KR20070117752A - A door switching machine - Google Patents

Abstract

A door switching machine is provided to allow people to evacuate by manually releasing a door lock when a PCB(Printed Circuit Board) is destroyed by fire and to ensure security in case of arson for the purpose of stealing, since a switch of the door switching machine is operated only in fire and placed in an indoor space. In a door switching machine(34) capable of locking and unlocking a door lock with a DC-geared motor(1) operated by password input or fingerprint recognition, the DC-geared motor is accommodated within a case(20) with a ventilation port(12) and a gear connected to a shaft of the DC-geared motor and a main rotary gear(2) is meshed for forward and reverse rotation of the main rotary gear. A terminal connected to one side of a bimetal shaft(4) is inserted to a hole contoured on a terminal holder of a door lock(6), so as to allow the terminal to escape from the hole when the bimetal shaft is bended by heat. When a fire occurs, the bimetal shaft is bended backwards and an auxiliary bimetal shaft(10) is bended to an upper side, a body tube is released over a sleeve to expose a hook, and a switch(9) screwed to an upper side of the body tube is projected to the upper side of the case to be pressed. When the switch is projected by fire and being pressed to the downside, the hook presses the sleeve to exert pressure on an auxiliary spring, and the door lock is unlocked by a retraction of a spring(7).

Description

A door switching machine that works normally even in the event of a fire

1 is a block diagram of a typical door opener

2 is a perspective view of the door opener of the present invention

Figure 3a is an exploded perspective view of the main rotation gear and the bimetal shaft of the present invention

Figure 3b is a perspective view of the main rotation gear and the bimetal shaft assembly state of the present invention

Figure 4 is a perspective view of the assembled door lock and guide shaft of the present invention

Figure 5a, 5b is an exploded view and assembled state side view of the fixing plate and protruding spring of the present invention

Figure 6 is a perspective view showing the operation of the door opener of the present invention when a fire occurs

Figure 7a is a perspective view showing the operation of the fixed plate of the present invention when a fire occurs

Figure 7b is a side view showing the operation of the fixed plate of the present invention when a fire occurs

8 is a state in which the switch of the present invention is coupled to the case

Figure 9a is a perspective view of the door opener of the present invention opened

Figure 9b is a perspective view of the door opening and closing state of the present invention locked.

*** Explanation of symbols for the main parts of the drawing ***

1: DC geared motor 2: Main gear

3: camshaft 4: bimetal shaft

5: auxiliary shaft 6: door lock

6a: locking pin 6b: support plate

7: spring 8: fixing plate

9: switch 10: auxiliary bimetal shaft

11: guide shaft 16: terminals

20: case 26: auxiliary spring

29: support 30: sleeve

32: barrel 33: hook

34: door opener

The present invention relates to a door switch that operates normally even in the event of a fire, and more particularly, a door switch that allows the door lock to be opened and escaped by manual operation even when a printed circuit board (PCB) for operating the door switch due to the fire is lost. It is about.

In general, the electronic switch (including the digital door lock) installed and used indoors and outdoors is used as many types, such as password input or fingerprint recognition, voice recognition, as shown in Figure 1, the operation system of the electronic switch is almost the same. .

The actuating mechanism of the electronic switchgear is usually a small DC geared motor or a solenoid to open and close the door. The gear of the motor used here is usually made of PVC injection for the effect of noise and sound insulation. I produce it. However, when a fire occurs, the gear made of PVC is weak in heat resistance, so it melts inside the switch and loses its function as a door lock.

In addition, since most electronic door locks are equipped with electronic components inside a printed circuit board (PCB) and use general electricity or batteries as power sources, the electronic components are deformed or lost due to heat in the event of fire, and thus the door lock does not work. Escape to the outside becomes impossible.

In particular, the recently released door locks are designed and manufactured with a focus on security in case of theft and external intrusion. Therefore, the door lock is a fatal flaw in case of a fire, so it is impossible to escape. It can also cause injury to children and others.

The present invention has been made to solve the above-mentioned problems, even when the printed circuit board or the battery inside the door switch burns out so that the metal works normally so that it can be safely escaped in the event of a fire, Even if an artificial fire is generated from outside, the door lock does not open unless the switch between the internal controls is operated so that the security can be maintained.

