JP2022045222A - Thermal fuse type sensor, fire prevention zone forming device, and fire prevention zone forming method - Google Patents

Abstract

To cause an automatic closing device to be actuated by using a thermal fuse type sensor of a mechanical structure to the automatic closing device controlled electrically.SOLUTION: A fire shutter device 100 for executing automatic closing on the basis of an electric signal is caused to execute automatic closing by using a thermal fuse type sensor 11d of a mechanical structure. By mechanically moving a solenoid 126 held electrically according to the movement of a wire 11e in the fire shutter device 100 for executing automatic closing on the basis of an electric signal, the holding state is cancelled so that the fire shutter device 100 is automatically closed. Thus, an automatic closing device 12 can be actuated by applying the thermal fuse type sensor 11d of a mechanical structure to the automatic closing device 12 controlled electrically.SELECTED DRAWING: Figure 6

Description

The present invention is a fire door, a sliding door, a sheet, a shutter, etc. for partitioning openings such as entrances and exits of buildings such as buildings, factories, and warehouses, large rooms, passages, hall spaces, underground streets, and structures such as multi-story parking facilities. , Screen-shaped, slat-shaped or panel-shaped, related to the fire-prevention section forming device and the fire-prevention section forming method that automatically closes the passage hall space inside the building by using a shielding member such as a fire-proof shutter such as a fire-resistant cloth. The present invention relates to a temperature fuse type sensing device, a fire partition forming device, and a fire partition forming method configured to reliably perform an automatic closing operation in an emergency.

Generally, in the passages inside buildings such as buildings with large floor areas, shielding members such as fire shutters and fire doors that automatically close at the same time as the fire breaks out are used to prevent the spread of fire and the spread of smoke in the event of a fire. A space surrounded three-dimensionally with pillars, walls, ceilings, floors, etc., that is, a fire protection compartment using fire protection equipment (fire protection compartment forming device such as fire shutters, fire doors, etc.) that operates to form a fire protection compartment. A forming device is provided.

In the conventional fire door forming device, when a fire door or a fire shutter that is closed at any time is used for a fire door of a building, normally, a thermal fuse is used to keep the fire door or the fire shutter open. In the event of a fire, the thermal fuse blows due to the heat of the fire, and the fire door and fire shutter are released from the thermal fuse to release the holding. It was descent.

However, if a fire door or fire shutter with a thermal fuse device is used in the vertical hole section or the section for different purposes, the smoke generated by the fire will be released to the staircase, stairwell, elevator hoistway, escalator part before the thermal fuse is activated. Since there is a risk that people who are evacuating will inhale harmful smoke and hinder their evacuation, it is now decided to use a sensing means such as a smoke detector.

For fire doors and fire shutters installed in existing buildings, replace the temperature fuse with smoke detectors, etc., and install smoke detectors, repeaters, harm prevention interlocking repeaters (fire protection shutters only), and automatic closing devices. , These devices are connected and controlled by electric wires for signal transmission in the building.
Patent Document 1 describes a device configured to operate a large number of fire prevention equipment (plural fire prevention shutters) at the same time with one repeater.

The one described in Patent Document 1 is configured to simultaneously control a plurality of fire shutters connected to a repeater via an electric wire. In other words, when installing a fire shutter in a place with a large floor area such as a large-scale warehouse, multiple smoke detectors that detect the generation of smoke are installed in each section as a means of detecting an abnormal situation in response to a fire. At the same time, a repeater is also provided in each section, and the operation of all fire shutters is controlled by transmitting a signal from the sensing means to the central receiver via the repeater.

However, if the smoke detector, which is a sensing means, is short-circuited due to the occurrence of a fire or the like, there is a possibility that all the fire shutters will not operate due to this. Therefore, we decided to provide a disconnector between the repeater and the receiver, and if the sensing means is short-circuited, use the disconnector to disconnect only the repeater to which the short-circuited sensing means is connected from the central receiver. .. This makes it possible for the fire shutters installed outside the section where the disconnector is activated to be activated by the receiver.
On the other hand, since the fire shutter in the section whose operation is controlled by the repeater separated by the disconnector does not close automatically after that, it becomes difficult to effectively prevent the spread of fire by the fire shutter in the section. In addition to providing a disconnector, there are other means such as wrapping the wiring of the sensor with fireproof tape, but cost is an issue, and most of them are handled by a disconnector.

Therefore, the applicant of the present application has applied for Patent Document 2 as a fire protection section forming device and a fire protection equipment signal transmission method capable of operating the fire protection section forming device of the section separated by the disconnector without using a repeater. ing.

JP-A-2007-244607 Japanese Unexamined Patent Publication No. 2019-198640

In the fire protection compartment forming apparatus described in Patent Document 2, preliminary sensing means configured to have lower sensitivity than the sensing means provided in the fire protection compartment are provided in each of the plurality of fire protection compartment forming means, and the preliminary sensing means is used. The fire protection compartment forming means starts automatic closing according to the output sensing signal. If the sensing means provided in the fire-prevention compartment first detects an abnormal situation in response to a fire, and the fire-prevention compartment forming means initiates automatic closure via a relay means based on that, this preliminary sensing means is used. It will not work. However, when the relay means is electrically disconnected from the receiver by the disconnection means, the sensing means provided in the fire protection compartment no longer functions as a detector, so that the fire protection compartment forming means does not perform automatic closure. Therefore, in the invention described in Patent Document 2, the fire-prevention compartment forming means is configured so that the fire-prevention compartment forming means individually starts automatic closing according to the sensing signal output from the preliminary sensing means, and the fire-prevention compartment forming means is automatically closed individually. Therefore, the spread of fire can be minimized.

