KR101225960B1 - The driving mechanism, which make door close automatically by using cam gear on firing - Google Patents

Abstract

The present invention relates to a driving device that automatically closes a door in case of fire, which allows the door to be opened and closed very easily by hand, but in the event of a fire.
Therefore, the present invention is provided on the reduction gear motor 20 provided on one side of the housing 10 and the worm shaft 31 directly connected to the motor shaft 21 of the reduction motor 20 is supported by the housing 10. The worm 30 is provided to be rotated, the worm wheel gear 40 is provided on one side to be interlocked with the worm 30, and the worm wheel gear 40 is interlocked with the worm shaft 31 in a direction perpendicular to the worm shaft 31. It is provided on the upper end of the cam gear shaft 51 is provided to stand up, the cam gear 50 having a concave cam groove portion 52 on one side, and the door interlocking shaft provided in parallel with the cam gear shaft 51 ( 61) provided with an intermittent interlocking gear 60 provided at the upper end portion, the intermittent interlocking gear 60 is usually at a position facing the cam groove 52, and the cam gear 50 at the time of rotation of the cam gear 50; The door opening and closing means (90, 90 ') by the rotation of the door interlocking shaft (61) is engaged to engage the gear teeth (53) of the (53), the The touch hole 71 is provided on the cam gear shaft 51 which is transmitted and rotated by the drive of the speed motor 20, and the switch piece of the limit switch 72 is made every time the touch hole 71 is rotated. A signal is applied to the controller 70 by pressing the 73 so that the driving of the reduction motor 20 is stopped by the controller 70.

Description

The driving mechanism, which make door close automatically by using cam gear on firing}

The present invention relates to a device for automatically closing a door such as a window or a fire door in the event of a fire, and more particularly, a fire that automatically closes the door only in case of fire, while being able to open and close the door very easily and normally. It relates to a drive device using a cam gear that automatically closes the door.

In general, the prior art for forcibly opening and closing the window in case of fire is disclosed in Republic of Korea Patent Publication No. 10-1997-0011808 and Utility Model No. 20-0215954, Patent No. 10-0814745 and Patent An automatic switchgear of a flue window has been disclosed, such as No. 10-1125848.

However, the above-mentioned prior arts have a disadvantage in that the load is generated when the door is normally opened and closed due to the complicated structure, and there is a problem in that a fire occurs after many years after the installation of the device due to the high risk of failure. There is a problem that can not perform its original function.

In the case of the Republic of Korea Patent No. 10-1187938, the reduction ratio of the reduction motor, which is the power source for driving, is assumed to be 1:30.

However, the windows are designed to open and close easily, but they are installed in the building, but the load is generated by various factors such as manufacturing tolerances, so that they are opened and closed in many cases.

Therefore, in the above case, the reduction ratio is weak with the power of the reduction motor with 1:30, so the structure that allows the interlocking gears to work together causes a problem that the window does not automatically close even if a fire occurs due to the large load. By doing so, there is a problem in practical use.

In addition, since the interlocking gears are linked to the reduction motor, which is difficult to rotate the motor shaft by hand, it is very difficult to open and close the window by hand because the load is large and a lot of force is required to open and close the window by hand. It involves the problem of closing or opening.

KR 10-1997-0011808 B1 1997.07.16 KR 20-0215954 Y1 2001.03.15 KR 10-0814745 B1 2008.03.19 KR 10-1125848 B1 B1 2012.03.28 KR 10-1187938 B1 2012.10.04

An object of the present invention is to provide a drive device using a cam gear that automatically closes the door in the event of fire, which allows the door to be closed automatically only in the event of fire, while being able to open and close the door very easily in normal times.

Another object of the present invention is to enable the door to be normally closed even after a long time elapses after installation by ensuring that there is no failure of the driving device to automatically open and close the door in case of fire even if the door is opened and closed by hand for a long time. have.

Still another object of the present invention is that it is possible to open and close the door very easily and effortlessly by opening and closing the door by hand, even when using a deceleration motor having a very high reduction ratio. The goal is to improve product reliability.

The present invention includes a reduction motor provided on one side of the housing, a worm provided on the worm shaft directly connected to the motor shaft of the reduction motor, and supported on the housing to be rotated, and a worm wheel gear provided on one side in cooperation with the worm. And a cam gear shaft that is interlocked with the worm wheel gear and provided to stand in a direction orthogonal to the worm shaft, and has a cam gear having a concave cam groove portion at one side and a door interlock provided in parallel with the cam gear shaft. And an intermittent interlocking gear provided at the upper end of the shaft, and when the deceleration motor is stopped, the intermittent interlocking gear is positioned at a position opposite to the cam groove of the cam gear so that the intermittent interlocking gear can be idle and the cam gear is operated by the decelerating motor. Is rotated, the intermittent interlocking gear is engaged with the gear value of the cam gear, and the door opening and closing means is interlocked by the rotation of the door interlocking shaft. It is characterized by what is achieved.

Another wheel gear shaft is provided between the worm shaft and the cam gear shaft so that the worm wheel gear is fixed to the wheel gear shaft, and the rotational force of the worm wheel gear is provided at the lower gear of the cam gear shaft. Another feature is that the cam gear is rotated by allowing power to be transmitted.

