JPH0611017Y2 - Smoke exit door opener - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention has a door that is normally closed, and can be used when a fire occurs.
The present invention relates to a smoke exhaust door opening / closing device that is opened by remote operation or manual operation.

[Conventional technology]

Large buildings such as recent buildings, factories or theaters are fully equipped with air-conditioning equipment, and ducts are arranged vertically and horizontally inside these buildings. At the same time, it is equipped with various equipment for disaster prevention. Among them, fire and smoke prevention equipment is one of the important equipment to prevent the spread of fire when a fire occurs.

On the other hand, many so-called new building materials are used in buildings in recent years, and when a fire occurs, a large amount of toxic smoke or gas is generated, and personal injury due to inhalation of this smoke or gas is increasing.

Therefore, naturally, a so-called smoke exhaust facility that quickly exhausts smoke or the like generated from the fire site in the initial state of the fire is also required.

This type of smoke exhaust equipment has a manual smoke exhaust equipment that opens the smoke exhaust door by moving the wire and an electric smoke exhaust equipment that uses a motor to open the smoke exhaust door by remote control. , And facilities that combine these. In the case of electric smoke exhaust equipment, the main mechanism is to wind the wire locked on the back of the smoke outlet door to close the door by an electric hoisting mechanism and a hook attached to the back of the door. A locking mechanism that holds the door in a closed state and an elastic mechanism that urges the door in the open state.

As a conventional winding mechanism for electric smoke exhaust equipment, a mechanism is generally used in which a pulley gear is rotated by rotation of a motor pinion and a wire rope whose one end is locked to the door is wound to close the door. .

As the locking mechanism, the door is locked with a latch at the same time when the wire rope is completely wound, and the motor pinion and the pulley gear are disengaged, or the door is latched at the same time when the wire rope is completely wound. There is a mechanism in which the motor is stopped while the motor pinion and the pulley gear are engaged with each other. In the case of a locking mechanism in which the motor pinion and the pulley gear do not mesh at the time of locking, the mechanism that releases this locked state is a mechanism that only releases the latch, and the motor pinion and the pulley gear mesh at the time of locking. In the case of the locking mechanism, the wire rope is pulled by releasing the latch, the rotational torque is transmitted to the pulley-pulley gear-motor pinion, and the non-energized motor is reversely rotated.

The elastic mechanism for urging the door in the open state is generally a mechanism in which a spring is attached to the smoke exhaust body.

[Problems to be solved by the device]

However, in the above conventional electric smoke exhaust facility,
The locking mechanism has the following problems.

In the case of a locking mechanism in which the motor pinion and the pulley gear do not mesh at the time of locking, the moment the door is locked by the latch,
Since this is a mechanism that reversely rotates the motor to mechanically disconnect the connection between the motor and the pulley, it has a complicated structure both mechanically and electrically. Further, it is necessary to continue energization for about 2 seconds from the moment the latch is engaged until the motor and the pulley are separated.

Also, in the case of a locking mechanism in which the motor pinion and the pulley gear mesh with each other when locking, the motor does not rotate in the reverse direction unless a strong force is applied in the direction to open the door. Need. Further, it is difficult to balance the torque of the spring and the winding torque, and malfunctions are likely to occur.

Therefore, the present invention locks the door, disconnects the motor from the pulley, and keeps the motor disconnected from the pulley while the smoke outlet is closed, so that the door can be opened instantly in the event of a fire. It is sometimes an object to provide a door opening / closing device that can be easily opened and closed manually.

[Means for Solving the Problem] In order to achieve the object, a smoke exhaust door opening and closing device is provided with a door pivotally supported by a smoke exhaust body and a rear surface of the door. An electric hoisting mechanism that winds up the locked wire to close the door, a locking mechanism that holds the door closed via a hook attached to the back of the door, and an urging force to open the door. In a smoke exhaust facility equipped with an elastic mechanism, a limit switch for switching between energization of a motor and an electromagnetic clutch in the winding mechanism and energization of a solenoid in the locking mechanism is provided, and the limit switch closes a door. The solenoid is energized when the door is opened, and the motor and the electromagnetic clutch are energized when the door is opened.

〔Example〕

Hereinafter, the features of the present invention will be specifically described with reference to the embodiments shown in the drawings.

FIG. 1 is a perspective view of a smoke exhaust facility equipped with a door opening / closing device of the present invention, and FIGS. 2 and 3 are schematic side views of the smoke exhaust facility. Here, FIGS. 1 and 3 show the door in the open state, and FIG. 2 shows the door in the closed state.

A door 2 is rotatably supported on both sides of the smoke exhaust main body 1, and when the door 2 is in a closed state, the door 2 is locked by a locking mechanism 3a of a door opening / closing device 3. When the door 2 is in the open state, the door 2 is biased in the opening direction by the spring 2a.

The door opening / closing device 3 of the present invention has a main part installed in a casing 7 fixed to the smoke exhaust body 1. The casing 7 is divided into frames 7a and 7b, a locking mechanism 3a is installed in the frame 7a, and a winding mechanism 3b is installed in the frame 7b.