Further, in Patent Document 2, when the sensing means installed in the fire protection compartment is a smoke detector, it is preferable to use the flame detector as the preliminary sensing means, and the sensing means installed in the fire protection compartment is used. When the means is a heat detector or a flame detector, it is stated that it is preferable to use a detector having a lower sensitivity than the installed detector as a preliminary sensing means. Further, it is described that when a sensor having the same sensitivity is used, the sensitivity can be adjusted by delaying the sensing signal for a predetermined time. Furthermore, there is a description that a thermal fuse that blows due to heat in the event of a fire may be used as a sensor as a sensor with low sensitivity.

Generally, the mainstream mechanism for automatically closing a fire using a thermal fuse is a simple structure that closes the shutter by pulling the brake of the switch with a wire when the thermal fuse melts due to heat. There is no need to consider how to deal with a power outage because it has a mechanical structure that does not use electricity at all.
Since the fire protection compartment forming means described in Patent Document 2 is controlled by using an electric signal, it is necessary to convert the mechanical mechanism into an electric signal when a thermal fuse that detects a fire by a mechanical mechanism is used. be. That is, by configuring the temperature fuse type sensing device having a mechanical structure so as to be able to output an electric signal, it can also be applied to a fire protection compartment forming means using an electric signal.
In the case of an electrically controlled fire protection compartment forming device, if the power supply is stopped due to a power failure or the like, it may be difficult to execute the closing operation by the automatic closing device.

The present invention has been made in view of the above points, and is a temperature fuse capable of operating an automatic closing device by using a temperature fuse type sensing device having a mechanical structure for an electrically controlled automatic closing device. It is an object of the present invention to provide a type sensing device, a fire protection compartment forming apparatus, and a fire protection compartment forming method.

The features of the temperature fuse type sensing device according to the present invention are a temperature fuse means that blows under predetermined conditions, a first movable means that mechanically moves according to the blow of the temperature fuse means, and the first movable means. The wire means arranged to move according to the movement of the wire means and the electrically held holding means are moved in the release direction according to the movement of the wire means to release the holding state and close the opening / closing body means. It is provided with a second movable means for executing the operation.
In the thermal fuse type sensing device, the wire connected to the brake mechanism of the switch and the thermal fuse are engaged with a predetermined tension, and when the thermal fuse blows, the tension on the wire disappears and the wire loosens. It consisted of a mechanical mechanism in which the brake of the switch was released and the switch means was automatically closed. It is difficult to use such a conventional mechanically configured temperature fuse type sensing device unless the automatic closing device on the shutter side is also configured by a mechanical mechanism. Therefore, it has been difficult to apply the temperature fuse type sensing device of the conventional mechanical mechanism to the opening / closing body means for executing the automatic closing based on the electric signal. Therefore, in the present invention, even in the opening / closing body means for executing automatic closing based on an electric signal, the holding means electrically held is mechanically released in a direction in which the holding means is released according to the movement of the wire means. By moving it, the holding state was released and the opening / closing body means was automatically closed. Thereby, the automatic closing device can be operated by using the temperature fuse type sensing device having a mechanical structure for the automatically controlled automatic closing device.

The feature of the fire protection compartment forming apparatus according to the present invention is that the holding state of the holding means provided in the building and electrically held in response to the input of the closing instruction signal is released, and the space in the building is opened and closed by means of an opening / closing body. In a fire protection compartment forming device that forms a fire protection compartment in the building by partitioning, the temperature fuse type sensing device is provided, the temperature fuse means of the temperature fuse type sensing device is blown, and the wire means moves. The electrically held holding means is configured so that the second movable means moves in the releasing direction, the holding state of the holding means is released, and the closing operation of the opening / closing body means is executed. be.
The fire protection compartment forming device is installed in the building and forms a predetermined fire protection compartment in the building in response to the input of a closing instruction signal when a fire occurs, such as a fire shutter device, a fire curtain device, and a fire door. In addition to this, the shield member for fire prevention is supported by the descent method, rotation method, horizontal pulling method, folding method, horizontal method, ascending method, etc. In the case of a fire door, it is stored in a storage section provided on the side of the peripheral edge of the building opening, and when a fire breaks out, it rotates and moves from the state of being stored on the side of the peripheral edge, for example, above the peripheral edge. It stops by abutting against the door stop provided on the (ceiling) side or the lower (floor) side, and partitions a part of the building opening. Further, a fire shutter device that partitions (closes) the remaining part of the opening that is not partitioned by the fire door may be attached to the fire door. Normally, the fire door is restrained by an engaging member in a storage part such as a door pocket, and in an emergency such as a fire, it is engaged by an automatic closing device for the fire door that inputs a start signal from a hazard prevention interlocking repeater. It is configured to release the restraint of the mating member and start the closing operation. These fire protection compartment forming devices are installed in the building.
In the present invention, the electrically held holding means is released by using the temperature fuse type sensing device. In the fire protection compartment forming device, the thermal fuse of the thermal fuse type sensing device is blown and the wire means is moved, so that the second movable means moves the electrically held holding means in the releasing direction, and the holding means of the holding means is moved. Since the holding state is released and the automatic closing of the opening / closing body means is started, even if the power supply is stopped due to a power failure or the like, the fire protection compartment forming device automatically closes the fire and minimizes the spread of fire. Can be fastened to.

