JPH0887927A - Operating box for opening/closing smoke exhaust port - Google Patents

Abstract

PURPOSE: To prevent erroneous operation of a box, in the operating box for opening/closing a smoke exhaust port. CONSTITUTION: Associated with operation of pressing in/drawing back a push button switch 13, an actuating/resetting switch for opening/closing smoke exhaust port is actuated. Associated with press-in operation of the push button switch 13, by engaging a cylinder 18 with a shaft part 15, moving the shaft part 15 is regulated, and on the other hand when drawn back the push button switch 13, by operating a slide lever 22 exposed from a surface of a panel 11, the cylinder 18 is pulled to separate from the shaft part 15, so as to unlock a lock condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to opening and closing a smoke exhaust door installed on an inner wall surface or an outer wall surface of a ceiling in a building.
The present invention relates to an operation box for opening and closing a smoke exhaust port for manually issuing the drive instruction.

[0002]

2. Description of the Related Art Smoke generated by a fire must be quickly discharged from the inside of the building, etc., and the building is filled with smoke, which not only hinders people's evacuation behavior, but also causes death. It will also happen. Therefore, in buildings such as buildings,
A smoke exhaust port is provided on the outer wall to discharge smoke indoors, in the corridor, etc. to the outdoors by natural ventilation, or a smoke exhaust port is provided on the ceiling, etc., and a smoke exhaust duct is connected so that this smoke outlet and the outer wall part communicate with each other. There is a smoke exhaust facility that is installed and sucks smoke from indoors, corridors, etc. into the smoke exhaust duct by the negative pressure of the smoke exhauster (composed of a fan and motor) installed in this duct, and discharges it to the outside. .

The smoke exhaust door is normally closed, and the door is opened so that the smoke exhaust duct is opened to the outside air only in an emergency. This operation requires the administrator (operator) to operate the switch on the dedicated operation box installed in the control room (machine room) etc. when it is necessary to open and close the smoke exhaust door due to a fire. Is done. In such a smoke exhaust facility, a device that electrically opens and closes the door of the smoke exhaust port has already been certified for disaster prevention and is in the market.

FIG. 6 is a side view (partially sectional view) showing the structure of a conventional operation box for opening and closing a smoke exhaust port. 7 is a front view of the operation box of FIG.

A panel 2 is attached to the surface of a housing 1 made of metal and having a box shape. The panel 2 is provided with a red lamp 3 showing an operating state, a green lamp 4 showing an energized state, and a push button switch 5 operated when a fire occurs. Also, below the green lamp 4,
The note "Press the button in case of fire" is printed (or stamped). In order to prevent the push button switch 5 from being inadvertently operated, the push button switch 5 is surrounded by a switch shown in
As shown in FIG. 3, a depression is formed so that the switch head is not exposed from the surface of the panel 2, and the surface is covered with a cover 31 made of plastic or the like. The cover 31 can be easily destroyed when the push button switch is operated.

As shown in FIG. 6, the push button switch 5 has a knob 6, a shaft portion 7 having an end portion fitted into the knob 6 (or made integrally with the knob 6), and a guide portion for the shaft portion 7. The guide member 8 and the supporting member 9 for fixing both ends of the guide member 8 are provided. In addition, W is an inner wall (or interior material) of a room, a corridor, or the like.

In such an operation box, when a fire occurs, the knob 6 of the push button switch 5 is pushed with a fingertip to turn on an operation switch (not shown) attached to the push button switch 5. By this operation, the door of the smoke exhaust opening / closing device opens, and the smoke exhaust duct communicates with the outside air. at the same time,
The smoke evacuator in the smoke exhaust duct is rotationally driven, and the smoke in the room or the like is sucked into the smoke exhaust duct and discharged to the atmosphere through the exhaust port on the outer wall.

Further, when returning the smoke exhaust opening / closing device,
Hold the knob 6 and pull back the push button switch 5 to turn on a built-in return switch (not shown). By this operation, the door of the smoke exhaust opening / closing device is closed and the smoke exhaust duct is closed. The stop of the smoke evacuator is based on a signal from the central monitoring panel or smoke evacuator control panel.

[0009]

However, in the above-mentioned conventional technique, the operation box has two modes of pushing operation and pulling operation, and the operation box is usually not operated, so that a fire may occur. If you fall into a panic condition, you may make a mistake and do not smoke.

An object of the present invention is to provide an operation box for opening and closing a smoke exhaust port which can prevent erroneous operation.

[0011]

In order to achieve the above-mentioned object, the present invention operates an operation switch and a return switch for opening and closing a smoke exhaust port in conjunction with an operation of pushing and pulling back a push button switch. The operation box for opening / closing the smoke exhaust port is provided with a mechanism for locking the return of the push button switch once pushed.

