Door frame fixing device for fire shutter with evacuation door

Abstract

The present invention discloses a door frame fixing device for an escape door interlocking fire shutter, which is installed in an escape door interlocking fire shutter having a structure in which, in the event of a fire, a part of the passage is blocked by a door frame equipped with an escape door rotating, and the remaining part is blocked by a fire shutter connected to a shutter drive motor descending, thereby preventing the fire shutter from being damaged by the movement of the door frame when opening and closing the escape door by holding the door frame so that it does not move.

Description

Technology Field

[0001] The present invention relates to a door frame fixing device for an escape door interlocking fire shutter, and more specifically, to a door frame fixing device for an escape door interlocking fire shutter that is installed in a structure in which, in the event of a fire, a part of the passage is blocked by a door frame equipped with an escape door rotating, and the remaining part is blocked by a fire shutter connected to a shutter drive motor descending, thereby preventing the fire shutter from being damaged by the movement of the door frame when opening and closing the escape door by holding the door frame so that it does not move. Background Technology

[0003] Generally, fire shutters are shutters capable of blocking smoke and withstanding flames; they are designed to withstand flames for a certain period of time to buy time for people evacuating from a building in the event of a fire and to prevent the flames from spreading and engulfing the entire building.

[0005] Conventional fire shutters are installed embedded in the ceiling or wall and are configured to descend to completely close the passageway when a fire is detected.

[0007] Consequently, conventional fire shutters have a problem in that people cannot escape if the passageway is closed.

[0009] To address this, Korean Registered Patent No. 10-1203392 discloses a fire shutter interlocked with an escape door. Specifically, the fire shutter interlocked with an escape door is structured such that, in the event of a fire, a door frame equipped with an escape door blocks a portion of the passageway, while the remaining portion is blocked by the fire shutter.

[0011] However, conventional fire shutters interlocked with escape doors have a structure in which the end of the fire shutter is inserted and connected to the end of the door frame. Therefore, when people pull or push to open the escape door, the door frame moves together, causing the fire shutter connected to the end of the door frame to deform or break.

[0013] Typically, fire shutters are classified into steel shutters and screen shutters; however, there is a problem where steel shutters deform and break when the door frame moves, while screen shutters tear and break. Prior art literature

[0015] 1) Republic of Korea Registered Patent No. 10-1203392 (Registration Date: November 15, 2012), Title of Invention: "Escape Door Interlocking Fire Shutter Driving System" 2) Republic of Korea Registered Patent No. 10-2030504 (Registration Date: October 02, 2019), Title of Invention: "Fire Door Interlocking Shutter" 3) Republic of Korea Registered Patent No. 10-0993102 (Registration Date: November 02, 2010), Title of Invention: "Improved Fire Screen Shutter" 4) Republic of Korea Registered Patent No. 10-0842219 (Registration Date: June 24, 2008), Title of Invention: "Escape Door Structure of Fire Screen Shutter" The problem to be solved

[0016] The present invention is proposed to improve the aforementioned problems, and its purpose is to provide a door frame fixing device for an escape door-linked fire shutter that is installed in an escape door-linked fire shutter having a structure in which a part of the passageway is blocked by a door frame equipped with an escape door and the remaining part is blocked by a fire shutter, thereby holding the door frame so that it does not move, so that the door frame does not move together when the escape door is opened and closed, and thus the fire shutter is not deformed or damaged. means of solving the problem

