KR200331691Y1 - Door closer apparatus for the fire prevention door - Google Patents

Abstract

The present invention keeps the fire doors with smoke control and disaster prevention functions normally open and closes automatically in the event of a fire, and prevents the fire doors from being forcibly fixed by wedges or horse hooves. The present invention relates to a door closer device for fire doors capable of sufficiently exhibiting smoke control and disaster prevention functions, and in particular, a door door that automatically closes a fire door having smoke control and fire prevention functions when opened, and is operated by emergency power supplied by an induction lamp when a fire occurs. The driving means for lowering the head inside the body fixed to the fire door, the fire door is held open and coupled to the body and connected to the rod of the door closure to prevent the door is closed by the door closer, Keep open However the door and constrained not to rotate by the closure, is lowered together when the head is lowered by operation of the drive means is a fire door is held open by means of rotation in the door closure consists of a closed fire door means for guiding to close the fire door.

Description

Door closer apparatus for the fire prevention door

The present invention relates to a door closer device for a fire door, and more particularly, the fire door is kept open even without tools such as a wedge or a horseshoe, and then automatically closes in an emergency such as smoke or fire, so that asphyxiation or fire by smoke is different. It is related with the door closer device for fire doors which can function as a smoke prevention and disaster prevention so that it may not spread to a place.

In general, fireproof structures and fireproof compartments are defined according to the specific area or use of each floor of the building. Therefore, fire shutters and fire doors are inevitably installed. . Fire doors have the functions of smoke control and disaster prevention, which can reduce life and property damage.

However, the reality is that the fire doors are not closed by door closures because the doors are twisted with wedges or horseshoes. Door closers are widely used for fire doors and are devices that automatically close fire doors.

In large shopping centers, hospitals, and offices that are over a certain area, people frequently enter and exit. Therefore, in most buildings, the fire door is closed with wedges or horseshoes to prevent the doors from closing.

Therefore, when a fire occurs, the fire door is not closed, so there is a disadvantage that smoke enters the room and suffocates or the flame spreads into the room.

The present invention was developed in view of the conventional problems, and an object of the present invention is to provide a door closer device for a fire door that keeps a fire door having a function of smoke prevention and disaster prevention normally closed in case of fire. Is in.

Another object of the present invention is to provide a door closer device for a fire door that can fully exhibit the smoke control and disaster prevention function of the fire door in the event of a fire by preventing the fire door to be fixed by wedge or horseshoe.

1 is a front view showing a fire door installation state of the door closer device of the present invention

Figure 2 is a perspective view of separating the fire door opening holding means and the fire door closing means of the door closer device

3 is a cross-sectional view showing a state in which the fire door opening maintaining means of the door closer device of the present invention is operated

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a cross-sectional view showing a state in which the fire door closing means of the door closer device of the present invention is operated

6 is a cross-sectional view taken along the line B-B of FIG.

FIG. 7 is a cross-sectional view illustrating a process in which a fire door is automatically closed due to melting of a shaft connection part of a fire door closing means in a state of FIG. 3; FIG.

<Code Description of Main Parts of Drawing>

10: fire door 20: door closer

30: induction light 40: driving means

41: body 42: solenoid

43: head 44: hinge

45: lever 50: power supply control means

52: switch 53: relay

60: fire door opening maintaining means 62: fixed inner cylinder

62a: shaft entrance and exit 63: pin

65: spring 66: ball

67: rotating outer cylinder 68: ball locking groove

70: fire door closing means 71: ball hook axis

72: ball fixed shaft 74: shaft connection

In order to achieve the above object, the present invention suppresses the function of the door closer so that the fire door is kept open, and the fire door is automatically closed by the door closure regardless of the fire door keeping means. It consists of closing means.

The fire door closing means is composed of a drive means for driving the fire door closing means to be operated by the power applied to the induction lamp in the event of a fire, and a power supply control means for protecting the drive means by shutting off after a certain time the power applied to the drive means has passed. do.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing a fire door installation state of the door closer device of the present invention, Figure 2 is a perspective view of the fire door opening maintaining means and the fire door closing means of the door closer device of the present invention separated. According to the present invention, a door closer 20 is installed on an upper part of a fire door 10 used to partition an interior of a predetermined area or more, and a door door 11 is configured to restrict the door closer 20 to control the opening and closing of the fire door. The holding means 60, the fire door closing means 70, the driving means 40 and the power supply control means 50 is provided.

The driving means 40 is connected to a power source and an electric wire of the induction lamp 30 installed above the doorway of the room and is operated by a power applied to the induction lamp 30 in case of fire so that the fire door closing means 70 descends.

The driving means 40 has a head installed in the head solenoid 46 penetrating the upper and lower parts of the solenoid 42, the body 41 is elevated when the power is applied to the inside of the body 41 fixed to the door frame 11 ( 43) and a lever 45 connecting the head 43 and the solenoid 42 through the hinge 44.

Power supply control means 50 is a switch 52 that is turned on / off by the projections 51 of the head and the relay 53 and the head 43 so that the power supplied to the induction lamp 30 is supplied to the solenoid 42 for a predetermined time. It is composed of When the head 43 is lowered and the protrusion 51 turns on the switch 52, the relay 53 is operated to cut off the power supplied to the solenoid 42.

