JP5452261B2 - Opening assist device - Google Patents

Description

  The present invention relates to a door opening assist device that assists in opening a door when a high pressure is generated by supplying gas into the room.

Conventionally, in a clean room equipped with precision equipment such as large computers and servers, semiconductor manufacturing equipment, etc., a fire extinguishing system has been provided that quickly extinguishes fire in order to protect precision equipment etc. Yes. When extinguishing a fire with water or a chemical fire extinguishing agent, the equipment may be damaged or malfunctioned or malfunctioned. Therefore, fire extinguishing gas is generally used as a fire extinguishing agent.
For example, in the fire extinguishing system described in Patent Document 1, gas fire extinguishing equipment is used to inject and fill a fire extinguishing gas composed of an inert gas such as nitrogen gas, carbon dioxide gas, and halogen gas or an incombustible gas. .
Such gas fire extinguishing equipment is effective for fire extinguishing in a room where precision equipment such as a large computer is installed. In this gas fire extinguishing equipment, high-pressure fire extinguishing gas is ejected at high speed from a nozzle that opens in the room so that a large amount of fire extinguishing gas can be filled in the target room in a short time.

In this case, in the conventional gas fire extinguishing system, the room is filled with a large amount of fire extinguishing gas in a short time for quick fire extinguishing, and thus the room becomes high pressure in a short time. Therefore, high pressure is applied to the door for entering and exiting the room.
On the other hand, for example, a latch lock is provided on an open / close door provided in a room in which precision instruments are installed. In the latch lock, a latch bolt provided on the other door is engaged with a strike provided on one door or wall.

JP 2000-60984 A

However, when the room is filled with gas due to the ejection of the fire extinguishing gas and the pressure becomes high, for example, as shown in FIG. 7, the fire door 1 in the room 5 is pushed by the gas pressure and receives pressure in the opening direction to open the door 2. , 3 are bent and deformed, and the latch 4 may be deformed in an engaged state with the strike. In addition, hinges, order adjusters, door checks, joinery frames, etc. may also be deformed and cause failures or catches.
In particular, since the latch bolt of the latch lock provided on the door opening and closing part engages with the strike, the gas pressure causes biting and locking, so the operator rotates the lever and knob to open the door in an emergency. Even in this case, the door may not open easily.

  In view of such circumstances, an object of the present invention is to provide a door opening assist device that reliably opens a door even when the interior of a room becomes high pressure due to a jet of fire extinguishing gas or the like.

Door open assist device according to the present invention, the door opening device for an door lock is applied in the closed state,
A generator that is provided at a pressure relief port formed on a door or a wall surface and generates power by a pressure difference between inside and outside;
Drive means driven by the power generated by the generator and a door opening assist mechanism for applying a force in the door opening direction to the door based on the driving force of the drive means so that the pressure in the room exceeds the atmospheric pressure. In this case, power is generated by the generator due to the pressure difference between the inside and outside of the chamber, and the door opening assist mechanism is operated by the driving means to assist the door opening operation.
According to the door opening assist device according to the present invention, when the pressure in the room increases and a pressure difference between the inside and outside of the room occurs, electric power is generated by the generator provided in the pressure relief port based on the pressure difference. The door opening assist mechanism is actuated by driving of the driving means supplied with the door, and the door opening force is given by the door opening assist mechanism to assist the door opening operation. For example, the door is forcibly locked even if the lock is engaged. To release.

Door open assist device according to the present invention, the door opening device for an door lock is applied in a closed state, and a fan provided on避圧port formed in the door or wall, a generator for generating electric power by rotational force of the fan A drive motor that is electrically connected to the generator and driven by the generated power, and a door opening assist mechanism that applies a force in the door opening direction to the door based on the driving force of the drive motor. When the air pressure exceeds the atmospheric pressure, the fan rotates due to the pressure difference between the inside and outside of the room, and the generator generates electricity and transmits it to the drive motor to assist the door opening operation with the door opening assist mechanism. It is characterized by.
According to the door opening assist device of the present invention, when the pressure in the room increases and a pressure difference between the inside and outside of the room occurs, the fan provided at the pressure avoidance port rotates based on the pressure difference and power is generated by the generator. The door opening assist mechanism is operated by driving the drive motor that generates power and is supplied with this power. Therefore, the operating force of the door opening assist mechanism assists the door opening operation, and for example, the door is forcibly opened even if the latch and the strike of the lock are engaged.