And the present invention is provided with a reduction motor provided on one side of the housing, the worm shaft is provided on the worm shaft that is directly connected to the motor shaft of the reduction motor is supported on the housing and rotated, and is provided to stand in a direction perpendicular to the worm shaft A cam gear fixed to the upper end of the cam gear shaft and having a concave cam groove portion at one side thereof, and an intermittent interlocking gear fixed to be interlocked with the cam gear at an upper end of the door interlocking shaft provided in parallel with the cam gear shaft; And an idle worm wheel gear installed on the door interlocking shaft so as to be idle with the door interlocking shaft and receiving power from the worm, and an interlocking gear fixed to the cam gear shaft to receive the rotational force of the idle worm wheel gear. When the deceleration motor is stopped, the intermittent interlocking gear is positioned at the position opposite to the cam groove of the cam gear, and the intermittent interlocking gear is idling. Neunghage is, the cam gear when the motor rotates in the deceleration operation to be made to intermittently mesh with the interlocking gear is rotated interlocked door opening and closing means known by a door interlock pivot shaft to the gear teeth of the cam gear to the other features.

The door interlocking shaft is characterized in that the idle worm wheel gear is further provided with an air power control means for reducing the rotational speed of the door interlocking shaft in the state in which the idle worm wheel gear is engaged with the worm.

The air power adjusting means is inserted into a shaft hole having a screw opening to the outside in the longitudinal direction of the door interlocking shaft, and a flow hole provided at a point where the gear inner circumferential surface of the idle worm wheel gear is positioned in contact with the gear inner circumferential surface. A shaft having a curved surface portion, an adjusting shaft having a screw head fastened to the screw portion and inserted into the shaft hole, and an eccentric shaft rod centered on a rod center line eccentric with the shaft center line at the lower end of the adjusting shaft, The pressure port is pressurized by the eccentric shaft rod to be eccentrically rotated by another feature that is made to press the inner circumferential surface of the idle worm wheel gear.

The touch gear is provided on the cam gear shaft which is transmitted and rotated by the drive of the reduction motor. When the touch sphere is rotated once, a signal is applied to the control unit by pressing the switch piece of the limit switch so that the control unit of the reduction motor Another feature is that the driving is controlled to be stopped.

According to the present invention, when opening and closing a door such as a window or a fire door by hand, only the intermittent interlocking gear is idling so that the adjacent cam gear or other gears and the reduction motor are not interlocked so that the load is not applied at all. It's easy to open and close, and it's very easy to open and close the door.

Therefore, the present invention has the effect of being able to employ a deceleration motor having a high reduction ratio, so that the door can be closed well by the driving force of the deceleration motor having a good power even if the door is operated stiffly and does not close well.

In addition, the present invention can be controlled so as not to open suddenly when opening and closing the door by hand has an effect that can prevent the noise and safety accidents generated when the door is closed in advance.

And even if the door is normally opened and closed for a long time by hand, only the intermittent interlocking gear is idling and it does not interlock with other gears. Even after the fire has elapsed, since the normal door closing operation is promoted and the proper function is achieved, product reliability is greatly improved.

1 is a perspective view showing the main part of a drive device according to a first embodiment of the present invention;
FIG. 2 is a vertical cross-sectional view of the drive device shown in FIG. 1; FIG.
3 is a plan configuration diagram of the drive device shown in FIG. 1;
(A), (b) is a planar action figure explaining the main effect of this invention,
Figure 5 is a schematic block diagram showing a door opening and closing means for the window according to the present invention,
6 is a perspective view showing a main portion of a driving apparatus of a second embodiment of the present invention;
7 is a longitudinal cross-sectional view of the drive device shown in FIG. 6;
8 is a plan configuration diagram of the drive device shown in FIG. 6;
9 is an installation state of the second embodiment of the present invention carried out on the door opening and closing means for the window,
10 is a front view of an installation state in which the second embodiment of the present invention is implemented in the door opening and closing means of the fire door,
11 is a plan view showing the operation of the state in which the present invention is implemented in the door opening and closing means of the fire door,
12 is an enlarged one side view of the portion “Y” of FIG. 10;
13 is a perspective view showing a main portion of a drive device according to a third embodiment of the present invention;
14 is a longitudinal cross-sectional view of the drive device shown in FIG. 13;
FIG. 15 is a plan configuration diagram of the drive unit shown in FIG. 13;
16 is an exploded cross-sectional view of the air power control means according to the present invention;
17 is a cross-sectional view of the air power control means according to the present invention,
18 (a) and 18 (b) are sectional views taken along the line Z-Z 'of FIG. 17 illustrating the operation of the air power adjusting means according to the present invention.

When described in more detail on the basis of the accompanying drawings the preferred embodiment of the present invention.

1 to 3 showing the first embodiment, the present invention includes a reduction motor 20 fixed to one side of the housing 10.

In addition, the worm shaft 31 is provided on the worm shaft 31 directly connected to the motor shaft 21 of the reduction motor 20 is supported by the housing 10 is provided with a worm 30 is provided to rotate, the reduction motor 20 When the worm 30 is driven, the worm 30 is rotated. Reference numeral 11 denotes a bearing, and some bearings 11 omit the reference figure.

