Patent Grant
7669634
The present invention relates to a roll screen door capable of opening/closing by horizontally pulling a net and more specifically to a horizontal-pulling roll screen door in which right/left sides of opening/closing is made easily changeable in a net of a horizontal-pulling screen door constructed to be wound up by an urging force of a spring around a winding shaft extended between a side frame and a movable stile in a screen door frame and supported by the movable stile.
A horizontal-pulling roll screen door in which a net is extended capable of being opened/closed horizontally to be wound up by an urging force of a spring around a winding shaft supported rotatably by a movable stile between a side frame and a movable stile in a screen door frame is publicly known as disclosed in Japanese Unexamined Patent Application Publication No. 2002-168070, for example.
Also, when a right/left sides of a horizontal-pulling screen door are to be set or changed according to the door of a building opening, it has been known that the screen door is reversed front and back with the vertical orientation unchanged or upside down with the horizontal orientation unchanged.
However, in many of the horizontal-pulling roll screen doors in the above type of winding up a net around a winding shaft of the movable stile, the front and back appearances are not symmetrical or the shapes of caps mounted to the upper and the lower ends of the movable stile are different, and their left/right sides can not be changed only by reversing the screen door front and back or upside down. Then, some disassembly and reassembly are needed to make the right/left sides changeable. Moreover, since the winding shaft for winding up the net by the urging force of the spring is housed in the movable stile, the urging force of the spring might be released at disassembly, which involves danger for those not skilled.
Moreover, for the conventional horizontal-pulling roll screen door, if an external force such as wind acts on the net in the net extended state, the winding shaft is rotated by the external force against the urging force of the spring in the direction to feed out the net remaining therein. As a result, the net is extended in the arc state and removed from the upper and the lower lateral frames of the screen door, and insect proof performance can not be necessarily kept favorably, which is a problem. In order to solve this problem, it is preferable to add winding-shaft fixing means for disabling rotation of the winding shaft when extending the net, but when the right/left sides of the above net opening/closing is to be changed, the change of the right/left sides should be able to be changed, including this fixing means.
An object of the present invention is to solve the above problem and to provide a horizontal-pulling roll screen door in which a net wound up by an urging force of a spring around a winding shaft supported by a movable stile between a side frame and the movable stile in a screen door frame in which the right/left sides can be set or changed easily and safely.
Another object of the present invention is to provide a horizontal-pulling roll screen door in which the right/left sides can be set or changed easily and safely even by a layman without using any special tools.
Another object of the present invention is to provide a horizontal-pulling roll screen door to which winding shaft fixing means is added for suppressing arc-state extension of the net due to action of an external force such as wind on the net in the net extended state, the right/left sides of opening/closing of the net can be changed, including the fixing means.
In order to solve the above problem, the present invention is characterized in that, in a horizontal-pulling roll screen door in which a net extended between a side frame and a movable stile in a screen door frame is wound up by an urging force of a spring around a winding shaft accommodating the coil-state winding spring therein rotatably supported by the movable stile so that the net can be opened/closed by horizontal pulling, the movable stile has a first and a second caps rotatably supporting the winding shaft detachably mounted at both an upper and a lower ends of a case accommodating the winding shaft, at least the first cap mounted at the upper end of the case is slidably supported by an upper rail of the screen door frame, and the movable stile except the first and the second caps, the net wound up around the winding shaft and the side frame fixed to the other end of the net are constructed so as to form an outer shape in substantially vertical symmetry so that the first and the second caps can be replaced by each other, the winding spring accommodated inside the winding shaft has its one end connected to the winding shaft and the other end fixed to an intermediate support member unrotatably and removably connected to the first or the second cap, and a lock mechanism is provided between a connecting cylindrical shaft connected to one end of the winding shaft and the intermediate support member for temporarily disabling their relative rotation.