The first feature of the fire prevention signal transmission method according to the present invention is to release the holding state of the holding means provided in the building and electrically held in response to the input of the closing instruction signal to open and close the space in the building. In the fire protection compartment forming method for forming a fire protection compartment in the building by partitioning by a body means, the temperature fuse type sensing device according to claim 1 is installed, and the temperature fuse means of the temperature fuse type sensing device is blown. When the wire means moves, the electrically held holding means is moved in the release direction by the second movable means to release the holding state, and the closing operation of the opening / closing body means is executed. It is in.
This is an invention of a fire protection compartment forming method corresponding to the fire protection compartment forming apparatus.

According to the temperature fuse type sensing device, the fire protection partition forming device and the fire protection partition forming method of the present invention, the automatic closing device is operated by using the temperature fuse type sensing device having a mechanical structure for the electrically controlled automatic closing device. It has the effect of being able to make it.

It is a figure which shows the schematic structure of the fire protection shutter device and the fire door which constitute the fire protection partition forming apparatus which concerns on this invention. It is a front view which shows the internal structure of the automatic closing device 12. It is a top view which shows the internal structure of the automatic closing device 12. It is a figure which shows the schematic structure of the temperature fuse type sensing device which used the temperature fuse which blows by heat at the time of a fire as a sensor, and is the figure which shows the state before the temperature fuse is blown by heat. It is a figure which shows the schematic structure of the temperature fuse type sensing device which used the temperature fuse which blows by heat at the time of a fire as a sensor, and is the figure which shows the state after the temperature fuse is blown by heat. It is a figure which shows the structure and the installation state of the lock release device installed in the automatic closing device shown in FIG. It is a figure which shows the structure and the installation state of the lock release device installed in the automatic closing device shown in FIG.

Hereinafter, a preferred embodiment of the fire protection compartment forming device using the temperature fuse type sensing device according to the present invention will be described with reference to the accompanying drawings. In this embodiment, a group of shutter devices whose opening and closing is controlled up and down as an opening / closing body means will be described as an example. FIG. 1 is a diagram showing a schematic configuration of a fire shutter device and a fire door constituting the fire protection compartment forming device according to the present invention. In some cases, only the fire shutter device or the fire door is provided independently.

The fire shutter device 100 is basically composed of an opening / closing device 10, a brake 11, an automatic closing device 12, a shutter curtain 14, guide rails 15, 16, a manual closing device 119, an obstacle detection device 11a, a temperature fuse type detection device 11d, and the like. It is composed. The fire shutter device 100 is usually in an open state in which the switch 10 winds the shutter curtain 14 around a take-up shaft (not shown) and stores the shutter curtain 14 in a storage portion provided at the upper part of the peripheral portion of the opening. be. As another example, the shutter curtain 14 may be kept in a closed state without being wound up, and the shutter curtain 14 may be stored in a storage portion to be in an open state in the event of a fire or the like. The open state of the fire shutter device 100 is maintained by being mechanically held by the brake 11.

The automatic closing device 12 is a closing instruction signal input from the wire-type manual closing device 119 (including the shutter closing button in an emergency), or a mechanical operation transmitted from the temperature fuse type sensing device 11d via the wire 11e. In response to the signal, the holding of the open state by the brake 11 is released, and the shutter curtain 14 is lowered by its own weight and extended from the storage portion to close or partition the opening to form a predetermined fire protection section. It has become like. Here, the mechanical operation signal means that the temperature fuse type sensing device 11d moves the wire 11e in the direction of releasing the holding of the brake 11 in the open state. Details will be described later.

The switch 10 is a drive motor for electrically opening and closing the shutter curtain 14. The automatic closing device 12 operates by electric power (DC 24V signal) from a commercial power source or a built-in standby power source (storage battery). The automatic closing device 12 releases the brake 11 in response to a mechanical sensing signal (movement of the wire 11e) from the temperature fuse type sensing device 11d even if commercial power is not supplied to the fire shutter device 100 in the event of a fire. The fireproof shutter curtain 14 in the wound state is lowered by its own weight to automatically close the opening. Further, the fire shutter device 100 and the fire door 320 may be provided with a door or a slit through which the fire door can pass for evacuation or the like. In this embodiment, the fire door 320 is provided with a dive door 321.

The fire shutter device 100 is provided with an obstacle sensing device 11a that mechanically detects contact with an obstacle during closure. The obstacle sensing device 11a is provided on the seat plate at the lower end of the shutter curtain 14, and tension acts when the shutter curtain 14 comes into contact with each obstacle, and the shutter curtain changes due to the change in tension (mechanical sensing signal). A wire 111 that turns on the brake 11 to stop the movement of the 14 is provided.

The automatic closing device 12 stops the closing operation of the shutter curtain 14 in response to the input of the mechanical sensing signal from the wire 111 of the obstacle detecting device 11a, and performs the avoiding operation thereof. Therefore, when the seat plate or the like comes into contact with an obstacle while the shutter curtain 14 is descending by its own weight at the time of a fire, and a mechanical detection signal is detected from the wire 111 of the obstacle detection device 11a, the shutter curtain 14 The self-weight descent is stopped and the avoidance operation is performed.

