JP2859819B2 - Operation box for opening and closing the smoke exhaust port - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the opening and closing of a smoke outlet installed on a ceiling inner wall or an outer wall of a building.
The present invention relates to a smoke outlet opening / closing operation box for manually issuing the drive instruction.

[0002]

2. Description of the Related Art Smoke generated due to the occurrence of a fire must be discharged quickly from a room or the like in a building. If the smoke is filled in the building, it will not only hinder people's evacuation behavior but also cause death. It will also be. Therefore, in buildings such as buildings,
Provide a smoke exhaust port on the outer wall surface to release smoke indoors, corridors, etc. to the outside by natural ventilation, or provide a smoke exhaust port on the ceiling etc., and install a smoke exhaust duct so that this smoke exhaust port communicates with the outer wall. Smoke exhaust equipment is installed that lays down, smokes indoors, corridors, etc. into the smoke exhaust duct by the negative pressure of the smoke exhauster (composed of a fan and a motor) installed in this duct, and discharges it outside. .

[0003] The door of the smoke exhaust port is usually closed, and only in an emergency, the door is opened so that the smoke exhaust duct opens to the outside air. In this operation, when it is necessary to open and close the smoke exhaust door due to the occurrence of a fire, the administrator (operator) operates the switch of the dedicated operation box installed in the control room (machine room), etc. Done. In such a smoke exhaust system, a device that electrically opens and closes the door of the smoke exhaust port has already been approved for disaster prevention, and is commercially available.

FIG. 6 is a side view (partially sectional view) showing the structure of a conventional smoke outlet opening / closing operation box. FIG. 7 is a front view of the operation box of FIG.

A panel 2 is attached to the surface of a box 1 made of metal and made in a box shape. The panel 2 is equipped with a red lamp 3 indicating an operating state, a green lamp 4 indicating an energizing state, and a push button switch 5 operated in the event of a fire. Also, below the green lamp 4,
The notice "Press the button in case of fire" is printed (or stamped). The push button switch 5 is provided around the push button switch 5 in order to prevent careless operation.
As shown in FIG. 2, 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 broken when the push button switch is operated.

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

In such an operation box, when a fire occurs, the knob 6 of the push button switch 5 is pressed with a fingertip, and an operation switch (not shown) attached to the push button switch 5 is turned on. With 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 exhaust device in the smoke exhaust duct is driven to rotate, and the smoke in the room or the like is sucked into the smoke exhaust duct and discharged to the atmosphere from an exhaust port on the outer wall.

[0008] When returning the smoke outlet opening / closing device,
Holding the knob 6, the push button switch 5 is pulled back, and the built-in return switch (not shown) is turned on. By this operation, the door of the smoke exhaust opening / closing device is closed, and the smoke exhaust duct is closed. Shutdown of the smoke evacuator is by a signal from the central monitoring panel or the smoke evacuator control panel.

[0009]

However, in the above-mentioned prior art, the operation box has two modes of a pushing operation and a pulling operation, and since the operation box is not usually operated, the operation box may not be operated. When a panic condition occurs, there is a risk that a wrong operation will be performed and smoke cannot be discharged.

An object of the present invention is to provide a smoke exhaust opening / closing operation box capable of preventing erroneous operation.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention operates an operation switch and a return switch for opening and closing a smoke outlet in conjunction with an operation of pushing and pulling back a push button switch. In the operation box for opening and closing the smoke outlet to be opened, a mechanism for locking the return of the push button switch once pushed in is provided.

In this case, the mechanism includes a concave portion or a projection provided on the shaft portion of the push button switch, an engaging member which engages with the concave portion or the projection, and a mechanism for manually moving the engaging member from outside. It can be configured to include an operation member.

[0013] The engagement member may be a cylinder or a member having an inclined surface.

Further, the operating member may be a lever movable vertically or horizontally.

[0015]

According to the above-mentioned means, in the smoke outlet opening / closing operation box which is not normally used and has two modes of pushing-in operation and pulling-back operation, in the event of a fire or the like, it is possible to perform either the pushing operation or the pulling-back operation. You may not be able to judge it. In such a case, it is desirable that the operation is not directed in a direction that degrades the current situation. Therefore, the present invention provides a mechanism that does not cause a failure in the mode to be operated first (push-in operation) and locks the pull-back switch of the push-button switch for closing the smoke exhaust port. Is provided. As a result, it is possible to prevent erroneous operations from being performed, prevent the spread of disasters, and achieve an effect in line with the purpose of establishing the Fire Service Law.