In the horizontal-pulling roll screen door of the present invention having the above construction, since the outer shape of the movable stile including the first and the second caps, the net wound up around the winding shaft in the movable stile and the side frame fixed to the net end are made in the substantially vertical symmetry so that the first and the second caps at the both ends of the movable stile can be replaced by each other, the right/left sides in opening/closing of the screen door which can be opened/closed by horizontal pulling of the net wound up by the urging force of the spring around the winding shaft supported by the movable stile can be freely set or changed according to an opening of a door of a building, and there is no need to use a special tool. Moreover, the net is wound up by the urging force of the spring around the winding shaft supported by the movable stile, but since the winding shaft is prevented from being rotated by holding the urging force of the spring in the locked state by the lock mechanism provided between the intermediate support member and the connecting cylindrical shaft, even if the first and the second caps are removed from both ends of the movable stile in the state where a rotational urging force is accumulated in the winding spring, the net is not wound up. Therefore, installing the screen door or changing the right/left sides can be done safely and easily by switching the first and the second caps at both ends of the movable stile with each other.
When the lock mechanism is brought into the non-locked state, the rotational urging force of the winding spring acts on the winding shaft to wind up the net, and when the movable stile is moved in the direction to withdraw the net, the rotational urging force is accumulated in the winding spring.
In the preferred embodiment of the roll screen door of the present invention, the lock mechanism is constructed so that a lock lever is rotatably supported by a support pin in an opening provided at the connecting cylindrical shaft and an engagement portion is provided at the base end of the lock lever to be engaged with any of a large number of recess portions provided on the outer circumference of the intermediate support member by rotational movement of the lever to a standing locked position. By this lock lever, the rotation can be locked by the connecting cylindrical shaft and the winding spring of the winding shaft at the locked position. Moreover, since the lock mechanism can be easily brought into the locked state or the locked state can be released only by rotationally moving the lock lever, the right/left hand of the horizontal-pulling roll screen door can be changed easily and safely even by a layman without requiring any special tools.
In the preferred embodiment of the horizontal-pulling roll screen door of the present invention, a cylindrical member provided with a pinion rotated in conjunction with the winding shaft is supported by at least one of the first and the second caps, and a rack meshed with the pinion and rotating the winding shaft in the feed-out direction of the net is provided on a face opposite to the pinion in the lateral frame of the screen door frame at a portion opposite to the pinion including the fully extended state or a state immediately before the fully extended state of the net.
By this construction, when the movable stile is at the position where the net is fully extended, the pinion fixed to the winding shaft is meshed with the rack of the lateral frame of the screen door frame. Thus, even if an external force such as wind acts on the net, rotation of the winding shaft in the net feed-out direction pulled by the net can be suppressed. It is preferable that the outer diameter of the pinion is formed larger than the outer diameter of the winding shaft in order to keep the extended net in the tensioned state as much as possible.
Moreover, in the preferred embodiment of the present invention, the cylinder member is constructed by the pinion and a fitting portion integral with the pinion, and the fitting portion is constructed so that it is unrotatably and removably connected to the connecting cylindrical shaft connected to the winding shaft and the other end of the winding shaft, respectively. By this construction, in the horizontal-pulling roll screen door in which winding shaft fixing means for suppressing extension of the net in the arc-state due to action of the external force such as wind on the net in the net extended state, that is, the pinion and the rack are provided, the right/left sides in opening/closing of the net can be changed including the fixing means.
Also, in the preferred embodiment of the horizontal-pulling roll screen door of the present invention, the first cap has a head portion to which the track roller is rotatably mounted, the connecting cylinder portion detachably connectable to either an upper and a lower ends of a case of the movable stile whose sectional shape is constant, a shaft support portion inward the connecting cylinder portion for rotatably supporting the winding shaft or a member connected to it, and a tip end shaft portion in the spline shaft state extending from the tip end of the shaft support portion, and the second cap has a connecting cylinder portion which can be detachably connected to either the upper and the lower ends of the case, a shaft support portion inward in the connecting cylinder portion for rotatably supporting the winding shaft or a member connected to it, and a tip end shaft portion in the same spline shaft state as the tip end shaft portion in the first cap extending from the tip end of the shaft support portion, and each of the tip end shaft portions of the first and the second caps are constructed unrotatably and capable of removal with respect to the intermediate support member. As a member rotatably supported by the shaft support portions of the both caps and connected to the winding shaft, a cylinder member is usually used having a pinion and a fitting portion integral with it, in which the fitting portion is connected to the winding shaft through the connecting cylindrical shaft.