In a general configuration of a fire shutter device 100 provided with a fire door 320 next to a shutter curtain 14 as shown in FIG. 1, guide rails 15 provided on both sides of the shutter curtain 14 and end portions on the opening side are used. There is a guide rail called a center pillar provided in the opening between the shutter curtain 14 and the fire door 320. In this embodiment, the guide rail 15 is provided on one side (left side in the figure) of the shutter curtain 14, but the center pillar does not exist, and a concave groove portion is provided in a part of the side end portion of the fire door 320. , It is used as a guide rail 16. Therefore, in the case of the opening / closing device according to this embodiment, the fire door 320 is rotatably movable to close the space (partitioned state), and the guide rails 15 and 16 are present on both sides of the shutter curtain 14. Will be done.

In this embodiment, in order to close the shutter curtain 14 in conjunction with the closing operation of the fire door 320, which is a sleeve door provided as a shielding door means, the closing is detected to detect that the fire door 320 is surely closed. The confirmation switch 24 is installed at the door stop or the upper part of the opening, and the fire door 320 is closed first, and the closing confirmation switch 24 outputs the fire door closing completion signal to the automatic closing device 12. As a result, the shutter curtain 14 is configured to start the closing operation.

The fire door closing completion signal output from the closing confirmation switch 24 passes near the guide rail 16 and passes through a position that does not interfere with the shutter curtain 14, and is output to the automatic closing device 12. The automatic closing device 12 that has input the fire door closing completion signal releases the brake 11 and lowers the shutter curtain 14 of the fire-proof structure in the winding state by its own weight to automatically close the opening. The fire door 320 is a constantly open type, and is usually housed in a door pocket provided on a pillar on the side surface of the opening, a wall surface of the skeleton, or the like. In this constantly open type fire door 320, an evacuation passage is secured by a diving door 321 separately provided in the closed fire door 320.

The automatic closing device 322 for a fire door is provided in a shape embedded in the wall surface of the skeleton constituting the door pocket 323 of the fire door 320. The fire door 320 is restrained and held so as to be opened by the automatic closing device 322 for the fire door in normal times. Then, when the restraint holding is released by the automatic closing device 322 for the fire door, the fire door 320 is configured to be closed by an urging force such as its own weight (using a so-called gravity hinge) or a spring force (using a closer). ing.

The automatic closing device 322 for a fireproof door is electrically connected to an external device power supply terminal (24 [V] output terminal) (not shown), and responds to an input of a start signal based on the operation of the manual closing device 119. The voltage of 24 [V] is output from the power supply terminal of the external device to the automatic closing device 322 for the fireproof door as a voltage signal. The automatic closing device 322 for a fire door uses this voltage signal to release the restraint of the fire door 320 and close the fire door 320.

The voltage signal output from the power supply terminal of the external device to the automatic closing device 322 for the fire door is at a position where it does not interfere with the shutter curtain 14 and the closing confirmation switch 24, that is, at a position where contact or contact can be avoided. It passes through the upper frame of the door pocket 323 of the door 320 and the wall surface of the skeleton constituting the door pocket 323 of the fire door 320, and is introduced into the automatic closing device 322 for the fire door. In FIG. 1, the portion of the wiring to the automatic closing device 322 for the fire door, which is embedded in the wall surface of the skeleton, is shown by a dotted line.

The manual closing device 119 mainly outputs a control signal for operating the switch 10 for driving the shutter electric opening / closing and manually generates an activation signal for automatic closing. The manual closing device 119 includes a management combined operation input switch PBS (push button switch) corresponding to instructions for opening, closing, and stopping the shutter to the switch 10, an operation button, a recovery button, and a battery, which are emergency shutter closing buttons. A test button and the like are provided, and various display means for displaying the battery test result, the state of the standby power supply, the state of disconnection of the cord, and the like are provided. Since the input switch PBS is used for normal management, it does not necessarily have to be installed near the opening / closing device, and the administrator may have it as a remote controller, or it can be operated remotely. May be.

Although the manual closing device 119 is shown on the upper side of the fire door 320 in FIG. 1, it is actually installed on the skeleton side near the fire door 320 or at a position where the guide rail 15 can be operated by a person. The operation button of the manual closing device 119 is covered with a transparent resin panel (push-breaking cap), and the emergency shutter closing button (operation button) configured to be operable by pushing the transparent resin panel in an emergency. ) Is often provided.

FIG. 2 is a front view showing the internal structure of the automatic closing device 12, and FIG. 3 is a top view showing the internal structure of the automatic closing device 12. The automatic closing device 12 automatically closes and moves the shutter curtain 14 that has been stopped at the fully open position or the intermediate position in the opening / closing direction by mechanically controlling the switch 10 in the event of a disaster such as a fire. It is completely closed. The automatic closing device 12 is attached to the switch 10 by a bracket portion 110A provided on the machine frame 110. The automatic closing device 12 that mechanically controls the switch 10 has existed conventionally.

As shown in FIG. 3, the automatic closing device 12 is attached with the respective ends of the control wires 111 to 113. These wires 111 to 113 are made of a flexible string-shaped member or an elongated member. These control wires 111 to 113 are slidably inserted and protected inside the flexible outer cables 114 to 116.

The machine frame 110 of the automatic closing device 12 is provided with two rising portions 110B and 110C facing each other, and two rising portions are provided in holes 110D and 110E formed in these rising portions 110B and 110C. A plate-shaped slide member 120 having a length straddling 110B and 110C is slidably inserted. A spring 121 is wound around the outer circumference of the slide member 120, and the spring force of the spring 121 constantly exerts a forward force toward the rising portion 110B on the slide member 120. The direction of this forward force is a direction in which the first portion 31A of the lever member 31 provided in the switch 10 is moved to the left.

