JPH0791919B2 - Window opener - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window opening and closing device, and more particularly to a device for opening and closing a high window such as a ventilation and smoke exhaust window by using a rope attached to its window frame.

[0002]

2. Description of the Related Art Conventionally, the most typical example of this type of window opening / closing device is described in Japanese Patent Laid-Open No. 184516/1989. Such a window opening / closing device has a handle box 1 as shown in FIG. 1, and a handle 2 for winding a rope R when the window is closed is attached to the handle box, and inside thereof, A drum for winding the rope,
There is built-in means for locking the wound rope, and further, a push button 3 for unlocking the rope to feed the rope when opening the window is provided.

In this type of window opening / closing device, quick ventilation and smoke emission are required from the viewpoint of safety, and therefore, a mechanism for promptly opening the window at the same time as pushing the push button 3 is required. As this mechanism, a damper 4 is provided between a window frame and a wall in a window opening / closing device for an outward tilting window or an inward tilting window as shown in FIG. When the push button is pushed, the drum is unlocked and the rope is sent out, the window collapses and opens due to its own weight, but the damper 4 gives the window a force to start falling. This helps to initiate a quick and smooth opening operation of the window.

On the other hand, in a window opening / closing device for a pulling window or a sliding window, a rail extending in a direction parallel to the pulling direction of the window is attached to the window frame of each window to move horizontally as the window is opened and closed. It is known that one end of the flexible cable is attached to the operation box so that the flexible cable can be rotated by the rotation of the handle, and the other end of the flexible cable is connected to the rail by a coupler. ing. This coupler is composed of a universal joint and a worm gear, whereby the axial rotation of the flexible cable is converted into horizontal movement of the rail to open and close the window.

Further, the main cable extending in the direction parallel to the direction in which the window is pulled meshes with the gear built into the handle box and is pushed and pulled by the rotation of the handle, and each sub-cable is It is known that a main cable and a sub cable are attached to a window frame of a window and connected by a connector. A gear is built in this connector, whereby the pushing and pulling force transmitted by the main cable is converted into a rotational movement of the gear. Further, by rotating the gear, the sub-cable is pushed out to open and close the window.

[0006]

As described above, in the conventional window opening / closing device for the pulling window or the sliding window, the window is manually opened and closed, and a mechanism for quickly opening the window is not provided. Not provided. Although there is a device that opens and closes the window electrically, it causes an increase in size and complexity of the device. Therefore, the present invention
An object of the present invention is to provide a window opening / closing device that can quickly open a window without increasing the size and complexity of the device.

[0007]

According to the present invention, the window is opened and closed by operating the winding handle to wind or unwind the first rope attached to the window frame on the drum. A window opening / closing device for a pull-down window or a pull-down window, which locks a first rope wound when closing the window, and unlocks the first rope. A second rope with one end attached to the window frame,
In a window opening / closing device having a tension unit that is connected to the other end of the second rope and constantly applies tension to the second rope in the window opening direction, the tip of the first rope is attached to a wall adjacent to the window. A turning pulley is attached to the window frame for inverting the orientation of the first rope, the first rope is directed to the winding handle through the turning pulley, and the tension unit is telescopically movable. A gas damper provided with a rod; a case containing the gas damper; a bracket for fixing the tip of the second rope attached to one end of the case on the side remote from the tip of the movable rod; First and third pulleys mounted adjacent to the tip of the movable rod,
A second pulley attached to the bracket; and a second rope entry / exit hole provided in the end wall of the case remote from the tip of the movable rod, wherein the second rope is inside the case. , Is doubled between the bracket and the three pulleys, and is turned from the bracket through the first, second, and third pulleys and then turned to the second rope access hole. A window opening and closing device is provided.

[0008]

When the window is open, the rope is unlocked, and most of the rope (hereinafter referred to as the first rope) is delivered from the drum. On the other hand, the rod of the tension unit is in an extended state, and the second rope is wound in the tension unit by a length that is at least twice the stroke length of the rod of the tension unit.

When the winding handle is operated to wind the first rope around the drum, the second rope comes out of the rope loading / unloading hole of the tension unit, and the rod is compressed accordingly. With the window completely closed, the first rope is wound around the drum and locked, while the rod of the tension unit is in the fully compressed state and the second rope is at maximum tension. Is given. When opening the window, the rope is released by the rope lock releasing means, and the rope is sent out from the drum.
At this time, the rod of the tension unit tries to quickly return to the extended state, so that the window is opened rapidly via the second rope.

[0010]

FIG. 2 is a perspective view of a window opening / closing device of the present invention. In FIG. 2, 1 is a handle box, 2 is a rope winding handle, 3 is a push button for releasing the rope lock, 12 is a cable for guiding the first rope, 13 is a cable fixing metal fitting, and 14 is a tip of the cable. Is a cable stopper that attaches to the wall adjacent to the window.

Reference numeral 15 denotes a turning pulley for reversing the direction of the second rope, which is attached to the wall opposite to the cable fitting 14 with the window interposed therebetween. Reference numeral 16 is a turning pulley for reversing the direction of the first rope, and 17 is a tension unit for applying tension to the second rope. 1
Reference numerals 8 and 19 denote first and second ropes, respectively, of which the material is a wire. 20 is a stopper for attaching the end of the first rope to the window frame adjacent to the window, 21 is a stopper for attaching the end of the second rope firmly, and 22 is for attaching the pulley for the first rope to the lower frame. It is a fastener.

FIG. 3 and FIG. 4 show details of the tension unit 17. The tension 17 has an elongated rectangular parallelepiped case 31, inside which a gas damper 32 is arranged. The gas damper 32 is provided with a rod 33, and the rod moves in the longitudinal direction of the case 31 so as to be able to expand and contract. Both ends of the case 31 in the longitudinal direction are cap 3
It is closed at 4, 35, and the cap 35 on the side opposite to the rod is provided with a hole 36 for the second rope to enter and exit.

