KR100656802B1 - A auto cross device for incendiary - Google Patents

Abstract

An apparatus for automatically closing a fireproof door is provided to slim the whole size and improve the assembling and installing working performance by firstly assembling the motor at the motor bracket and then at the upper plate. An apparatus for automatically closing a fireproof door is composed of a shaft(101) horizontally installed at one side of a motor(130) to receive the power of the motor through a gear group(150) and to open and close the fireproof door; a ratchet wheel(122) formed at the upper and lower parts with an insertion pipe formed with plural grooves at the outer peripheral surface and a gear gear-combined with a fifth gear(155) adjacent to the gear group, and installed at the shaft; and a ratchet housing(124) containing an upper cylinder having a key groove at the inner peripheral surface, a ratchet hole radially formed toward the inside, and a lower cylinder consecutively assembled with a ratchet, a spring and a tap bolt. The motor is assembled at a motor bracket(140) and then at an upper plate(156b) of a gear case(156).

Description

Fire door automatic closing device {A AUTO CROSS DEVICE FOR INCENDIARY}

1 is a state in which the device according to the invention installed on the fire door,

2 is an internal structural diagram of a device according to the invention,

3 is an exploded perspective view of the ratchet part according to the present invention;

4 is a cross-sectional view of the combination of FIG.

5 is an exploded perspective view showing the installation structure of the motor according to the present invention.

* Explanation of symbols on the main parts of the drawings *

100: body 101: axis

101a: keyway 101b: key

101c: bushing 101d, 101e: bearing

102: first arm 103: second arm

104: bracket 105: fire door

106: door frame 107: limit switch

110 case 110a, 112a: bearing housing

111: fixing plate 111a: hole

112: upper cover 112b: motor housing

120: ratchet portion 122: ratchet wheel

122a: gear 122b: insertion tube

122c: home 124: ratchet housing

124a: Lower cylinder 124b: Ratchet hole

124c: Ratchet 124d: Protrusion

124e: Spring 124f: Tap Bolt

124h: keyway 130: motor

130a: motor shaft 130b: motor gear

132: motor case 132b: fixing bolt

140: motor bracket 140a: hole

140b: screw hole 140c: hole

150: gear group 151: first gear

152: second gear 153: third gear

154: fourth gear 155: fifth gear

156: gear case 156b: top plate

156c: lower plate 156d: hole

156e: screw hole

The present invention relates to an improved invention of Korean Patent No. 0517438, which automatically closes the fire door by a disaster prevention signal of a disaster prevention center when a fire occurs in a building. In particular, the axis of the fire door being opened and closed by receiving the power of a motor It allows for more precise and accurate operation, while the fire door opens and closes at various angles, the limit switch is placed on the door frame and the majority of the motor is located outside of the case, making the overall size of the device slim. In addition, the present invention relates to a fire door automatic closing device that enables the motor to be maintained in a more robust and stable state so that the reliability of the device, the assembly workability and the installation workability can be improved.

The device disclosed in the prior patent No. 0517438 (name: automatic fire door closing device) in addition to the basic advantage of automatically closing the fire door in the event of a fire does not lose the pressure in the smoke area, in addition to the process of closing and closing the fire door automatically After the fire, the fire door can be forced to open, and when the external force for opening is lost, the fire door is closed and the fire door is closed by the signal of the disaster prevention center, but the advantage of detecting the closed state and maintaining the state is However,

First, there was a problem that the fire door was not completely closed because the shaft was not operated correctly. Second, the assembly of the motor was difficult, and after the assembly, the play was caused by shaking, so that the power transmission was not accurate so that the limit switch was not operated precisely. The third problem is that the first support member in contact with the limit switch is arranged in the lower part of the shaft, while the motor is embedded in the apparatus and the overall size of the apparatus is increased. Problems with poor sex occurred.

The present invention is to improve the above problems, the object is to provide a more improved fire door automatic closing device.

In the fire door automatic closing device in which the axis of the fire door is opened and closed by receiving the power of the motor through the gear group is installed in parallel with one side of the motor, an insertion pipe having a plurality of vertical grooves formed on the outer circumferential surface thereof; The ratchet wheel is formed while the gear is coupled to the fifth gear adjacent to the gear group to form the same center up and down, and the upper cylinder has a key groove on the inner circumferential surface and radially on the outer circumferential surface. While a ratchet hole is formed, a ratchet housing formed by forming a ratchet, a spring, and a lower cylinder in which the end of the ratchet, the spring, and the tab bolt are sequentially assembled up and down in the same center for each ratchet hole is coupled to the ratchet wheel. And the motor is assembled to a motor bracket made of a plate, and then assembled to an upper plate of a gear case for fixing the gear group. As it is hayeoseo, to provide an automatic closing device in which the limit switch detects that the door panel is opened and closed to install the door frame.

