JP7569077B2 - Window ventilation net - Google Patents

Description

This invention relates to a ventilation net that is attached between a sliding window, such as a horizontal sliding window or a sash window, and its window frame, and can be opened and closed in conjunction with the window without any gaps.

When opening a window to ventilate, dust and insect prevention measures such as screen doors are used to prevent dust and insects from entering the room. A typical example is a sliding screen door, but because sliding screen doors require special rails, installing a new one on an existing window requires extensive work and is expensive.

On the other hand, Patent Documents 1 and 2 disclose a screen that can be attached and detached to an existing window using magnets.

Japanese Utility Model Application Publication No. 7-4789 Registered Utility Model No. 2222559

The magnetic detachable screen doors in Patent Documents 1 and 2 are somewhat easier to install than typical sliding screen doors, but because they have a frame that is the right size for the window, installing them on relatively large windows is not necessarily easy.

Furthermore, conventional screen doors, including those in Patent Documents 1 and 2, are installed to cover the entire window. This allows dust and insect protection to be achieved at all times regardless of how open the window is, but the extent to which the window is opened when ventilating is not fixed and is ultimately decided by the user after taking into consideration various factors such as the purpose of ventilation, the season, time of day, surrounding environment, and lifestyle.

In this regard, apart from special cases where all the air in a room needs to be replaced in a short period of time, there is a strong tendency to not open windows all the way, but rather to open them only when necessary, out of consideration for privacy and crime prevention. In particular, in winter and in cold regions, people often open windows only slightly to ventilate the room, so that the room temperature does not drop too drastically due to cold air.

As such, for everyday ventilation, windows are often left half-open rather than fully open. Conventional screen doors are large enough to always cover the entire window, which means a lot of wasted space despite the complex installation. Also, when the window is half-open, half of it overlaps with the screen, which creates the problem of blocking natural light and the view.

In addition, in order to prevent the intrusion of fine dust, pollen, and tiny insects that cannot be captured by a sliding screen door already installed on a window, it is possible to install an additional fine-mesh screen door to create a double screen door. However, the screen doors of Patent Documents 1 and 2 have many restrictions, such as the fact that if they are installed on the inside of the room, the screen door must be removed every time the window is opened or closed, and even if they are installed on the outside of the room, the installation work is extremely difficult on high windows that do not have scaffolding. Therefore, it is not realistic to create a double screen door using the screen doors of Patent Documents 1 and 2.

The present invention was made to solve the above-mentioned problems, and its purpose is to provide a window ventilation net that can be easily and rationally installed on windows that open and close by sliding, regardless of whether or not there is an existing screen.

In order to achieve the above-mentioned object, the present invention provides a window ventilation net that opens and closes by sliding, which includes a rectangular net body that covers the opening of the window when it is opened to the maximum opening, a pair of fixing parts provided on two of the four sides of the net body that are perpendicular to the opening and closing direction of the window, and a pair of semi-fixing parts provided on the other two sides of the net body, one of the fixing parts can be fixed to the frame of the window, and the other fixing part can be fixed to a frame that faces the frame of the window frame, and the pair of semi-fixing parts are made of flexible strip-shaped magnets that can be wound into a roll, and the magnetic surfaces are folded back 90 degrees from the net body and magnetically attached to the opposing surfaces of a pair of frames that are parallel to the opening and closing direction of the window frame, and the magnetic attachment is released and the net is wound up by a length corresponding to the closing width of the window, while the magnetic attachment is maintained for the opening width of the window, allowing the net body to be opened and closed without gaps in conjunction with the window.

The ventilation net of the present invention is configured so that the net body is most expanded to shield the opening when the window is opened to a predetermined maximum extent, and when the window is closed from that point, the fixed portion is fixed to the window frame and the frame of the window frame facing it, so the net body is gradually folded. At that time, the net body is folded toward the inside of the room, so it is not caught even when the window is fully closed. In addition, the strip-shaped magnet that constitutes the semi-fixed portion is released from magnetization by the width of the closed window and the part that deviates from the window frame is rolled up, while the strip-shaped magnet for the width of the open window is still magnetized to the window frame in an expanded state. Then, the next time the window is opened, the rolled up part gradually expands and is magnetized again to the window frame. In this way, according to the present invention, when the window is opened and closed, the semi-fixed portion repeatedly expands and rolls up while leaving the magnetic part, so that no gap is created between the window frame and the net body, allowing ventilation while maintaining the dustproof and insectproof effects.

It is preferable that the pair of semi-fixed parts are band-shaped rubber magnets, because the flexibility of the rubber magnet allows it to roll smoothly when the window is closed.

Furthermore, it is preferable that the pair of semi-fixed parts have vertical slits formed at a predetermined interval on the magnetic surface. In this case, too, the slits allow the semi-fixed parts to be wound more smoothly.