Moreover, in the present invention, it is preferable that by providing a recess groove fitted with a projection streak provided on the surface of the fitting portion of the cylinder member inside the end of the connecting cylinder shaft, they are connected unrotatably and removably, and the same recess groove as the end inner surface of the connecting cylinder shaft is provided on the inner surface of the end of the winding shaft so that it can be connected to the fitting portion of the cylinder member unrotatably and removably and the fitting portion of the cylinder member and the winding shaft are supported rotatably and removably with respect to the shaft support portion of the second cap.
The attached drawings show an embodiment of the horizontal-pulling roll screen door according to the present invention.
This horizontal-pulling roll screen door is, as shown in
As the screen door frame to be mounted to the building opening frame 2, at least an upper rail 4 as a lateral frame mounted to the opening upper frame 2c of the building opening frame 2 and a side frame 6 fixed to one opening side frame 2a to hold one end of a net 8 of the roll screen door are provided. Also, a winding shaft 13 for winding up the other end of the net 8 is housed inside a case 10a of a movable stile 10, and the winding shaft 13 is rotatably supported between a first and a second caps 11, 12 provided at an upper and a lower ends of the case 10a of the movable stile 10. The case 10a has an opening 10b having a constant sectional shape for leading out or the like of the net 8 on the building opening frame 2 side. This movable stile 10 is suspended movably on a rolling face 4a provided on the upper rail 4 through a pair of track rollers 11b rotatably mounted to a head portion 11a of the first cap 11.
A side frame opposite to the side frame 6 may be provided on the opening side frame 2b of the building opening frame 2, but as shown in
The horizontal-pulling roll screen door is, as shown in
When the construction of the movable stile 10 is described in more detail, the first cap 11 has, as shown in
Also, the second cap 12 has a connecting cylinder portion 12b standing from a bottom portion 12a and capable of being detachably mounted to either of the upper and the lower ends of the case 10a of the movable stile 10 as with the connecting cylinder portion 11c of the first cap 11, a shaft support portion 12c located inwards from the connecting cylinder portion 12b and rotatably supporting the winding shaft 13, and a tip end shaft portion 12d in the spline shaft state protruding from the tip end of the shaft support portion 12c. The circumferential face shape of this tip end shaft portion 12d is the same as that of the tip end shaft portion 11e in the first cap 11.
In this second cap 12, its connecting cylinder portion 12b is fitted to the case 10a with a variant section, and the rotation around the center axis is suppressed similarly to the first cap 11, but as shown in
When the case 10a of the movable stile 10 is to be reversed upside down to change the right/left sides in opening/closing of the screen door, it is necessary to attach the guide member 10c to the other end of the case 10a, and thus, it is necessary that mounting of the guide member 10c to the case 10a should be detachable. The guide member 10c may be provided at the second cap 12. In this embodiment, the lower end of the net 8 is also brought into contact with the side face of the sash lower frame 3 similarly to the movable stile 10 for guiding.
The first cap 11 and the second cap 12 can be replaced by each other, but as can be seen from
As clearly shown in
That is, in the connecting cylindrical shaft 20, as shown in
To the tip end shaft portion 11e in the spline shaft state extending from the tip end of the shaft support portion 11d in the first cap 11, as shown in
In this way, since the other end of the winding spring 14 having one end fixed to the first cap 11 through the intermediate support member 21 is connected to the winding shaft 13 through the spring receiver 24, when the rotational urging force is accumulated in the winding spring 14, the urging force acts on the winding shaft 13 all the time and if the net 8 is not held against the urging force, the net 8 is wound up.