Hereinafter, a configuration of a door opener that operates normally even in a fire occurrence of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the door opener 34 of the present invention seats a DC geared motor 1 that operates by an external input such as a password or a key on one side of a case 20 having a vent hole 12 formed therein. When the main shaft gear 2 engaged with the gear 2a coupled to the shaft of the DC geared motor 1 rotates and the bimetal shaft 4 is pushed by the cam shaft 3, the door lock 6 is spring 7. To lock while contracting. At this time, the auxiliary shaft 5 coupled to one of the main rotary gear 2 rotates the fixing plate 8 by the opposite action, and is configured to fix the lower end of the door lock 6.

When the door is opened, the main gear (2) engaged with the gear (2a) by the operation of the DC geared motor (1) rotates in the opposite direction, and when the bimetal shaft (4) is pulled forward, the auxiliary shaft (5) is pushed backward and the fixed plate (8) ) Is rotated in the opposite direction to gently unlock the lower end of the door lock 6 is configured to unlock.

The main rotary gear 2 and the gear 2a may use a pair of bevel gears or worms and worm gears according to embodiments.

The main rotary gear 2 and the bimetal shaft 4 meshing with the gear 2a of the DC geared motor 1 are constituted as shown in Figs. 3A and 3B. That is, the main rotary gear (2) is produced by injecting PVC, the center of the shaft 20 is coupled to the shaft (not shown) formed in the lower portion of the case 20, the holder of the shaft hole 18 and the bimetal shaft 4 to support when rotating ( 13 is fitted with a shaft projection (19) to which one of the cam shaft (3) and the bushing (15) bent by the c-shape and the bushing (15) fitted with the snap ring (14) are fitted and supported. The holder 13 of the bimetal shaft 4, one side of which is coupled to the camshaft 3, is formed by welding a brass tube, and the other hole is fixed with a snap ring 17 by inserting a terminal 16 made of brass. The terminal 16 is fitted into a hole 24 formed in the terminal holder 6c of the door lock 6. The bimetal shaft 4 is characterized in that it is configured to be bent by heat in the event of fire.

As shown in FIG. 4, the door lock 6 and the guide shaft 11 have a terminal 16 formed on the bimetal shaft 4 in front of the support plate 6b of the spring 7. A terminal holder 6c having a hole 24 inserted therein is formed in front of the support plate 6b, and in the rear, a restoring spring 7 is inserted along a hole (not shown) formed in the side wall of the case 20. The unlocking pin 6a is configured to enter and exit. In this case, when the door lock 6 operates, the guide shaft 11 is provided to stably slide by preventing vibrations generated from up, down, left and right.

 The guide shaft 11 is formed with a head to prevent the fall out on one side, the screw 22 is formed on the other side, the hole formed in the lower center on the base plate 6b of the door lock 6 (not shown) Guide the door lock 6 by screwing into the tab 23 formed on the side wall of the case 20, respectively, into the vibration-resistant rubber 21 on the guide shaft 11 to be configured to absorb shock and vibration It was.

As shown in FIGS. 5A and 5B, the fixed plate 8 coupled to the other side of the auxiliary shaft 5 having one side coupled to the main rotating gear 2 is fitted with the auxiliary shaft 5 bent at the c-shape on one side. A hole for fixing (not shown) is drilled, and a hole (not shown) for inserting the support 29 into the center thereof is drilled, and is formed in a roughly 자 shape.

In the coupling of the fixing plate 8, the auxiliary spring 26 and the bushing 27 are interposed between the bottom of the case 20 and the fixing plate 8, and then the bushing 28 is formed on the upper surface of the fixing plate 8 again. The screw 29 formed on the support 29 and the tab 25 formed on the bottom of the case 20 to be smoothly rotated while the support 29 is inserted downward, and the sleeve is supported on the support 29. Insert the 30 and insert the barrel 32 having a hook 33 having a structure such as a folding umbrella into the support 29 and then press the hook 33 into the sleeve 30 to complete the assembly.

The screw 31 formed on the upper portion of the barrel 32 is fastened to the female screw formed inside the switch 9, but as shown in FIG. 8, the switch 9 is seated on the upper portion of the case 20 and is disposed outside. The switch 9 applies a paint that changes color depending on the temperature, but in the center is painted a round fluorescent paint so that the color changes to red and the fluorescent light is emitted. To easily grasp the position of the switch (9).