In addition, a battery for storing electric power is connected in parallel to the drive motor, and when the electric lock or latch lock provided on the door is opened, the electric power stored in the battery is discharged to the drive motor. Good.
Even if the generator generates electricity based on the pressure difference between the inside and outside and supplies it to the drive motor, if the timing of the door opening assist mechanism by the drive motor does not coincide with the timing of the door opening operation by an operator, etc., the assisting force by the drive motor However, in this case, the battery can be stored in a battery connected to the drive motor. Then, when the door is opened, the battery power is discharged and the drive motor activates the door opening assist mechanism. Therefore, the door opening assisting force can be applied as an assist, for example, the lock latch and strike Force the doors to open even if they bite.

The door opening assist mechanism transmits to the rack the rotational force of the operating shaft provided on the base shaft provided on the wall surface or the door so as to be rotatable, the rack formed on the operating shaft, and the drive motor provided on the door or the wall surface. And a pinion for applying a tensile force to the operating shaft, and an auxiliary force in the door opening direction may be applied by relatively pulling the operating shaft by the rotational force of the drive motor.
According to the configuration of the door opening assist function, the driving force of the drive motor is relatively pulled from the pinion through the rack, so that the door is provided with an assisting force in the opening direction.

In addition, the door opening assist mechanism transmits the rotational force of the door check that adjusts the closing speed of the door, the rack formed on the door check operating shaft, and the drive motor provided on the door to the rack, and the tensile force on the operating shaft. And an auxiliary force in the opening direction of the door may be applied by pulling the operation shaft of the door check relatively by the rotational force of the drive motor.
According to the door opening assist mechanism of the present invention, the driving force of the driving motor is relatively pulled from the pinion through the rack, so that the door is provided with the assisting force in the opening direction.

In addition, a latch that can be advanced and retracted may be provided at one of the joint where the doors are closed or the joint between the door and the wall surface, and the other may be provided with a strike for engaging the latch.
Due to the high pressure inside the door, the door deforms and the door is closed and the bite between the latch and the strike is difficult to come off, but the door opening assist device according to the present invention forcibly resists the biting resistance. The door can be opened.

According to the door opening assist device of the present invention, the pressure in the room increases and electric power is generated by the generator based on the pressure difference between the inside and outside of the room, and the door opening assist mechanism is operated by the driving means using this electric power. assist the door opening operation of the lock is applied Te, when opening operation of the door, it is possible to forcibly open the door.
Further, according to the door opening assist device according to the present invention, when the interior of the room becomes higher than the atmospheric pressure due to the injection of fire extinguishing gas, etc., the generator is generated by the rotation of the fan provided in the pressure relief port, and the drive motor is driven to open. When the door is opened by the door assist mechanism , an auxiliary force in the opening direction can be applied to the locked door.
Therefore, when the chamber door is to be opened in a high-pressure atmosphere, power can be generated using the pressure difference between the inside and outside, and an assisting force can be applied to the door opening operation via the door opening assist mechanism.

The fire door provided with the opening assistance apparatus by 1st embodiment of this invention is shown, (a) is a top view, (b) is a front view. It is a principal part perspective view of the opening assistance apparatus provided in the fire prevention door. It is explanatory drawing which shows the principal part structure of the door opening assistance apparatus shown in FIG. It is a front view which shows the fire door provided with the door opening assistance apparatus by 2nd embodiment of this invention. It is a principal part perspective view of the door opening assistance apparatus provided in the fire door shown in FIG. It is explanatory drawing which shows the principal part structure of the door opening assistance apparatus shown in FIG. It is a top view which shows the conventional fire door.

Hereinafter, the door opening assistance apparatus provided in the fire prevention door by embodiment of this invention is demonstrated.
As shown in FIGS. 1 to 3, the opening assist device for the fire door according to the present embodiment includes a room 5 in which a precision device such as a large computer or a server is installed, a room 5 such as a clean room in which a semiconductor manufacturing apparatus is installed, and the like. The door 5 is installed so as to be openable and closable so as to communicate / partition with an external space such as a corridor connected via a door opening 10 formed in the wall of the room 5. Further, the room 5 is equipped with a gas fire extinguishing system that injects an inert gas such as nitrogen gas, carbon dioxide gas, halogen gas or the like and a nonflammable gas (extinguishing gas) at a high pressure as a fire extinguishing agent.