Next, the present invention will be described in detail with reference to the drawings.

Figure 1 shows a fire door automatic closing device according to the present invention, the fire door automatic closing device body 100 is fixed to the upper wall of the door frame 105 of the fire door 106, the fire door 106 to the door frame 105 Limit switch 107 is installed to detect the opening and closing), the first arm 102 of the main body 100 is hinged with the second arm 103 is hinged to the bracket 104 of the fire door 106 To pull or push the second arm 103 so that the fire door 106 opens and closes.

The main body 100 has a top cover 112, as shown in FIG. 2, and the motor 130 and the shaft 101 are installed side by side perpendicular to one side inside the case 110, which is a cylindrical body of an empty rectangular parallelepiped. The gear group 150 is installed on the motor gear 130b of the motor 130, and the ratchet part 120 is installed on the shaft 101, while a bushing is disposed below the ratchet part 120. 101c) is built up.

Both sides of the case 110 are formed by the expansion plate 111 is formed of a plate body, a plurality of holes (111a) through the fixing plate 111 is easy to be fixed to the upper wall of the door frame 105. .

Bearing housings 110a and 112a are formed on the bottom surface of the case 110 and the upper cover 112 to face each other, and a rear portion of the motor 130 is accommodated on one side of the bearing housing 112a. The motor housing 112b is formed.

Bearings 101d and 101e are respectively installed in the bearing housings 110a and 112a, and the bearing 101d penetrates in a state where the lower portion of the shaft 101 is interviewed. The upper end of the shaft 101 is located.

One end of the first arm 102 is fixed to the lower end of the shaft 101, and the key groove 101a is formed on the upper wall surface of the shaft 101 as shown in FIG. 3 to engage the ratchet housing 124. The key 101b is coupled through the key groove 124h of the upper cylinder 124g.

The ratchet portion 120 arranged on the shaft 101 includes a ratchet wheel 122 and a ratchet housing 124 as illustrated in FIG. 3.

The ratchet wheel 122 is formed integrally with the insertion tube 122b in the upper portion, the gear 122a in the lower and the same center up and down, the insertion tube 122b has a smaller diameter than the gear 122a It is formed of a cylindrical body, a plurality of vertical grooves (122c) is formed on the outer peripheral surface, the through hole through which the shaft 101 is formed in the center is formed.

The grooves 122c are triangular in plan view, and 12 are formed at a uniform angle on the circumferential surface of the insertion tube 122b.

The ratchet housing 124 is formed integrally with the upper cylinder 124g and the lower cylinder 124a forming the same center up and down, the upper cylinder 124g is formed while forming a smaller diameter than the lower cylinder 124a The center of the lower cylinder 124a is formed with a through hole through which the shaft 101 can be penetrated, and a groove through which the insertion tube 122b of the ratchet wheel 122 is inserted is formed. .

Key grooves 124h are vertically formed on the inner circumferential surface of the upper cylinder 124g, and ratchet holes 124b are formed horizontally on the inner circumferential surface of the lower cylinder 124a, and are divided at uniform angles so that six The ratchet holes 124b are sequentially coupled to the ratchet holes 124c, the springs 124e, and the tab bolts 124f as shown in FIG. 4.

The front side of the ratchet 124c has a triangular shape in the same way as the groove 122c formed in the insertion tube 122b, and the protrusion 124d protrudes from the rear side so that the spring 124e is separated. To be prevented.

The motor 130 is first coupled to the motor bracket 140 as shown in FIG. 5, and then assembled to the top plate 156b of the gear case 156. The motor bracket 140 includes the motor 130. The hole 140a through which the motor shaft 130a passes is formed, and screw holes 140b of small diameter are formed in three places, and holes 140c are formed symmetrically at both ends.

A hole 156d corresponding to the hole 140a is formed through the upper plate 156b, and a screw hole 156e corresponding to the hole 140c is formed.

Accordingly, the fixing bolt 132b is tightened through the groove 132a of the motor case 132, and the motor 130 is first tightened by screwing the screw hole 140b of the motor bracket 140. After the motor bracket 140 is assembled, the motor bracket 140 assembled with the motor 140 is interviewed with the top plate 156b, and then the fixing bolt 140d is mounted through the hole 140c. By tightening the screw hole 156e, the motor 140 can be assembled to the top plate 156b conveniently, firmly and stably.