[0018] The aforementioned purpose is to be installed in an escape door-linked fire shutter having a structure in which, in the event of a fire, a part of the passage is blocked by a rotating door frame equipped with an escape door, and the remaining part is blocked by a fire shutter linked to a shutter drive motor descending. The invention comprises: a sensor case fixedly installed at the part that makes contact when the door frame moves to the blocking position on the passage; a sensor installed in the sensor case that transmits a signal to cause the fire shutter to descend when the door frame moves to the blocking position; a rotating shaft rotatably installed at the rear inside the sensor case; a catch piece with its rear fixed to a part of the rotating shaft, which rotates up and down around the rotating shaft and has a catch end formed at the front that is bent downward; a catch hook fixedly installed on a part of the door frame that catches on the catch end of the catch piece to restrict the movement of the door frame when the door frame moves to the blocking position; and a catch piece with its rear fixed to a part of the rotating shaft, which rotates up and down around the rotating shaft and is extended forward so as to protrude outside the sensor case and selectively make contact with a lower part of the fire shutter. This is achieved by a door frame fixing device for an escape door interlocking fire shutter, characterized by being configured such that it is composed of a rotating member that rotates up and down according to the operation of the fire shutter, and when the fire shutter is wound onto a winding roller and rises to the top, a lower part of the fire shutter catches on the front of the rotating member, causing the rotating member to be lifted upward and the locking member connected to the rotation axis to be lifted together, and in this state, when a fire occurs and the door frame is rotated to a blocking position to block the passage, a sensor detects this and lowers the fire shutter, and when the fire shutter is lowered, the rotating member descends downward due to its own weight, and the locking member also descends, and the locking end of the locking member catches on the locking hook of the door frame to hold the door frame so that it does not move.

[0020] And the sensor is characterized by being configured such that when a button protrudes forward and the door frame rotates and moves to a blocking position, the button is pressed to detect the position of the door frame and transmit a signal to lower the fire shutter.

[0022] In addition, a support member is connected to one side of the sensor case so as to extend horizontally, and is installed to be fixed to the wall of the passageway through this support member, and is configured to restrict the movement of the door frame together with the sensor case by contacting the support member when the door frame rotates and moves to a blocked position. Effects of the invention

[0024] The door frame fixing device of the fire shutter interlocking with the escape door according to the present invention is installed at the top of the door frame and the fire shutter, and holds the door frame so that it does not move by means of a locking piece and a locking hook that maintain a locking state when the fire shutter is lowered, so that the door frame does not move together when the escape door is opened and closed, and thereby has the effect of solving the problem of the fire shutter being deformed or damaged as the door frame moves.

[0026] In addition, the door frame fixing device of the fire shutter interlocking with the escape door according to the present invention has a lower fixing means additionally installed at the bottom of the door frame, so that when the fire shutter is fully lowered, the fixing pin is driven into the ground to fix the bottom of the door frame, thereby holding the door frame more securely so that it does not move when opening and closing the escape door, and as a result, the problem of the fire shutter being deformed or damaged as the door frame moves is effectively resolved. Brief explanation of the drawing

[0028] FIG. 1 is a front view showing the state in which a door frame fixing device of an escape door interlocking fire shutter according to the present invention is installed. FIG. 2 is an exploded perspective view showing the configuration of a door frame fixing device of an escape door interlocking fire shutter according to the present invention. FIG. 3 is a front cross-sectional view of a door frame fixing device of an escape door interlocking fire shutter according to the present invention. FIG. 4 is a plan cross-sectional view of a door frame fixing device of an escape door interlocking fire shutter according to the present invention. FIG. 5 is a side cross-sectional view of a door frame fixing device of an escape door interlocking fire shutter according to the present invention. Fig. 6 is an operation diagram of Fig. 5, FIG. 7 is a perspective view showing the configuration of a lower fixing means applied to the present invention, FIGS. 8 and FIGS. 9 are cross-sectional views showing the operating state of the lower fixing means applied to the present invention. Specific details for implementing the invention

[0029] The present invention will be described in detail below with reference to the attached drawings.

[0031] Referring to FIG. 1, the present invention is installed in an escape door-linked fire shutter having a structure in which a part of the passage (10) in the event of a fire is blocked by a door frame (20) equipped with an escape door (22) and the remaining part is blocked by a fire shutter (30). It is installed at the top of the door frame (20) and is configured to hold the door frame (20) so that it does not move when the door frame (20) operates to a closed position.

