JPS58556B2 - Shutter-no-ji-do-heisa-ouchi - Google Patents

Description

[Detailed Description of the Invention] This invention is usually rolled up and stored on the ceiling of a passageway such as a building or an underground passage, and when a fire or the like occurs, it is automatically lowered by the action of a smoke detector or heat detector. The present invention relates to a shutter opening/closing device for a so-called smoke-proof shutter, which closes the above-mentioned passage.

Conventional emergency opening/closing devices of this type have a drawback in the positional relationship between the emergency operating lever that constitutes the device and the lock lever that engages and holds the lever.Due to long-term use, the positional relationship may shift, resulting in However, there is a problem in that it may not work in some cases and lacks reliability.

In view of the above points, it is an object of the present invention to provide a highly reliable emergency closing device for a shutter by always maintaining a normal positional relationship between the emergency operation lever and the lock lever.

Next, a shutter opening/closing device according to the present invention will be explained with reference to an embodiment shown in the drawings.

FIG. 1 is a perspective view of a shutter device having the above-mentioned opening/closing device, which is installed on the ceiling of a passageway such as a building or an underground passage, and the outline of the above-mentioned shutter device will be explained with reference to the figure.

In the figure, a slat curtain 1 opens and closes a passage A by being rolled up and stored in a case 2 installed on the ceiling, or rolled down.

The slat curtain 1 is attached to the side end of the case 2.
It is equipped with various mechanisms for operation, and in particular, an opening/closing machine 4 is equipped with a drive shaft, a motor, a speed reducer, a brake drum, etc., which are interlocked and connected to a winding drum loosely inserted into the winding shaft 3 of the curtain 1. Equipped.

5 is a magnet switch box for normal operation; 6 is a limit switch that operates by detecting the upper and lower limits of the curtain 1; and 7 is a brake operating mechanism box.

Further, 8 is a manual chino, and 9 is a push button switch box for normal operation, which has three push buttons: UP, DOWN, and 5TOP.

Reference numeral 10 denotes an emergency operation box in which manual operation levers for a shift wire 43 and a cancel wire 40, which will be described later, are built-in.

2 to 12 are diagrams showing details of the internal mechanism of the brake operating mechanism box 7 and the brake mechanism in the opening/closing machine 4, and the brake mechanism will be explained with reference to the figures.

First, inside the brake operation mechanism box 7, a normal switch 11 consisting of an AC plunger type electromagnetic switch operated by a commercial power source and an emergency switch consisting of a DC plunger type electromagnetic switch operated by an internal battery are installed. 12 are provided.

First, the normal switch 11 is interlocked with the motor of the switch 4 and its drive shaft, which is driven by the operation of the switch in the magnetic switch box 5 by the push operation of the Up and Down buttons in the push button switch box 9. The switch 11 is activated by energizing the normal plunger 13.
The suction is activated on the side.

Further, the motors of the normal switch 11 and the switch 4 can be de-energized by the operation of the 5TOP button of the switch box 9 and the limit switch 6.

14 is a normal operation lever in the shape of a bell crank, which is attached to the main support shaft 1.
A normal operating rod 16 whose intermediate portion is rotatably supported by a lever 5 and protrudes from the outer wall of the proximal end of the lever is inserted through and engaged with an operating window 17 at the operating end of the normal plunger 13. has been done.

Reference numeral 18 denotes a bell-crank-shaped brake lever, which is rotatably supported around a rotation center shaft 19 provided at a bent portion thereof, and protrudes forward at right angles from the tip of its substantially horizontal arm portion. The receiver is on the operating part 20 made of a plate piece,
The tip operation portion 14a of the normal operation lever 14 is brought into contact with the normal operation lever 14.

Furthermore, a screw is inserted into the opposite side of the brake lever 18, that is, the outer wall surface of the tip of the substantially vertical arm portion, so that the brake shoe cam lever 21, which is set in the vertical direction, can be freely screwed into the outer wall surface of the upper end portion of the brake shoe cam lever 21. adjustment screw 22
The leg end of the brake shoe cam lever 2 is brought into contact with the brake shoe cam lever 2.
The lower end of the brake shoe cam rod 24 is fixed to the base end of a brake shoe cam rod 24 having a butterfly-shaped brake shoe cam 23 at its tip.

Reference numeral 25 denotes a blue kitram installed in the opening/closing machine 4, and on its outer periphery, a brake shoe 27 which can be freely expanded and contracted in a hinge-like manner via a brake lining 26 is attached to the drum 2.
The tips of both pieces constituting this shoe 27 extend outward in parallel to form an operating piece 27.
a, 27a are all becoming.

