JP2599550Y2 - Curved folding door that automatically closes in an emergency and its driving device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved folding door which automatically closes in an emergency such as a fire.

[0002]

2. Description of the Related Art When an opening / closing device is installed in an opening serving as a fire protection compartment, the opening / closing device must be able to automatically operate in an emergency to close the opening. Conventionally, a shutter or a sliding door is used as the opening and closing device, and if a fire occurs, the shutter or the sliding door is controlled to automatically close upon sensing heat or smoke.

[0003] An "automatic door opening device for security when the power supply of a moving door is shut off" according to Japanese Utility Model Publication No. 1-44701 is one of the prior arts. Although the device is of the sliding door type and operates to open automatically in an emergency, the basic idea is the same. That is, the magnet has a magnet which is always excited, and the magnetic force attracts the opening operation body, and a wire is connected to the opening operation body, and the wire is energized by a spring force of a spiral spring. If the supply of power is cut off and the excitation of the magnet is released, the opening operating member is separated from the magnet and the wire is wound up. Therefore, the sliding door operates with the movement of the opening operation body, and the frontage is opened.

[0004] When the shutter or sliding door, which is a conventional opening / closing device, is used for a store in an underground shopping mall, it is not possible to do window shopping after the store is closed, and at the same time the scenery of the underground shopping mall is impaired. In addition, if the sliding door is used, there is a problem that the opening width is restricted, and the space of the storage unit becomes large. Therefore, the applicant was 1993
On January 19, an application was filed for the registration of a utility model for a "folding door that automatically closes in an emergency and its driving device" (Japanese Utility Model Application No. 5-66748).

[0005] This utility model is a device for automatically closing a folding door, which is provided with a driving device, the driving device being a pulling device for winding a string such as a wire, and a locking fitting connected to the tip of the wire. A locking device for locking the locking hardware, and a wire stopper fixed to the door frame, the locking device is provided on the hanging side, the pulling device is provided on the door side, and only a string is provided on the wire stopper. An insertion hole is formed, and the locking device functions to release the locking fitting in response to a signal from a sensor provided at an appropriate location.

[0006]

[Problems to be solved by the present invention] A folding door equipped with an automatic closing device opens and closes along a straight rail, but the frontage of a store is not only flat, but also convexly curved. Many. The present invention is directed to a folding door device having a curved portion at least in part and opening and closing along a curved surface, and provides a folding door device equipped with an automatic closing device.

[0007]

The closing device according to the present invention is a folding door that opens and closes in a curved manner, and the door that is folded to open the frontage is automatically extended in an emergency to close the frontage. Works as follows. As is well known, a folding door is formed by connecting a plurality of panels so as to be freely bent. The folding door is suspended from an upper rail, and is opened and closed by pulling or pushing a door frame. Therefore, a drive is provided so that the folding door closes automatically. Folding doors that run along straight rails have joints that can bend the panel in only one direction by 90 degrees, but in order to run along curved rails, the width of the upper rail must be increased. Alternatively, by changing the joint structure, bending to the opposite side is also possible.

Here, the driving device is a device in which a string such as a wire is urged by a spring so as to wind the string around a drum, and a lock is connected to the end of the string. The cord is always locked to the device and the cord is in an extended state. Then, when a sensor provided at an appropriate location detects heat or smoke, the latch is released from the latch device, the string is wound around the drum, and the latch moves with the string. Run the wire stopper, the wire stopper pulls back the door frame of the folding door, extends the folding door,
Close the frontage.

The wire stopper is provided so as to be able to travel along a curved upper rail, and a wire stopper locking arm extends from a door frame of the folding door, and the wire stopper locking arm is connected to the wire stopper locking arm. The stopper comes into contact and the door frame is pulled back. By the way, there is a case where the driving device is provided inside a frame body independent of the folding door, and the frame body is provided along the curved upper rail. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0010]

FIG. 1 shows a folding door which can be automatically closed in an emergency according to an embodiment of the present invention. As shown in the figure, the folding door is constituted by connecting a plurality of panels 1, 1... In a freely bendable manner, and is characterized by a joint structure for connecting the panels so as to be able to travel along a curved rail. The frontage can be opened by folding it to one side. Here, the curved rail refers to a rail having a curved portion at least in part, and may be not only an arc-shaped rail but also a curved L-shaped rail. Since the joint structure that can be bent is a well-known technique, the description thereof is omitted here.
A suspension vehicle is attached to the upper end of the main joint, and the suspension vehicle runs inside the upper rail, and when folded, the auxiliary coupling is kicked out of the frame from the upper rail.