The room 5 is provided with a fire door 20 as shown in FIG. The fire door 20 is, for example, a double door with left and right doors 21 and 22, and the left and right doors 21 and 22 can be opened and closed by hinges 23. The fire door 20 may be a single door in which only one door 21 is provided and the wall surface of the room 5 is formed in place of the other door 22.
A cylinder lock 26 and a latch lock 27 are provided on the end surfaces 21 a and 22 a on the center side of the left and right doors 21 and 22 that are joined to each other. An electric lock may be provided together with the cylinder lock 26 or instead of the cylinder lock 26. The cylinder lock 26 is provided with a thumb turn and a dead bolt 28 for use indoors in one door 21, and a strike 29 for receiving and locking the dead bolt 28 in the other door 22. In the latch lock 27, a latch 31 provided on one door 21 is engaged with a strike 32 provided on the other door 22.
The latch lock 27 is provided with a lever handle 33 for removing the latch 31 from the strike 32, but a door knob may be provided instead of the lever handle 33. A door closer 34 for adjusting the closing speed of the doors 21 and 22 is provided at the upper part of the doors 21 and 22 on the hinge 23 side.

Next, the door opening assist device 36 for the fire door 20 will be described.
1, FIG. 2 and FIG. 3 are views showing the configuration of the door opening assist device 36 according to the first embodiment of the present invention. In FIG. 1, one door 21 is provided with, for example, a circular opening pressure-reducing opening 37, and a fan 38 is attached to the pressure-reducing opening 37.
For example, a normally closed damper (not shown) is provided in the pressure avoidance port 37 so as to overlap the fan 38. When the pressure in the room 5 exceeds the atmospheric pressure, the damper opens and the fan 38 rotates. start. Conversely, the damper is closed when the pressure in the room 5 drops to atmospheric pressure or a pressure close thereto. In addition, when this pressure relief port 37 is provided, it is not necessary to provide the pressure avoidance port 18 mentioned above.

2 and 3, the rotation shaft 39 of the fan 38 of the pressure avoidance port 37 is connected to a generator (generator) 40, and is rotated by the generator 40 based on the rotation of the rotation shaft 39 when the fan 38 rotates. Generate electricity. The electric power generated by the generator 40 is supplied to the drive motor M provided on the door 21 via the wiring 42.
The drive motor M is attached to the outer surface of the door 21 opposite to the interior of the room 5 and is accommodated in the drive case 44. A door opening assist mechanism 45 is attached to the wall surface 41 of the housing adjacent to the drive case 44.
The door opening assist mechanism 45 is formed by a base shaft 46 and an operation shaft 47, the base shaft 46 is fixed to the wall surface 41, and the operation shaft 47 is rotatably attached to the tip of the base shaft 46 by a pin or the like. The other end side of the operating shaft 47 is disposed so as to enter a long hole 48 provided in the drive case 44, and a rack 50 is formed on the operating shaft 47 along the longitudinal direction (see FIG. 3).

On the other hand, the drive motor M is provided with an output shaft 51 through a reduction mechanism (not shown) or directly, and a pinion 52 that meshes with the rack 50 of the operation shaft 47 is fixed to the output shaft 51. An elastic member such as a coil spring that presses the rack 50 against the pinion 52 may be attached to the operating shaft 47. Therefore, when the drive motor M rotates counterclockwise in FIG. 3, the operating shaft 47 is relatively pulled by the drive force of the drive motor M, and the door 21 rotates around the hinge 23 by the reaction force to be opened. An auxiliary force is applied in the direction.
Therefore, the interior of the room 5 becomes high pressure due to the gas pressure of the fire extinguishing gas, and power is generated by the fan 38 of the pressure avoidance port 37, and the driving motor M gives the door 21 auxiliary force in the door opening direction. When the operator rotates the lever handle 33 or the knob of the door 21, the door 21 is given a force in the door opening direction, so that the door 21 can be easily opened.