The fire door opening holding means 60 has a fixed inner cylinder 62 having a axial opening and exit 62a, a rotating outer cylinder 67 surrounding the outer circumference of the fixed inner cylinder 62, and a fixed inner cylinder 62 on the body 41. It is composed of a bracket (61) for connecting and fixing. Rotating outer cylinder 67 is formed on the outer circumferential surface connecting portion 69 and the rod 69a on which the rod 21 of the door closer 20 is fitted, and a plurality of semi-circular arc catching grooves 68 are formed radially on the inner circumferential surface. . The fixed inner cylinder 62 has a ball 66 fitted into the ball catching groove 68, a spring 65 for pressing the ball 66 and a pin 63 fitted into a pin hole 64 communicating with the shaft opening and exit 62a. It is composed of

Fire door closing means 70 is inserted into the shaft opening (62a) ball pin shaft 71, the head (63) for the pin (63) to press the spring 65 so that the ball 66 is caught in the ball catching groove 68 The ball locking shaft 72 lowers the ball catching shaft 71 when the driving means 40 is operated in a state of being in contact with 43) and allows the pin 63 to exit through the pinhole 64 through the shaft outlet 62a. And the shaft connection portion 74 is connected to the ball locking shaft 72 and the ball locking shaft 71 so that the ball locking shaft 71 is separated from the shaft inlet (62a) by the spring 75 while being melted and broken when overheated. It consists of. Reference numeral 73 denotes a handle for manually pulling the ball catch shaft 71 to allow the ball disengagement shaft 72 to be fitted into the shaft opening and exit 62a, and to operate the fire door closing means 70, and 76 to the ball catch shaft 71. And a stopper formed at the end of the ball release shaft 72 to limit their lifting distances.

The present invention configured as described above allows the manager to push up the ball catching shaft 71 to be inserted into the shaft outlet 62a as shown in FIG. 3. In this way, while the pin 63 comes into contact with the outer circumferential surface of the ball catching shaft 71, the spring 65 is compressed and the ball 66 is fitted into the ball catching groove 68 by the force, thereby maintaining a locked state. Therefore, when the fire door 10 is opened, the open state is maintained.

When the door closer 20 opens and closes the open fire door 10, the rotary outer cylinder 67 of the fire door opening holding means 60 connected to the door closure 20 and the rods 21 and 69a is kept at a stop state. The fire door 10 does not close. Since the ball catching groove 68 formed on the inner circumferential surface of the rotary outer cylinder 67 is caught by the ball 66 and stopped, the fire door 10 is kept open as desired.

When the handle 73 is pulled out so that the ball disengagement shaft 72 is fitted into the shaft outlet opening 62a, the pin 63 which has been in contact with the outer circumferential surface of the ball catching shaft 71 is moved toward the ball disengagement shaft 72 having a small diameter. At this time, since the compression force is removed while the compression of the spring 65 is released, the ball 66 is in a state in which the ball catching groove 68 can be separated. Therefore, the fire door 10 is naturally closed by the action of the door closer 20, and at the same time, the rotating outer cylinder 67 rotates together with the fire door 10 while the ball catching groove 68 rides over the ball 66. The fire door may allow the administrator to manually keep the fire door open or always close by the door closer 20.

FIG. 5 illustrates a process in which the driving means 40 is operated when a fire occurs to close the open fire door 10 of FIG. 3. When a fire occurs, the induction lamp 30 installed in the indoor entrance is turned on. Emergency power is supplied to the induction lamp 30, the present invention is configured such that the power is supplied together to the solenoid 42 of the drive means (40).

When the solenoid 42 is operated, the lever 45 is pulled, the head 43 is lowered, and the ball release shaft 72 of the fire door closing means 70 in contact with the lever 45 is fitted into the shaft inlet 62a. Since the ball release shaft 72 has a smaller diameter than the ball catching shaft 71 as described above, the pin 63 is inserted into the fixed inner cylinder 62 by the restoring force of the spring 65, and the compression force of the spring 65 is Removed. Therefore, since the ball 66 is not restrained by the spring 65, the rotary outer cylinder 67 is free to rotate. Therefore, when the open fire door 10 receives the rotational force by the door closer 20, the fire door opening holding means 60 is rotated while the ball catching groove 68 of the rotary outer cylinder 67 passes over the ball 66, so that the fire door 10 ) Will eventually close automatically.

The present invention is to enable the fire door (10) to maintain the open state in the event of fire is automatically closed to exert the functions of smoke control and disaster prevention. Fire doors should be kept closed at all times, but in most cases, the doors are opened and used in hospitals, shopping centers and offices.

Therefore, the present invention allows the fire door to be normally opened and closes automatically in case of an emergency such as a fire, so that the conventional practice of forcibly fixing the fire door with a wedge or horseshoe can solve the original purpose of the fire door, which is prescribed by the Building Code. will be.