Also, the projection streak of the fitting portion 18b in the cylinder member 18 can be fitted in the recess groove 13a on the inner circumferential face in the shaft end located at the lower end of the winding shaft 13 in the state of
The connecting cylinder shaft 20 has, as shown in
In the lock lever 27, as shown in
In the winding shaft 13, the right/left sides in opening/closing are changed by reversing it upside down, but as can be seen from the above mentioned, the internal mechanism of the winding shaft 13 is not in the vertically symmetrical shape. However, the side frame 6 fixed to the movable stile 10 except the first and the second caps 11, 12, the net 8 wound up by its winding shaft 13 and the end of the net 8 may be constructed with the outer shape in the substantially vertical symmetry so that the first and the second caps 11, 12 can be replaced by each other and the function can be exerted even if the internal mechanism of the winding shaft 13 is reversed upside down and thus, the right/left sides can be changed by reversing of the winding shaft without any trouble.
As can be seen from the above mentioned, in the fully extended state of the net 8, since the urging force is accumulated in the spring 14 incorporated in the winding shaft 13 to extend the net 8, the net 8 is held in the tension state by the maximum urging force of the spring 14, but if the maximum urging force is increased too much, it could incur a problem in operationality, while if the urging force is too small, the net 8 would be expanded to the downwind side by an external force such as wind acting on the net 8.
Then, in order to solve the problem, as shown in
Therefore, at the time when the net 8 is almost wound up by the winding shaft 13, the pinion 18a of the cylinder member 18 is meshed with the rack 30, and after that, the winding shaft 13 is driven by the pinion 18a meshed with the rack 30.
When a range is taken to some degree to restrict the rotation of the winding shaft 13 by meshing between the rack 30 and the pinion 18a, if there is a difference between the outer diameter of the pinion 18a and the winding diameter of the winding shaft 13, there would be a difference generated between the movement amount of the winding shaft 13 and the feed-out amount of the net 8 within the meshing range. That is, if the diameters of the both are substantially the same, the movement amount of the winding shaft 13 and the feed-out amount of the net 8 are also substantially the same and no fluctuation occurs in the tension state of the net 8. However, if the pinion 18a is formed with a diameter larger than the winding shaft 13, the feed-out amount of the net 8 becomes smaller than the movement amount of the winding shaft 13, and the net 8 is gradually brought into the tension state. Therefore, the diameter of the pinion and the length of the rack 30 should be set considering the final tension state of the net 8. For example, if it is so set that a portion to be excessive sag of the net 8 is wound up while the pinion 18a and the rack 30 are moved in the meshed state, the net 8 can be brought into the tension state without sag when the movable stile 10 has reached the fully extended end of the net 8.
Reference numeral 35 in
The horizontal-pulling roll screen door having the above construction is capable of setting or changing the right/left sides in opening/closing according to the door of the building opening, and when the right/left sides are to be changed from the state shown in
After that, as shown in
Then, as shown in
Therefore, the horizontal-pulling roll screen door having the above construction is capable of work to replace the first and the second caps 11, 12 at the both ends of the movable stile 10 and reverse them upside down easily and safely, by which the right/left sides of the horizontal-pulling roll screen door can be changed easily and safely without using a special tool.
In the horizontal-pulling roll screen door on the above embodiment, the upper rail 4 and the side frame 6 constituting the screen door frame are mounted to be located outside the building opening frame 2, and the lower end of the movable stile 10 is slidably engaged with the lower rail 3a provided at the sash lower frame 3 through the guide member 10c. At the same time, the lower ends of the net 8 and the movable stile 10 are brought into contact with the side face of the lower frame 3 for guiding, and with this construction, the net 8 and the movable stile 10 can be guided with a simple and inexpensive construction using the sash lower frame 3 as it is.
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2004/008326 | 6/14/2004 | WO | 00 | 12/12/2006 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2005/121487 | 12/22/2005 | WO | A |
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