The upper plate 156b cooperates with the lower plate 156c to face the gear group 150, and the gear group 150 is formed on the motor shaft 130a. Is rotated, the first, second, third, fourth, fifth (151), 152, 153, 154, 155 to rotate the gear 122a of the ratchet wheel 122 is sequentially Gear is engaged.

In the present invention configured as described above, when a fire occurs in a state in which the fire door 106 is opened, the motor 130 is operated by the disaster prevention signal of the disaster prevention center, and the power of the motor 130 is controlled by the motor gear 130b, The ratchet part 120 geared to the fifth gear 155 through the first gear 151, the second gear 152, the third gear 153, the fourth gear 154, and the fifth gear 155. Is transmitted to the gear 122a, and the entire ratchet wheel 122 is rotated as the gear 122a of the ratchet part 120 is rotated. As a result, the shaft 101 is rotated so that the first arm 102 is rotated. ) So that the fire door 106 is closed by the second arm 103.

In the above, as the ratchet wheel 122 is rotated, the ratchet 124c, which is located in the groove 122c of the insertion tube 122b, is released from the groove 122c while retracting the spring 124e at the rear side, and then again. The process of being inserted into the groove 122c is repeated to make the shaft 101 rotate more smoothly.

In the above, the groove 122c into which the ratchet 124c is recessed becomes a triangular shape, while the distal end portion of the ratchet 124c also becomes a triangular shape, so that the ratchet 124 is more than the ball bearing disclosed in the prior art patent No. 0517438. By applying a small force to the supporting spring 124e and reducing the contraction of the spring 124e, the spring 124e smoothly emerges from the groove 122c of the insertion pipe 122b, and fixes and tightens the tab bolt 124f. Discomfort to be prevented, and the disadvantage that the ball bearings are stuck in the bearing grooves do not operate smoothly.

And the groove 122c is divided into 12, when the fire door 106 is opened, the angle of the fire door 106 can be variously adjusted by 30 ㅀ.

In the above, the limit switch 107 is provided in the door frame 105 of the fire door 106, the power is cut off well, like the limit switch disclosed in the prior patent No. 0517438 by the repeated opening and closing of the fire door It is also possible to eliminate the disadvantage that the gear gap does not completely close or the power is not cut off.

In the above, the limit switch 107 is installed in the door frame 105, and most of the motor 130 is located in the motor housing 112b protruding outside the case 110, thereby making the overall size of the device slim. Being able to make it slim can improve the appearance while improving installation workability.

In addition, when the motor 130 is installed, the motor 130 is first assembled to the motor bracket 140 and then assembled to the upper plate 156b of the gear case 156, thereby making the motor 130 more visible. It will be able to maintain the assembly state in a solid and stable state.

As described above, according to the present invention, the latch portion is installed on the shaft to open and close the fire door by receiving the power of the motor, so that the door can be operated more precisely and accurately, while the fire door opens and closes at various angles, and the limit switch has In the door frame, most of the motor is located outside of the case to make the overall size of the device slim, and the motor is assembled to the motor bracket first and then to the top plate, making it more robust and By the effect of maintaining the assembled state in a stable state, there is an effect of improving the reliability of the apparatus, the assembly workability and installation workability.

Claims (3)

The shaft 101 for receiving the power of the motor 130 through the gear group 150 to open and close the fire door 106 constitutes a fire door automatic closing device installed in parallel to one side of the motor 130. In A ratchet wheel having upper and lower portions of the insertion pipe 122b having a plurality of vertical grooves 122c formed on an outer circumferential surface thereof, and a gear 122a geared to an adjacent fifth gear 155 of the gear group 150. The upper cylinder 124g having the key groove 124h on the inner circumferential surface, and the ratchet hole 124b radially inward on the outer circumferential surface are formed so that the 122 is arranged on the shaft 101, and the ratchet hole 124b is formed. The ratchet housing 124 is formed by a ratchet housing 124 formed at an upper and a lower end of the ratchet 124c, the spring 124e, and the tab bolt 124f in which upper and lower ends are in contact with the groove 122c. Fire door automatic closing device, characterized in that by being coupled to (122). According to claim 1, wherein the motor 130 is to be assembled to the motor bracket 140 made of a plate body, and then to be assembled to the top plate 156b of the gear case 156 to fix the gear group 150. Fire door automatic closing device characterized in that the. A fire door automatic closing device according to claim 1, characterized in that a limit switch (107) is installed on the door frame (105) for detecting that the fire door (106) is opened and closed.

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