An actuating member 122 is attached to the bent portion 120A formed by bending downward at the front end of the slide member 120. The actuated member 123 is vertically connected to the first portion 31A of the lever member 31. When the slide member 120 is advanced by the spring force of the spring 121, the actuating member 122 abuts on the actuated member 123, so that a load to the left is applied to the first portion 31A of the lever member 31. ing. Since the actuating member 122 is the head portion 124A of the bolt 124, the head portion 124A is rotated to move the bolt 124 forward and backward with respect to the bent portion 120A of the slide member 120, so that the actuating member 122 and the actuated member 122 are actuated. The distance between the member 123 and the member 123 can be adjusted to an appropriate dimension. After making this adjustment, the lock nut 125 screwed into the bolt 124 is rotated and the lock nut 125 is pressed against the bent portion 120A to position the operating member 122 with respect to the actuated member 123. , Fix it in the proper position.

A solenoid 126 is attached to the machine frame 110 of the automatic closing device 12, and the spring force of the spring 128 always causes the plunger 127 to protrude from the solenoid 126 (to the left of the paper) in the plunger 127 of the solenoid 126. It's working. One end of the L-shaped bending lever member 129 that is rotatable around the central axis 129A is connected to the tip of the plunger 127 by a sliding connecting portion 129B, and is connected to the trigger lever member. A roller 130 is rotatably provided at the other end of the bending lever member 129.

A recess 120B is formed in the portion of the slide member 120 facing the roller 130. The portion of the recess 120B on the retracting side of the slide member 120 is an inclined surface 120C. Further, in the automatic closing device 12, a spring 131 for applying a rotational force in the G direction centering on the central axis 129A to the bending lever member 129, and a direction in which the plunger 127 is projected from the solenoid 126 together with the above-mentioned spring 128. A spring 132 that urges the spring and rotates the bending lever member 129 in the G direction about the central axis 129A is provided, and the spring force of these springs 128, 131, 132 causes the roller 130 in a normal state. Is fitted in the recess 120B, and by this fitting, the advance of the slide member 120 by the spring 121 described above is stopped. The position of the front end of the slide member 120 when the advance is stopped by the roller 130 fitted in the recess 120B is the position H among the three positions H, I, and J.

An electric switch 135 is arranged in the automatic closing device 12, and the electric switch 135 is provided with an actuator 136 which is urged by a spring in a direction protruding from the electric switch 135. Further, a dog member 137 is attached to the slide member 120 at a portion opposite to the recess 120B, and the actuator 136 is in contact with the dog member 137.

A connecting member 138 provided with a first connecting portion 138A and a second connecting portion 138B is coupled to the slide member 120, and a connecting member 140 is coupled to the tip of the plunger 127 of the solenoid 126, as described above. One end of the spring 132 is connected to the connecting member 140. The other end of the wire 111 is connected to the first connecting portion 138A of the connecting member 138 of the slide member 120, and the end of the wire 112 is connected to the connecting member 140 coupled to the plunger 127 for third control. The end of the wire 113 is connected to the second connecting portion 138B of the connecting member 138 of the slide member 120.

The wire 112 inserted into the outer cable 115 extends to the manual closing device 119, and at the end of the wire 112 protruding from the outer cable 115, a lever member or the like arranged in the manual closing device 119 is used. The manually operated members are connected. Further, the wire 113 inserted inside the outer cable 116 also extends to the manual closing device 119, and the lever member arranged in the manual closing device 119 also at the end of the wire 113 protruding from the outer cable 116. Manual operation members such as are connected.

When a disaster such as a fire occurs when the shutter curtain 14 is stopped at the fully open position or at a position in the middle of the opening / closing movement direction, when a signal from a sensor that detects this disaster is input, a control device (not shown) may be used. By energizing the solenoid 126 of the automatic closing device 12 and exciting the solenoid 126, the plunger 127 of the solenoid 126 is retracted against the spring force of the spring 128, so that the bending lever member 129 is moved to the springs 131 and 132. It can be rotated around the central axis 129A in the direction opposite to the G direction in FIG. 12 against the spring force.

When the bending lever member 129 rotates around the central axis 129A in the direction opposite to the G direction, the roller 130 of the bending lever member 129 escapes from the recess 120B of the slide member 120, so that the slide member 120 has the spring force of the spring 121. The advance is stopped when the front end of the connecting member 138 comes into contact with the above-mentioned rising portion 110B of the machine frame 110 of the automatic closing device 12. At this time, the position of the front end of the slide member 120 is the position I, which is the frontmost position among the three positions H, I, and J.

Further, when the slide member 120 advances, the actuator 136 of the electric switch 135 is displaced from the position of the dog member 137 attached to the slide member 120, so that the actuator 136 protrudes and moves due to the urging force of the spring, so that the electric switch 135 The above control device stops energizing the solenoid 126 by the signal from.

By stopping the energization of the solenoid 126, the plunger 127 protrudes from the solenoid 126 by the spring force of the spring 128, and the bending lever member 129 rotates in the G direction around the central axis 129A by the spring force of the springs 131 and 132. do. Since the slide member 120 at this time has advanced to the movement limit where the front end of the slide member 120 reaches the I position, the roller 130 of the bending lever member 129 hits the above-mentioned inclined surface 120C of the slide member 120. Therefore, the protruding movement of the plunger 127 and the rotation of the bending lever member 129 about the central axis 129A in the G direction are stopped halfway.

