JP2003269050A - Normally closed smoke-insulating fire door apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a regularly closed smoke-insulating fire door apparatus having a speed control function. <P>SOLUTION: According to the regularly closed smoke-insulating fire door apparatus having the speed control function, a fire door has an inexpensive and simple structure by slantly arranging a slide rail for automatically closing the fire door, and providing a self-closing speed control device. The apparatus has an elastic smoke insulating material arranged on lateral edge portions of an opening beforehand. Further, the apparatus has the speed control function, i.e., a function of inhibiting smoke from flowing outside by pressing with a pressure the fire door to the opening by a pressing means in a totally closed state when the fire door is automatically closed to block the opening. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire door having a slide rail slantingly arranged to self-close a sliding door and equipped with a self-closing speed adjusting device. The present invention relates to a smoke-shielding speed-controlled self-closing fire door configured to prevent the outflow of air.

[0002]

2. Description of the Related Art Most of the normally open fire doors in recent years are automatically closed by remote control in conjunction with smoke detectors and fire alarms. Recent fires are suffocated by smoke rather than burnt by fire. Since the death rate tends to be high, fire doors have been required not only to prevent burning, but also to prevent smoke damage. In order to block smoke, it is necessary to take a measure to eliminate a gap with the opening when the sliding door is closed. As one of the methods, the applicant, who is the same person as the inventor of the present application, has filed a Japanese patent application No. 4-20457. Issue bulletin was provided.

There are not only normally open fire doors but also normally closed fire doors that are normally closed by people when they cannot pass through and are smoke-proof fire doors at that time. In the case of normally closed fire doors, a means for self-closing is required, and as the self-closing means, those using weights, bullets, pneumatic pressure, hydraulic pressure, electric power, etc. have long been used. At the same time, various methods have been devised for controlling the accelerating property of the sliding door at the time of self-closing, and the inventor of the present application also discloses JP-A-2000-130009.
In the publication, a door roller with a shock absorber is provided, and by using these prior arts, a new normally closed fire door having a smoke shielding function is attempted to be manufactured.

[0004]

If weights, bullets, pneumatic pressures, hydraulic pressures, electric motors, etc. are used as the self-closing means, there is a problem in that the cost becomes high accordingly, and there is a problem in JP-A-2000-130.
According to Japanese Patent Publication No. 009, all the door weight is applied to the door car itself, and in particular, the heavier the door, the greater the load on the door car and the deformation easily occurs. As a result, there is an inconvenience that it is stopped and does not close due to deformation, and that the shock absorber cannot be attached if the door roller is lost. The present invention is provided for the purpose of solving such inconveniences and manufacturing a normally-closed smoke-proof fire door having a simple structure and a low cost.

[0005]

The present invention has solved the inconvenience by using a slide rail having a structure in which a rail and a door roller are integrated, and further mounting a shock absorber as a speed control device by another means. That is to say, one is a suspension structure that forms a fire and smoke barrier structure with the door end side vertical frame, the opening upper frame, the opening 3 sides of the opening door end side vertical frame, and the fire door that the fire door abuts when fully closed. In a door type pulling fire door, a slide rail is laid so as to be inclined in the closing direction of the fire door, and the inner rail and the fire door of this slanted slide rail are connected with a swinging structure in a direction perpendicular to the traveling direction of the fire door. Connected by a tool, at least one of the tools has a height adjusting means, and the fire door is provided with a speed control means that operates only when the door is closed. A normally-closed smoke-shielding fire door device characterized by comprising press-fitting means for press-contacting, and one is a vertical frame on the door-end side of the opening 3 and an opening above which the fire door abuts when fully closed. Frame and opening Abutment on the door end side vertical frame or this opening 3 direction when fully closed A normally closed smoke-shielding fire door device, characterized in that an elastic smoke-shielding member is provided on either side of the fire-proof door portion to further improve the smoke-shielding property. An elastic smoke-shielding member is provided on the entire opening side of the lower door of the fire door so as to be in contact with the ground when the fire door is fully closed.
It is a normally-closed type smoke and fire door device characterized by being formed in a fire and smoke prevention structure.