The mechanism in this case includes a recess or projection provided on the shaft portion of the push button switch, an engaging member that engages with the recess or projection, and a mechanism for manually moving the engaging member from the outside. A configuration including an operating member may be used.

The engaging member may be a cylinder or a member having an inclined surface.

Further, the operating member may be a lever which can be moved vertically or horizontally.

[0015]

According to the above-mentioned means, in the smoke exhaust opening / closing operation box which is not normally used and has two modes of pushing operation and pulling back operation, it is necessary to use either the pushing operation or the pulling back operation in an emergency such as a fire. You may not be able to judge. In such a case, it is desirable that the operation does not go in a direction that worsens the current situation. Therefore, the present invention does not cause any trouble in the mode (push-in operation) that should be operated first, and locks the pull-out operation of the push-button switch for closing the smoke exhaust port. Is provided. As a result, it is possible to prevent an erroneous operation from being performed, prevent a disaster from spreading, and obtain an effect in line with the purpose of establishing the Fire Defense Law.

As a mechanism for locking the push button switch, the axial movement of the push button switch is restricted after the push button switch is pushed into the recess (or projection) provided in the shaft portion of the push button switch. The engaging member engages. To release the engagement between the engaging member and the recess (or the protrusion), the operating member may be manually operated to move the engaging member away from the shaft portion of the push button switch. With such a configuration, it is possible to securely lock the smoke exhaust opening and closing operation with a simple configuration.
The safety can be improved.

Although various structures of the engaging member can be considered, the simplest configuration is recommended to be a rod-like member such as a cylinder or a member having an inclined surface such as a hook-like member. As a result, the lock mechanism can be configured with an extremely simple configuration, which results in cost reduction.

The operating member is a lever which can be moved vertically or horizontally so that the engaging member can be operated with the minimum number of parts and the simplest transmission system. As a result, the operating member can be formed with an extremely simple structure and a minimum number of parts, and thus the safety mechanism can be simplified and the cost can be reduced.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

[Embodiment 1] FIG. 1 is a side view (when a smoke outlet is opened) showing an embodiment of an operation box for opening and closing a smoke outlet according to the present invention. FIG. 2 is a side view showing the operation of the embodiment of FIG. 1 when closing the smoke exhaust port. In addition, in FIG. 1 and FIG. 2, a part of the housing or the like is shown in a sectional view.

A panel 11 having a recess formed in the center is attached to the surface of a casing 1 made by processing metal, plastic, or the like into a box shape. A flat plate-shaped support plate 12 is provided on the back surface of the panel 11, and a push button switch 13 is provided so as to be fitted into the recess of the panel 11. Further, although not shown here, the red lamp and the green lamp shown in FIG. 7 and the cover 31 made of plastic or the like are arranged at the same position on the upper portion of the panel 2 and shown in FIG. The notes are also printed.

The push button switch 13 comprises a knob 14 as an operating member, a shaft portion 15 connected to the rear surface of the knob 14, and a tubular guide 16 for guiding the movement of the shaft portion 15. The guide 16 is disposed between the support plate 12 and the inside of the rear surface of the housing 10, and an opening into which the lower end of the cylinder 18 (engaging member) of the safety mechanism 17 can be inserted is provided in the upper portion of the intermediate portion. ing. A recess 19 is formed in the upper portion of the shaft portion 15 so that the lower end of the cylinder 18 that has passed through the opening can be engaged.

The safety mechanism 17 includes, in addition to the cylinder 18, a cylindrical guide member 20 for guiding the cylinder 18, a spring 21 which is fitted into an upper portion of the guide member 20 and serves as a biasing force for pushing down the cylinder 18, and the cylinder 18. Against L
Each of the slide levers 22 is integrally processed so as to form a letter shape and has a length such that the tip end portion is exposed from the surface of the panel 11.

The side wall of the guide member 20 and the panel 11 are provided with slits (not shown) in the vertical direction so as not to prevent the slide lever 22 from moving up and down. Further, the upper end of the guide member 20 is fixed to the ceiling surface of the housing 10 by screwing or the like.

Next, the operation of the embodiment having the above construction will be described. First, in a normal state, the state is as shown in FIG. 2, the knob 14 is located at the front position in the movable range, and the lower end surface of the cylinder 18 is in contact with the portion A of the push button switch 13. This state is push button switch 1
It continues until 3 is operated.