A mechanism for locking the push button switch is such that after the push button switch is pushed into a concave portion (or projection) provided in the shaft portion of the push button switch, the axial movement of the push button switch is restricted. The engaging member is engaged. In order to release the engagement between the engaging member and the concave portion (or the projection), it is sufficient to manually operate the operating member and move the engaging member away from the shaft of the push button switch. With such a configuration, it is possible to reliably lock the operation of the exhaust vent from opening to closing with a simple configuration,
Safety can be improved.

Although various structures of the engaging member are conceivable, 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, and as a result, costs can be reduced.

The operating member is a lever which can be moved up and down or left and right so that the operation of the engaging member can be performed with the minimum number of parts and the simplest transmission system. As a result, the operation member can be formed with a very simple configuration and a minimum number of parts, and 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 exhaust box opening / closing operation box according to the present invention. FIG. 2 is a side view showing the operation of the embodiment shown in FIG. 1 when the smoke outlet is closed. In FIGS. 1 and 2, a part of the housing and the like are shown in cross-sectional views.

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

The push button switch 13 comprises a knob 14 as an operating member, a shaft 15 connected to the rear surface of the knob 14, and a cylindrical guide 16 for guiding the movement of the shaft 15. The guide 16 is disposed between the support plate 12 and the inside of the rear surface of the housing 10, and an upper portion of the intermediate portion is provided with an opening through which the lower end of the cylinder 18 (engaging member) of the safety mechanism 17 can be inserted. ing. A recess 19 is formed in the upper portion of the shaft 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 fitted inside the guide member 20 and acting as an urging force for pressing the cylinder 18, and a cylinder 18. For L
Each of the slide levers 22 has a length that is integrally processed so as to form a letter shape and that has a distal end 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 hinder the elevation of the slide lever 22. 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 configuration will be described. First, in the normal state, the state is as shown in FIG. 2, the knob 14 is located at a position short of 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.
3 is continued until it is operated.

In the event of a fire, the knob 14 is pushed by a fingertip by a manager, a pedestrian, a person in the room, etc. to open the smoke outlet. In the course of the movement of the shaft portion 15 associated with this operation, the portion A, which has been in contact with the lower end surface of the cylinder 18, moves from the position facing 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 fits into the recess 19.
Further, an operation switch (not shown) built in the push button switch 13 is turned on, the door of the smoke exhaust port is opened, and the 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 is finally discharged to the atmosphere from the exhaust port of the outer wall.

Next, when the smoke is no longer required due to the end of the fire extinguishing work, the push button switch 13 is pulled back. In this state, the push mechanism is locked by the safety mechanism 17 and only the pull back operation of the push button switch 13 is performed. Then, the push button switch 13 cannot be returned. To release the safety mechanism 17, the slide lever 22 may be pushed upward. In this state, if the push button switch 13 is pulled back, the state shown in FIG.
8 is placed on the A portion of the shaft portion 15), and in that process, the return switch (not shown) is turned on, and the door of the smoke outlet is closed using the motor (not shown) as a drive source. , Is returned to the normal state.

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

The push button switch 13 includes an operation switch 13a and a return switch 13b. The operation switch 13a is a normally open contact circuit and a return switch 1
Reference numeral 3b has a two-circuit configuration including a normally closed contact and a normally open contact. The operation box includes connection terminals P1, C, L, and P2 and a power supply terminal 23 to which a DC power supply is connected. These terminals include a solenoid SOL, a motor M, and a smoke exhaust opening / closing device including a limit switch Ls. 24 are connected.

One end of the red lamp 3, the green lamp 4, the operation switch 13a and one end of the return switch 13b are commonly connected, and are connected to the plus terminal of the power supply terminal 23.
Further, the other end of the operation switch 13a is a P1 terminal, the other end of the green lamp 4 is a C terminal, the other end of the red lamp 3 is an L terminal,
The other end of the normally open contact of the return switch 13b is connected to the P2 terminal. In the smoke outlet 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 minus terminal of the power supply terminal 23, and the L terminal has a normally open contact of the limit switch Ls and a motor. The other end of the motor M is connected to one end of the M and the P2 terminal. The other end of the solenoid SOL is connected to a normally closed contact of the limit switch Ls.

In such a configuration, when the push button switch 13 is pressed to open the door of the smoke exhaust port and the state shown in FIG. 1 is established, the operation switch 13a is turned on. As a result, the solenoid SOL is excited, and the armature is actuated to release the mechanical lock on the smoke outlet door, and the smoke outlet door is opened. In the process of opening the door, the limit switch Ls is switched, and the green lamp 4 and the red lamp 3 are turned on, so that the operator of the operation box can confirm the operation.