And the present invention has a worm wheel gear 40 is provided on one side to be interlocked with the worm 30 and the worm wheel gear 40 is a cam gear shaft provided to stand in a direction orthogonal to the worm shaft 31 (51) It is fixed to the lower end and is configured to transmit the rotational force of the worm wheel gear 40 to the cam gear shaft (51).

In addition, the cam gear 50 having a concave cam groove portion 52 is fixed to the upper end of the cam gear shaft 51 is provided.

In addition, the intermittent interlocking gear 60 is fixed to the upper end of the door interlocking shaft 61 provided in parallel with the cam gear shaft 51.

The cam gear 50 and the intermittent interlocking gear 60 are formed as idle gears, and the gear tooth angle is preferably 4-5 ° for good interlocking. However, in some cases, it may be possible to have different gear tooth angles.

Therefore, the intermittent interlocking gear 60 is positioned at the position opposite to the cam groove part 52 when no fire occurs, and when the cam gear 50 rotates due to the fire, the cam gear 50 of the cam gear 50 rotates. It engages with the gear teeth 53, and it is comprised so that the well-known door opening / closing means 90 and 90 'as shown in FIG. 5 and FIG. 10 may be interlocked by rotation of the door interlocking shaft 61. As shown in FIG.

As shown in FIG. 4, the present invention includes a touch hole 71 on a cam gear shaft 51 which is transmitted and rotated by driving of the reduction motor 20, and at the time of one rotation of the touch hole 71. FIG. Each time the switch piece 73 of the limit switch 72 is pressed and a signal is applied to the control part 70, the control part 70 is controlled to stop the drive of the reduction motor 20. FIG.

Meanwhile, the present invention may cover the cam gear 50 and the intermittent interlocking gear 60 in a case (not shown) so as to be concealed in FIG. 2 and FIG. 3, or the chain chamber beneath the housing 10. May be provided.

Therefore, in the present invention, the door opening and closing means 90 provided at the lower end of the door interlocking shaft 61 is provided in the window WD shown in FIG. 5, or the door opening and closing means 90 provided in the fire door PD shown in FIG. 10. ') Will be connected. Since the door opening and closing means 90 and 90 'are already known, detailed drawings or descriptions will be omitted, and only portions that need explanation in the present invention will be described.

Therefore, the first embodiment of the present invention is preferably provided so that the lower end of the door interlocking shaft 61 is used in conjunction with the door opening and closing means 90 provided in the window (WD) shown in FIG. When used to be connected to the door opening and closing means 90 is described as an embodiment as follows.

Referring to Figure 5, the chain sprocket 91 is fixed to the lower end of the door interlocking shaft 61 of the present invention, the chain 92 in the chain chamber 12 is provided in the lower housing 10 chain sprocket 91 It is configured to guide to the window (WD) is connected to, and the door opening and closing means 90 of such a window (WD) is a known known.

Therefore, the present invention normally opens and closes the window WD by hand.

At this time, whenever the window WD is opened and closed, the chain 92 is pulled or pushed in so that the chain sprocket 91 is rotated clockwise or counterclockwise, thereby causing the door interlocking shaft 61 to interlock. It becomes the state to become.

Therefore, the intermittent interlocking gear 60 is rotated according to the rotation of the door interlocking shaft 61. As shown in FIG. 4 (a), the intermittent interlocking gear 60 is the cam groove part of the cam gear 50. As it is in a position opposite to 52), it only idles in place.

That is, when the window WD is normally opened and closed by hand, the intermittent interlocking gear 60 is positioned at the position where the intermittent interlocking gear 60 faces the cam groove portion 52 of the cam gear 50 and the cam gear 50. The gear tooth 53 is not in engagement with the state because it is only idle in place.

Therefore, when opening and closing the window (WD) by hand, there is no load, so it is easy to open and close the window (WD) without any difficulty.

In order to facilitate the understanding of the present invention, in the past, the gears are engaged to the reduction gear motor, so that the load is applied when the window WD is opened and closed, which is very difficult to open and close the window WD. Since the 60 is not engaged with the gear teeth 53 of the cam gear 50, only idling is performed in place, so that no load is applied, so that the window WD can be opened and closed by hand very conveniently. will be.

That is, in the case where the fire does not occur normally, as shown in FIG. 4A, the intermittent interlocking gear 60 is in a position opposite to the cam groove portion 52 of the cam gear 50. In the state, the switch piece 73 of the limit switch 72 is in a pressurized state by the touch hole 71.

Therefore, when a fire occurs in the room, the fire sprinkler combined fire detector 80 installed in the indoor ceiling applies a fire occurrence signal to the control unit 70, thereby reducing the motor 20 by the command of the control unit 70. ) Will be driven.

When the reduction motor 20 is driven, as the worm 30 is rotated, the worm wheel gear 40 is rotated so that the cam gear 50 fixed to the cam gear shaft 51 is rotated.

Therefore, as shown in FIG. 4B, the interlocking gear 60 is engaged with the gear tooth 53 of the cam gear 50 so that the door interlocking shaft 61 is rotated.

Therefore, as shown in FIG. 5, as the chain sprocket 91 fixed to the door interlocking shaft 61 is rotated in the clockwise direction, the chain 92 is pulled in the direction of the chain chamber 12 to the inside of the chain chamber 12. As the window (WD) is pulled in as it enters, the window (WD) is automatically closed and closed.