In addition, an auxiliary bimetal shaft 10 having one side fixed to a side wall of a case 20 in which a vent hole 12 is formed in the upper locking jaw 35 of the barrel 32 inserted into the support 29 supporting the fixing plate 8. U-shaped groove (not shown) is configured to be inserted and caught.

When a fire occurs, heat of the fire is transmitted to the inside of the door opener 34 through the vent 12 of the case 20, and the bimetal shaft 4 is bent backwards by this heat, so that the terminal holder 6c of the door lock 6 is opened. The terminal 16 inserted into the hole 24 formed in the upper side of the crankshaft and the auxiliary bimetal shaft 10 abutting against the engaging jaw 35 of the barrel 32 are bent upwards, and the barrel 32 When the hook 33 is pulled out of the sleeve 30 and the hook 33 is exposed, the switch 9 screwed on the upper portion of the barrel 32 protrudes from the upper surface of the case 20 to be pressed.

When the switch 9 is protruded due to a fire, the hook 33 presses the sleeve 30 to compress the auxiliary spring 26 at the lower portion, and the fixing plate 8 is located at the bottom of the "A" part. The lock is released while the door lock 6 is retracted by the restoring elasticity of the spring 7 inserted in the locking pin 6a.

The door switch of the present invention described above pulls up the switch formed on the fixing plate which is mounted by the auxiliary shaft while bending the bimetal shaft supporting the door lock by the heat when the fire occurs and the auxiliary bimetal shaft is bent upward, and upwards to the case top. When the protruding switch is pressed, the fixing plate is placed on the lower end of the door lock. When the door lock is retracted by the spring's resilience, the locking device is released so that the door can be opened manually even when the PCB is lost due to fire. It has the effect of making an emergency escape.

In addition, the switch constituting the door opener of the present invention operates only in the event of a fire, and because it is located indoors, even if an artificial fire is generated from the outside for theft or intrusion, the switch cannot be operated, thereby maintaining security.

Claims (1)

In the door switch which opens and closes the door lock by operating the DC geared motor by password input or fingerprint recognition, The DC geared motor 1 is seated inside the case 20 in which the vent hole 12 is formed, and the gear 2a coupled to the shaft of the DC geared motor 1 and the main rotary gear 2 are engaged with each other. Configured to rotate the main rotary gear 2 forward and reverse; The cam shaft 3 and the spring 7 of the main rotary gear 2 are inserted into the locking pin 6a to couple the bimetal shaft 4 between the door locks 6, but to one side of the bimetal shaft 4. The terminal 16 coupled to the hole is inserted into the hole 24 formed in the terminal holder 6c of the door lock 6, and when the fire occurs, the bimetal shaft 4 is bent by heat, so that the terminal 16 is opened by the hole 24. Configured to omit from; The support 29 is interposed between the main rotary gear 2 and the fixed plate 8 connected to the auxiliary shaft 5 and the lower end of the case 20 by the auxiliary spring 26 and the bushing 27. After fixing with the lower end and screwed into the sleeve (30) and then insert the barrel (32) having a switch (9) formed on the support 29 into the support 29 to form a lower portion of the barrel (32) And the hook 33 is operated by elasticity so that the hook 33 is pushed into the sleeve 30 so that one side is fixed to the side wall of the case 20 by heat during a fire, and the other side is a barrel ( The auxiliary bimetal shaft 10 into which the U-shaped groove is inserted to be brought into contact with the engaging jaw 35 of the 32 is bent upward, and the hook 33 of the barrel 32 falls to the end of the sleeve 30 to the barrel 32. The formed switch 9 is configured to protrude to the upper surface of the case 20; When the switch 9 protrudes due to a fire, the hook 33 of the barrel 32 compresses the auxiliary spring 26 while pressing the sleeve 30, and the fixing plate 8 lowers the lower part of the door lock 6. When the door reaches the door lock (6) retracted by the resilience of the spring (7) charged in the locking pin (6a) retracted backwards, the door lock 6 is operated normally even in the event of a fire, characterized in that configured to be released.

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