The driving means 40 of the present invention can check whether the manager is operating even if a fire does not occur. When the switch 52 built in the body 41 is operated, the power connected to the induction lamp 30 is applied to the solenoid 42 so that the ball disengagement shaft 72 is lowered so that the ball 66 rides the ball catching groove 68. The fire door 10 is closed as it passes. Therefore, it is possible to confirm the normal operation of the door closer device.

7 shows that the drive means 40 of the present invention is useless when emergency power is not supplied when the fire is cut off. The present invention has prepared a shaft connection portion 74 using the lead as an emergency means for this purpose. The shaft connecting portion 74 has a function of connecting the ball release shaft 72 and the ball catching shaft 71 constituting the fire door closing means 70. The ball release shaft 72 and the ball catching shaft 71 are chromed for affinity with the shaft connecting portion 74.

However, when a fire occurs, the surface temperature of the fire door 10 is increased by high heat, so when the temperature reaches a predetermined temperature, the soldering of the shaft connecting portion 74 melts. At this time, since the ball catching shaft 71 is removed and removed from the shaft inlet and outlet 62a by the restoring force of the compression spring 75 built in the ball catching shaft 71, the pin 63 is freely moved toward the shaft inlet and outlet 62a. Is moved. Therefore, while the ball catching groove 68 rides over the ball 66, the rotary outer cylinder 67 is rotated, and the fire door 10 is closed to exert a function of smoke control and disaster prevention.

As described above, according to the present invention, a fire door having a function of smoke control and disaster prevention is normally kept open and then automatically closed by an emergency power supplied to an induction lamp when a fire occurs. Therefore, by fixing the fire doors with illegal materials such as wedges or horse hooves as in the prior art, it is possible to minimize the valuable casualties by eliminating the practice of preventing the doors from closing in an emergency.

In addition, the fire door closing means is constructed by using molten lead that melts at a certain temperature in case emergency power is not supplied. Thus, the fire door is always closed in the event of a fire. Since it can be applied to the closure device, it is possible to save installation costs.

Claims (6)

The door closer 20 which automatically closes the fire door 10 having a smoke control and fire prevention function when opened, Drive means (40) for lowering the head 43 inside the body 41 fixed to the door frame 11 is operated by the emergency power supplied to the induction lamp (30) when a fire occurs, Fire door opening maintenance means 60 is coupled to the body 41 and the rod 21 of the door closer 20 is connected to prevent the door (10) opened to be closed by the door closer 20, and When the fire door is opened and retained by the means 60, the fire door maintenance means 60 is constrained so as not to be rotated by the door closer 20, and when the head 43 is lowered by the operation of the drive means 40 is lowered together. A fire door door closer device, characterized in that the fire door opening maintaining means (60) is composed of a fire door closing means (70) which is rotated by the door closure (20) to guide the fire door (10) to close. The method of claim 1, The drive means 40 is a solenoid 42 operated by the emergency power source and Fire door door closure device, characterized in that consisting of a lever 45 for connecting the head 43 and the solenoid 42 like a seesaw rotated by a hinge (44). The method according to claim 1 or 2, It is further provided with a power supply control means 50 for limiting the time that the emergency power is supplied to the solenoid 42, Power supply control means 50 is a switch 52 that is turned on / off by the projections 51 formed on the outer peripheral surface of the head 43 and Fire door door closure device, characterized in that consisting of a relay (53) to switch off the power supplied to the solenoid 42 when the switch 52 is on. The method of claim 1, Fire door opening and holding means 60 is connected to the body 41 through the bracket 61 and the fixed inner cylinder 62 is provided with a pin 63 and the ball 66 with a spring 65 interposed therebetween, Rotating outer cylinder 67, which is fitted to the outer circumferential surface of the fixed inner cylinder 62 and formed with a plurality of ball catching grooves 68 over the ball 66 of the fixed inner cylinder 62; Fire door door closer device, characterized in that formed on the outer circumferential surface of the rotary outer cylinder (67) is connected to the rod (21) of the door closer (20). The method according to claim 1 or 4, The fire door closing means 70 is fitted into the axial inlet 62a formed in the center of the fixed inner cylinder 62 to push the pin 63 toward the rotary outer cylinder 67 so that the ball catching groove 68 is caught by the ball 66 and the rotary outer cylinder. Ball catch shaft (71) to allow (67) to stop It is formed successively on the upper part of the ball catching shaft 71 and pushed down by the head 43, pushes down the ball catching shaft 71 and is inserted into the shaft inlet 62a so that the pin 63 is restored to its original position and the ball catching groove ( 68 is a door closer device for fire doors characterized in that the ball over the ball 66 and the rotating outer cylinder (67) is rotated to guide the fire door shaft (72) to close. The method of claim 5, Between the ball locking shaft 71 and the ball locking shaft 72 is formed so that the shaft connection portion 74 is the main component of the lead is melted by the heat in the fire is configured to fall off the ball locking shaft 71 and the ball locking shaft 72 , Inside the ball disengagement shaft 72 is provided with a spring 65 which pushes the ball catching shaft 71 when the shaft connecting portion 74 melts, is separated from the shaft outlet 62a, and the pin 63 is restored to its original position. A door closer device for a fire door.