JPS6121283A - Exhaust apparatus with apparatus for enlarging window opening elevation - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 that eliminates ventilation resistance.

Conventionally, smoke evacuation devices configured to be attached to an opening type window that is pivoted at the upper end and opened by a protrusion device have been equipped with an irreversible chain or a telescopic rod bullet using hydraulics, pneumatics, etc. as the opening means. An attempt was made to open the windows at an approximately half-right angle (45 degrees) in order to exhaust toxic gas (smoke) in the event of a fire, but the sloping window blocked the path of the smoke, so the window was opened to the side of the window. Part of the smoke that goes towards the window tends to rise along the window, and is pushed back into the room and stagnates near it, reducing the smoke exhaust effect.

Therefore, when a half-right angle fenestration changes to a right angle (90 degrees) fenestration and the window becomes horizontal, there will be no obstructions in the smoke exhaust path and a smoke exhaust effect can be expected. There is a limit to the movement (pushing up), and the window can only be opened up to a semi-right angle. In other words, when winding the chain, there is no limit like a partial chain, but when it becomes a straight line to push an object forward ( (during fenestration) becomes a rigid rod-like body that curves only slightly overall, so the limit is to make the fenestration elevation angle a semi-right angle, and beyond that, resistance occurs everywhere and the chain will not advance and the fenestration will not progress. It becomes impossible.

Next, in the well-known auto-hinge or stay damper, which is a telescoping rod, the rond 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 rondo 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 force operation due to overload. becomes.

In other words, in the conventional method, the limit of fenestration ability was half-right-angle opening, which partially obstructed the path of smoke exhaust, making it inefficient to quickly exhaust toxic smoke outside the room. Since it did not meet the functional requirements for a manual window opening/closing device (smoke exhaust device) as required by law, 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 the present invention is implemented as a smoke evacuation device attached to an opening type window will be described below with reference to the drawings.

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, so that the fenestration can be made at right angles to the wall surface. It is composed of 扛.

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 l and a guide wheel 4, each of which has an arcuate surface 3 formed by making the angle α of each side wall 2A and 2B a right angle. A symmetrical pedestal 7 is provided with the cams 5 pivoted at appropriate intervals, and a roller is rotatably riveted to the tip of a flat bar-shaped arm 9 which is screwed onto the fan-shaped cam 1. 8 is slidably fitted into the groove 11 of the guide rail 10 fixed to the upright edges 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 shaped like the sector. It is screwed onto the arcuate surface 3 of the cam l and suspended in a meandering manner from the guide wheel 4 below to bias the window in the opening direction.

2 people on each side wall of the upper fan-shaped cam l which is pivotally mounted 5 on the pedestal 7
Since B comes into contact with the mullion 8 faces of the opening (■) each time the window W is opened and closed, and acts as a stopper, if the angle α is set at a right angle, the restoring action of the stacked leaf spring 6 will reduce the fenestration range. When the window W is expanded to a right elevation angle and the window W is opened horizontally, the side wall 2B of the fan-shaped cam l also rotates at a right angle and comes into contact with the mullion 8 surface, and both stop.

A spiral shaft 1 is attached to the side wall 2B near the arcuate surface 3 of such a fan-shaped cam l.
2 and set screws 13 in advance to create a gap angle G' between the side wall 2B and the eight mullioned faces, the sector-shaped cam l will form the gap angle G with the five pivot points of the frame 7 as branches. Since the window rotates upward at the same angle and at the same time operates the engaged arm 9, the window is lowered by the gap angle G.
As a result, it is possible to easily change the angle α of the angle .alpha., so that it can be fully used in a window opening/closing device for the sole purpose of ventilation.

Due to its characteristics, the stacked leaf spring 6 rotates at least about 178 times around the guide wheel 4 when pulled from its original shape to the maximum stroke.
(approximately 120 degrees), all you have to do is leave the hooking part, so if the fenestration elevation angle is at right angles, as in the American invention, there is enough room for restoration, and it can be used with confidence, and if the window becomes larger, the It is only necessary to increase the number of stacked leaf springs 6 each time,
Changes in window specifications can be easily handled.