Further, one is a normally closed smoke-shielding fire door device characterized in that the height adjusting means has a turnbuckle structure, and further one is just before the pressure contact means reaches the fully closed position of the fire door. A normally-closed smoke-shielding fire door device characterized in that it is configured by using a displacement tool and a rotating body so that the smoke-shielding member is pressed against the smoke-shielding member when fully closed by sliding and displacing the sliding door in a straight forward direction. , And the other is that the speed-regulating means that operates only when closed is composed of a wire rope and a speed-control unit, and the wire rope is stretched in parallel with the slide rail while the wire bracket side of the mounting bracket pulled out from the fire door side. A pulley having a groove on its circumferential surface is rotatably provided, and a rotary shaft of a centrifugal governor for generating a braking force is connected to an extension shaft of the pulley directly or through a speed increasing means, and further, this transmission One-way rotation means is used so that it can be driven to rotate only when closed.The wire rope is wound around the pulley and the self-closing power of the fire door is controlled by the wire rope winding conduction. It is a normally-closed smoke-shielding fire door device characterized by transmitting to a unit to control the speed, and one of the normally-closed smoke-shielding fire door devices is characterized in that the upper surface of the sliding door front side is provided with a forced retraction means toward the closing direction. It is a closed smoke and fire door device. The one-way rotating means in this can be constructed by using a one-way clutch bearing.

In the case of the present invention, a smoke shielding member is provided on the side of the opening of the lower frame of the fire door with a smoke shielding structure formed by the opening 3 side and the fire door, and a fire shield is provided by the periphery 4 of the opening. The former is supposed to form a smoke structure, but the former assumes that the bottom side of the fire door will just contact the floor to form a smoke-shielding structure when fully closed, and the latter will block smoke even if there is a small gap. It is assumed that the elasticity of the members will form a more reliable smoke shielding structure.

Further, the slidably arranged slide rails used in the present invention may be attached to the wall with the angle member inclined to the fire door closing direction even if the slide rail is inclined to the fire door closing direction while facing the front. The front surface of the slide rail may be attached to the angle member with the front surface facing the floor surface. Because the weight of the fire door is distributed to the number of bearing balls hanging on the supported inner rail by using the slide rail that integrates the rail and the door roller, it has been supported by the hanging door wheel until now. The bearing weight per bearing ball is considerably reduced compared to the concentrated load, and therefore the device itself can be expected to last longer. Also, in the former installation method, only the bearings on the lower side support, but in the latter case, the bearings on both sides support the latter, and the latter has the advantage that the weight supported by one ball of the bearing is further reduced. .

Further, when suspending the fire door on the inner rail, in the case of the mounting method in which the inner rail faces the floor surface rather than directly attaching the front and rear coupling tools to the inner rail, the inner rail is used as the coupling tool mounting member. Attach the angle member that spans the whole to the inner rail once,
It is more preferable to attach the connecting tool to the angle member, and in the case of the mounting method in which the inner rail faces the front, once attach the flat steel member that spans the entire inner rail as the connecting tool attachment member to the inner rail and then attach it to the flat steel member. It is more preferable to attach a connector.

One reason is that the weight of the door applies a load to the slide rail by suspending it with a connecting tool, but the thickness of the material of the inner rail and the outer rail forming the slide rail is smaller than that of an angle member or a flat steel member. There is a limit to how thick the thickness can be.Therefore, no matter how much machining is performed, if it is attached directly to the inner rail that is long in the longitudinal direction, bending will inevitably occur and the bearing near the coupler will easily be loaded. If the above angle member or flat steel member is used, there will be no deflection in the load direction, and since the entire bearing is evenly loaded, the life of the slide rail will be adversely affected. There is also a slanted rail with a fire door installed horizontally on the floor. In order to make it easier to press the fire door, it is preferable to use a swinging structure with two parallel shafts. For that purpose, it is preferable that the connecting bracket on the slide rail side can be horizontally mounted, but it is vertical by using the connecting tool mounting member. Since there is a width in the direction, there is an advantage that a swing structure with two parallel axes can be easily attached.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the drawings based on an embodiment. FIG. 1 is a front view showing a suspended state of a fire door when a front cover of the embodiment 1 is removed. 2 is a vertical sectional view of the slide rail mounting portion when the front cover of FIG. 1 is mounted, and FIG. 3 is a vertical sectional view of the slide rail mounting portion in the second embodiment, similar to FIG. The difference between the first embodiment and the second embodiment is only the slide rail mounting procedure.

