JP2521785Y2 - Screen opening and closing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for opening and closing a screen or other screen provided at an opening of a building for insect control, light shielding, blindfolding, and the like.

[0002]

2. Description of the Related Art As a screen to be installed at the opening of a building for the purpose of insect repellent, shading, blindfolding, etc., a pleat is used. A screen opening / closing device that can be opened / closed at any time has already been developed. Such a screen is opened and closed by operating a movable frame provided at the end of the screen, but if the attitude of the movable frame is kept constant and is not accurately translated, a smooth opening and closing operation is performed. Can not do. Therefore, it is desired that the posture of the movable frame be kept constant by simple means.

[0003]

A technical problem to be solved by the present invention is to provide a screen opening / closing apparatus which opens and closes a screen which can be expanded and contracted in an accordion style by applying a large number of pleats and bending. By applying a biasing force in the opening or closing direction to the movable frame attached to one end of the
At the same time as improving its operability, it stabilizes the magnitude of the operating force and the direction of action as compared to manual operation to maintain the stability of the posture during parallel movement, and effectively utilizes a part of the mechanism. It is another object of the present invention to provide a screen opening / closing device that provides a buffering action at the end of opening and closing.

[0004]

A screen opening and closing device according to the present invention for solving the above-mentioned problems is obtained by providing a plurality of pleats in a storage case constituting one side frame of a screen frame and bending the storage case. A screen opening / closing device that fixes the base end of a screen that has been made expandable and contractible in an accordion style, attaches a movable frame for opening and closing operation to the tip of the screen, and makes the movable frame slidable along the screen frame. One end of a plurality of tension cords is fixed to the movable frame, and the other ends of the tension cords are wound around a diverter provided on a side frame of the screen frame to hang down in the side frame, and a weight is attached to a lower end thereof. By providing a biasing force in the opening or closing direction to the movable frame by mounting, when the weight reaches the descending position near the end of the opening or closing, a buffering means is provided to provide resistance to the descending operation. It is an feature.

[0005] As the buffer means in the screen opening / closing device, a spring or an elastic member for applying an urging force in a direction to stop the weight when the weight reaches the descending position near the end is provided. It is possible to provide a guide cylinder that raises and lowers the inside with the piston as a piston, and provides a leakage gap for leaking the pressurized air in the pressure chamber that raises the internal air when the weight reaches the lowering position near the end. it can.

In the above screen opening / closing device, a part of a plurality of tension cords, one ends of which are fixed to a movable frame, is wound around a deflecting member provided on one side frame of the screen frame. After guiding the movable frame through the inside of the frame to the opposite side of the moving direction, the other end is fixed to another part of the movable frame, thereby forming a parallel movement mechanism for restricting the posture of the movable frame. The hanging string branched from the up-and-down tension string is suspended in the side frame, and the weight is attached to the lower end thereof, so that the movable frame can be provided with an urging force in the opening or closing direction.

[0007]

In the above-mentioned screen opening / closing device, when the acting force of the weight acts in the opening direction of the screen, when the latch or the like is removed in the closed state, the acting force of the weight acting on the movable frame is removed. When the weight is applied in the closing direction of the screen,
When the latch is removed in the open state, the screen is automatically closed by the action of the weight acting on the movable frame. In these cases, the acting force of the weight acts on a plurality of points of the movable frame via a plurality of tension cords, and always acts on the movable frame in a substantially constant state. It can be automatically closed, improving operability.

On the other hand, the movable frame is manually opened and closed in the direction in which the movable frame is opened or closed in opposition to the acting force of the weight. In this case, the movable frame is actuated against the acting force of the weight. To move the frame, there is little room to apply a force that destabilizes the posture of the movable frame. Therefore, the magnitude of the operation force and the direction of action are constant, and the movable frame can be operated relatively stably. it can. Also, when the weight that applies the urging force in the opening or closing direction to the movable frame reaches the descending position near the end,
Since the buffer means for providing resistance to the lowering operation is provided, a buffer function can be provided at the end of opening and closing by simple means. Furthermore, if a parallel moving mechanism is attached and the posture of the movable frame is restrained by the string, it is possible to automatically open or close using the string.

[0009]

1 to 3 show an embodiment of a screen opening and closing device according to the present invention. The screen opening and closing device of this embodiment is such that the screen 10 is installed in an opening of a building as an accordion-type openable and closable device. The screen 10 includes a net suitable for insect repelling, a net or sheet having a good light-shielding property, and a blindfold. It can be formed of a suitable material such as a net or a sheet suitable for the application. The screen 10 is provided with a large number of pleats and alternately bends in the opposite direction, thereby making the screen 10 expandable and contractible in an accordion style, and can be opened and closed by folding. The screen frame that holds the screen 10 so as to be freely opened and closed connects the upper frame 11 and the lower frame 12, the screen storage case 13 constituting one side frame, and the side frame 14 facing the same. And fixing it to a mounting frame around the opening of the building.

