KR100307745B1 - Fire shutter opening and closing control device - Google Patents

Abstract

The present invention relates to an apparatus for controlling the opening and closing of a fire shutter.

Fire prevention shutter is to prevent fire transition between fire area and other areas in case of fire. Various types of switch control devices are provided in order to show the auto shut-off function in case of fire. There should be no need for compact weight reduction.

The conventional brake return and release shafts are configured separately, and the conventional device using separate DC and AC solenoids for return and release has a large number of parts. Even after operation, there was a serious problem of malfunction even with a slight assembly error.

The present invention sets the brake release axis and the return axis of the drive motor for opening and closing the shutter as one axis, and attaches a cam to a DC or step motor having a precisely controlled rotational motion so that the brake return and release shafts having a single structure can be reciprocated. It was made. And separate switches are installed on both sides of the brake return and release shafts, and unlike the switches installed separately on the two conventional shafts, only half of the switches are required for operation, resulting in simple assembly and almost no problem in operation. It is to provide a control device that does not exist.

Description

Fire shutter opening and closing control device

The present invention relates to a control device for automatically adjusting the opening and closing of a fire shutter. In particular, the present invention relates to a fire protection shutter opening and closing control unit that has excellent assembly performance and minimizes occurrence of trouble by unifying brake return and release shafts and reducing use switches.

In case of fire, various means are provided to minimize the transition of fire by initially blocking the fire area and other areas. When a fire occurs in the building, as shown in FIG. 4, the electric switch 102 is braked by a DC solenoid operated according to signals generated by various detection sensors such as the smoke detection sensor 100 or the temperature detection sensor 101. While the lever is opened, the shutter plate 103 descends due to its own weight, and when it is desired to return the shutter plate to its original state, the brake return associated with this is caused by the suction action of the movable iron core by an AC recovery solenoid operated by a separate AC power source. The shaft is pulled so that the shutter plate is wound by the reverse rotational power of the drive motor and stored in the shutter box.

The above fireproof shutter plate has a blocking effect in the event of a fire, but it is impossible to escape if there is a person inside. Therefore, a fire door is provided on one side of the fire shutter (Utility Model Notification 93-6476). Although this utility model has the function of emergency door in its own way, the installation position of emergency door can be installed on one side at all times, and the weight of one slat member is only a few kilograms when the shutter descends due to its own weight. At the same time, descending at once generates tremendous impact energy at the lowest point, the slat members are bent or deviated from the impact. Another problem is that the recovery switch of the interlock controller 104 is pressed first, and then the down or up switch disposed in the push switch 106 is pressed, but the user accidentally opens the recovery switch first and does not return the brake release shaft. When the push switch 106 is opened, power is alternately connected to the brake release DC solenoid built in the shutter control device and the AC solenoid for returning to the shutter plate, so that the brake release shaft that touches the brake lever of the electric switch is pushed continuously. As the pulling operation was repeated, the shutter plate was continuously raised and lowered, and as a result, the overheat breakage caused by the continuous repetitive operation of the solenoid was frequent.

In order to solve the above problems, the present inventors arrange a brake return shaft and a release shaft in series on the same axis in Patent No. 146718, and arrange a DC solenoid and a limit switch on both sides thereof, and an AC solenoid on the upper side thereof. By interlocking with each other, the brake function on the motor is activated when the shutter plate reaches a certain lowered position. In addition, the return AC solenoid operates only when a separate external AC power is supplied, but interlocks only with the brake return side, thereby fundamentally blocking the alternating repetitive operation even if the switching operation is wrong. Patent No. 146318 has solved all the problems of various controllers for opening and closing the fire shutter at one time, but it is economical problem that the cost should be reduced as much as possible as it becomes smaller and lighter. There has been a continuing demand for minimizing the complexity of assembly problems and malfunctions between multiple components. In particular, the problem is that when the power supply to the building is cut off as a building fire, a serious problem arises because the brake return and release shaft operated by AC power are not performed. The cause of this is to limit the operation of a small battery to overcome the resilience of the spring with strong brake return and release shaft, which can be solved by using a large capacity battery. This is because the occurrence of is often difficult. In particular, due to the size of the battery is difficult to miniaturize, there is a problem that must be forced to secure the installation space by changing the structure of the building.