FIG. 4 is a front view showing the hanging condition of the fire door when the front cover of the third embodiment is removed, and FIG. 5 shows the slide rail mounting portion when the front cover of FIG. 4 is mounted. 6 is a vertical sectional view of the slide rail mounting portion in the fourth embodiment, similar to FIG. 5, and the only difference between the third and fourth embodiments is the slide rail mounting procedure. Further, Example 1 and Example 3 are different from Example 3 in that the smoke shielding member having elasticity is provided in the contact portion of the fire door when fully closed. Other than that, the second embodiment and the fourth embodiment are different from each other in that the smoke shielding member having elasticity is provided at the contact portion of the fire door when fully closed. And the others are the same. That is, Example 3 and Example 4 are characterized in that they have higher smoke barrier properties than those of Example 1 and Example 2, respectively.

In the first to fourth embodiments, the height adjusting means, the pressure contacting means, the speed adjusting means, etc., after hanging the fire door are all implemented in the same manner, so that they will be described together.

First, in order to clarify the difference in the drawing, the description will be made with reference to FIG.
The smoke-shielding member 9 having elasticity is provided on the vertical frame 12 on the side of the opening and on the door-end side. The present invention is characterized by further improving the smoke shielding property as compared with the embodiment of FIG. 5 and FIG. 2, FIG. 6 and FIG. 3 are different only in the presence or absence of the smoke shielding member 9 in the upper frame 11 of the opening, and the other is the same.

First, the difference in structure between the first embodiment and the second embodiment will be described. In the first embodiment, as shown in FIGS. 1 and 2, the angle member 4 is once attached to the wall side while being inclined in the direction of closing the fire door. The slide rail 2 is attached to the angle member 4 so as to face the floor surface, and the inner rail 2a of the slide rail 2 is further provided with a connector attachment member 5, and the fire door 1 is attached to the connector attachment member 5. In the second embodiment, as shown in FIG. 3, the slide rail 2 is directly mounted on the wall side so that the slide rail 2 faces the front and is inclined in the closing direction of the fire door. The inner rail 2a is further provided with a connector attachment member 5, and the fire door 1 is hung on the slide rail 2 via the connectors 3 on the connector attachment member 5.

FIG. 7 is a perspective view showing the structure of the connector 3. The connecting tool 3 includes upper and lower connecting brackets 6, 6, T-shaped hanging connecting shafts 7, 7, a long nut 8, and a lock nut 8a.
And 8b. The T-shaped suspension connecting shaft 7 has a structure for swinging the connecting part by two parallel shafts, and the vertical shaft is engraved with screws in the left and right directions. Both screws rotate the long nut 8 by a turnbuckle method. By doing so, the height of the fire door 1 can be adjusted horizontally with respect to the floor, and after setting, the position is locked by the lock nuts 8a and 8b. Further, the upper connecting bracket 6 is horizontally attached to the lower connecting bracket 6 on the connecting member attaching member 5 which is obliquely attached.

As a pressing device for pressing the fire door in the direction of the opening when fully closed, the mounting position and the mounting procedure are shown in FIGS. 2, 3, 5, 6 and 8. The crimping device is a wedge-shaped displacing tool 13 having parallel portions behind the front and rear connecting brackets 6 on the side of the fire door and the cover portion at the bottom of the fire door.
And the rotating body 14 are respectively provided. In this case, the displacement tool 13 may be a wedge-shaped one having a parallel part behind it or a wedge-shaped one having no parallel part. In the former case, if the rotating body 14 is set so as to stop at the parallel portion that has passed the wedge shape when fully closed, smoke can be shielded from the opening portion with more stable pressure contact force. In this case, if the wedge-shaped inclination angle is as small as possible, the self-closing force can be effectively utilized. In the latter case, the pressure contact force at the time of fully closing can be freely selected and set by setting the respective rotating bodies 14 so that the same pressure contact displacement amount can be obtained at the same time. In the case of the first to fourth embodiments, the displacement tool 13 and the rotating body 14 provided at the bottom of the fire door are provided outside the fire door, but are provided in the groove wall 33 at the bottom of the fire door as shown in FIG. Steady rest roller 1
It is also possible to use 5 as a rotating body, provide a wedge-shaped displacement tool 13 on the groove wall 33, and press it against the opening side by the steady rest roller 15.

As shown in FIGS. 1 to 6, the speed governor has a pulley 17 having a semicircular groove on its wall side, which is a mounting bracket 16 extending from a connector mounting member 5 mounted on the inner rail 2a. Is rotatably provided, and a large-diameter timing pulley 18a equipped with a one-way clutch bearing (not shown) is attached to the extension shaft of the pulley 17 so as to be rotationally transmitted only when the pulley is closed.
a and the toothed rotary shaft 18b of the centrifugal governor are connected by a timing belt 19, while a wire rope 20 is stretched above the slide rail 2 in parallel with the slide rail 2.
The wire rope 20 is wound around the pulley 17 and is transmitted to the speed control unit 21 by the wire rope winding transmission when the fire door is closed. Therefore, in the first to fourth embodiments, the brake is applied while being closed, and the brake is not applied when the brake is opened.