When a fire occurs, the knob 14 is pushed with a fingertip by a manager, a passerby, a person in the room, etc. to open the smoke exhaust port. In the movement process of the shaft portion 15 associated with this operation, the portion A, which was in contact with the lower end surface of the cylinder 18 until then, moves from the facing position of the cylinder 18, and as shown in FIG. The recess 19 of the part 15 is located.
At this point, the lower end of the cylinder 18 is fitted into the recess 19.
Further, an operation switch (not shown) incorporated in the push button switch 13 is turned on, the door of the smoke exhaust port is opened, and a smoke exhaust device (not shown) starts operating. As a result, the smoke exhaust duct communicates with the outside air and a negative pressure is generated in the smoke exhaust duct, so that the smoke in the room or the like is sucked into the smoke exhaust duct and finally discharged to the atmosphere from the exhaust port of the outer wall.

Next, when smoke emission becomes unnecessary due to the end of fire extinguishing work or the like, the push button switch 13 is pulled back. In this state, the push button switch 13 is locked and only the push button switch 13 is pulled back. Then, the push button switch 13 cannot be returned. In order to release the safety mechanism 17, the slide lever 22 may be pushed upward. If the push button switch 13 is pulled back in this state, the state of FIG.
The lower end of 8 is placed on the portion A of the shaft portion 15), the return switch (not shown) is turned on in the process, and the smoke exhaust door is closed by a motor (not shown) as a drive source. , Return to normal state.

FIG. 3 is a circuit diagram showing the connection relationship between the push button switch and the lamp and the related members.

The push button switch 13 is provided with an operating switch 13a and a returning switch 13b. The operating switch 13a is one circuit of normally open contact, the returning switch 1
3b has a two-circuit configuration of a normally closed contact and a normally open contact. The operation box includes power terminals 23 to which connection terminals P1, C, L, P2 and a DC power source are connected, and these terminals include a solenoid SOL, a motor M, and a limit switch Ls. 24 is connected.

One ends of the red lamp 3, the green lamp 4, the operation switch 13a and the return switch 13b are commonly connected and connected to the plus terminal of the power supply terminal 23.
Further, the other end of the operation switch 13a is the P1 terminal, the other end of the green lamp 4 is the C terminal, the other end of the red lamp 3 is the L terminal,
The other end of the normally open contact of the return switch 13b is connected to the P2 terminal. In the smoke exhaust opening / closing device 24, the P1 terminal has one end of the solenoid SOL, the C terminal has a common terminal of the limit switch Ls and the negative terminal of the power supply terminal 23, and the L terminal has a normally open contact of the limit switch Ls and a motor. One end of M and the other end of the motor M are connected to the P2 terminal, respectively. The other end of the solenoid SOL is connected to the normally closed contact of the limit switch Ls.

In such a structure, when the push button switch 13 is pushed to open the smoke exhaust door and brought into the state of FIG. 1, the operation switch 13a is turned on. As a result, the solenoid SOL is excited, the armature is actuated, and the mechanical lock state of the smoke exhaust door is released, and the smoke exhaust door is opened. The limit switch Ls is switched in the process of opening the door, and the red lamp 3 is turned on in addition to the green lamp 4, so that the operator of the operation box can confirm the operation.

On the other hand, when it is desired to close the smoke exhaust door, the push button switch 13 is pulled back while pushing up the slide lever 22 as described above. As a result, the return switch 13b is actuated, the green lamp 4 is turned off, the motor M is energized, and the smoke exhaust door is moved in the closing direction. When the door is in the closed state, the limit switch Ls is switched to the normally closed contact in association with the closed state, the energization of the motor M is stopped, the green lamp 4 is turned on, and the initial state is restored.

[Embodiment 2] FIG. 4 is a side view (when the smoke outlet is open) showing another embodiment of the operation box for opening and closing the smoke outlet according to the present invention. 5 is a side view showing the operation of the embodiment of FIG. 4 when closing the smoke exhaust port. Note that, in FIGS. 4 and 5, the same reference numerals are used for the same members or the same functions as those in FIGS. 1 and 2, and therefore, redundant description will be omitted in the present embodiment. Further, a part of the housing and the like is shown in a sectional view. Further, although the red lamp 3, the green lamp 4 and the cover 31 are provided also in this embodiment, they are omitted in FIGS. 4 and 5.

In the present embodiment, the shaft portion 15 is provided with a recess, whereas in the present embodiment, a leaf spring 25 (engaging member) is bent in the V-shape in the vicinity of the end portion of the shaft portion 15. Is provided. Further, instead of the safety mechanism 17, a safety mechanism 26 having a lever structure is provided. The safety mechanism 26 corresponds to the slide lever 22, is disposed in a horizontal state, and rotates in a vertical direction around a fulcrum 27 as a lock release lever 28 (operation member) and an end of the lock release lever 28. It is composed of an engaging lever 29 rotatably connected to the portion so as to form an L shape. An engaging piece 29a as a member having an inclined surface is provided at the tip (lower end) of the engaging lever 29, and an opening 30 is formed in the upper portion of the guide 16 so that the engaging piece 29a can be fitted into the guide 16. Are formed.