In addition, the window (WD) is closed as described above is that the cam gear 50 is to rotate one rotation, and therefore the touch hole 71 also rotates one rotation as described above When rotation of one rotation is completed, at this time, as shown in FIG. 4A, the touch hole 71 presses the switch piece 73 of the limit switch 72 again to send a signal to the controller 70. Will be sent.

Therefore, the control unit 70 receiving the signal of the limit switch 72 stops the drive of the reduction motor 20, and thus the rotation of the cam gear 50 is stopped, thus the cam gear 50 When the motor stops after one rotation, the cam groove portion 52 is stopped at a position opposite to the intermittent interlocking gear 60, as shown in FIG.

Therefore, even when the window WD is automatically closed when a fire occurs, the intermittent interlocking gear 60 is opposed to the cam groove portion 52 of the cam gear 50 as shown in FIG. This will allow you to reopen the window by hand.

In the present invention, not only the touch port 71 and the limit switch 72 for transmitting a signal to the control unit 70 are necessarily necessarily employed but the signal to the control unit 70 so that the cam gear 50 can be stopped after one rotation. In some cases, other switches or other means may be employed.

Meanwhile, as shown in FIG. 5, a detection sensor 81 is installed in the chain chamber 12 to detect a state in which the chain 92 is completely retracted, and a signal is sent to the control unit 70 so that the window 70 is fired. The controller 70 may drive the reduction motor 20 only when it is open. In this case, the detection sensor 81 is not necessarily installed as described above, but may be installed in a window or window frame in some cases, and in other cases, other means or structures may be installed.

6 to 9 show a second embodiment of the present invention.

In the second embodiment, the rotational force of the reduction motor 20 is transmitted through the worm 30 and the war worm wheel gear 40, and the rotational force of the war worm wheel gear 40 is connected to the reduction gear 540. The rotation speed is to be decelerated in the process to be transmitted through so that the power can be transmitted.

Therefore, the reduction gear motor 20 provided on one side of the housing 10 and the worm shaft 31 directly connected to the motor shaft 21 of the reduction motor 20 are supported on the housing 10 and rotated. The presence of the worm 30 is the same as in the first embodiment.

In addition, as shown in the first embodiment, a cam gear 50 having a concave cam groove portion 52 on one side is provided at an upper end of the cam gear shaft 51 provided to stand in a direction perpendicular to the worm shaft 31. The intermittent interlocking gear 60 is provided at the upper end of the door interlocking shaft 61 provided in parallel with the cam gear shaft 51.

And another wheel gear shaft 41 between the worm shaft 31 and the cam gear shaft 51 to fix the worm wheel gear 40 to the wheel gear shaft 41. The rotational force of the um wheel gear 40 is configured to allow the cam gear 50 to rotate by transmitting power to the deceleration interlocking gear 54 provided at the lower end of the cam gear shaft 51.

The second embodiment is the only difference between the first embodiment and the driving force so that the rotational speed of the war worm wheel gear 40 is transmitted through the deceleration interlocking gear 54 so that the power can be transmitted. Since the principle is the same as in the first embodiment, a detailed description of the operation will be omitted here.

Therefore, the driving device of the second embodiment is provided with a chain sprocket 91 at the lower end of the door interlocking shaft 61 as shown in FIG. 9 to the door opening and closing means 90 installed in the window WD as shown in FIG. Can be used in conjunction.

However, since the rotational speed of the cam gear 50 is reduced and rotated than the first embodiment, the driving device of the second embodiment is provided in the fire door PD having a short stroke distance for opening and closing the door as shown in FIG. It is preferable to be connected to the known door opening and closing means 90, but may be used to be connected to the door opening and closing means 90 'provided in the window WD.

10 and 11 show that the present invention is used to be installed in the fire door (PD), the door interlocking shaft 61 of the device of the present invention the image of the door arm device 93 is provided on the top of the fire door (PD) Of the lower arm (94,95) is installed to be fixed to the upper arm (94). Since the door arm device 93 is a device known to prevent the door from being hardly closed, detailed internal drawings and descriptions thereof will be omitted.

Therefore, when no fire occurs, the intermittent interlocking gear 60 is in a position opposite to the cam groove portion 52 of the cam gear 50 as shown in FIG. 4 (a). When the fire door (PD) is opened and closed by hand, the upper and lower arm bands (94, 95) rotate while the door interlocking shaft (61) is rotated, and the intermittent interlocking gear (60) is idle. Since no load is applied, the fire door (PD) can be opened and closed easily by hand.

And when a fire occurs in the state that the fire door (PD) is open as shown in the virtual line of Figure 11 as shown in Figure 4 (b) the fire occurs in the fire sprinkler combined fire detector 80 installed on the indoor ceiling As the signal is applied to the control unit 70, the control unit 70 drives the reduction motor 20, and as a result, the worm wheel gear 40 as the worm 30 is rotated by the driving of the reduction motor 20. ) Rotates the cam gear 50 fixed to the cam gear shaft 51.

Therefore, the interlocking gear 60 is engaged with the gear tooth 53 of the cam gear 50 so that the door interlocking shaft 61 is rotated so that the upper arm 94 is clocked as shown in the solid line of FIG. The lower arm 95 is pulled by rotating in the direction so that the fire door PD is automatically closed.