In the figure, 2 is a locking device, 3 is a wire stopper, 4 is a pulling device, and 5 is a wire, and constitutes a driving device for automatically closing the folding door of the present invention. The locking device 2 locks the locking metal 6 fixed to the end of the wire to the metal fitting receiving portion of the locking device 2, and when a sensor provided at an appropriate location detects heat or smoke, Release the lock 6. Although a specific means for locking the locking fitting 6 to the fitting receiving portion is not limited, an electromagnet is basically used. Further, the wire stopper 3 has a small through-hole, and the wire 5 can be inserted into the through-hole, but the locking metal 6 cannot pass through.

The wire stopper 3 rotatably supports four vertical rollers 7, 7,... And horizontal rollers 8, 8, and runs on a rail provided along the upper rail. The wire stopper 3 travels by being pulled by the wire 5, abuts on a wire stopper locking arm 10 extending from the upper end of the door frame 9 of the folding door, and moves the door frame 9, thereby closing the folding door. . Incidentally, the tensioning device 4 has a built-in spiral spring, and rotates the drum using the spring force of the spring. The wire 5 can be wound around this drum and draw the door frame 9 of the folding door.

FIG. 2 is a schematic view showing the opening / closing operation of the folding door of the present invention.
B indicates a closing movement in an emergency. The locking device 2 is arranged on the hanging side of the folding door, the pulling device 4 is provided on the door end side, and the locking metal 6 fixed to the tip of the wire 5 is locked by the locking device 2. For this purpose, the wire 5 is partially curved and extended from the pulling device in contact with the wall surface of the frame 11 in which the driving device is installed. The wire stopper 3 is located at a position close to the locking device 2. In this state, the folding door can be manually opened and closed by operating the front door frame 9, and is not affected by the driving device.

FIG. 2b shows the case of automatic closing by the drive device. If the locking device 2 detects heat or smoke to release the locking fitting 6, it is pulled by the wire 5 to run the wire stopper 3, and the wire stopper 3 is moved.
Abuts on a wire stopper locking arm 10 attached to the door frame 9 of the folding door. Therefore, the door frame 9 is moved by being pushed by the wire stopper 3, and the folding door can be automatically closed. When the locking metal fitting 6 at the end of the wire 5 released in this way is locked again with the locking device 2, the folding door is folded, the wire stopper 3 is pressed by the door frame 9, and the wire is moved. 5 is extended from the pulling device 4, and the door frame 9 is pressed so that the locking fitting 6 is locked to the locking device 2.

FIG. 3 shows a case where the wire stopper locking arm 10 is pressed by the wire stopper 3. As shown in FIG. 1, the wire stopper 3 has four vertical rollers 7, 7,... And two horizontal rollers,
8, and run on a running rail and a guide rail.
Of course, the travel of the wire stopper 3 is performed by the pulling force of the wire 5, and the distal end surface 12 thereof comes into contact with the wire stopper locking arm 10 and presses it. The door frame 9 has a hanging wheel attached to its upper end, and the hanging wheel runs on the upper rail. Here, the wire stopper 3 has a small through-hole through which only the wire 5 is inserted but does not pass through the locking fitting 6,
The locking fitting 6 may be fixed to the wire stopper 3, and the wire 5 may be fixed to the distal end surface 12 of the wire stopper 3.