The present invention, in the control device for adjusting the rising and falling of the fire shutter shutter plate, to enable the operation and stop of the motor at the same time by using one axis, the operation of the control shaft is the same as the cam connected to the drive shaft of the separate DC drive motor The operation converter is used, and the driving motor is also miniaturized so that it can be operated by the internal storage power even if the AC power supplied to the building is cut off due to the fire. In addition, there is no malfunction even if the brake return shaft and release shaft are not precisely arranged and assembled, and the use of new fire shutter can be controlled by drastically reducing the number of parts used and minimizing the error between parts due to the reduction of parts. It is to provide a control device.

In addition, due to the simplification of the number of parts and the elimination of the power supply, the size can be reduced to 1/3 or less as compared with the conventional one, and it is intended to provide a switch having a small configuration so that the installation space is almost unnecessary.

In addition, since the direct drive motor for operation requires a small capacity of 1.5 to 12V, sufficient operation is possible only by installing the capacity.Therefore, there is no need to install the battery for DC supply. It is intended to provide this possible switchgear.

1 is a perspective view showing the overall configuration of the present invention,

2a and 2b are plan views showing the operating state of the present invention sequentially;

3 is a perspective view showing an operating state of the present invention,

4 is a cross-sectional view taken along line AA of the present invention;

5 is a conceptual diagram of a general fire monitoring apparatus.

******** Description of the symbols for the main parts of the drawings ********

5: Brake return and release shaft 6: Control motor

8: first switch 9: second switch 10: DC solenoid

11 linker 50 bottom 51 side wall 100 smoke sensor

101: temperature sensor 102: electric switch 103: shutter plate

200: circuit board

According to the present invention, the brake return and release shafts penetrate the center of the return spring disposed transversely to the side wall of the U-shaped case, and a part of the tip is partially exposed to a part of the side wall. On the side facing the release shaft, the control motor is arranged in series with the cam placed at the tip of the drive shaft. In addition, a protrusion was formed on a part of the front end side of the brake return and release shaft so that the switch installed on one side and the linker installed on the other side were able to switch when the brake return and release shaft were repositioned.

In the present invention, the lift of the cam is adjusted so that the brake return and release shafts can be reciprocated by the displacement width of the movable core with respect to the switching and switching of the linkers and the solenoid connected to the linker.

The present invention is to enable the opening and closing of the brake without the installation of a separate DC power supply battery by operating a DC motor of a small capacity of about 1 to 12V as a control motor using a capacitor such as capacity.

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

Figure 1 is a perspective view showing the overall configuration of the present invention, Figure 2 (a) (b) is a plan view showing the actual operating state, Figure 3 is the brake return and release shaft is displaced by the rotation of the cam while other switching is operated Figure 4 is a perspective view showing a state, Figure 4 is a cross-sectional view of the AA line of the present invention showing the guide for preventing the brake release and vibration, the shift of the return shaft, Figure 5 is a conceptual diagram of a conventional fire detection system.

The present invention is arranged in the longitudinal direction from the central portion of the bottom surface 50 of the U-shape toward the one side wall (51) and a part of the tip portion of the brake return and release shaft (5) is arranged to partially penetrate the one side wall (51); ,

The cam mechanism 7 is installed on the drive shaft while being arranged in series with the brake return and release shaft 5 to the one side wall 53 of the case so as to be in contact with the contact end 5a of the brake return and release shaft. Arranged control motor (6),

The switch is braked so as to be switched according to the position shift of the brake return and release shaft by the protrusion 5b formed on the brake return and release shaft 5 while being disposed in parallel with one side of the brake return and release shaft 5. A first switch 8 for power on / off control, which is arranged toward the projection of the return and release shaft,

A part of the front end of the linker is partially caught by the movable iron core of the DC solenoid 10 toward the opposite side to the first switch installation side of the brake return and release shaft 5 so as to be interlocked. It consists of a linkage | operation part 11 which consists of a linker 11 and a direct current | flow solenoid which catches the latching | projection part on the opposite side of the projection part of a return and release shaft.