Next, the operation of the second embodiment will be described. In the normal state, the lock release lever 28 is in the horizontal state in FIG. 5, the push button switch 13 is pulled back, the engagement piece 29a is inserted into the opening 30, and the leaf spring 25 is inclined. The engagement piece 29a is placed on the surface.

From this state, when the push button switch 13 is pushed in to open the door of the smoke exhaust port, the inclined surface of the leaf spring 25 forcibly pushes up the engaging piece 29a in the process, and the engaging lever 29 moves. As it rises, the lock release lever 28 rotates counterclockwise about the fulcrum 27. In the course of this series of movements, the top of the leaf spring 25 crosses over the inclined surface of the engagement piece 29a, and the side surface of the engagement lever 29 and the leaf spring 25.
The vertical surface of the is in a position to face. This state is shown in Figure 4.
At this time, the operating switch 13a shown in FIG.
Is turned on and the smoke outlet door is opened as described above.

On the other hand, the push button switch 13 must be pulled back in order to close the smoke outlet door, but as shown in FIG. 4, it is pulled back because the engaging piece 29a is located in front of the leaf spring 25. I can't. Therefore, if the lock release lever 28 is pushed down with a finger as shown in FIG. 5,
Since the engaging piece 29a slips out of the opening 30 and there is no obstacle on the facing surface of the leaf spring 25, the push button switch 1
You can pull back 3. This push button switch 1
3 is pulled back, the return switch 13b shown in FIG. 3 is actuated, and the motor M is energized.
The smoke exit door is closed.

In each of the above embodiments, the lock release lever of the safety mechanism is moved in the vertical direction, but a combination of a rack and a worm gear, a combination of a rotary shaft and a semicircular cam, or a key is used. It may be locked or the like.

Further, in the embodiment shown in FIG. 1, the shaft portion 15 is provided with the concave portion, but conversely, the shaft portion 15 is provided with the projection having the inclined surface, and the vertical surface thereof is engaged with the side surface of the cylinder 18. . Similarly, in the embodiment of FIG. 4, the leaf spring 25 as a protrusion is provided on the shaft portion 15, but a recess having a V-shaped inclination may be provided on the shaft portion 15.

[0040]

As described above, according to the present invention, the smoke outlet opening / closing operation box which operates the operation switch for opening / closing the smoke outlet and the return switch in conjunction with the operation of pushing and pulling back the push button switch. In the above, since a mechanism for locking the return of the push button switch once pushed is provided, it is possible to prevent an erroneous operation when opening and closing the smoke exhaust port and prevent the spread of disaster. Become.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an operation box for opening and closing a smoke exhaust port according to the present invention.

FIG. 2 is a side view showing the operation of the embodiment of FIG. 1 when closing the smoke exhaust port.

FIG. 3 is a circuit diagram showing a connection between a push button switch, a lamp and its related members.

FIG. 4 is a side view showing another embodiment of an operation box for opening and closing a smoke exhaust port according to the present invention.

FIG. 5 is a side view showing the operation of the embodiment of FIG. 4 when closing the smoke exhaust port.

FIG. 6 is a side view showing a configuration of a conventional operation box for opening and closing a smoke exhaust port.

FIG. 7 is a front view of the operation box of FIG.

[Explanation of symbols]

 13 Push Button Switch 15 Shaft 17,26 Safety Mechanism 18 Cylinder 19 Recess 22 Slide Lever 25 Leaf Spring 28 Lock Release Lever 29 Engagement Lever 29a Engagement Piece

Claims (4)

[Claims] 1. A smoke outlet opening / closing operation box for operating an operation switch for opening / closing a smoke outlet and a return switch in synchronism with an operation of pushing in / pushing out a push button switch, wherein the push button once pushed. An operation box for opening and closing the smoke outlet, which is equipped with a mechanism that locks the return of the switch. 2. The mechanism includes a concave portion or a protrusion provided on a shaft portion of the push button switch, an engaging member that engages with the concave portion or the protrusion, and a mechanism for manually moving the engaging member from the outside. The operation box for opening and closing the smoke exhaust port according to claim 1, comprising an operation member. 3. The operation box for opening and closing a smoke exhaust port according to claim 2, wherein the engagement member is a cylinder or a member having an inclined surface. 4. The smoke exhaust opening / closing operation box according to claim 2, wherein the operation member is a lever that can be moved up and down or left and right.