JPH0446067Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an emergency unlocking device for a shutter such as an overslider installed in an opening of a building.

[Problems to be solved by the prior art and the invention]

Generally, some shutters such as this type of overslider are equipped with a function to extinguish the fire by opening the closed shutter curtain in the event of an emergency such as a fire.
Some are equipped with an emergency unlocking device that automatically unlocks the lock using the water pressure released from the fire hose. However, the conventional emergency unlocking device operates by applying water pressure to the hydraulically operated device 1 as shown in FIG.
When the first operating rod 11b protrudes, the operating rod 11b
presses the slide plate 17, thereby causing the slide plate 17 to move in parallel in the pressing direction, and the slide plate 1
The inclined guide surface 17a provided at the locking device 7 can be used for emergency unlocking by moving the switching lever 9a of the locking device toward the unlocking side. However, this device has the disadvantage that it is necessary to provide guide plates 18 and 19 at the front and rear in order to ensure the parallel movement of the slide plate 17, which increases the number of parts and makes assembly cumbersome and complicated. Unfortunately, when the slide plate 17 moves with the protrusion of the operating rod 11b, the switching lever 9a is suddenly pushed against the inclined guide surface 17a, so that the switching lever 9a moves between the guide 9b and the inclined guide surface 17a. This problem has been caused by the problem that smoothness is impaired due to the situation in which the switching lever is sandwiched between the locking levers and the movement of the switching lever toward the unlocking side is significantly inhibited due to the occurrence of rust or the like.

[Means to solve the problem]

In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing an emergency unlocking device for a shutter that can eliminate these drawbacks. The shutter curtain, which opens and closes the opening when the curtain is opened, has a hydraulic actuator that causes the actuating rod to protrude left and right when it receives a predetermined water pressure, and a switching lever that swings around an axis in the front and back direction to lock and unlock. In the shutter, the emergency unlocking means is provided with a locking means for locking the shutter, and an emergency unlocking means for unlocking the locking means in conjunction with the operation of the hydraulic actuating means. An actuating plate contacts the protruding actuating rod and swings around the vertical axis, and one end of the actuating plate locks on the other end of the actuating plate and moves back and forth in conjunction with the swinging of the actuating plate around the vertical axis. An operating lever that swings around an axis and whose tip displaces the switching lever from a locked position to an unlocked position in conjunction with the swinging around the longitudinal axis; and an operating lever whose tip corresponds to the locking position of the switching lever. and a bullet that urges the lever to be positioned on the side, and the operating lever swings due to the swinging of the actuating plate as the operating rod protrudes, and the switching lever is unlocked against the bullet. The device is characterized in that it is configured to automatically shift to a certain position.

With this configuration, the present invention is capable of reliably displacing the switching lever to the unlocking side when the hydraulic operating means detects water pressure and the operating rod protrudes, thereby smoothly performing emergency unlocking. It was made so that it could be done.

〔Example〕

Next, the present invention will be explained based on an embodiment shown in the drawings. In the drawings, reference numeral 1 denotes an overslider shutter curtain, and the shutter curtain 1 is opened and closed by being guided by a guide rail 2, as in the conventional art. Reference numeral 3 denotes a locking device provided on the shutter curtain 1, and the locking device 3 has handles 4 and 5 inside and outside, and can be rotated around the axis in the front and back direction by gripping the handles 4 or 5. By rotating, the rotating plate 6 rotates, and by pulling the wire 7 in the direction of the arrow, the latch is released from the latch (both not shown) and unlocked. Furthermore, the dead cam 9 at the tip of the cylinder 8 provided in the locking device 3 is
The dead bolt 10 is turned on the outdoor side by turning using a key (not shown), and on the indoor side by swinging the switching lever 9a, which is the tip of the dead cam 9, around the front-rear axis to the lock side. It is also conventional that the rotation of the rotary plate 6 can be restricted and the locked state can be achieved by the downward movement of the rotary plate 6.

Reference numeral 11 denotes a water pressure operating device (water pressure operating means), which detects a predetermined water pressure from a water hose or the like through a sensing portion 11a.
In addition, the operating rod 11b protrudes, and a pin shaft 13 is fixed in the form of a vertical axis to a frame 12 provided on the protruding end side of the operating rod 11b. An intermediate portion of an actuating plate 14 is pivotably attached to the pin shaft 13, and one end of the actuating plate 14 faces the actuating rod 11b. on the other hand,
Reference numeral 15 denotes an actuation lever, which is pivotably attached to the frame 12 by a pin shaft 15a facing in the front-rear direction, and its tip is located below the switching lever 9a. It has been extended to accommodate the location. Moreover, the other end of the actuation plate 14 is engaged with a notch 15b formed in the actuation lever 15. Further, 16 is a twisting bullet machine, and the bullet machine 1
6 is wound around the pin shaft 13, and the actuating plate 14
is biased so that one end thereof is positioned in a direction close to the operating rod 11b, but in this state, the tip of the operating lever 15 is positioned on the downwardly moved locking side. and hydraulic actuator 1
When water is sprayed on 1 to make the operating rod 11b protrude,
Due to the pressing force of the protruding actuating rod, the actuating plate 14 swings against the torsion mechanism 16, thereby causing the actuating lever 15 to move the switching lever 9a whose tip is located on the locking side upward. It swings as if pushing up, and in this way automatic emergency unlocking is performed.