[0033] To aid understanding, the fire shutter interlocked with the escape door is further explained as follows: when a fire occurs, the door frame (20) inserted into the buried space (12) rotates by a separate operating means to block a part of the passage (10), and in this state, the fire shutter (30), which is wound on a winding roller (34) that rotates by a shutter drive motor (32), descends to block the remaining part of the passage (10). Of course, the end of the fire shutter (30) is installed so as to be connected to the door frame (20) in a state where it is fitted into a fitting groove (24) formed at the end of the door frame (20). Furthermore, the fire shutter (30) may be a steel shutter or a screen shutter, and is not limited to any one structure.

[0035] Referring to FIGS. 2 to 6, the door frame fixing device of the fire shutter interlocking with the escape door according to the present invention comprises a sensor case (100), a rotating shaft (120), a locking piece (130), a locking hook (150), and a rotating base (140).

[0037] First, the sensor case (100) is fixedly installed in the part that comes into contact when the door frame (20) moves to a blocked position on the passageway (10), and a sensor (110) is installed inside to detect when the door frame (20) moves to a blocked position and to transmit a signal to lower the fire shutter (30).

[0039] At this time, any method can be applied as long as the sensor (110) can detect that the door frame (20) has moved to a blocked position, but preferably, a button structure as shown in the drawing can be applied. That is, the sensor (110) is configured such that a button (112) protrudes forward, and when the door frame (20) rotates and moves to a blocked position, the button (112) is pressed to detect the position of the door frame (20) and transmit a signal to lower the fire shutter (30).

[0041] Meanwhile, as shown in FIG. 1, a support member (160) may be connected to one side of the sensor case (100) so as to extend horizontally, and configured to be fixedly installed on the wall of the passage (10) through this support member (160). At this time, in addition to assisting in the installation of the sensor case (100), the support member (160) comes into contact with the support member (160) when the door frame (20) moves to a blocked position while rotating, thereby restricting the movement of the door frame (20) together with the sensor case (100).

[0043] Next, the rotation axis (120) is installed so as to be rotatable by being connected horizontally at the rear of the sensor case (100).

[0045] Next, the rear end of the catch piece (130) is fixed to one side of the rotation axis (120) so that it can be lifted upward or lowered while rotating up and down around the rotation axis (120), and a catch end (132) that is bent downward is formed at the front, and a catch groove portion is formed on the inside so that a catch hook (150) can be caught.

[0047] Here, the catch hook (150) is fixedly installed on a part of the door frame (20) and is configured to restrict the movement of the door frame (20) by engaging with the catch end (132) of the catch piece (130) when the door frame (20) moves to a blocked position.

[0049] Next, the rotating platform (140) is installed such that its rear end is fixed to a part of the other side of the rotation axis (120), allowing it to rotate up and down around the rotation axis (120) and be lifted upward or lowered downward, and its front end is extended forward so as to protrude outside the sensor case (100) and selectively contact a part of the lower end of the fire shutter (30). That is, when the fire shutter (30) rises to the top, the rotating platform (140) is lifted by being caught on a part of the lower end of the fire shutter (30), and when the fire shutter (30) descends, the force lifting the rotating platform (140) is removed, and the rotating platform (140) descends due to its own weight. At this time, a lower bar (36) is provided at the bottom of the fire shutter (30) and configured to lift the rotating platform (140) by hooking onto the lower bar (36), but it may also be configured to lift the rotating platform (140) by installing a separate hook member (not shown) at the bottom of the fire shutter (30).

[0051] The operational relationship of the door frame fixing device of the fire shutter interlocking the escape door configured in this manner is as follows.

[0053] First, normally, the door frame (20) rotates and is inserted into the recessed space (12), and as the shutter drive motor (32) operates, the fire shutter (30) is wound onto the winding roller (34) and maintained in a state where it is lifted to the top. Then, the passageway (10) is completely secured.

[0055] At this time, when the fire shutter (30) is lifted to the top, as shown in FIG. 5, a lower part of the fire shutter (30) catches on the front of the rotating platform (140), and the rotating platform (140) is lifted upward, and the locking piece (130) connected to the rotating shaft (120) is also lifted together and maintained in that state.