At this time, the touch hole 71 also rotates by one rotation, and as shown in FIG. 4A, the touch hole 71 presses the switch piece 73 of the limit switch 72 again, thereby controlling the control unit ( 70 is sent to the signal, and thus the control unit 70 receives the signal of the limit switch 72 is to stop the drive of the reduction motor 20 to stop the rotation of the cam gear 50, As the cam gear 50 is stopped after one rotation, the cam groove portion 52 is stopped in the rotated state so that the portion of the cam groove portion 52 is opposite to the intermittent interlocking gear 60.

Therefore, even when the fire door PD is automatically closed in the event of a fire, the intermittent interlocking gear 60 is opposed to the cam groove portion 52 of the cam gear 50 as shown in FIG. By the fire door (PD) can be easily opened and closed again by hand.

And as shown in Figure 11 installs a detection sensor 81 for detecting the position of the lower arm 95 in the door arm device 93 to detect the open state of the fire door (PD) and sends a signal to the control unit 70 In this case, the control unit 70 may drive the reduction motor 20 only when the fire door PD is opened in case of fire, and the detection sensor 81 is not necessarily installed as described above. It can also be installed in the part, and in other cases, other means or structures may be installed.

On the other hand, as shown in Figs. 10 and 12, the fire door PW may or may not include the horseshoe legs 96. Therefore, when the horseshoe leg 96 is provided, as shown in FIG. 12, the horseshoe leg 96 has a roller 97 having a straight surface 98 on one surface thereof, thereby forcing the fire door PD to be forcibly pulled in the event of a fire. It is preferable that the roller 97 moves by rolling so that the fire door PD can be closed. The horseshoe leg 96 is not necessarily made of the above structure, but may be made of a different structure in some cases.

In the present invention, when opening and closing a door such as a window (WD) or a fire door (PD) by hand, only the intermittent interlocking gear 60 is idling so that it is not interlocked with other gears or the reduction motor 20. Reduction motor 20 having a may be employed. It has been experimented that it is desirable to have the reduction motor 20 having a reduction ratio of 1: 100 preferably employed.

Therefore, when the reduction gear motor 20 having a high reduction ratio is adopted, the door may be opened by the driving force of the reduction gear motor 20 having a good force even if the window WD or the heavy fire door PD are operated stiffly and do not close well. Because it is closed, the door can be closed well.

In order to facilitate the understanding of the present invention, in the past, when the door was opened and closed by hand, the gears and the reduction motor were interlocked so that the motor shaft was rotated by hand force because the hand opening and closing force was transmitted to the motor shaft of the reduction motor. A reduction motor having a relatively small reduction ratio with a reduction ratio of 1; 30 should be employed.

Therefore, the force of the deceleration motor for forcibly opening the window is small, which causes a problem that the window could not be closed automatically because of the stiff operation.

However, the present invention can open and close the door by hand force even when employing the reduction motor 20 having a large reduction ratio of 1: 100 as mentioned above, the reduction motor 20 in closing the door automatically in case of fire Because of the high power of the tightly opened windows (WD) and heavy fire doors (PD) will be closed properly.

13 to 15 show a third embodiment of the present invention.

The third embodiment is provided in the reduction gear motor 20 provided on one side of the housing 10 and the worm shaft 31 directly connected to the motor shaft 21 of the reduction motor 20 in the housing 10. It is to be made in the same manner as in the first embodiment to have the worm 30 supported and pivotally provided.

In addition, the cam gear 50 having a concave cam groove portion 52 is fixed to the upper end of the cam gear shaft 51 provided to stand in the direction orthogonal to the worm shaft 31 is also fixed to the first It is made similarly to the Example.

In addition, the intermittent interlocking gear 60 is provided in the same manner as the first embodiment so as to be interlocked with the cam gear 50 at the upper end of the door interlocking shaft 61 provided in parallel with the cam gear shaft 51.

However, in the third embodiment, the idle worm wheel gear 400 is installed on the door interlocking shaft 61 so that the door interlocking shaft 61 and the mutual interlock can be rotated, and the idle worm wheel gear 400 is the worm 30. It is supposed to receive power from.

The idle worm wheel gear 400 is not rotated by itself, but rotates as it is revolved about the door interlocking shaft 61 by receiving the power of the worm 30 in a state in which the door interlocking shaft 61 is not rotated. In order to help the understanding of the present invention, it will be referred to as an orbital worm wheel gear 400.

Therefore, the idle worm wheel gear 400 flows in the longitudinal direction of the door interlocking shaft 61 by being installed between the release preventing protrusion 62 and the bearing 11 formed integrally with the door interlocking shaft 61. It is not supposed to be.

However, the idle war worm wheel gear 400 is installed so as not to flow in the longitudinal direction of the door interlocking shaft 61 is not necessarily implemented as described above, in some cases idle idle worm wheel gear 400 is interlocked with the door It is also possible to implement other structures or means to prevent the shaft 61 from flowing in the longitudinal direction. On the other hand, the support structure for supporting the bearing 11 is omitted in order to help the understanding of the present invention.

Therefore, in the present invention, the rotational force of the idle worm wheel gear 400 is transmitted to the interlocking gear 540 fixed to the cam gear shaft 51.

