the spring support shaft is fixed to a shaft fixing bracket, Wherein a gap is formed in which an outer pipe can be assembled.

The method according to claim 1,
Wherein a space is formed between the spring support shaft and both sides of the outer pipe so as to sandwich the gap between the spring support shaft and the outer pipe to form a uniform space in which a torsion spring can be installed between the spring support shaft and the outer pipe. Emergency door device for hoisting a shutter.