JPH0367186B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a smoke evacuation device with a device for enlarging the elevation angle of a fenestration, which eliminates ventilation resistance.

Conventionally, a smoke evacuation device configured to be attached to an opening type window whose upper end is pivoted and opened by a protrusion device uses a non-reversible chain or hydraulic pressure as an opening means.
In order to exhaust toxic gas (smoke) in the event of a fire using a telescoping rod bomb that uses pneumatics, an attempt was made to open the window at a roughly half-right angle (45 degrees), but the path of the smoke was diverted to an slanted window. As a result, some of the smoke directed upwards from the window naturally rises along the window, and is pushed back into the room and stagnates near it, reducing the smoke removal effect.

Therefore, when the half-right angle fenestration becomes a right angle (90 degree) fenestration and the window becomes horizontal, there will be no obstructions in the smoke exhaust path and a smoke exhaust effect can be expected, but the irreversible chain in the opening means described above There is a limit to the movement of protruding (pushing up) the window, and the window can only be opened up to a semi-right angle.In other words, when the chain is wound, there is no limit like a general chain, but when it becomes a straight line in order to push an object forward. (during fenestration) becomes a rigid rod-like body and curves only slightly overall, so the limit is to make the fenestration elevation angle a semi-right angle, and beyond that, resistance will occur everywhere and the chain will not advance and open. Windows become inoperable.

Next, in the well-known auto-pinge or stay damper, which is a bullet with a telescoping rod, the rod and cylinder must be particularly extended in order to expand the fenestration elevation angle to a right angle, and as a result, the scenery around the window is simply spoiled. However, when the window is closed, the force that compresses the rod is significantly greater than when the window is partially opened, and as the window becomes larger, an even stronger compression force is required, making it difficult to close the window with manual operation due to overload. Become.

In other words, in the conventional technology, the limit of window opening ability was half-right-angle opening, which partially obstructed the path of smoke exhaust, making it inefficient to quickly exhaust toxic smoke outside.Therefore, laws and regulations were introduced to minimize the risk of personal injury. Since the functional requirements for a manual window opening/closing device (smoke exhaust device) as defined in the above definition were not met, improvements were requested from various quarters.

The purpose of this invention is to provide a smoke evacuation device that eliminates the above-mentioned deficiencies, improves the ventilation effect during smoke evacuation, improves the evacuation effect, and allows windows to be opened very quickly and simply using a manual force appropriate to the law. shall be.

An embodiment in which this invention is implemented as a smoke evacuation device attached to an opening type window will be described based on the drawings.
It is as follows.

The first diagram shows an example of a case where a device for expanding the fenestration elevation angle is arranged in conjunction with the window W and the mullion B of the opening in the smoke evacuation system, and is configured so that the fenestration can be made at right angles to the wall surface. has been done.

In detail, above the mullions B and B, which are the left and right frames of the opening H, there is a fan-shaped cam 1 and a guide, each of which has an arcuate surface 3 with each corner α of each side wall 2 _A 2 _B at a right angle. A symmetrical frame 7 on which wheels 4 are pivoted at appropriate intervals is provided, and a roller is rotatably riveted to the tip of a flat bar-shaped arm 9 which is screwed to the fan-shaped cam 1. 8 is slidably fitted into the groove 11 of the guide rail 10 fixed to the vertical greens A, A of the other window W, and one end side of the stacked leaf spring 6, which is used as an essential component of this invention, is inserted into the fan-shaped cam. It is screwed onto the arcuate surface 3 of the window 1 and suspended in a meandering manner from the guide wheel 4 below to bias the window in the opening direction.

Each side wall 2 _A 2 _B of the upper fan-shaped cam 1, which is pivotally mounted 5 to the frame 7, comes into contact with the mullion B surface of the opening H each time the window W is opened or closed, and thus serves as a stopper.
If it is set to a right angle, the restoring action of the stacked leaf spring 6 will expand the fenestration range to the right angle of elevation, and when the window W is opened horizontally, the side wall _2B of the fan-shaped cam 1 will also rotate at a right angle to form the cubic B surface. When they come into contact with each other, both stop.

A screw shaft 12 and a locking screw 13 are screwed in advance to the side wall _2B near the arcuate surface 3 of the sector-shaped cam 1.
If a gap angle G is created between _B and the mullion B surface, the fan-shaped cam 1 will rotate upward at an angle equivalent to the gap angle G using the pivot point 5 of the pedestal 7 as a fulcrum, and will be engaged at the same time. Since the window is lowered by the gap angle G by operating the arm 9, the corner angle α of the fan-shaped cam 1 can be easily changed, and it can be easily used in a window opening/closing device for the sole purpose of ventilation. can.