When the slide member 120 of the automatic closing device 12 advances as described above, the actuating member 122 provided at the front end of the slide member 120 is the first lever member 31 of the opening / closing machine 10 via the actuated member 123. In order to press the portion 31A to the left in FIG. 3, as described above, the first portion 31A swings with the second bent portion 31D of the lever member 31 as a fulcrum, whereby the brake of the brake 11 of the opening / closing machine 10 is braked. The shaft and the brake drum slide in the same direction as the swing direction, whereby the brake 11 that had been turned on until then is turned off. Therefore, the shutter curtain 14, which has been fully opened, closes and moves downward while rotating the take-up shaft due to the weight of the seat plate or the like below the take-up shaft, and the switch 10 The drive shaft described above also freely rotates via the drive force transmitting means, and the shutter curtain 14 is fully closed, so that a disaster prevention section is formed by the shutter curtain 14.

When a person discovers that a disaster such as a fire has occurred, the wire 112 is arranged by a manual closing device 119 and is connected to the end of the wire 112 by a manually operated member such as a lever member. To operate by pulling. As a result, the plunger 127 of the solenoid 126 retracts, so that even before the solenoid 126 is energized and excited, the bending lever member 129 is centered on the central axis 129A as in the case when the solenoid 126 is energized and excited. Since it rotates in the direction opposite to the G direction in FIG. 12, the roller 130 of the bending lever member 129 escapes from the recess 120B of the slide member 120, and the slide member 120 advances by the spring force of the spring 121.

When the shutter curtain 14 reaches the fully closed position and the disaster such as a fire is resolved, the manual closing device 119 is arranged by the manual operation member such as the lever member connected to the end of the wire 113. The wire 113 is pulled and operated. As a result, since the wire 113 is connected to the slide member 120 of the automatic closing device 12, the slide member 120 retracts against the spring force of the spring 121. Therefore, the slide member 120 returns to the initial position where the front end is the position H. Further, when the slide member 120 returns to the initial position H, the bending lever member 129 rotates in the G direction by the spring force of the springs 131 and 132 around the central axis 129A, so that the roller 130 of the bending lever member 129 Will be fitted into the recess 120B of the slide member 120, and the slide member 120 will stop when the front end of the slide member 120 reaches the position H. As a result, the automatic closing device 12 returns to the initial state before a disaster such as a fire occurs.

When the slide member 120 returns to the initial position H, the brake shaft and the brake drum of the brake 11 of the switch 10 move in the opposite direction by the spring, so that the brake 11 returns to ON. After that, the shutter curtain 14 is opened and moved to the fully open position by operating the open button provided on the manual closing device 119.

In the fire protection compartment forming apparatus shown in FIG. 1, the shutter curtain 14 is fully closed by a sensor detecting the occurrence of a disaster such as a fire or by a person who discovers the occurrence of a disaster such as a fire by pulling the wire 112. It is possible to form a disaster prevention area. However, if the signal line that transmits the signal from the sensor is cut due to some kind of obstacle, or if there is no person who performs the pulling operation, the fire protection compartment forming device can no longer form the fire protection compartment.

Therefore, in this embodiment, a temperature fuse type sensing device 11d using a temperature fuse that blows due to heat at the time of a fire as a sensor is installed near the magus of the fire shutter device (upper side of the opening), and this temperature fuse type is used. The brake 11 is released in response to a mechanical sensing signal (movement of the wire 11e) from the sensing device 11d, and the fireproof shutter curtain 14 in the wound state is lowered by its own weight.

4 and 5 are diagrams showing a schematic configuration of a temperature fuse type sensing device using a temperature fuse that blows due to heat at the time of a fire as a sensor. FIG. 4 shows a state before the thermal fuse is blown by heat, and FIG. 5 shows a state after the thermal fuse is blown by heat. In FIG. 5, the same components as those in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted.

The temperature fuse type sensing device 11d is composed of a frame 101 made of a thin plate having a height of about 20 mm, a total length of about 130 mm, a depth of about 15 mm, and an overall shape of a rectangular parallelepiped and a thickness of about 1 to 2 mm. In FIGS. 4 and 5, the frame 101 on the front side is omitted, and the internal configuration thereof is shown. Forage mounting holes 102a and 102b having a diameter of about 4 mm are formed on the upper portion of the frame 101.

There is no thin plate of the frame 101 on the lower left surface of the frame 101, and a decorative cover 104 that rotates around the first axis 103 as a rotation axis is provided. The decorative cover 104 has a concave shape when viewed from the left side. The first shaft 103 is attached so as to be scissored by thin plates in front of and behind the frame 101. At the left end of the decorative cover 104, there is a mountain-shaped convex portion having a hole for inserting the first shaft 103 side. A hole in the decorative cover 104 is inserted through the first shaft 103 and is rotatably attached. The decorative cover 104 rotates clockwise from the lower surface of the frame 101 about the first axis 103.

Approximately in the center of the decorative cover 104, there is a hole in the mountain-shaped convex portion for passing through the second axis 105. The second axis 105 is inserted through a mountain-shaped convex portion formed substantially in the center of the decorative cover 104. The decorative cover 104 is further provided with a reset lever 106 that rotates around the second axis 105 as a rotation axis. The reset lever 106 has a Z shape and has an opening at one end thereof for inserting the second shaft 105.