In the present invention, the brake return and release shaft 5 is a long plate-shaped or cylindrical structure that can release the brakes that prevent the lowering of the shutter from the side penetrating the penetrating portion 51a of the one side wall 51 of the case. The adjusting knob 5c is provided, and the opposite end is provided with a contact end 5a on which the friction reducing member such as an idle roller, rolling bearing, etc. is attached, and inside the contact end with the first switch 8. Protruding outwardly protruding portion (5b) is provided so as to be in contact with the structure, and the locking projection (5d) is installed so as to be caught on the pivot pin in the center of the linker 11 on the side opposite to the protruding direction of the protruding portion (5b) to be. Between the brake return and release shaft 5 and the side wall 51, a spring retainer 5e is provided to protrude so that the brake return and release shaft is always directed toward the center of the case via an elastic body such as a spring or elastic rubber. To pull. In the lower part of the brake return and release shaft 5, as shown in FIG. 4, the extension part 5f is formed to open to both sides, and thus it may be generated during operation because it moves forward and backward along the guiding protrusion 50a of the bottom surface 50. Eliminates distortion and vibration. The shape of the guiding protrusion can be variously configured as necessary, and any type can be selected and installed as long as it prevents vibration and distortion.

The control motor 6 of the present invention can be attached to the reduction gear unit 6a to adjust the rotational speed of the cam to a desired speed, and the cam 7 is installed at the front end of the output shaft so that the cam edge and the bottom of the cam 7a The maximum displacement of the brake was adjusted so that the brake return and release shaft 5 could switch and engage the first switch 8 and the linker 11 so that the stroke could be engaged. In the present invention, the cam is shown in the form of a cross-sectional cam, but if there is no obstacle in the reciprocation of the brake return and release shaft, all of the board cam, front cam, linear cam, counter cam, cylindrical cam, spherical cam, swash plate cam, etc. are applicable. . The motor used to rotate the cam is mainly a DC, so the small high-precision motors such as DC motors and DC step motors are suitable. In the present invention, a capacitor (capacitor) is used so that it can be rotated in an emergency by the power stored in this capacity at ordinary times, so that the installation and maintenance of a power supply device such as a DC supply battery is unnecessary.

In the present invention, the linker 11 has a L-shape as a whole, from the stopper 12 so that a part of the tip portion 11a can be in contact with the bent portion 10b installed at the tip of the movable iron core 10a of the DC solenoid 10. The locking space 5e, which is always pulled by the spring 11b arranged to be pulled, wherein the locking projection 5d of the brake return and release shaft 5 is between the pivot pin 11c and the end of the linker body portion. It is arranged to be caught or detachable, and on the outer circumferential side of the pivot pin (11c) was installed a friction reducing idle roller or other low friction material for smooth separation and locking of the locking projection (5d).

In the present invention, the base 6c which couples the control motor 6 with the case or suppresses vibration can be made of a rubber material or a synthetic resin material having some elasticity. The form does not have to be limiting.

In the present invention, the reference numeral 200 is a circuit for controlling the power and controlling the rotation speed of the control motor is a emergency signal, that is, the operation signal from the smoke detection sensor 100 or the temperature sensor 101 in the event of a fire When the power supply to the motor (6) is turned on and driven by the switching circuit, the edge portion (7a) of the cam is rotated in response to the signal that the snap action is applied to the switch (8) while pushing the brake return and release shaft. , The excitation of the DC solenoid 10 is provided with a circuit for controlling to operate by the storage current of the built-in capacitance (capacitor).

The operational relationship according to the above structural features will be described.

As shown in FIG. 4, when a fire occurs and smoke or heat is detected through the smoke sensor 100 or the temperature sensor 101 and transmitted to the circuit 200, power is stored in the capacity through a separate central controller. The supplied current is supplied to the control motor 6 to rotate the motor. When power is supplied and the control motor 6 rotates, the cam 7 rotates via the reduction gear portion 6a. Thus, as shown in FIG. 2B, the edge portion 7a of the cam returns to the brake return and release shaft 5. Since it is in contact with the contact end (5b) at the tip of the brake return and release shaft is advanced by the height of the edge. Therefore, the protrusion 5c and the locking protrusion 5d of the brake return and release shaft 5 move forward while giving a snap action to the first switch 8 for switching. And the locking projection (5d) is spread across the pivot pin (11c) of the linker 11 to prevent the brake return and the retraction of the release shaft to maintain a forward state. Therefore, the adjustment knob 5a keeps the brake lever that prevents the shutter from falling down so that the descending of the fire shutter is continued. When the lowering reaches a predetermined set position, the limit switch around the shutter plate is touched to cause the DC solenoid 10 to be excited by the signal to suck the movable iron core 10a. The suction of the movable iron core lowers the shutter plate while releasing the locking state of the brake return and the locking protrusion 5d of the release shaft 5, which is caught by the pivot pin 11c, releasing the snap action on the first switch. The brakes that interfere with the operation are working. In the above operation, the cam rotation of the control motor 6 is configured to rotate one time with one signal, and the speed is arbitrarily changed depending on the descending length and speed of the shutter plate or the height of the cam lift is adjusted.