A tension spring 28 is suspended between the two operating pieces 27a and 272, and the two operating pieces 27a.

The brake shoe cam 23 is inserted into the intermediate portion of 27a.

In this way, the brake drum 25 is normally clamped and fixed via the brake lining 26 by the force of the spring 28 of the brake shoe 27, and when the normal switch 11 is energized, the normal plunger 13 and the normal operation lever 14,
Brake lever 18, brake shoe cam lever 21,
Brake shoe cam 23 rotates half a rotation via rod 24
Due to the force, both operation pieces 27a of the brake shoe 27 are moved.

27a is pushed outward and the shoe 27 is loosened, and the brake drum 25 becomes free.

Next, the emergency switch 12 is activated by the operation of a smoke detector or a heat sensor separately installed in the building, and the emergency plunger 2 is thereby activated.
9 is adapted to be absorbed into the switch 12 side.

30 is a bell crank-shaped emergency operation lever, which is attached to the main support shaft 1.
An emergency operating lever 31, whose middle portion is rotatably supported by a lever 5 and protrudes from the outer wall of the proximal end of the lever, is engaged with the operating end of the emergency plunger 29, and the emergency operating lever 3
The tip operating section 30a of No. 0 is adapted to abut on the operating section 20.

Further, the emergency operation lever 30 is biased by a spring 51 with an impetuous force in the direction of upward movement of the operation portion 30a.

32 is an emergency microswitch that is brought into contact with the outer edge of the base side of the emergency operation lever 30, and is activated for a while (several seconds) after the activation of the emergency switch 12 is detected by the action of the lever 30.
Then, the current to the emergency switch 12 is cut off, and the emergency switch 12 is placed in a non-operating state.

Reference numeral 33 denotes a lock lever, the base of which is rotatably supported on a sub-support shaft 34 installed parallel to the main support shaft 15, and the lock lever 33 is connected to the emergency operation lever 30 in the supported position. The spring 35 applies a repelling force in the direction of the emergency operation lever 30 .

Further, the intermediate portion of the biasing front edge of the lock lever 33 is formed with a notch step, thereby forming an engaging portion 36, and this front edge is provided with a tip for operating the emergency operation lever 30. A lock pin 37 protruding from the side wall surface of the arm is constantly pressed, and when the emergency operation lever 30 is tilted to its operating position, the lock pin 37 engages with the retaining portion 36 and the emergency operation lever 30 is operated as described above. It is designed to lock in position.

Furthermore, a cancel pin 38 is provided on the side wall surface of the upper end of the lock lever to protrude in a right angle direction, and the cancel pin 38 has a cancel portion 14b projecting upwardly from the normal operating lever 14. During normal operation, it is brought into contact with and pushed.

Reference numeral 39 denotes a cancel lever, the base end of which is rotatably pivoted to the sub-support shaft 34, and when the cancel wire 40 tied to the lever 39 is pulled against the return spring 41, the cancel pin is released. 38 is pushed rearward against the force of the spring 35.

Reference numeral 42 denotes a shift lever, the base end of which is rotatably connected to the main support shaft 15. When the shift wire 43 tied to the lever 42 is pulled against the return spring 44, the lever 42 is moved. A shift pin 45 protruding from one side wall pushes the upwardly projecting shift portion 30b of the emergency operation lever 30 in the operating direction of the lever 30.

The operation ends of the cancel wire 40 and the shift wire 43 are located in the emergency operation box 10 at hand, and can be manually operated.

Reference numeral 46 denotes a cancel focus, one end of which is engaged with the lock lever 33, and the other end of which is engaged with one end of a bell crank-shaped cancel cam 48 whose intermediate portion is separately pivoted by a pivot shaft 47.

The other end of this cancel cam 48 is connected to the manual chino 8.
The upper end comes into contact with one edge of the friction lever 50 that rotates together with the chain wheel 49 wrapped around it, and as the friction lever 50 moves, the cancel cam 48 is kicked up, and the lock lever 33 moves rearward. The engagement with the lock pin 37 is released.

When the lock lever 33 is pushed forward, that is, when it is unlocked, the mutual positional relationship is determined so that the cancel cam 48 and the friction lever 50 do not come into contact with each other.

Next, the operation of the smoke-proof shutter device will be explained.

The operations can be roughly divided into four cases: ∎ normal opening/closing operation, ∎ emergency automatic closing operation, ∎ manual operation, and ∎ reset operation, and each of the above operations will be explained in turn.