FIG. 4 shows a state in which the vertical roller 7 of the wire stopper 3 is mounted on the traveling rail 13 and the horizontal roller 8 is guided by the guide rail 14. Therefore, the wire stopper 3 travels along both rails 13 and 14 provided along the upper rail, and moves the wire stopper locking arm 10. The wire stopper locking arm 10 bends and extends from the upper end of the door frame 9, so that the pressing force of the wire stopper 3 not only moves the door frame 9 along the upper rail, but also the distance L between the hanging cars A moment that twists the leading frame 9 is given. Although not shown in FIG. 4, a guide roller may be attached to the wire stopper locking arm 10 so that the moment does not act on the door frame 9. As described above, the folding door of the present invention is provided with the drive device that automatically closes in an emergency, and can obtain the following effects.

[0017]

[Effect of the Invention] By using a folding door as an opening / closing device installed in a fire protection section such as an underground shopping mall, the scenery of the underground shopping mall can be improved, and wind shopping can be enjoyed. In particular, a curved folding door improves the appearance of the store, which cannot be obtained with a shutter device, and the storage space when folded is smaller than that of a sliding door, and the opening is enlarged accordingly. On the other hand, by installing a drive device for automatically closing the folding door in an independent frame, the driving device can be provided alongside a folding door configured with general specifications, and as a result, manufacturing costs are reduced and Maintenance inspection is also convenient. In other words, a frame that is curved with the same curvature as the upper rail is manufactured, and the drive unit is installed,
This may be attached to the upper rail.

[Brief description of the drawings]

FIG. 1 is an overall schematic view of a folding door provided with the automatic closing device of the present invention.

FIG. 2 is a schematic view showing an opening and closing operation of the folding door of the present invention, wherein a shows a normal opening and closing operation, and b shows a closing operation by a driving device.

FIG. 3 shows a state in which a wire stopper presses a wire stopper locking arm attached to a door frame.

FIG. 4 shows a state where a wire stopper moves along a traveling rail and a guide rail.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Panel 2 Locking device 3 Wire stopper 4 Pulling device 5 Wire 6 Locking metal 7 Vertical roller 8 Horizontal roller 9 Door frame 10 Wire stopper locking arm 11 Frame 12 Tip surface 13 Running rail 14 Guide rail

Claims (4)

(57) [Scope of request for utility model registration] 1. A folding door is constructed by connecting a plurality of panels so as to be freely bendable, and a folding door is suspended from an upper rail having a curved rail, and is guided by upper and lower rails so as to be openable and closable. A driving device is provided. The driving device includes a pulling device for winding a string such as a wire, a locking device connected to the end of the wire, a locking device for locking the locking device, and a wire stopper for a door frame. Attaching a stop arm, further having a wire stopper that runs along the upper rail and presses a wire stopper locking arm, the locking device is disposed on the hanging side, the pulling device is disposed on the door end side, A string is inserted into the small hole formed in the wire stopper, and the locking metal fitting at the tip is locked with the locking device, and the locking device releases the locking metal fitting upon receiving a signal from a sensor provided at an appropriate location. To function like Features a curved folding door that automatically closes in an emergency. 2. The curved folding door according to claim 1, wherein the wire stopper is provided with a locking metal, and a tip end of a cord extending from a pulling device is also fixed to the wire stopper. 3. A folding door is constructed by connecting a plurality of panels in a bendable manner, a folding door is hung on an upper rail having a curved rail, and is guided by upper and lower rails so as to be openable and closable. A driving device is provided. The driving device includes a pulling device for winding a string such as a wire, a locking device connected to the end of the wire, a locking device for locking the locking device, and a wire stopper for a door frame. Attaching a stop arm, further having a wire stopper that runs along the upper rail and presses a wire stopper locking arm, the locking device is disposed on the hanging side, the pulling device is disposed on the door end side, A string is inserted into the small hole formed in the wire stopper, and the locking metal fitting at the tip is locked with the locking device, and the locking device releases the locking metal fitting upon receiving a signal from a sensor provided at an appropriate location. Is something that works like A drive device for a curved folding door, wherein the drive device is provided in an independent frame, and the frame can be provided along the upper rail. 4. The driving device for a curved folding door according to claim 3, wherein a locking metal is provided on the wire stopper, and a string end extending from the pulling device is also fixed to the wire stopper.