Next, the window closing means utilizes a well-known multiple pulley device, and the opening ■
A fixed pulley 15 and a fastener 16 are installed on the horizontal stile C, and a plurality of movable pulleys 17 are installed on the lower edge of the window. fixed pulley 1
If the wire 18 is stretched from the wire 18 through a plurality of moving pulleys 17 and 17 until it is fixed to the metal fitting 16, the pulling force of the wire can be reduced due to the principle of operation of a double pulley.

The opening biasing force at the time of window opening is provided by a speed governor (none of which is shown) attached to the wire 18 winding drum in the winding device 20.
Since the opening of the window is buffered, there is no impact at all when the window opening is stopped, that is, at the moment when the side wall 2A of the fan-shaped cam 1 comes into contact with the mullion B surface, so that the window can be opened extremely safely.

The smoke evacuation device according to the present invention has the above-described configuration, and the opening for smoke evacuation is first opened by opening the opening button 21 of the winding device 20.
When pressed, the tension and force of the wire 18 that was keeping the window closed is released and relaxed, and at the same time, the stacked leaf spring 6, which had been tensioned until then, is moved to the fan-shaped cam l and the core cam. Since the anchoring arms 9 are both vibrated at right angles and returned to their original shapes, the roller 8 anchored to the tip of the arm 9 is in sliding contact with the groove 11 of the guide rail 10 on the window W side, so that the window Similar to the vibration of the sector-shaped cam L, W is opened at a right angle and stops fully opened at right angles to the wall surface, that is, at a horizontal position), L, and the ventilation from the opening (2) is extremely good.

When the smoke exhaust is finished, the window is closed, but if the rotating handle of the winding device 20 is wound to wind the wire 18, the guide rail lO and the wire 18 fixed to the window will move as the window W descends and vibrates. Interlocking the arm 9 and the fan-shaped cam l that engages the arm,
The stacked leaf spring 6 is pulled in a meandering manner to save labor for returning to its original shape.

In such a case, since the vibration radius of the sector cam 1 is quite short with respect to the entire length of the arm 9, the arm 9 acts as a lever and causes the sector cam 1 and the stacked leaf spring 6 to follow easily.

As explained above, this invention enables the smoke exhaust system to be easily modified into a right-angled window smoke exhaust system by installing an additional member on the existing rotary window that is pivoted on one side and serving as the smoke exhaust port. The ventilation of the window is very good, and the evacuation effect is much improved compared to the conventional half-opening (45 degrees) window.Furthermore, the window closing torque, which is labor-saving due to the double pulley device, leverages the arm that works with the window. As a result, the fan-shaped cam and stacked leaf springs are used to operate easily and store the force for opening the window.However, when the window is made larger, the window opening force is increased by the additional stacking of the stacked leaf spring, and the closing of the window also follows the window. It has various effects such as labor-saving operation by increasing the leverage of the arm.

[Brief explanation of the drawing]

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. 1st part showing the main part of time
FIG. 5 is a closed window view of the same as above, and FIG. 6 is a separate application view of the fan-shaped cam. A... Vertical edge B... Mullet ■... Opening α... Corner angle β... Fenestration elevation ■... Fan-shaped cam 2 people... Side wall 2B... Side wall 4...・・Guide car 6・Stacked board pie・ 7・・
Frame 8...Roller 9 River arm 10...Guide rail □l

Claims (1)

[Claims] In a smoke evacuation device that is attached to an opening type window that opens with a protrusion device and closes with a double pulley device, the raised edges A and A of the window
One side of the arm 9 with rollers 8 fitted into each guide rail 10 fixed on the side is pivoted to the mullion B of the opening H, and the frame 7 disposed on the B side of another side wall 2_A2_B. The opening is characterized in that it is engaged with a sector-shaped cam 1 with stacked leaf springs 6 configured such that the fenestration elevation angle β matches α, and further the stacked leaf springs 6 are suspended in a meandering manner on a lower guiding wheel 4. Smoke evacuation device with window elevation angle magnification device.