In the state where the reduction motor 20 is stopped, as shown in FIG. 15, the intermittent interlocking gear 60 is positioned at the position opposite to the cam groove 52 of the cam gear 50, and the intermittent interlocking gear 60 is idling. When the cam gear 50 is rotated by operating the reduction motor 20, the intermittent interlocking gear 60 is engaged with the gear tooth 53 of the cam gear 50 to engage the door interlocking shaft 61. By the rotation of the known door opening and closing means (90,90 ') is made to interlock.

As shown in FIG. 9, the driving device of the third embodiment is provided with a chain sprocket 91 at the lower end of the door interlocking shaft 61 and interlocks with the door opening and closing means 90 installed in the window WD as shown in FIG. 5. Can be used.

In addition, since the cam gear shaft 51 may be rotated by decelerating the diameter or the number of gear teeth of the idle worm wheel gear 400 and the interlock gear 540, the door is opened as shown in FIG. The closing stroke may be connected to the known door opening and closing means 90 'provided in the short fire door PD.

Therefore, as described above, the door interlocking shaft 61 is provided with a chain sprocket 91 at the lower end of the door interlocking shaft 61 and the door interlocking shaft 61 is used to be interlocked with the door opening and closing means 90 installed in the window WD. Since the embodiment to be used by connecting to the known door opening and closing means (90 ') provided in the fire door (PD) is the same as already described above will be omitted herein.

Accordingly, since the intermittent interlocking gear 60 is in a position opposite to the cam groove portion 52 of the cam gear 50 as shown in FIG. 15, when no fire occurs, the door interlocking shaft 61 is used. When the chain sprocket 91 or the upper arm 94 of the door opening and closing means 90 and 90 'connected to be interlocked with the lower end of the door interlocking portion 61 is rotated.

At this time, the idle war worm wheel gear 400 is not rotated because it is engaged with the war worm 30 in a state that is installed to be placed between the separation preventing projection 62 and the bearing 11 as shown in Figure 14 and 17. Will not.

Therefore, since the idle war worm wheel gear 400 is in a stopped state, only the interlocking gear 60 fixed to the door interlocking shaft 61 and the upper end thereof is idle, and thus the intermittent interlocking gear 60 idles. Since no load is applied, it is easy and very easy to open and close the window (WD) or the fire door (PD) by hand.

However, since the door interlocking shaft 61 is rotated too quickly because no load is applied, the door interlocking shaft 61 may open and close too suddenly when the window WD or the fire door PD is opened and closed by hand.

Therefore, the present invention may further be provided with the air power control means 63 to control the rotational speed of the door rotation shaft 61 in the door interlocking shaft 61.

14, 16 and 17, the air power control means 63 is provided with a shaft hole 64 having a threaded portion (64a) open to the outside in the longitudinal direction of the door interlocking shaft (61).

In addition, the shaft hole 64 is configured such that the flow hole 65 is provided at the point where the gear inner peripheral surface 410 of the idle worm wheel gear 400 is located.

The pressure hole 66 having a curved portion 66a in contact with the gear inner peripheral surface 410 is inserted into the flow hole 65.

In addition, a screw head portion 67a fastened to the screw portion 64a is provided to have an adjustment shaft 67 inserted into the shaft hole 64, and the lower end of the adjustment shaft 67 has an axial center line K and It is configured to be integrally provided with an eccentric shaft bar (68) formed in a circular shape around the rod center line (S) to be eccentric.

Therefore, when the eccentric shaft rod 68 is rotated eccentrically about the axial center line K when rotated in the circumferential surface direction of the control shaft 67, the pressure port 66 is pressed, the gear of the idle worm wheel gear 400 It is made to pressurize the inner circumferential surface 410.

And to rotate the adjustment shaft 67 in the circumferential surface direction is to rotate the screw head portion 67a of the state coupled to the screw portion 64a by using a tool such as a driver.

Therefore, when the screw head portion 67a is artificially forcibly rotated in the left direction or the right direction, the adjustment shaft 67 is rotated to move in the longitudinal direction. In this case, the eccentric shaft rod 68 is formed to have a long length. Even if the adjusting shaft 67 is rotated to move in the longitudinal direction, the eccentric shaft rod 68 is made to smoothly press or release the pressure port 66.

Artificially rotating the adjusting shaft 67 in the left or right direction using a tool is performed when the idle worm wheel gear 400 is engaged with the worm 30 and is stopped.

Therefore, referring to Figure 18 describes the operation of the air power control means 63 as follows. Meanwhile, in FIG. 18, the distance between the inner circumferential surface 410 of the idle worm wheel gear 400 and the outer circumferential surface of the door interlocking shaft 61 is largely illustrated in FIG. 18 to actually understand the present invention.

Therefore, referring to FIG. 18A, when the adjusting shaft 67 is rotated counterclockwise (left), the eccentric shaft rod 68 is rotated eccentrically so that the pressure port 66 is positioned. Since the shaft hole 64 is in a state where a clearance is created, no forced pressing force is applied to the pressure port 65, so the pressure port 65 moves the inner circumferential surface 410 of the idle worm wheel gear 400. The pressing force release state which does not pressurize becomes.

Therefore, the door linkage shaft 61 is smoothly rotated because it does not receive any restraint force when the door is opened and closed.