The right end of the reset lever 106 and the right end of the decorative cover 104 each have an elongated long opening for inserting the engaging member 107a of the thermal fuse 107. This elongated opening is formed along the longitudinal direction of the frame 101 (the left-right direction of the paper surface). The engaging member 107a of the thermal fuse 107 is provided with a long member having a shape through which a long opening is inserted in the front-rear direction of the paper surface of FIG. That is, after the engaging member 107a of the thermal fuse 107 has passed through the elongated opening, the thermal fuse 107 is rotated about 90 degrees about the longitudinal direction of the engaging member 107a to form the elongated shape. The structure is such that the longitudinal direction of the opening and the longitudinal direction of the elongated member of the engaging member 107a engage with each other so as to form 90 degrees with each other, and the thermal fuse 107 does not come out from the elongated opening. It has become.

On the bent portion side of the flat portion on the left side of the reset lever 106, openings (not shown) for forming a rod-shaped engaging member for engaging the wire 11e in a sling shape are provided at two front and rear positions. There is. The tip of the wire 11e is bent by an engaging member from the upper part of the opening on the right side of the reset lever 106, passes through the lower part of the opening on the left side, and is caulked and fixed to the wire 11e by the crimping sleeve 109. That is, the tip of the wire 11e forms a sling-shaped ring, and this ring is engaged with the rod-shaped engaging member of the reset lever 106. The wire 11e is introduced from the outside via a guide wheel 108 provided on the upper left side of the frame 101.

A return force is constantly applied to the wire 11e, whereby a tensile stress (tension) in the counterclockwise direction about the second axis 105 is constantly applied to the reset lever 106. Therefore, when the thermal fuse 107 is melted by heat, the thermal fuse 107 and the engaging member 107a are separated according to the rotation of the reset lever 106. When the engaging member 107a is separated from the thermal fuse 107, the reset lever 106 rotates counterclockwise as shown in FIG. On the other hand, the decorative cover 104 rotates in the opposite clockwise direction. When the right tip of the reset lever 106 stops in contact with the inner wall surface of the upper part of the frame 101, the rotation of the decorative cover 104 also stops. The reset lever 106 rotates counterclockwise, the decorative cover 104 rotates clockwise, and each stops, so that the tension of the wire 11e is released.

On the other hand, in FIG. 5, the wire 11e on the outside of the temperature fuse type sensing device 11d is slidably inserted and protected inside the flexible outer cable (not shown), and is shown in FIGS. 2 and 3. It is introduced in the automatic closing device 12. In FIGS. 2 and 3, the wire 11e is not shown. This is an unlocking device that is coupled to the wire 11e and acts on the plunger 127 of the solenoid 126 of FIGS. 2 and 3 in response to the release of tension of the wire 11e to move the plunger 127 to the solenoid 126 side (to the right of the paper). 200 is newly installed.

FIG. 6 is a diagram showing the configuration and installation state of the unlocking device installed in the automatic closing device shown in FIG. FIG. 7 is a diagram showing the configuration and installation state of the unlocking device installed in the automatic closing device shown in FIG. In FIGS. 6 and 7, the same components as those in FIGS. 2 and 3 are designated by the same reference numerals, and the description thereof will be omitted. FIG. 6A shows a front view of the unlocking device 200. FIG. 6B shows a side view of the unlock plate 202 constituting the unlock device 200. FIG. 6C is a diagram showing an installed state of the unlocking device 200 on the automatic closing device 12 of FIG. FIG. 7A shows a top view of the unlocking device 200. FIG. 7B is a diagram showing an installed state of the unlocking device 200 on the automatic closing device 12 of FIG. In FIGS. 6C and 7B, the installation state of the unlocking device 200 is shown by a dotted line.

The unlocking device 200 includes a base frame 201, an unlocking plate 202, a return spring 203, collars 204 and 205, fixing screws 206 to 209, and sems screws 210 and 211. The base frame 201 has a Z shape as shown in FIG. The left end portion of the base frame 201 has a rising portion 201a which is contact-fixed to the inner surface of the rising portion 110B of the machine frame 110 of the automatic closing device 12 by fixing screws 208 and 209. Further, as shown in FIGS. 6A and 7A, the base frame 201 has a mounting plate 201b having the same shape as the rectangle of the upper plate of the solenoid 126. The mounting plate 201b is contact-fixed to the upper surface of the upper plate of the solenoid 126 by the fixing screws 206 and 207, as shown in FIGS. 6 (C) and 7 (B).

As shown in FIG. 6A, the unlocking plate 202 has a substantially rectangular shape, and as shown in FIG. 6B, the central portion has a convex shape toward the left and a concave shape toward the right. It has a shape. The unlock plate 202 is rotatably attached to the base frame 201 by a sems screw 211 via an opening provided in the concave flat portion. A collar 204 as a spacer is provided on the sems screw 211 between the unlock plate 202 and the base frame 201.

A return spring 203 is provided around the collar 204 between the unlock plate 202 and the base frame 201. The return spring 203 is a kind of coil spring, and is a torsion coil spring configured to receive a torsion moment around the central axis of the coil. The return spring 203 generates a twisting moment in the direction in which both arms are opened.

As shown in FIGS. 6 (A) and 7 (A), the end of one arm of the return spring 203 is provided so as to project from a hole provided near the center of the bent portion of the base frame 201. .. As shown in FIG. 6A, the other end of the return spring 203 is provided so as to project from a hole provided at the left end near the center of the unlock plate 202 in the vertical direction. Therefore, a twisting moment is applied to the lock release plate 202 in the counterclockwise direction around the sems screw 211 by the return spring 203. The sems screw 210 is attached to the base frame 201 via the collar 205. The sems screw 210 and the collar 205 define their rotation region by contacting the unlock plate 202.