In the door opening assist device 36, the lever operation of the lever handle 33 or the knob by the operator may be delayed with respect to the power generation by the generator 40. In order to assist in opening the door even in such a case, a battery 54 is arranged in parallel with the drive motor M in the wiring 42 of the generator 40 in FIG. One end of the wiring 42 connecting the battery 54 and the drive motor M in parallel is connected to the generator 40, and the other end is grounded.
Therefore, when the fan 38 rotates, the generator 40 generates power by the rotation of the rotating shaft 39, and the electric power generated by the generator 40 is provided outside the door 21 (on the opposite side to the room 5) via the wiring 42. The battery 54 is charged.

The door opening assist device 36 according to the present embodiment has the above-described configuration, and the operation thereof will be described next.
In FIG. 2, it is assumed that an electric lock and a cylinder lock 26 (not shown) are unlocked and the latch locks 27 of the doors 21 and 22 of the fire door 20 are closed.
For example, when a fire occurs in the room 5 and is detected by a sensor such as a fire alarm (not shown), the fire extinguishing gas supply mechanism 4 releases the fire extinguishing gas from the nozzle 12 into the room 5.
When the fire extinguishing gas is filled in the room 5 and the gas pressure in the room 5 exceeds the atmospheric pressure, the damper of the pressure relief port 37 is opened, and the fire extinguishing gas pressure is externally passed from the room 5 through the pressure relief port 37. To leak.
Then, in FIG. 2, the fan 38 is rotated by the fire extinguishing gas flow, and the rotating shaft 39 rotates integrally to generate power by the generator 40. The electric power generated by the generator 40 is supplied to the drive motor M via the wiring 42, and the output shaft 51 and the pinion 52 are rotated counterclockwise so as to mesh with the rack 50 of the operating shaft 47 to operate the operating shaft 47. A load acts in the direction of pulling (see FIG. 3).

At this time, if the lever handle 33 or the knob is not rotated and the latch 31 of the latch lock 27 is engaged with the strike 32, the power generation by the generator 40 and the timing of opening the door do not overlap. Even if the load of the drive motor M is applied, the door is not opened. For this reason, electric power is input and stored in the battery 54 to which the wiring 42 is connected in parallel.
When the inside of the room 5 is in a high-pressure gas state by the gas supplied from the nozzle 12, the doors 21 and 22 are pushed by the pressure and start to deform around the central portion. In this state, when the operator rotates the lever handle 33 or the knob in order to get out of the room 5 in the high-pressure gas state, the latch 31 advances into the strike 32 and engages with it. The handle 33 or knob is difficult to rotate.

However, even in this case, power is generated by the generator 40 by the rotation of the fan 38 due to the gas flow flowing out of the pressure relief port 37, and the door 21 is opened by the meshing of the rack 50 and the pinion 51 by the rotational force of the drive motor M. Power is working. Therefore, the door 21 receiving the load in the opening direction overcomes the door opening resistance due to the engagement of the latch 31 and the strike 32 and the engagement of the latch 31 and the strike 32 is released, and the door can be forcibly opened.
In addition, when power is consumed by the opening operation of the door 21 by the drive motor M applied to the lever handle 33 or the knob turning operation, the power stored in the battery 54 is discharged to the drive motor M and the drive motor M Drive is urged, and the assisting force for opening the door 21 is further applied.

Thereby, even if the door opening resistance due to the engagement of the latch 31 and the strike 32 is generated, the driving force by the driving motor M and the turning operation of the lever handle 33 or the knob overcome the door opening resistance and the latch 31 and the strike 32. Can be forcibly opened.
In the opening operation of the door 21, in FIG. 3, the door 21 starts to open around the hinge 23 by the reaction force caused by the tensile force caused by the engagement between the pinion 52 of the drive motor M and the rack 50 of the operating shaft 47. The operating shaft 47 of the door opening assist mechanism 45 rotates with respect to the base shaft 46 in conjunction with the opening of the motor 21 and follows the pinion 52 of the drive motor M. As a result, the door 21 is opened by forcibly removing the latch 31 from the strike 32 of the other door 22 and the door 21 is opened.