However, referring to FIG. 18B, when the adjustment shaft 67 is rotated clockwise (right), the eccentric shaft rod 68 is eccentrically rotated to press the pressure port 66, thereby The pressure port 66 is in a state in which the gear inner circumferential surface 410 of the idle worm wheel gear 400 is pressed.

Therefore, when the idle worm wheel gear 400 is engaged with the worm 30 and the window WD or the fire door PD is opened and closed by hand, the pressure opening 66 is made of the idle worm wheel gear 400. Since the door interlocking shaft 61 rotates as the gear inner circumferential surface 410 is pressed, the rotation of the door interlocking shaft 61 is not rapidly rotated rapidly by the friction force between the pressing hole 66 and the gear inner circumferential surface 410. The rotation speed is controlled so that it can rotate slowly.

18, the eccentric shaft rod 68 is adjusted by appropriately adjusting the amount of rotation (rotation angle) of the adjustment shaft 67 in rotating the adjustment shaft 67 in the clockwise direction (right direction) as shown in FIG. As the rotation range is eccentrically adjusted, the force to pressurize the pressure port 66 is adjusted so that the pressure force to press the gear inner circumference 410 of the idle worm wheel gear 400 is adjusted. do.

Therefore, when the door interlocking shaft 61 rotates, the frictional force between the pressure port 66 and the gear inner circumference 410 is adjusted so that the speed at which the door interlocking shaft 61 is slowly rotated can be adjusted appropriately. And, it is possible to prevent the door closing noise or safety accident that may be generated by the rapid rotation of the door interlocking shaft 61 is suddenly rotated.

On the other hand, if a fire occurs, as described above, the fire sprinkler combined fire detector 80 installed on the indoor ceiling applies a fire occurrence signal to the control unit 70, and thus the reduction motor by the command of the control unit 70. 20 is driven, thereby the idle worm wheel gear 400 is rotated as the worm 30 is rotated by the drive of the reduction motor 20.

At this time, since the chain sprocket 91 or the upper arm 94 of the door opening and closing means (90, 90 ') connected to the lower end of the door interlocking shaft 61 is stopped without being rotated, the door interlocking shaft (61) ) Is not rotated and only the idle worm wheel gear 400 is idle with the door interlocking shaft 61 as the central axis.

Therefore, the interlocking gear 540 meshed with the idle war worm wheel gear 400 is rotated so that the cam gear shaft 51 and the cam gear 50 fixed thereto are rotated.

Accordingly, the intermittent interlocking gear 60 is engaged with the gear tooth 53 of the cam gear 50 so that the door interlocking shaft 61 is rotated so that the chain sprockets of the door opening and closing means 90 and 90 'are rotated. 91) or the upper arm 94 is rotated so that the window (WD) or fire door (PD) is automatically closed, as described above, the window (WD) or fire door (PD) is automatically closed as described above Since the detailed description thereof will be omitted.

In addition, at this time, the touch hole 71 is also rotated by one rotation, and presses the switch piece 73 of the limit switch 72 again to send a signal to the control unit 70, thereby receiving the signal of the limit switch 72. As the control unit 70 stops the driving of the reduction motor 20 by the command, the cam gear unit 50 stops after one rotation and the cam groove unit 52 faces the intermittent interlocking gear 60. Stopping at the position to be operated is the same as the other embodiment already described above.

Therefore, even when the window WD or the fire door PD is automatically closed, the intermittent interlocking gear 60 faces the cam groove portion 52 of the cam gear 50 as shown in FIG. After publication, the window (WD) or the fire door (PD) can be easily opened and closed by hand as needed.

Therefore, the present invention can open and close a door such as a window (WD) or a fire door (PD) in a very easy way, usually by hand, but also closes the door automatically when a fire occurs, the electricity supply is cut off or After a fire, you can open the door as needed.

In addition, even if the door is normally opened and closed for a long time by hand, only the intermittent interlocking gear idles and does not interlock with other gears, so that the failure of the driving device is hardly generated. Closed operation is promoted to function properly, so product reliability is greatly improved.

Therefore, the present invention makes it possible to more inexpensively supply a driving device that allows a door to be automatically closed in case of fire, which is relatively simple in structure and has little risk of failure.

In the present invention, the first embodiment is preferably used to be interlocked with the door opening and closing means 90 of the window (WD) having a long chain 92, the second embodiment is to open and close It is preferable to be installed to be used in conjunction with the door opening and closing means 90 'of the short fire door (PD).

And the third embodiment is selective to both the door opening and closing means 90 of the window (WD) having a long chain of travel 92 and the door opening and closing means 90 'of the fire door (PD) with a short rotation distance to open and close Can be installed to be used in conjunction with.

In addition, the present invention has been described as a driving device that automatically closes the door in case of fire, and in some cases, may be used as a driving device that automatically closes the door.

Therefore, the present invention is not limited to the embodiments shown and described, and may be modified in various forms by those skilled in the art to which the present invention pertains, and thus, the scope of the present invention is not limited to the scope of the claims. It is self-evident that must be protected.