■ First, we will explain the normal opening and closing operations.

When you press the Up or Down button on the push-button switch box 9, the normal switch 1 opens as shown in FIG.
1 is energized and pulled by the normal plunger 13, the tip operating portion 14a of the normal operating lever 14 pushes the operating portion 20, thereby causing the brake lever 18, the brake shoe cam lever 21, and the brake shoe cam rod 24 to move. The brake shoe cam 23 rotates through the brake shoe cam 23 to push the brake shoes 27 apart and free the brake drum 25.

At the same time, the motor in the opening/closing machine 4 is rotated forward or reverse via the switch in the Macnet switch box 5, and the winding drum is rotated in the forward or reverse direction, thereby winding up or lowering the slat curtain. , to open and close passage A.

When the curtain 1 is rolled up or lowered, the limit switch 6 is activated to turn off the power to the motor and the normal switch 11. Therefore, the rotation of the winding shaft 3 is stopped, and at the same time the normal operation lever 14 is turned back to its original position. and return to the position of
The brake drum 25 is clamped and fixed through an operation opposite to the above.

During the above normal opening/closing operation, the slat curtain 1
5T of the push button switch box 9 to stop the
Push the OP button.

Then, at this midway position, the motor of the switch 4 and the normal switch 11 are powered off, and by the same operation as above, the brake drum 25 is fixed and the slat curtain 1 is stopped at the midway position of the passage A. .

■ Next, we will explain the automatic closing operation in case of emergency such as fire.

When a separate smoke detector or heat sensor is activated, the emergency switch 12 linked therewith is activated from the position shown in FIG. 6 as shown in FIG. The tip operating portion 30a of the lever 30 pushes the operating portion 20.

make it move.

Then, through the same thread path as in the normal opening/closing operation,
The brake drum 25 becomes free and the curtain 1 falls under its own weight, blocking the path of smoke or flame.

Now, in the above operation, when the emergency operation lever 430 is activated, the microswitch 32 is turned on, which turns off the power to the emergency switch 12 after a while (2 to 3 seconds), thereby preventing wastage of the battery.

Here, even if the power to the emergency switch 12 is turned off, the lock pin 37 of the emergency operation lever 30 slides on the front edge of the lock lever 33 and engages the engaging portion 36, as shown in FIG. Since they are engaged and temporarily fixed and the operating portion 20 is continued to be pressed, the closing operation continues.

■ Manual operation is mainly performed during power outages.

First, the manual operation of opening and closing the curtain 1 by rotating the manual ceno 8 in the forward or reverse direction at hand is the same as in the conventional method.

Next, manual continuous lowering (closing) operation will be explained.

This operation is mainly for performing normal or emergency continuous closing during a power outage, and is performed by pulling the manual operation lever of the shift wire 43 in the emergency operation box 10 at hand.

Then, when the shift wire 43 pulls the shift lever 42, the shift pin 45 pushes the shift portion 30b of the emergency operation lever 30 and locks the operation portion 30a of the lever 30 at the operation position, so that the brake drum 25 It is opened and the curtain 1 falls under its own weight.

■ Next, the reset operation will be explained.

When the emergency automatic closing operation described above and the manual continuous lowering operation described in Locked in position, the brake drum 25 therefore remains open and cannot lock the curtain 1 in its position above the passageway.

Therefore, it is necessary to reset the emergency operation lever 30 to its original non-operating position, which is a reset operation.

There are three types of reset operations: (1) manual continuous descent stop reset operation, (2) reset operation using manual cheno 8, and (2) normal opening/closing reset operation. Each reset operation will be explained.

■ Manual continuous descent stop reset operation.

This is mainly for stopping the slat curtain 1, which is continuously lowered by operating the operating lever of the shift wire 43 in the emergency operation box 10, in the middle of its descent, as explained in (1) above. 1
Pull the manual operation lever of the cancel wire 40 in 0.

Then, the cancel lever 39 moves to the cancel pin 38.
By pushing the lock lever 33, the lock pin 37 is removed from the engaging portion 36, and the curtain is stopped in the middle of closing due to pressure from the brake drum 25, and the reset operation is completed.

■ As shown in Fig. 11, the setting operation using a manual cheno is that when the manual chino 8 is rotated forward and backward, the chino wheel 49 rotates, and the friction lever 50 that rotates together with this rotates the cancel cam. 48, and cancel focus 46 and lock lever 3.
3 is pulled rearward to remove the lock pin 37 from the engagement portion 36, thereby resetting the lock pin 37.

(2) The normal opening/closing reset operation, along with the operation (2) above, is the most distinctive feature of this device.