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

[Embodiment 2] FIG. 4 is a side view (when the smoke exhaust port is opened) showing another embodiment of the smoke exhaust port opening / closing operation box according to the present invention. FIG. 5 is a side view showing the operation of the embodiment of FIG. 4 when closing the smoke outlet. 4 and 5, the same members or those having the same functions as those in FIGS. 1 and 2 are denoted by the same reference numerals, and therefore, duplicate description is omitted in this embodiment. Further, a part of the housing and the like is shown in a cross-sectional view. Further, also in this embodiment, the red lamp 3, the green lamp 4, and the cover 31 are provided, but are not shown in FIGS. 4 and 5.

In contrast to the above embodiment in which the shaft portion 15 is provided with a concave portion, in the present embodiment, a leaf spring 25 (engaging member) bent near the end of the shaft portion 15 in a V-shape. Is provided. Further, a safety mechanism 26 having a lever structure is provided instead of the safety mechanism 17. The safety mechanism 26 corresponds to the slide lever 22, and is disposed in a horizontal state and rotates vertically about a fulcrum 27 (an operating member), and an end of the unlock lever 28. An engaging lever 29 is rotatably connected to the portion so as to form an L-shape. An engagement piece 29a as a member having an inclined surface is provided at a tip end (lower end) of the engagement lever 29, and an opening 30 is formed in an upper part of the guide 16 so that the engagement 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 unlocking lever 28 is in a horizontal state as shown in FIG. 5, the push button switch 13 is pulled back, the engaging piece 29a is inserted into the opening 30, and the leaf spring 25 is tilted. The engagement piece 29a is placed on the surface.

In this state, when the push button switch 13 is pressed 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 is pushed. As it moves up, the unlocking lever 28 rotates counterclockwise about the fulcrum 27. In the course of this series of movements, the top of the leaf spring 25 passes over the inclined surface of the engagement piece 29a, and the side of the engagement lever 29 and the leaf spring 25
Is positioned so as to face the vertical plane. This state is shown in FIG.
At this time, the operation switch 13a shown in FIG.
Is turned on, and the smoke exhaust door is opened as described above.

On the other hand, the push button switch 13 must be pulled back to close the smoke exhaust door, but is pulled back because the engaging piece 29a is located in front of the leaf spring 25 as shown in FIG. Can not do. Then, when the lock release lever 28 is pressed down with a finger as shown in FIG.
Since the engagement piece 29a comes out of the opening 30 and the obstacle facing the leaf spring 25 is eliminated, the push button switch 1
3 can be pulled back. This push button switch 1
3, the return switch 13b shown in FIG. 3 is activated, and the motor M is energized.
The exhaust door is closed.

In each of the above embodiments, the lock release lever of the safety mechanism is moved up and down. However, a combination of a rack and a worm gear, a combination of a rotary shaft and a semicircular cam, or a key is used. Locking or the like may be used.

In the embodiment shown in FIG. 1, the shaft portion 15 is provided with a concave portion. On the contrary, the shaft portion 15 is provided with a projection having an 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 shaft portion 15 is provided with the leaf spring 25 as a projection. However, a configuration in which a V-shaped inclined recess is provided in the shaft portion 15 may be employed.

[0040]

As described above, the present invention relates to a smoke exhaust port opening / closing operation box for operating an operation switch for opening / closing a smoke exhaust port and a return switch in conjunction with an operation of pushing and pulling back a 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 from being performed when opening and closing the smoke exhaust port, and to prevent the spread of disaster. Become.

[Brief description of the drawings]

FIG. 1 is a side view showing one 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 shown in FIG. 1 when the smoke outlet is closed.

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

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

FIG. 5 is a side view showing the operation of the embodiment of FIG. 4 when the smoke outlet is closed.

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

FIG. 7 is a front view of the operation box in FIG. 6;

[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)

(57) [Claims] 1. An exhaust box opening / closing operation box for operating an operation switch for opening and closing a smoke outlet and a return switch in conjunction with an operation of pushing and pulling back a push button switch, wherein the push button once pushed in An operation box for opening and closing a smoke exhaust port, wherein a mechanism for locking return of a switch is provided. 2. The mechanism according to claim 1, wherein 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 outside. The operation box for opening and closing a smoke exhaust port according to claim 1, comprising an operation member. 3. The operation box according to claim 2, wherein the engagement member is a cylinder or a member having an inclined surface. 4. The operation box for opening and closing a smoke exhaust port according to claim 2, wherein the operation member is a lever movable in a vertical or horizontal direction.