A hook 4 for locking the door 2 to the locking mechanism 3a when the door is closed is attached to the back surface of the door 2. In the figure, 5 is a wire rope having one end locked to the hook 4 and the other end locked to the hoisting mechanism 3b, and 6 is installed so as not to give an impact to the casing 7 when the door 2 is closed. It is a shock absorber.

4 and 5 are plan views showing the locking mechanism 3a together with the frame body 7a, and FIGS. 6 and 7 are perspective views showing the winding mechanism 3b together with the frame body 7b. Here, FIGS. 4 and 6 are diagrams for explaining the operation of each part when the door 2 is locked in the closed state, and FIGS. 5 and 7 are each part when the door 2 is opened. 6 is a diagram for explaining the operation of FIG.

As shown in FIG. 4, the locking mechanism 3a is normally a latch in which a hook shaft 4a provided at the tip of a hook 4 attached to the back surface of the door 2 is rotatably attached to a frame body 7a. Board 8
The door 2 is closed by engaging with the notch 8a.

A notch portion 8b is formed on one end side of the latch plate 8, and the notch portion 8b is engaged with an engaging roller 9b of an engaging lever 9 which is rotatable by a shaft 9a.

The latch plate 8 is rotatably mounted in the frame 7a by a latch shaft 8c.
Is urged counterclockwise by a spring 8d fixed to the cutout portion 8a on one side and fixed to the frame body 7a on the other side.

On the other hand, the locking lever 9 is provided with a locking roller 9b on one side and a rectangular elongated hole 9c on the other side.

In addition, a pin provided on one side of the connecting plate 10 is provided in the long hole 9c.
10a is loosely fitted, and a plunger 12 connected to a solenoid 11 is connected to the other side of the connecting plate 10.

As shown in FIG. 6, the hoisting mechanism 3b is rotatably supported by the frame body 7b and has one end urged by the spring 14a in the direction of arrow A, the pulley 14, the electromagnetic clutch gear 15a and the electromagnetic clutch 15b. In addition, it is composed of a motor 21 connected in series via a motor gear 15c.

Further, the wire rope 5 is wound around the pulley 14, and one end side of the wire rope 5 is connected to the door 2.

In such a door opening / closing device 3, in this embodiment, the door 21 is locked and the motor 21 and the pulley 14 are disconnected at the same time, and the motor 21 and the pulley 14 are disconnected while the smoke exhaust port is closed. And, in the event of a fire, a mechanism that can instantly open the door 2 is provided.

In FIG. 4, 13 is turned on by the contact or separation of the stepped portion 8e of the latch plate 8 as the latch plate 8 rotates.
A limit switch for turning off, of which 13a is a changeover switch for switching between energization of the solenoid 11 and energization of the motor 21 and the electromagnetic clutch 15b, and 13b is a changeover switch for displaying the closed or open state of the door 2. .

When the door 2 is closed, as shown in FIG. 4, the stepped portion 8e of the latch plate 8 pushes in the hinges 13c and 13d. In this state, the motor 21 and the electromagnetic clutch 15b are not connected. Not energized. Therefore, the electromagnetic clutch 15b does not operate, and the wire rope 5 is wound around the pulley 14 by the spring 14a and is maintained so as not to loosen.

The operation status of the door opening / closing device of the present embodiment configured as described above is as follows.

In the normal state, as shown in FIGS. 2 and 4,
The door 2 is set in the closed state.

Next, when a fire or the like occurs in the building, the opening operation shown in FIGS. 5 and 7 is performed by an opening command from a separately provided interlocking control panel (not shown).

First, an actuation signal according to an opening command is applied to the solenoid 11, and along with this, the plunger 12 is attracted by the solenoid 11 in the direction of arrow B, and is provided on one side of the connecting plate 10 connected to the tip of the plunger 12. The locking lever 9 rotates in the direction of arrow C via the pin 10a. By this rotation,
The engagement state of the notch 8b is released by the engagement roller 9b, and the latch plate 8 that has been biased counterclockwise by the spring 8d in advance rotates in the direction of arrow D. Therefore, the hook 4 provided on the back surface of the door 2 comes off from the notch 8a of the latch plate 8,
The door 2 is opened by the force of the opening spring 2a attached between the door 2 and the smoke exhaust body 1.

Due to this series of operations, the limit switch 13
The stepped portion 8e of the latch plate 8 that abuts against the hinges 13c and 13d and pushes the hinges 13c and 13d away from the hinges 13c and 13d. At this point, the changeover switch 13a moves from the solenoid 11 side to the motor 2
1 and the electromagnetic clutch 15b side, and the changeover switch 13b switches from the display of the closed state of the door 2 to the display of the open state.

As described above, in the opening / closing device of this embodiment, when the door 2 is closed, the connection between the motor 21 and the pulley 14 is disconnected, and the solenoid 2 is used to open the door 2 in this state at the time of fire.
By sending an operation signal to 11, the locked state can be released instantly and the door 2 can be opened.