As described above, according to the opening assist device 36 for the fire door 20 according to the first embodiment, the interior of the room becomes higher than the atmospheric pressure due to the injection of fire extinguishing gas and the like, and the doors 21 and 22 are deformed, and the latch lock 27 is Even if the latch 31 is engaged with the strike 32, the lever handle 33 or the knob is rotated, and the electric power generated by the generator 40 is used to generate the driving force generated by the engagement of the pinion 52 by the driving motor M and the rack 50 of the operating shaft 47. The door 21 can be forcibly opened by the reaction force.
In particular, the fan 38 of the pressure-reducing opening 37 is rotated by the gas flow caused by the pressure difference between the inside and outside of the room 5 and the generator 40 generates power. Then, the door 21 can be forcibly opened by generating electricity.
Further, since the battery 54 is provided in parallel with the drive motor M, the auxiliary handle for opening the door 21 by supplying the drive motor M with the timing of turning the lever handle 33 or the knob and the power generated by the generator 40. Even when the timing does not match, the electric power generated by the generator 40 can be stored in the battery 54, so that the electric power can be efficiently supplied to the drive motor M by discharging when the door 21 is opened.

The door opening assist device 36 for the fire door 20 according to the present invention is not limited to the above-described configuration, and can be arbitrarily changed or replaced without departing from the gist of the present invention.
Next, a door opening assist device 56 for the fire door 20 according to the second embodiment of the present invention will be described with reference to FIGS. 4 to 6. The same reference numerals are used for the same or similar parts and members as those of the first embodiment described above. Description is omitted. The door opening assist device 56 according to the second embodiment directly supplies the electric power generated by the generator 40 due to the rotation of the fan 38 provided at the pressure avoidance opening 37 to the drive motor M, and the door check 57 is operated to open the door. It is designed to give power.
In the door opening assist device 56 of the fire door 20 according to the second embodiment shown in FIG. 4, a fan 38 is provided in the pressure avoidance opening 37 formed in, for example, one door 21 of the fire door 20, and the rotation shaft 39 rotates. The power is generated by the generator 40.

On the other hand, in FIGS. 5 and 6, the door check 57 of the door 21 has a frame portion 58 that partitions the periphery of the doors 21 and 22 and is fixed as a part of the wall surface 41, and is fixed to the frame portion 58. One end of the base shaft 60 of the door check 57 is rotatably supported on the substrate 59. A first operating shaft 62 is rotatably supported as an operating shaft 61 at the other end of the base shaft 60, and a support shaft 63 is connected to the other end of the first operating shaft 62 in a substantially vertical manner to drive the drive case 65 of the door check 57. Has entered. A second operating shaft 64 is rotatably supported at the other end of the support shaft 63, and a rack 66 is formed in the longitudinal direction thereof.
A pinion 52 is fixed to an output shaft 51 provided on the drive motor M fixed to the door 21, and a rack 66 of the second operating shaft 64 is engaged with the pinion 52. The power generated by the generator 40 is supplied to the drive motor M via the wiring 42 to the drive motor M.

Since the door opening assist device 56 according to the present embodiment has the above-described configuration, when the pressure in the room 5 becomes a high pressure exceeding the atmospheric pressure by ejecting the fire extinguishing gas from the nozzle 12, the doors 21 and 22 are gas pressures. Will be transformed.
On the other hand, when the inside of the room 5 becomes high pressure, the fan 38 of the pressure avoidance port 37 rotates and the generator 40 generates power by the rotation of the rotating shaft 39. The electric power generated by the generator 40 is fed to the drive motor M in the drive case 65 to drive the drive motor M. Then, in FIG. 6, the pinion 52 rotates counterclockwise and a load is applied in the direction of pulling the rack 66 of the second operating shaft 64.
Therefore, when the lever handle 33 or the knob is rotated, the door 21 overcomes the engagement between the latch 31 and the strike 32 by the reaction force of the force pulling the second operating shaft 64 of the door check 57 by the driving motor M to be driven. It is forcibly opened around the hinge 23.

As described above, according to the door opening assist device 56 according to the second embodiment, even if the interior of the room becomes higher than atmospheric pressure by the fire extinguishing gas, the doors 21 and 22 are deformed, and the latch 31 is engaged with the strike 32. The door 21 can be opened directly and forcibly by rotating the lever handle 33 or the knob and driving the electric power generated by the generator 40 by the driving force generated by the engagement of the pinion 52 by the driving motor M and the rack 66 of the operating shaft 61. .
In particular, the fan 38 is rotated by the gas flow caused by the pressure difference between the inside and outside of the room 5 to generate power by the generator 40. Therefore, the high-pressure gas in the room 5 is effectively used to generate power without providing a separate power source. The door 21 can be forcibly opened.