As shown in FIG. 2, the storage case 13 which forms one side frame of the screen frame has a screen storage portion 16 for storing the folded screen 10, and the screen 10 which can be extended and contracted in an accordion style. Is fixed to the inner bottom of the screen housing portion 16. Further, the upper frame 11 is provided at the tip of the screen 10.
And a movable frame 18 for opening and closing operation, which is slidably held along the lower frame 12 in the left and right direction. This movable frame 18
Is formed so as to cover the storage case 13 when the screen 10 is opened, so that the screen 10 is completely stored in the storage case 13 and the movable frame 18.

As shown in FIG. 1, one end of a plurality of tension cords 20a to 20d is fixed to the movable frame 18. Of these tension cords, the other tension cords 20b to 20d except for the tension cord 20a located at the upper end are wound around the deflecting elements 21b to 21d attached to the storage case 13, and
3 and wound around the diverter 22 arranged at the upper end of the storage case together with the upper-side tension cord 20a, and then collectively tie those tension strings at the binding portion 23 and hang down the inside of the storage case. The weight 24 is attached to the lower end. Therefore, the biasing force in the opening direction is applied to the movable frame 18 by the weight 24.

A guide tube 25 for guiding the lifting and lowering of the weight 24 is provided in the storage case 13. When the weight 24 reaches the lowering position near the end of the open position, resistance is given to the lowering operation. A buffer means 26 is provided. In FIG. 1, a spring 27 for applying a biasing force in a direction to stop the weight 24 when the weight 24 reaches the descending position near the end and a sponge-like elastic member 28 are provided as the buffering means 26. Further, the lower part of the guide cylinder 25 which raises and lowers the inside using the weight 24 as a piston is defined as a pressure chamber 30.
When the weight reaches the descending position near the end, the air inside the pressure chamber is pressurized, and the structure of the air cushion in which the pressurized air is leaked from the leak gap 31 is shown. It is not necessary, and any means can be used alone or in combination. The leak gap 31 does not need to be provided as a hole as illustrated, and can be replaced by a gap between the weight 24 and the guide cylinder 25, for example.

In the drawings, reference numerals 33 and 34 denote latches for holding the movable frame in the closed position, and reference numeral 35 denotes rolling wheels for facilitating sliding of the movable frame 18. Further, in this embodiment, the urging force in the opening direction is applied to the movable frame 18, but the urging force in the closing direction is applied to the movable frame by stretching the tension cord in the opposite direction. be able to. In this case, however, it is necessary to attach the upholstery cords only to the upper and lower ends of the movable frame.
8 and the storage case 13.

In the screen opening / closing device having the above structure, the acting force of the weight 24 acts in the opening direction of the screen 10, and therefore, the latches 33, 3 in the closed state.
When the screen 4 is removed, the screen 10 is automatically opened by the action of the weight 24 acting on the movable frame 18 via the tension cords 20a to 20d. In this case, the acting force of the weight is a plurality of tension cords 20.
The movable frame 18 acts on a plurality of points of the movable frame 18 via a to 20d, and moreover always acts on the movable frame 18 in a substantially constant state, so that the movable frame can be automatically opened stably and the operability of the screen is improved. Is done.

On the other hand, the movable frame 18 is manually moved in the closing direction against the acting force of the weight 24. In this case, the movable frame 18 is moved by the acting force of the weight 24. In order to move the movable frame 18 relatively stably, there is little room for applying a force that destabilizes the posture of the movable frame, and therefore, the magnitude and operating direction of the operation force are constant. be able to. In addition, the provision of the buffer means 26 on the weight 24 allows the weight 24 to slowly stop when the weight 24 reaches the descending position near the end.
It is possible to prevent the movable frame 18 from being stopped at the end of the opening and closing by a simple means, and to prevent noise generation and damage.

The movable frame 1 attached to the screen 10
8 is desirably provided with a parallel movement mechanism for keeping the posture constant because its posture is not restricted by a screen or the like. However, by providing a parallel movement mechanism as shown in FIG. It can be shared with the above mechanism for automatic opening or automatic closing. The parallel movement mechanism shown in FIG. 4 is provided with tensioners 41 a and 41 b having one ends attached to both upper and lower ends of the movable frame 18, and the translators 43 and 44 installed at both ends of the side frame 14 located on the opposite side of the storage case 13. And the tension cords 41a and 41b are
After being folded back at 3, 44, it is wound around the diverter 45, 46 provided at both ends of the storage case 13, and the tension cords 41a, 41b from the respective diverter 45, 46 are further turned. Wrap around the turning elements 47 and 48 provided at the end of the storage case opposite to the position of the
Each end of 41b is fixed to the lower end and the upper end of the movable frame 18.