FIG. 10 is a lower sectional view of the fire door 1. As shown in FIG. 10, the fifth, sixth, seventh and eighth embodiments are provided with an elastic smoke shield member band 22 on the opening side of the lower frame of the fireproof doors of the first, second, third and fourth embodiments, respectively. The elastic smoke shield member band 22 is grounded when closed,
This is configured such that when fully closed, the opening 3 side and the lower part of the fire door have a fire and smoke blocking structure on the periphery 4 sides.

Examples 9, 10, 11 and 12 are Examples 1 to 1.
4, FIG. 11 and FIG.
The forced retraction device 32 shown in FIG. 2 is provided. FIG. 11 and FIG. 12 are a front view and a top view of the installation of the forced retraction device 32, respectively. The configuration of the forcible pulling device 32 includes a forcible attracting device 23 and a pulling guide plate 24 provided at a position facing the forcible attracting device 23 in the vertical frame on the sliding door front side.

The structure of the forced pulling device 23 will be described. A rotatable guide wheel 26 is pivotally attached to the tip of a lever 25 formed of a single flat plate, and one of tension springs 27 is locked in the middle of the lever 25. Locking lever 28 is provided, the rear end of the lever 25 is mounted on the upper surface of the sliding door, the lever 25 has a fulcrum shaft 29 for rotation, and the front and rear ends are bent. It is worn. The rear bent portion is a portion where the other end of the tension spring 27 is locked, and a spring locking hole (not shown) is provided. The bent portion of the front portion is a lever stopper for adjusting the lever stop position so that the fulcrum shaft 29 of the lever bracket 30 is located on or above a straight line connecting both end locking portions of the tension spring 27.

Next, the operation of the forced pulling device 23 will be described. A wedge-shaped displacement tool 13 having front and rear connecting brackets 6 on the side of the fire door and a cover portion at the lower part of the fire door end and a parallel portion provided is provided. At the same time when the tip reaches the mounting position of the rotating body 14, the guide wheel 26 at the tip of the lever 25 collides with the tip of the pulling guide plate 24 at the opposite position, and the guide wheel 26 moves upward. Then, the tension springs 27 that have been lined up in a straight line up to now to maintain balance are collapsed, and the restoring force of the tension springs 27 causes the lever 25 to start to rotate around the fulcrum shaft 29, so that the guide wheel 26 pulls on the guide plate 24. When the run-up pulls up to the top of the guide plate 24, the fulcrum shaft 29 of the lever bracket 30 tries to rotate further due to the restoring force of the tension spring 27 around the shaft of the guide wheel 26, so that the sliding door 1 is forcibly closed. Will be drawn in.

Next, the operation of releasing the forced pulling device 23 will be described. When the sliding door 1 is opened, the guide wheel 26 at the tip of the lever 25 rises and reaches the apex of the guide plate 24. It descends while passing down the wall. Then, when the guide wheel 26 finally comes into contact with the end of the guide plate 24 on the side opposite to the side where the guide wheel 26 collides when closed, the fulcrum shaft 29 is located on a straight line connecting the both end locking portions of the tension spring 27 or above the straight line. As a result, the tension spring 27 is balanced and the lever 25 is stably fixed.

Further, in the normally closed smoke-shielding fire door devices of Examples 1 to 6, a locking device is provided at the fully open position and a locking tool is provided on the fire door, and the locking device is interlocked with a fire alarm or a smoke detector. If it is done, it can be applied as a normally open fire door.

[0025]

Since the device of the present invention uses the slide rails which are slanted in the closing direction of the fire door, it is not necessary to provide an automatic closing device and is inexpensive, and the door weight of each device in the slide rails is low. Since it is dispersed in the bearings, each bearing has to support a small load compared to a suspended vehicle, extending the life of the fire door, and an elastic smoke-shielding member is provided at the peripheral edge of the fire door. Since the fire door is pressed by the pressure contact means, the opening and the fire door are brought into closer contact with each other, and the smoke shielding effect is enhanced. Also, when the door is closed, the speed control means is provided so that the fear of acceleration due to the closing of the door is released and there is no need to worry about finger stuffing.