An opening 202a for engaging the wire 11e (not shown) of the temperature fuse type sensing device 11d of FIGS. 4 and 5 in a sling shape is provided on the upper portion of the unlock plate 202. In FIG. 6A, the lock release plate 202 represented by a solid line shows a position in a state where tension is not applied to the wire 11e (not shown). On the other hand, the unlocked plate 202 shown by the dotted line indicates the position of the wire 11e (not shown) in a state where tension, that is, tensile stress to the right is applied. The lower portion of the unlock plate 202 has a hammer-shaped contact portion 202b that abuts on the left side of the plunger 127 of the solenoid 126 and retracts the plunger 127 against the spring force of the spring 128.

In the event of a disaster such as a fire, the thermal fuse 107 of the thermal fuse type sensing device 11d in FIG. 4 is melted by heat, so that the thermal fuse type sensing device 11d is in the state as shown in FIG. The tension of 11e is released. When the tension of the wire 11e is released, the lock release plate 202 rotates from the position of the dotted line in FIG. 6A to the position of the solid line. When the unlock plate 202 rotates to the position of the solid line, the plunger 127 of the solenoid 126 retracts due to the contact portion 202b of the unlock plate 202, the holding of the open state by the brake 11 is released, and the shutter curtain 14 is under its own weight. It descends, closes the openings and forms a fire protection compartment.

In FIGS. 4 and 5, the thermal fuse 107 corresponds to the thermal fuse means that blows under predetermined conditions. The decorative cover 104, the reset lever 106, and the like correspond to the movable means that can be mechanically moved according to the blow of the thermal fuse means. The conditions for blowing the thermal fuse 107 are as stipulated by the Building Standards Law. Air heated to 50 degrees is applied at a wind speed of 1 m / s for 5 minutes and does not operate, and at 90 degrees it operates within 1 minute. This condition also applies to this embodiment, as it is stipulated to be used. It should be noted that this condition may be variously changed and applied depending on the place where the fire protection compartment forming device is installed and the like. Further, in order to ensure this condition, in this embodiment, a heat insulating plate 107b is provided between the decorative cover 104 and the thermal fuse 107. This is because the movable means such as the frame 101, the decorative cover 104, and the reset lever 106 are made of metal, so that these heats are not directly transferred to the thermal fuse 107.

In the above-described embodiment, the shutter curtain that is extended by the vertical elevating method has been described as an example, but the same applies even if the shutter-shaped opening / closing member is extended by the horizontal pulling method or the horizontal method. Can be applied to. Examples of the opening / closing device include a shutter device, a window shutter device, a blind device, a roll screen device, a hanging curtain device, a smoke-proof hanging wall device, a hinged door device, a folding door device, a sliding door device, a moving partition device, and an awning device. It can also be applied to waterproof plate devices.
A surveillance camera, a motion sensor, or the like may be installed around the fire shutter device and the fire door, and each operation may be controlled based on the captured image of the camera, the detection information of the motion sensor, and the like.

100 ... Fire shutter device 101 ... Frame,
104 ... Cosmetic cover 106 ... Reset lever 107 ... Temperature fuse 107a ... Engagement member 107b ... Insulation plate 108 ... Caller 10 ... Switch 11 ... Brake 111-113 ... Wire 114-116 ... Outer cable 119 ... Manual closing device 11a ... Obstacle sensing device 11d ... Temperature fuse type sensing device 11e ... Wire 12 ... Automatic closing device 126 ... Solenoid 127 ... Plugger 14 ... Shutter curtains 15, 16 ... Guide rail 200 ... Unlocking device 201 ... Base frame 201a ... Rising part 201b ... Mounting plate 202 ... Unlocking plate 202a ... Opening 202b ... Contact part 203 ... Return spring 204, 205 ... Color 206-209 ... Fixing screw 210, 211 ... Solenoid screw 24 ... Closing confirmation switch 320 ... Fireproof door 321 ... Dive door 322 ... Automatic closing device for fireproof door 323 ... Door pocket

Claims (3)

A thermal fuse means that blows under predetermined conditions,
A first movable means that is mechanically movable according to the blowing of the thermal fuse means,
A wire means arranged to move according to the movement of the first movable means, and a wire means.
It is characterized by being provided with a second movable means for moving the electrically held holding means in the releasing direction according to the movement of the wire means to release the holding state and executing the closing operation of the opening / closing body means. Temperature fuse type sensing device. A fireproof section is formed in the building by releasing the holding state of the holding means provided in the building and electrically holding in response to the input of the closing instruction signal and partitioning the space in the building by the opening / closing body means. In the fire protection compartment forming device
The holding means electrically held by the thermal fuse type sensing device according to claim 1 is provided by blowing the thermal fuse means of the thermal fuse type sensing device and moving the wire means. A fire protection compartment forming device characterized in that the movable means of 2 moves in the release direction, the holding state of the holding means is released, and the closing operation of the opening / closing body means is executed. A fireproof section is formed in the building by releasing the holding state of the holding means provided in the building and electrically holding in response to the input of the closing instruction signal and partitioning the space in the building by the opening / closing body means. In the fire protection section formation method
The holding means electrically held by installing the temperature fuse type sensing device according to claim 1 and blowing the temperature fuse means of the temperature fuse type sensing device and moving the wire means is described. A method for forming a fire protection compartment, characterized in that a second movable means is moved in a release direction to release the holding state, and the closing operation of the opening / closing body means is executed.

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