Reference numeral 37 is a bracket for fixing the base portion of the gas damper 32 on the side opposite to the rod in the case,
The bracket 37 has a tip 19a of the second rope 19 attached thereto.
And a deflection pulley 38 for reversing the direction of the second rope. On the other hand, two pulleys 39 and 40 are coaxially attached to the tip of the rod 33 so as to face the rope tip 19a and the deflection pulley 38, respectively.

Next, the operation of the tension unit 17 will be described. FIG. 5 is a view showing a state where the window is opened, that is, a window opening state, and FIG. 6 is a diagram showing a state where the window is closed, that is, a window closing state. The rod 33 of the tension unit 17 is in the expanded state in the open window state and in the compressed state in the closed window state. The turning pulleys 39 and 40 are movable pulleys because they are attached to the ends of the expandable rod 33.
On the other hand, the turning pulley 38 is a fixed pulley because it is attached to the bracket 37 for fixing the gas damper.

The second rope having the tip end 19a attached to the bracket has a movable pulley 3 inside the case.
It is sent out from the rope entrance / exit hole toward the window frame through the fixed pulley 38 and the movable pulley 40. In this way, since the second rope is doubled so as to intersect along the diagonal line, the stroke of the rope provided by this tension unit is four times the stroke length of the rod. Therefore, the amount of movement of the window is four times the stroke of the rod. Since the stroke length of the rod is considered to be approximately 1/2 of the length of the case in the longitudinal direction, the amount of movement of the window is approximately twice the length of the case in the longitudinal direction.

Therefore, the tension unit can be miniaturized, and the restrictions on the installation place can be eased. In this embodiment, one fixed pulley and two movable pulleys are used. However, the rope may be turned only once by using only one movable pulley, and many pulleys may be provided. It may be configured to rotate in multiple directions. A well-known rope locking means, that is, a ratchet mechanism (not shown) disclosed in the above-mentioned JP-A-1-184516 is built into the handle box, and this ratchet mechanism is attached via the push button 3. By being urged, the lock of the first rope is released.

In the fenestration state, as shown in FIG. 5, the rod of the tension unit is in the extended state, and the second rope is wound into the tension unit by about twice the length of the tension unit. Has been. At this time, the lock of the first rope is released, and most of the first rope is sent out from the drum. When the take-up handle is operated and the first rope is taken up on the drum, the second rope is
The rope goes out of the rope loading / unloading hole of the tension unit, and the rod is compressed accordingly.

In the closed window condition with the window completely closed, as shown in FIG. 6, the first rope is wound around the drum and locked, while the rod of the tension unit is in the fully compressed state. And the maximum tension is given to the second rope. When opening the window, the rope is released by the rope lock releasing means, and the rope is sent out from the drum. At this time, the rod of the tension unit tries to quickly return to the extended state, so that the window is opened rapidly via the second rope.

[0019]

According to the present invention, a window opening / closing device for a pulling window or a sliding window is realized by combining a tension unit, which is very compact in comparison with the amount of movement of the window, with known rope lock releasing means. Also in this case, the window can be opened quickly to improve the exhaust smoke function without inviting an increase in size and complexity of the device itself. Especially, in the tension unit, since the rope is doubled using three pulleys, the stroke of the rope can be increased without increasing the size of the tension unit, and the window can be quickly opened. Can be achieved. Further, according to the present invention, when the window is closed, the rope is wound up through the turning pulley, so that the force applied to the winding handle is small, and thus the winding force is small.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a conventional window opening / closing device.

FIG. 2 is a perspective view showing an embodiment of a window opening / closing device of the present invention.

FIG. 3 is a partially cutaway plan view of the tension unit of the present invention.

FIG. 4 is a partially cutaway front view of the tension unit of the present invention.

FIG. 5 is a schematic plan view showing a tension unit in a window opening state.

FIG. 6 is a schematic plan view showing a tension unit in a closed window state.

[Explanation of symbols]

 1 Handle Box 2 Handle 3 Push Button R Rope 12 Cable 13 Cable Fixing Bracket 14 Cable Stopping Bracket 15, 16, 38, 39, 40 Turning Pulley 17 Tension Unit 18 First Rope 19 Second Rope 20, 21, 22 Stopping Metal fittings 31 Case 32 Gas damper 33 Rods 34, 35 Cap 36 Rope entry / exit hole 37 Bracket

Claims (1)

[Claims] 1. A pulling-type window or a sliding-type window for opening and closing the first rope attached to the window frame by operating the winding handle to wind or unwind the first rope on the drum. A window opening / closing device, wherein a means for locking the first rope wound when closing the window, a means for releasing the locking of the first rope, and a second end having one end attached to the window frame And the other end of the second rope, the window opening and closing device having a tension unit for constantly applying a tension in the window opening direction to the second rope, wherein the tip of the first rope is A deflection sheave attached to an adjacent wall, for inverting the orientation of the first rope, is attached to the window frame, the first rope is directed through the deflection sheave to a winding handle, the tension unit comprises: Expansion and contraction A gas damper provided with an existing movable rod, a case containing the gas damper, and a bracket for fixing a tip end portion of a second rope attached to one end in the case remote from the tip end portion of the movable rod. A first pulley and a third pulley attached to the tip end of the movable rod, a second pulley attached to the bracket, and an end wall of the case remote from the tip end of the movable rod. A second rope entrance / exit hole provided, wherein the second rope is doubled in the case between the bracket and the three pulleys, and the first and the second ropes are extended from the bracket. The window opening / closing device, wherein the window opening / closing device is turned to the second rope entrance / exit hole after being inverted through the second and third pulleys.