[0057] In this state, if a fire occurs and the door frame (20) is rotated to a blocking position to block the passage (10), the sensor (110) detects this and lowers the fire shutter (30). As shown in FIG. 6, as the fire shutter (30) lowers, the force lifting the rotating platform (140) is removed, and the rotating platform (140) moves downward due to its own weight. Then, as the rotating shaft (120) rotates together, the locking piece (130) connected to the rotating shaft (120) also moves downward, and as shown in FIG. 4, the locking end (132) of the locking piece (130) catches on the locking hook (150) of the door frame (20), thereby holding the door frame (20) so that it does not move.

[0059] Then, when people open and close the escape door (22) in case of fire, the door frame (20) does not move together, and as a result, the escape door (22) can be opened and closed more safely, and the fire shutter (30) hanging on the end of the door frame (20) does not get deformed or damaged.

[0061] Meanwhile, the present invention can be configured such that a lower fixing means (200) is additionally installed at the bottom of the door frame (20) to further secure the door frame (20).

[0063] Referring to FIGS. 7 to 9, the lower fixing means (200) applied to the present invention comprises: a support bracket (210) fixed to the lower end of a door frame (20) and having a horizontal portion (212) and a vertical portion (214) formed at right angles; an operating lever (220) installed such that one end is rotatably coupled to the upper end of the horizontal portion (212) of the support bracket (210) around a center pin (222) and the other end extends outwardly through an operating hole (216) formed vertically in the vertical portion (214); a pin fixing member (230) formed protruding from the middle of the horizontal portion (212) of the support bracket (210) and having a pin insertion hole (232) formed through the center; and a spring catch (242) formed on the upper end, which is coupled to pass through the pin insertion hole (232) of the pin fixing member (230), has its upper surface in close contact with the lower surface of the operating lever (220). It is composed of a fixing pin (240), a pressure spring (250) interposed between a pin fixing member (230) and a spring catch (242) to elastically press the fixing pin (240) upward, a pressing lever (260) installed such that one end is rotatably coupled to the vertical portion (214) of the support bracket (210) with the other end centered on the hinge pin (262) and contacts the upper part of the operating lever (220), and the other end is extended to protrude forward from the support bracket (210) so as to be pressed when the fire shutter (30) descends to a position that seals the passage (10), and a fixing hole (280) formed in the floor of the passage (10) at a position corresponding to the fixing pin (240) so that the fixing pin (240) can be inserted and caught.

[0065] The lower fixing means (200) configured in this way presses the other end of the pressing lever (260) as shown in FIG. 9 when the fire shutter (30) is lowered to a sealed position, and the pressing lever (260) presses the other end of the operating lever (220), causing the operating lever (220) to rotate around the center pin (222) and press the fixing pin (240), and the fixing pin (240) is lowered and inserted into the fixing hole (280) to hold the door frame (20) more firmly so that it does not move.

[0067] And when the fire shutter (30) rises, the force pressing the push lever (260) is removed, and due to the restoring force of the pressure spring (250), the operating lever (220) rises as shown in FIG. 8, and at the same time the fixing pin (240) rises and is disengaged from the fixing hole (280), allowing the door frame (20) to move. At this time, the push lever (260) is pushed up and rises as the operating lever (220) rises.

[0069] As described above, although the present invention has been illustrated and explained in relation to specific embodiments, it will be readily apparent to those skilled in the art that various modifications and changes are possible without departing from the spirit and scope of the invention as defined by the claims. Explanation of the symbols

[0071] 10: Passageway 20: Door frame 22: Evacuation door 30: Fire shutter 32: Shutter drive motor 34: Winding roller 36: Hajangba 100: Sensor case 110: Sensor 112: Button 120: Rotation axis 130: Locking piece 132: Locking section 140: Rotating plate 150: Hook 200: Lower fixing means 210: Support bracket 220: Operating lever 230: Pin fixing device 240: Fixing pin 250: Pressure spring 260: Push lever 280: Fixed worker