Next, when a command to close the door 2 is issued from the interlocking control panel, voltage is applied to the hoisting motor 21 and the electromagnetic clutch 15b, and at the same time, the motor 21 rotates and the pulley 14 rotates via the electromagnetic clutch 15b. Then, the wire rope 5 is wound up and the door 2 is closed. By this closing operation, the reverse operation of the opening operation described above is performed, and the hook 4 attached to the back surface of the door 2 pushes in the latch plate 8 and the latch plate 8 is pushed.
The notch portion 8a is fitted in and the closing operation is completed.

At the same time, the changeover switches 13a and 13b are also switched to the closed state.

Further, the door opening / closing device of this embodiment is provided with a mechanism for opening / closing the door by manual operation. This manual mechanism is, as shown in FIGS. 8 and 9, located on the lower side of the latch plate 8 and the locking lever 9 and has a rotor 17 connected to an external wire 16 and one end side of the rotor 17. It is composed of a wire operating lever 19 connected by a Dutch shaft 18 fixed to the frame 7a and a shift lever 20 rotatably installed by the same shaft 9a as the locking lever 9. shift lever
One end of 20 is in contact with the end of the locking lever 9.

When the door 2 is opened by a manual operation, the wire 16 is pulled from the outside to rotate the rotor 17 and the wire operating lever 19 in the direction of the arrow, and this rotation forms the end of the wire operating lever 19. The projected portion 19a abutted against the shift lever 20 and the shift lever 20 pivoting in the direction of the arrow causes the locking lever 9 to pivot in the direction of the arrow and the locking roller 9b of the latch plate 8 to rotate. Remove from the cutout 8a,
The door 2 is opened by the force of the spring 2a.

Further, in order to manually close the door 2, the door 2 is pushed together with the manual lever 3c provided in the locking mechanism 3a, the hook 4 attached to the back surface of the door 2 is pushed into the latch plate 8, and the latch plate 8 The notch 8a is fitted and the closing operation is completed. At this time, the electromagnetic clutch 15b is not operating and the pulley 14 can idle. Therefore, the wire rope 5 is wound around the pulley 14 by the spring 14a, and the wire rope 5 is maintained so as not to loosen.

In this way, since the door 2 can be easily opened and closed manually, it is easy to open and close the door 2 for inspection and the like.

[Effect of device]

As described above, in the smoke exhaust door opening / closing device of the present invention, the motor and electromagnetic clutch in the winding mechanism for closing the door are energized and the locking mechanism for locking the closed door is provided. A limit switch for switching the energization of the solenoid is provided, and the limit switch energizes the solenoid when the door is closed and energizes the motor and the electromagnetic clutch when the door is opened. By providing this limit switch, it is possible to disconnect the winding motor and the pulley simultaneously with closing and locking the door with a simple structure both mechanically and electrically. Also, since the hoisting motor and pulley are disconnected while the door is closed, a mechanism to manually release the locking mechanism can be provided to easily open and close the door manually, including when inspecting equipment. You can

[Brief description of drawings]

FIGS. 1 to 9 are views showing an embodiment of the present invention, FIG. 1 is a perspective view of a smoke exhaust facility equipped with a door opening / closing device of the present embodiment, and FIGS. FIG. 3 is a schematic side view of the smoke exhaust facility. 4 and 5 are plan views showing the locking mechanism together with the frame body, FIGS. 6 and 7 are perspective views showing the winding mechanism together with the frame body, and FIGS. 8 and 9 are manual operations. It is a figure for demonstrating opening of a door. 1: Main body of smoke outlet, 2: Door 2a: Spring, 3: Door opening / closing device 3a: Locking mechanism, 3b: Winding mechanism 4: Hook, 5: Wire rope 6: Shock absorber, 7: Casing 7a, 7b: Frame Body, 8: Latch plate 8a, 8b: Notch part, 8c: Latch shaft 8d: Spring, 8e: Step part 9: Locking lever, 9a: Shaft 9b: Locking roller, 9c: Long hole 10: Connecting plate, 11 : Solenoid 12: Plunger, 13: Limit switch 14: Pulley, 14a: Spring 15a: Electromagnetic clutch gear, 15b: Electromagnetic clutch 15c: Motor gear, 21: Motor

Claims (1)

[Scope of utility model registration request] 1. A door rotatably supported by a smoke outlet body,
An electric winding mechanism that winds a wire locked on the back of the door to close the door, a locking mechanism that holds the door closed via a hook attached to the back of the door, and an open state of the door In a smoke exhaust facility equipped with an elastic mechanism for urging in the direction of, a limit switch for switching between energization of a motor and an electromagnetic clutch in the winding mechanism and energization of a solenoid in the locking mechanism is provided. To
A smoke exhaust door opening / closing device, characterized in that the solenoid is energized when the door is closed, and the motor and the electromagnetic clutch are energized when the door is opened.