In each of the above-described embodiments, the door opening assist devices 36 and 56 of the fire door 20 employed in the room 5 in which a large computer or the like is disposed have been described, but the door opening assist devices 36 and 56 according to the present invention are such facilities. It is needless to say that the present invention is not limited to the third room 5 and can be applied to doors of other appropriate facilities and rooms. For example, the door opening assist devices 36 and 56 of the door 21 according to the present invention may be employed in a clean room or the like provided with semiconductor manufacturing equipment or other equipment in a facility that dislikes dust as the equipment 2.
Moreover, in each embodiment mentioned above, although the pressure avoidance opening | mouth 37, the fan 38, and the generator 40 were provided in the door 21, it is not limited to this structure, You may provide in the wall surface near the door 21. Needless to say.

The present invention also relates to the opening assist devices 36 and 56 of the fire door 20, and the mounting positions of the assist devices 36 and 56 and various mechanisms around the fittings such as the doors 21 and 22 are described in the above embodiments. It is not limited and can be changed as appropriate. Needless to say, the present invention can be employed in a door opening assist device having an arbitrary configuration.
Needless to say, the present invention is not limited to the fire door 20 and can be applied to doors that are not fire doors. One of the base shafts 46 and 60 of the operating shafts 47 and 61 and the drive motor M may be provided on the door and the other provided on the wall surface. Further, the pressure avoidance port 37 and the fan 38 provided with the generator 40 may be provided on either the door or the wall surface.

5 rooms
20 Fire doors 21 and 22 Door 27 Latch lock 31 Latch 32 Strike 34 and 57 Door check 36 and 56 Door opening assist device 37 Pressure relief port 38 Fan 40 Generator 45 Door opening assist mechanism 47 and 61 Actuation shaft 64 Second operation shaft 50, 66 Rack 52 Pinion 54 Battery M Drive motor

Claims (6)

In the door opening assist device for the locked door in the closed state,
A generator that is provided at a pressure avoidance opening formed on the door or the wall surface and generates power with a pressure difference between inside and outside;
Drive means driven by the power generated by the generator;
A door opening assist mechanism for applying a force in the door opening direction to the door based on the driving force of the driving means;
When the pressure inside the room exceeds the atmospheric pressure, the generator generates electric power due to the pressure difference between the inside and outside of the room, and the door opening assist mechanism is operated by the driving means to assist the door opening operation. A door opening assist device. In the door opening assist device for the locked door in the closed state,
A fan provided in a pressure avoidance opening formed in the door or the wall surface;
A generator for generating power by the rotational force of the fan;
A drive motor electrically connected to the generator and driven by the generated power;
A door opening assist mechanism for applying a force in the door opening direction to the door based on the driving force of the driving motor;
When the pressure inside the room exceeds the atmospheric pressure, the fan rotates due to the pressure difference between the inside and outside of the room, and the power is generated by the generator and transmitted to the drive motor to assist the door opening operation by the door opening assist mechanism. A door opening assist device characterized by that. A battery for storing electric power is connected in parallel to the drive motor, and when the electric lock or latch lock provided on the door is opened, the electric power stored in the battery is discharged to the drive motor. The door opening assist device according to claim 2. The door opening assist mechanism is configured such that an operating shaft rotatably provided on a base shaft provided on the wall surface or the door, a rack provided on the operating shaft, and a rotational force of the drive motor provided on the door or the wall surface are A pinion that transmits to the rack and applies a tensile force to the operating shaft;
The door opening assist device according to claim 2 or 3, wherein a force in an opening direction of the door is applied by relatively pulling the operating shaft by the rotational force of the drive motor. The door opening assist mechanism operates by transmitting a door check for adjusting a closing speed of the door, a rack provided on an operation shaft of the door check, and a rotational force of the drive motor provided on the door to the rack. A pinion that applies tensile force to the shaft,
The door opening assist device according to claim 2 or 3, wherein a force in an opening direction of the door is applied by relatively pulling an operation shaft of the door check by a rotational force of the drive motor. 6. A latch capable of moving forward and backward is provided at one of the joints between the doors or the joint between the door and the wall surface, and a strike is provided on the other for engaging the latch. The door opening assist device described in any one of the above.

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