10: housing 20: reduction motor
30: Worm 31: Worm celebration
40: worm wheel gear 41: wheel gear shaft
50: cam gear 51: cam gear shaft
52: Cam Home 53: Gear
54: deceleration interlocking gear 60: intermittent interlocking gear
61: door interlocking shaft 63: air power control means
64: axis 65: flow hole
66: Pressure port 67: Adjustment shaft
68: eccentric shaft 400: idle war gear
410: When gears are extended 540: Interlocking gear
70: control unit 71: touch hole
72: limit switch 73: switch
80: fire-fighting spring-cooled fire detector 81: detection sensor
90,90 ': Door opening and closing means 91: Chain sprocket
92: chain 93: door arm stand device
94,95: Upper and lower arm bands K: Axis of center line
S: Rod center WD: Window
PD: Fire door

Claims (6)

Reduced motor 20 provided on one side of the housing 10 and:
A worm (30) provided on the worm shaft (31) directly connected to the motor shaft (21) of the reduction motor (20) and supported by the housing (10) to be rotated;
A worm wheel gear 40 provided at one side in association with the worm 30;
The cam is interlocked with the worm wheel gear 40 and fixed to the upper end of the cam gear shaft 51 provided to stand in a direction orthogonal to the worm shaft 31. The cam has a concave cam groove part 52 at one side. A gear 50;
An intermittent interlocking gear (60) fixedly provided at an upper end of the door interlocking shaft (61) provided in parallel with the cam gear shaft (51);
When the deceleration motor 20 stops, the intermittent interlocking gear 60 is positioned at the position opposite to the cam groove 52 of the cam gear 50, so that the intermittent interlocking gear 60 is idling, and the deceleration motor 20 is reduced. When the cam gear 50 is rotated by the operation, the intermittent interlocking gear 60 is engaged with the gear tooth 53 of the cam gear 50 and the door opening and closing means 90, 90 by the rotation of the door interlocking shaft 61. ') Is a drive device using a cam gear to automatically close the door in the event of fire characterized in that it is made to interlock.
The worm wheel gear 40 of claim 1, further comprising another wheel gear shaft 41 between the worm shaft 31 and the cam gear shaft 51 to fix the worm wheel gear 40 to the wheel gear shaft 41. In case of fire, characterized in that the cam gear 50 is rotated by allowing the rotational force of the worm wheel gear 40 to be transmitted to the deceleration interlocking gear 54 provided at the lower end of the cam gear shaft 51. Drive device using cam gear to close the door automatically.
Reduced motor 20 provided on one side of the housing 10 and:
A worm (30) provided on the worm shaft (31) directly connected to the motor shaft (21) of the reduction motor (20) and supported by the housing (10) to be rotated;
A cam gear 50 provided fixedly at an upper end of the cam gear shaft 51 provided to stand in a direction perpendicular to the worm shaft 31, and having a concave cam groove portion 52 at one side thereof;
An intermittent interlocking gear 60 which is fixed to be interlocked with the cam gear 50 at an upper end of the door interlocking shaft 61 provided in parallel with the cam gear shaft 51;
An idle worm wheel gear 400 installed on the door interlocking shaft 61 so as to be idle with the door interlocking shaft 61 and receiving power from the worm 30;
It is fixed to the cam gear shaft (51) includes an interlocking gear (540) for receiving the rotational force of the idle worm wheel gear (400);
When the deceleration motor 20 stops, the intermittent interlocking gear 60 is positioned at the position opposite to the cam groove 52 of the cam gear 50, so that the intermittent interlocking gear 60 is idling, and the deceleration motor 20 is reduced. When the cam gear 50 is rotated by the operation, the intermittent interlocking gear 60 is engaged with the gear tooth 53 of the cam gear 50 and the door opening and closing means 90, 90 by the rotation of the door interlocking shaft 61. ') Is a drive device using a cam gear to automatically close the door in the event of fire characterized in that it is made to interlock.
According to claim 3, The door interlocking shaft 61, the idle worm wheel gear 400 is engaged with the worm 30, the idle power adjusting means for reducing the rotational speed of the door interlocking shaft 61 in a stopped state Drive device using a cam gear to automatically close the door in the event of fire, characterized in that it further comprises (63).
5. The idle power adjusting means (63) according to claim 4, wherein the idle power adjusting means (63) comprises a shaft hole (64) having a threaded portion (64a) opened outward in the longitudinal direction of the door interlocking shaft (61), and a revolution at the shaft hole (64). Pressing port 66 having a curved portion 66a inserted into the flow hole 65 provided at the point where the gear inner circumferential surface 410 of the Um wheel gear 400 is positioned and in contact with the gear inner circumferential surface 410, and the screw portion. A control shaft 67 having a screw head portion 67a fastened to 64a and inserted into the shaft hole 64, and a rod center line eccentric with the shaft center line K at the lower end of the control shaft 67. Equipped with an eccentric shaft rod (68) around the center, the pressure port 66 is pressed by the eccentric shaft rod 68 is rotated eccentrically about the axial center line (K), the gear of the idle worm wheel gear 400 Driving device using a cam gear to automatically close the door in the event of fire, characterized in that made to press the inner peripheral surface (410).
According to any one of claims 1 to 3, wherein the cam gear shaft 51 which is transmitted and rotated by the drive of the reduction motor 20 is provided with a touch mechanism 71, the touch mechanism 71 Each time one revolution of) is applied to the control unit 70 by pressing the switch piece 73 of the limit switch 72 is characterized in that the control unit 70 is controlled to stop the drive of the reduction motor 20 Drive device using cam gear to automatically close the door in case of fire.

Images