The present invention is to reciprocate in a certain distance range by the brake release and the forward and backward movement of the return shaft in contact with the edge of the cam attached to the front end by the rotation of the small control motor. Such a reciprocating drive can be operated several times in the event of a fire by selecting and using a capacity of sufficiently large capacity. Therefore, unlike a conventional mechanical structure in which a plurality of springs pull and push two or more shafts together, the assembly is simple and the elastic modulus is not changed. There is no need for heavy springs, so the operation is precise. Furthermore, unlike springs, where the elastic modulus changes after a long time, the switch can be turned on and off and the speed can be controlled at the correct position even after a long time without mechanical damage to the cam. Large accidents can be prevented in advance. Particularly preferred is that the number of the operating parts is small and occupies less space, so that it can be installed regardless of the installation position in buildings of various structures.

Claims (5)

A brake return and release shaft 5 disposed in a longitudinal direction from the center portion of the bottom surface 50 of the c-shaped case toward the one side wall 51 and partially disposed through the one side wall 51; The cam mechanism 7 is installed on the drive shaft while being arranged in series with the brake return and release shaft 5 to the one side wall 53 of the case so as to be in contact with the contact end 5a of the brake return and release shaft. Arranged control motor (6), The switch is braked so as to be switched according to the position shift of the brake return and release shaft by the protrusion 5b formed on the brake return and release shaft 5 while being disposed in parallel with one side of the brake return and release shaft 5. A first switch 8 for power on / off control of the control motor 6 and the direct current solenoid 10 arranged toward the projection of the return and release shaft; A part of the tip portion of the L-shaped linker opposite to the first switch installation side of the brake return and release shaft 5 is partially caught by the movable iron core of the DC solenoid 10 so as to be interlocked and pivoted. Fire control shutter opening and closing control device consisting of a linker (11) for engaging the brake projection on the opposite side of the projection of the brake return and release shaft in the center and a return operation consisting of a direct current solenoid. The method of claim 1, The brake return and release shaft 5 is provided with an adjusting knob 5a on the side passing through the penetrating portion 51a of one side wall 51 of the case to release the brake which hinders the lowering of the shutter. The contact end 5b with friction reducing member is installed A protruding portion 5c protruding outwardly is provided on the side to contact the first switch 8, so that it can be caught by the pivot pin at the center of the linker 11 on the side opposite to the protruding direction of the protruding portion 5c. The locking projection 5d is installed, A control device for opening and closing the fire shutter, characterized in that the lower portion of the brake return and release shaft 5 extends the extension portion 5f to both sides so as to move forward and backward along the guiding protrusion 50a of the bottom surface 50. . The method of claim 2, A spring retainer 5d is provided between the brake return and release shaft 5 and the side wall 51 to protrude so that the brake return and release shaft is always pulled toward the center of the case via a spring elastic body. Fire shutter opening and closing control device. The method of claim 1, The control motor 6 is provided with the reduction gear part 6a between the cam 7 at the tip of the output shaft 6b, and the brake return and release of the maximum shift between the edge part 7a and the bottom of the cam. Fire control shutter opening and closing control device, characterized in that the shaft (5) sets the stroke distance to the extent that switching and engaging operation with respect to the first switch (8) and the linker (11). The method of claim 1, The linker 11 has an L-shape as a whole, and is installed such that a part of the tip portion 11a of the linker 11 is in contact with the bent portion 10b installed at the tip of the movable iron core 10a of the DC solenoid 10. The tip portion 11a of the is always pulled by the spring 11b arranged to be pulled from the stopper 12, The fire stopping shutter, characterized in that the locking projection 5d of the brake return and release shaft 5 is arranged to be able to engage and release in the locking space 5e between the pivot pin 11c and the linker body end. Control device for opening and closing.