That is, when the normal operation lever 14 is tilted from the lock position shown in FIG. 8 by the normal opening/closing operation shown in FIG. 37 is the engaging part 3
6 and is reset.

As shown in FIG. 9, when the emergency operating lever 30 is in the reset position (non-operating position), the lock pin 37 is brought into contact with the upper front edge of the engaging portion 36 of the lock lever 33. Since the lock lever 33 is pushed backward and positioned, even if the normal operating lever 14 is tilted forward as shown in FIG.
4 and the cancel pin 38 are never in contact with each other.

In this way, if normal opening/closing operations or opening/closing operations using a manual chino are performed, the state of each mechanism after an emergency closing operation is as follows.
It is automatically reset as it is, so there is no need to manually reset the lever etc. each time after the emergency closing operation, and the operation is extremely safe and efficient.

As another embodiment of the present invention, the normal switch 11 described above may be operated by a battery, or the emergency switch 11 may be operated by a battery.
2 may be operated by commercial power.

Further, the operating section 20 may be formed in two parts, one for normal use and one for emergency use.

As explained above, the present invention includes an emergency operation lever 30 which is rotated to the moving operation position by activation of the emergency switch 12 and pushes the operation part 20, thereby lowering the slat curtain of the shutter; A lock lever 33 that engages and fixes the emergency operation lever 30 in the moving operation position is always attached to the lock lever 33, which is a part of the lock pin 37 of the emergency operation lever 30 in both the emergency position and the normal position. By applying elastic pressure to the front edges where the notch engaging portions 36 of the levers 30 are formed, the two levers 30.
Even if there is play in the pivot part of 33, there is no risk of the mutual positional relationship between the two levers being shifted, and the emergency operation or return operation can always be performed accurately. This has the effect of improving the reliability of the device.

In addition, in this invention, the emergency operation lever 30 and the lock lever 33, which are the main parts of the closing device, are always opposed to each other and in a pressed position both in normal times and in emergencies, so that the entire device is It has the effect of being able to be formed compactly.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the entire shutter having an opening/closing device according to the present invention, Fig. 2 is a perspective view showing the internal structure of the brake actuation mechanism box, and Fig. 3 is a perspective view showing the internal structure of the brake actuation mechanism box. FIG. 4 is a perspective view showing the link mechanism for normal opening/closing operation, FIG. 5 is a perspective view showing the link mechanism for emergency closing operation, FIGS. 6 and 7, Figures 8, 9, and 10 are diagrams showing the operational positional relationships of the normal operation lever, emergency operation lever, and lock lever, respectively, and Figure 11 is the interlocking relationship between the lock lever and the ceno wheel of a manual ceno. FIG. 12 is a front view showing the locking mechanism of the brake drum. 12...Emergency switch, 15...Main shaft, 20...Operation section, 29...Plunger, 30...Emergency Operation lever, 33...
... Lock lever - 134 ... Subtext axis, 35 ...
...Spring, 36...Engagement part, 37...
...;Lock pin.

Claims (1)

[Claims] 1. An emergency switch 12 in which a plunger 29 moves forward and backward when activated by the operation of a heat sensor or a smoke detector or manually, and an intermediate portion rotatably supported by a main support shaft 15. It is an emergency operation lever 30 whose base end is engaged with the plunger 29, and has a lock pin on one side of its distal end that rotates around the main support shaft 15 as the plunger 29 moves forward and backward. 37 is projected and a tip operation portion 30a is formed in a part of the tip portion of the emergency operation lever 30; A lock lever 33 that is rotatably supported and urged by a spring 35 in the direction of the distal end of the emergency operation lever 30,
A lock lever whose front edge facing the tip of the emergency operating lever 30 is always pressed by the lock pin 37, and in which a part of the front edge is formed with an engaging portion 36 formed by a notch step. 33, and an operating section 20 that is pushed in a moving operating position by rotation of the tip operating section 30a based on activation of the emergency switch 12 to lower the slat curtain of the shutter, and the operating section 20 lowers the slat curtain of the shutter.
Reference numeral 0 denotes an automatic shutter closing device in which the lock pin 37 is engaged and fixed to the engaging portion 36 of the lock lever 33 in the moving operation position. 2. The lock lever 33 is moved in the engagement and fixed position through an appropriate interlocking mechanism by manual operation of an operating part such as a button, lever, or chino at hand, so that the lock lever 33 is connected to the emergency operation lever 30. An automatic closing device for a shutter according to claim 1, which is configured to be released from engagement and fixation.