Claims

Claim 1 It is installed in an escape door-linked fire shutter having a structure in which, in the event of a fire, a part of the passage is blocked by a rotating door frame equipped with an escape door, and the remaining part is blocked by a fire shutter linked to a shutter drive motor descending; the device comprises: a sensor case fixedly installed at the part that makes contact when the door frame moves to the blocking position on the passage; a sensor installed in the sensor case that transmits a signal to cause the fire shutter to descend when the door frame moves to the blocking position; a rotating shaft rotatably installed at the rear inside the sensor case; a catch piece with its rear fixed to a part of the rotating shaft, which rotates up and down around the rotating shaft and has a catch end formed at the front that is bent downward; a catch hook fixedly installed on a part of the door frame that catches on the catch end of the catch piece to restrict the movement of the door frame when the door frame moves to the blocking position; and a device with its rear fixed to a part of the rotating shaft, which rotates up and down around the rotating shaft and is installed so as to extend forward so as to protrude outside the sensor case and selectively make contact with a lower part of the fire shutter according to the operation of the fire shutter. A door frame fixing device for an escape door interlocking fire shutter, characterized by being configured such that it is composed of a rotating member that rotates up and down, and when the fire shutter is wound onto a winding roller and rises to the top, a lower part of the fire shutter catches on the front of the rotating member, thereby lifting the rotating member upward and the locking piece connected to the rotating shaft is also lifted together; in this state, if a fire occurs and the door frame is rotated to a blocking position to block the passage, a sensor detects this and lowers the fire shutter, and when the fire shutter is lowered, the rotating member descends downward due to its own weight, and the locking piece also descends, so that the locking end of the locking piece catches on the locking hook of the door frame to hold the door frame in place so as not to move. Claim 2 A door frame fixing device for an escape door interlocked fire shutter according to claim 1, characterized in that the sensor is configured such that when a button protrudes forward and the door frame rotates and moves to a blocking position, the button is pressed to detect the position of the door frame and transmit a signal to lower the fire shutter. Claim 3 A door frame fixing device for an escape door interlocking fire shutter, characterized in that, in claim 1, a support member is horizontally extended and connected to one side of the sensor case and is installed to be fixed to the wall of the passageway through the support member, and when the door frame rotates and moves to a blocking position, it contacts the support member to restrict the movement of the door frame together with the sensor case. Claim 4 In claim 1, a lower fixing means is additionally installed at the bottom of the door frame, wherein the lower fixing means comprises: a support bracket fixed to the bottom of the door frame and having a horizontal section and a vertical section formed at a right angle; an operating lever installed such that one end is rotatably coupled to the upper end of the horizontal section of the support bracket with the other end centered around a central pin, and the other end extends outwardly by penetrating an operating hole formed vertically in the vertical section; a pin fixing member protruding from the middle of the horizontal section of the support bracket and having a pin insertion hole formed through the center; a fixing pin coupled to penetrate the pin insertion hole of the pin fixing member, having its upper surface in close contact with the lower surface of the operating lever, and having a spring catch formed on its upper end; a pressure spring interposed between the pin fixing member and the spring catch to elastically press the fixing pin upward; and one end of the vertical section of the support bracket with the other end rotatably coupled around a hinge pin and installed to contact the upper part of the operating lever, with the other end extending forward protruding beyond the support bracket to a position where the fire shutter seals the passage. A door frame fixing device for an escape door interlocking fire shutter, characterized by being configured such that when the fire shutter is lowered, it is configured to be composed of a push lever installed to be pressed, and a fixing hole formed in the floor of the passage at a position corresponding to the fixing pin so that the fixing pin can be inserted and caught therein, wherein when the fire shutter is lowered to a sealed position, the other end of the push lever is pressed, and as the push lever presses the other end of the operating lever, the operating lever rotates around the center pin and presses the fixing pin, and the fixing pin is inserted into the fixing hole while lowering to hold the door frame so as not to move, and when the fire shutter is raised, the force pressing the push lever is removed, and the fixing pin rises due to the restoring force of the pressure spring and detaches from the fixing hole, thereby allowing the door frame to move.

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