[Brief description of drawings]

FIG. 1 is a front view showing how the fire door is hung when the front cover of the first embodiment is removed.

2 is a vertical sectional view of a slide rail mounting portion when the front cover of FIG. 1 is mounted.

FIG. 3 is a vertical sectional view of a slide rail mounting portion according to a second embodiment with a front cover attached.

[Fig. 4] Fig. 4 shows how the fire door is hung when the front cover of the third embodiment is removed.

FIG. 5 is a vertical sectional view of a slide rail mounting portion when the front cover of FIG. 4 is mounted.

FIG. 6 is a vertical sectional view of a slide rail mounting portion according to a fourth embodiment with a front cover attached.

FIG. 7 is a perspective view showing the configuration of the connector 3.

FIG. 8 is an explanatory view of a pressure welding device.

FIG. 9 is a lower sectional view of the fire door with the crimping device.

FIG. 10 is a sectional view of the lower part of the fire door of Examples 5-8.

FIG. 11 is a front view of the installation of the forced retraction device.

FIG. 12 is a top view of the installation of the forced retractor.

[Explanation of symbols]

1, fire door 2, slide rail 3, connecting tool 4, angle member 5, connector attachment member 6, connecting bracket 7, hanging connecting shaft 9, smoke shield 11, opening top frame 12, Tojiri side opening vertical frame 13, displacement tool 14, rotating body 15, steady rest roller 17, pulley 20, wire rope 21, speed control unit 22, smoke shield 23. Forced attracting device 24, pulling guide plate 25, lever 27, tension spring 28, locking shaft 29, fulcrum axis 31, front cover 32, forced retractor

Claims (7)

[Claims] 1. A suspension which forms a fire and smoke barrier structure with a door and a door end side vertical frame, an opening upper frame, an opening 3 sides of a door end side vertical frame, and a fire door, which the fire door abuts when fully closed. In a door-type pulling fire door, a slide rail is laid so as to be inclined in the closing direction of the fire door, and the inner rail and the fire door of this inclined laying slide rail have a swinging structure in a direction perpendicular to the traveling direction of the fire door. At least one of the connecting tools has a height adjusting means, and the fire door is provided with a speed control means that operates only when the fire door is closed, and a pressure for pressing the fire door to the opening side when fully closed. A normally-closed smoke-proof fire door device characterized by being provided with installation means 2. A door-end vertical frame of the opening 3 with which the fire door comes into contact when fully closed, an upper frame of the opening, and a vertical frame at the door end side of the opening, or a fire door that comes into contact with the opening 3 when fully closed. 2. A normally-closed smoke-shielding fire door device according to claim 1, wherein a smoke-shielding member having elasticity is provided on either one of the portions to further enhance the smoke-shielding property. 3. An elastic smoke-shielding member is provided on the opening side of the lower door of the fire door so as to contact the ground when the fire door is fully closed. It is formed in a smoke shielding structure, The claim 1 or claim 2 characterized by the above-mentioned.
Normally closed smoke-proof fire door device 4. The height adjusting means has a turnbuckle structure, and the height adjusting means has a turnbuckle structure.
Normally closed smoke-proof fire door device 5. The displacing member and the rotating body so that the pressure contact means slides and displaces diagonally to the front opening direction from the sliding door rectilinear motion immediately before the pressure contact means reaches the fully closed position so that the fire door is pressed against the opening when fully closed. 5. The normally closed smoke-shielding fire door device according to claim 1, wherein 6. The wire rope side of the mounting bracket, wherein the speed governing means that operates only when closed is composed of a wire rope and a speed governing unit, the wire rope is stretched in parallel with the slide rail, and is pulled out from the fire door side. A pulley having a groove on its circumferential surface is rotatably provided, and a rotary shaft of a centrifugal governor for generating a braking force is connected to an extension shaft of the pulley directly or through a speed increasing means, and is further closed in the transmission shaft. The speed governing unit is constructed by using the one-way rotating means so that it is driven to rotate only, and the wire rope is wound around the pulley and the self-closing power of the fire door is transmitted to the speed controlling unit by the wire rope winding conduction. 6. The normally closed smoke-shielding fire door device according to claim 1, wherein the smoke-closing fire door device is controlled. 7. The normally-closed smoke-shielding fire door device according to claim 1, further comprising a forced retracting means provided in a closing direction on an upper surface of a sliding door front side.