A suspension string 49 branched from the tension cord 41b that moves up and down in the storage case 13 is wound around the deflecting element 50 in the storage case and is suspended therefrom.
By attaching, the movable frame is given an urging force in the opening direction. This weight is also provided with a buffer means 26 for stopping the buffer when the weight reaches the descending position close to the terminal end, but this is omitted in FIG.

With such a parallel moving mechanism, the tension cord 4
If the posture of the movable frame 18 is restricted by 1a and 41b, it is possible to automatically open or close by utilizing a part of the tension cords 41a and 41b effectively. In addition,
Each of the above-described deflectors can be formed by a rotatable pulley or a fixed guide member made of a synthetic resin material or the like having a small frictional resistance with the tension string.

[0019]

As described in detail above, according to the screen opening / closing device of the present invention, in the screen opening / closing device which opens and closes the screen which can be expanded and contracted in an accordion type, the movable device attached to one end of the screen is provided. The operability is improved by applying an opening or closing force to the frame to automatically open or close the frame, and at the same time, the magnitude and operating direction of the operating force are constant compared to manual operation. Thus, it is possible to obtain a screen opening / closing device that maintains the stability of the posture during the parallel movement and that effectively utilizes a part of the mechanism to provide a buffering action at the end of opening / closing.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of an embodiment of a screen opening and closing device according to the present invention.

FIG. 2 is a horizontal sectional view of the same.

FIG. 3 is a longitudinal sectional view of the same.

FIG. 4 is a schematic front view showing an example of a parallel moving mechanism used in the embodiment.

[Explanation of symbols]

 Reference Signs List 10 screen, 11 upper frame, 12 lower frame, 13 storage case, 14 side frame, 18 movable frame, 20a to 20d tension string, 21b to 21d, 22 turning element, 24 weight, 26 buffer means, 27 spring, 28 elasticity Member, 25 guide cylinder, 30 pressure chamber, 31 leak gap, 41a, 41b tension cord, 43-48 deflector, 49 hanging string.

Claims (4)

(57) [Scope of request for utility model registration] 1. A base for a screen, which is made to be stretchable in an accordion style by fixing a large number of pleats in a storage case constituting one side frame of the screen frame, and bending the screen. A movable frame for opening and closing operation is attached to the end of the screen, and the movable frame is slidable along the screen frame. One end of a plurality of tension cords is fixed to the movable frame, and The other end is wrapped around a deflecting member provided on the side frame of the screen frame and is suspended in the side frame, and by attaching a weight to the lower end thereof, an urging force in the opening or closing direction is applied to the movable frame, A screen opening / closing device, comprising: a buffering means for giving resistance to the lowering operation when the weight reaches a lowering position near the end of opening or closing. 2. The screen opening / closing device according to claim 1, wherein the weight means serves as a buffer for giving resistance to the downward movement of the weight, in a direction in which the weight stops when the weight reaches a downward position close to the end. A screen opening / closing device, comprising a spring or an elastic member for applying an urging force. 3. The screen opening / closing device according to claim 1, wherein a guide cylinder for raising and lowering the inside of the weight using a piston as the weight is provided as buffer means for giving resistance to the downward movement of the weight.
A screen opening / closing device, wherein a leakage gap for allowing the pressurized air to leak is provided in a pressure chamber that pressurizes the internal air when the weight reaches the descending position near the terminal end. 4. An accordion-type telescopic base which is fixed in a storage case forming one side frame of the screen frame by applying a large number of pleats and bending the screen. A movable frame for opening and closing operation is attached to the tip of the screen frame, and the movable frame is slidable along the screen frame. A plurality of tension cords having one end fixed to the movable frame are connected to one side of the screen frame. Wrap it around the turning element provided on the frame, guide it to the opposite side of the movable frame in the moving direction of the movable frame through one of the upper and lower frames, and fix the other end to another part of the movable frame. A parallel movement mechanism that restrains the posture of the movable frame, by hanging a suspension string branched from a tension cord that moves up and down in the side frame into the side frame, and attaching a weight to its lower end to open or close the movable frame. Attached And applying a force, when the weight has reached the lowered position close to the open or closed end, provided with a buffer means for providing a resistance to its downward movement, the screen switching device, characterized in that.