In the embodiment of the present invention configured as described above, when a fire breaks out and you want to open the shutter curtain 1 to extinguish a fire indoors, you can apply water to the hydraulic actuator 11 with a fire hose, and the water pressure will be reduced. The actuating rod 11b protrudes, and in response, the actuating plate 14 and the actuating lever 15 each move to the pin shaft 1.
3, 15a as a fulcrum, it is automatically unlocked.

As described above, in the present invention, the lock can be automatically unlocked by applying water pressure to the hydraulic actuating device 11, but in this case, the forced transformation of the switching lever 9a to the unlocking side is controlled by the actuating lever. This is done by swinging the actuating plate 14 and the actuating lever 15 about their axes in response to the protrusion of the actuating lever 11b, so that a separate member such as a guide plate is required to ensure parallel movement, unlike the conventional sliding type. Not only was it possible to reduce the number of parts by eliminating the need for parts, thereby increasing assembly efficiency and reducing costs, but since all parts were of the swinging type, rather than using slides, it was assumed that rust, etc. would occur. Regardless of this, smooth emergency unlocking can always be performed, the operation is stable, and reliability can be greatly improved.

[Function and effect]

In summary, since the present invention is constructed as described above, it is an emergency unlocking means for emergency unlocking in response to application of a predetermined water pressure from a water hose to a hydraulic operating means in the event of an emergency such as a fire. However, in response to the actuating rod protruding when water pressure is applied, the actuating plate and the actuating lever swing around their respective axes, thereby displacing the switching lever from the locked position to the unlocked position. Automatic emergency unlocking will be carried out using this method. Therefore, there is no fear that emergency unlocking will not be performed due to concerns about the shifting operation of the switching lever, which is the case with the conventional slide method for emergency unlocking, and emergency unlocking can always be performed stably, reliably, and smoothly. Therefore, fire extinguishing operations can be carried out quickly.

[Brief explanation of the drawing]

The drawing shows one embodiment of the emergency unlocking device for a shutter according to the present invention, and shows the first embodiment of the emergency unlocking device for a shutter according to the present invention.
The figure is an overall front view of the overslider, Figure 2 is a rear view of the main part, Figure 3 is an explanation diagram of the function of the locking part, Figure 4 is
Figures A and B are a plan view and front view of the main part showing the non-operating state, respectively. Figures 5A and B are a plan view and front view of the main part showing the operating state respectively, and Figure 6 is a perspective view of the main part showing the conventional example. It is a diagram. In the figure, 1 is a shutter curtain, 2 is a guide rail, 3 is a locking device, 4 and 5 are handles, 6 is a rotating plate, 7 is a wire, 8 is a cylinder, 9 is a dead cam, 10 is a dead bolt, and 11 is a water pressure actuation device,
11b is an operating rod, 12 is a frame, 13 is a pin shaft, 14 is an operating plate, 15 is an operating lever, and 16 is a torsion machine.

Claims (1)

[Scope of utility model registration request] The shutter curtain, which opens and closes the opening by being guided by a guide rail installed vertically in the opening, has a hydraulic actuation means that causes the operating rod to protrude in the left and right direction when receiving a predetermined water pressure, and a hydraulic actuation means that operates to protrude in the left and right directions when receiving a predetermined water pressure. In a shutter provided with a locking means that is locked and unlocked by operating a swinging switching lever, and an emergency unlocking means for unlocking the locking means in conjunction with the operation of the hydraulic actuation means. , the emergency unlocking means includes an actuating plate having one end abutting the protruding actuating rod and swinging around a vertical axis, and an actuating plate having one end locked to the other end of the actuating plate. an operating lever that swings around a front-back axis in conjunction with swinging around a vertical axis, and whose tip displaces the switching lever from a locked position to an unlocked position in conjunction with swinging around the front-back axis; and a bullet for urging the tip of the lever to be located on the side corresponding to the locking position of the switching lever, and the operating lever swings due to the swinging of the operating plate as the operating rod protrudes. An emergency unlocking device for a shutter, characterized in that a switching lever is configured to automatically move to an unlocking position against a bullet.