Due to the characteristics of the stacked leaf spring 6, it is sufficient to leave a portion around the guiding wheel 4 at least about 1/3 turn (approximately 120 degrees) when the stacked leaf spring 6 is pulled out from its original shape to its maximum stroke. When the fenestration elevation angle is at right angles, there is sufficient margin for restoration, and it can be used with confidence.In addition, if the window becomes larger, the number of stacked leaf springs 6 can be increased each time, making it easy to change the specifications of the window. can be dealt with.

Next, the window closing means utilizes a well-known multiple pulley device,
A fixed pulley 15 and a cable fitting 16 are installed on the horizontal stile C of the opening H.
On the other hand, a plurality of movable pulleys 17, 17 are provided at the lower edge D of the window.
from the winding device 20 of the wire 18, through the idler 19, from the fixed pulley 15, through the plural movable pulleys 17, 17, until it is fixed to the cable stopper 16,
If the wire 18 is stretched, the pulling force of the wire will be reduced due to the operating principle of a double pulley.

Note that the opening biasing force when opening the window is buffered by a speed governor (none of which is shown) attached to the winding drum of the wire 18 in the winding device 20. Since no shock is generated at the moment when the side wall 2 _A contacts the side of the mullion B, the window can be opened extremely safely.

The smoke evacuation device according to the present invention has the above-described configuration, and when opening the smoke evacuation device, first, by pressing the release button 21 of the winding device 20, the tension of the wire 18 that maintains the window closed is released. At the same time, the stacked leaf spring 6, which had been tensioned to close the window, causes the fan-shaped cam 1 and the arm 9 attached to the fan-shaped cam to pivot at right angles and return to their original shapes. Since the roller 8 attached to the tip of the roller 8 is in sliding contact with the groove 11 of the guide rail 10 on the side of the window W, the window W is opened at a right angle in the same way as the sliding movement of the sector cam 1, and is placed at right angles to the wall surface, that is, at a horizontal position. to stop at full throttle,
Ventilation from the opening H becomes extremely good.

When the smoke exhaust is finished, the window will be closed, but the winding device 2
When the wire 18 is wound by winding the rotating handle 0, as the window W slides downward, the guide rail 10 fixed to the window, the arm 9, and the fan-shaped cam 1 that engages the arm are interlocked, and the wire 18 is overlapped. The leaf spring 6 is indexed in a meandering manner and retains the animal power for returning to its original shape.

In such a case, for the entire length of arm 9, fan-shaped cam 1
Since the sliding radius of the arm 9 is quite short, the arm 9 acts as a lever and moves the fan-shaped cam 1 and the stacked leaf spring 6 without difficulty.

As explained above, this invention provides an additional member to the existing rotary window, which is pivoted on one side and serves as a smoke exhaust port, to easily convert it into a smoke exhaust device with a right-angle fenestration.
The ventilation during smoke evacuation is very good, and the evacuation effect is much improved compared to the conventional half-open window (45 degrees).Moreover, the labor-saving window closing torque is achieved by the double pulley device used. The interlocking arm is used as a lever, and the fan-shaped cam and stacked leaf springs are used to operate easily, and the opening biasing force is provided.In order to increase the size of the window, the opening force is increased by additionally stacking the stacked leaf springs. Closing the window also has various effects such as being able to be operated labor-savingly by increasing the lever force of the arm that follows the window.

[Brief explanation of drawings]

Fig. 1 is a front view showing the entire smoke evacuation device to which the present invention is applied, Fig. 2 is a perspective view showing the same half-open state, Fig. 3 is a rear perspective view when fully opened, and Fig. 4 is a fenestration. FIG. 5 is a side view taken along the line A-A in FIG. 1 showing the main parts, FIG. 5 is a closed window view of the same as the above, and FIG. A... Standing edge, B... Mulled, H... Opening, α
... Corner angle, β ... Fenestration elevation angle, 1 ... Fan-shaped cam, 2
_A ... Side wall, 2 _B ... Side wall, 4... Guide wheel, 6... Layered leaf spring, 7... Frame, 8... Roller, 9...
Arm, 10...Guide rail.

Claims (1)

[Claims] 1. In a smoke evacuation device that is attached to an opening type window that opens with an ejector and closes with a double pulley device,
Each guide rail 10 fixed to the window edge A, A side
One side of the arm 9 with the roller 8 fitted into the opening H is pivoted to the frame 7 disposed on the mullion B side of the opening H, so that the fenestration elevation angle β matches the angle α of another side wall 2A2B. A smoke evacuation device with a device for enlarging the elevation angle of an opening, characterized in that the fan-shaped cam 1 with a stacked leaf spring 6 configured as shown in FIG.