The size of the ventilation net of the present invention is determined by the window to which it is applied and the maximum extent to which the window is opened when ventilating. For example, for everyday ventilation, opening the window halfway as described above is sufficient, so if the net body is made half the size of the window, ventilation effects and dust and insect prevention effects can be obtained without waste in the structure. However, it is also free to determine the maximum opening as when the window is fully opened, in which case the net body will be cut to the same size as the window.

By the way, windows come in a variety of vertical and horizontal dimensions. In contrast, with this ventilation net, even if the length of the semi-fixed part of the net body does not reach the predetermined maximum opening width, the semi-fixed part can be attached to the window frame by adjusting the opening of the window. On the other hand, if the fixed part is longer than the window frame, it will slacken, and if it is shorter, one of the semi-fixed parts will not reach the window frame and cannot be magnetically attached. Therefore, in this invention, the net body uses a means in which the two divided nets are connected by hook-and-loop fasteners so that the overall length can be adjusted in the direction perpendicular to the opening and closing direction of the window. Specifically, male and female hook-and-loop fasteners are provided on the sides of the divided nets facing the semi-fixed parts as connecting sides. In this case, by making one of the hook-and-loop fasteners wider, it is possible to adjust the overall length of the net body by a length that corresponds to that width.

As for the specific configuration of the fixing parts, it is possible to fix the fixing parts to the window frame or the opposing window frame using double-sided tape or adhesive, but it is preferable that at least one of the fixing parts is detachably fixed using a hook-and-loop fastener. According to this method, if both fixing parts are detachable using a hook-and-loop fastener, the entire ventilation net can be easily attached and detached, and if only one side is detachable using a hook-and-loop fastener, removing it can easily secure an opening for people to enter and exit, such as a bay window.

The sliding windows to which this invention can be applied include horizontal sliding windows (double sliding windows) that slide left and right, and sash windows that slide up and down, but the invention can be applied to either type of window. That is, if the left and right sides of the net body are fixed parts and the top and bottom are semi-fixed parts, the invention can be applied to horizontal sliding windows, and if the top and bottom of the net body are fixed parts and the left and right are semi-fixed parts, the invention can be applied to sash windows.

Furthermore, although the material and mesh width of the net itself are not specified, it goes without saying that a smaller mesh width will improve the dust- and insect-proofing effect. Also, when combining an existing screen with a double screen, if the fixing part is made detachable with a hook-and-loop fastener as described above, the existing screen can be opened and closed from this part.

According to the present invention, the size of the net body can be made to suit daily ventilation, so there is no unnecessary overlap with the window, and it is rational in that it does not obstruct lighting or the view. In addition, since a sturdy frame is not required, it is much easier to handle and install than conventional screen doors, and since it is attached to the window and window frame, it can be installed on windows that already have sliding screen doors installed. Furthermore, the semi-fixed side is made of a strip-shaped magnet that can be wound into a roll, so it is wound only by the width of the window opening and remains magnetically attached to the window frame for the width of the closed window, so the net body can be opened and closed without gaps in conjunction with the opening and closing of the window, ensuring dust and insect protection effects.

FIG. 1 is an explanatory diagram showing a window ventilation net according to a first embodiment of the present invention applied to a sliding window; An explanatory diagram of the hook-and-loop fastener constituting the fixing portion of the same. FIG. 13 is an explanatory diagram showing the semi-fixed portion and the magnetic portion provided on the window frame. FIG. 13 is an explanatory diagram showing an example of the configuration of the semi-fixing unit of the first embodiment; An explanatory diagram showing the state when the window is closed. FIG. 1 is an explanatory diagram showing a second embodiment of the present invention;

The following describes a preferred embodiment of the present invention with reference to the attached drawings. Figure 1 is a front view of a window ventilation net according to one embodiment of the present invention applied to a sliding window.

First, the general structure of the sliding window to which the ventilation net of the present invention is applied in this embodiment will be described. The sliding window is composed of a window frame F and two glass windows W1 and W2. The window frame F is composed of upper and lower horizontal frames F1 and F2 and left and right vertical frames F3 and F4 that are aligned with the window frame WF fitted into a window hole drilled in the wall. The two glass windows W1 and W2 each consist of upper and lower horizontal bars S1 and S2 and left and right vertical frames S3 and S4, and are slidably attached to the upper and lower horizontal frames F1 and F2 of the window frame F. When opening and closing the window, the right glass window W1 on the inside of the room is sometimes called the inner shoji, and the left glass window W2 on the outside of the room is sometimes called the outer shoji. The vertical frames S3 and S4 on which the glass windows W1 and W2 overlap when fully closed are provided with crescents C1 and their receivers C2, respectively, so that they can be locked.

In this embodiment, the ventilation net is applied to the right glass window W1, known as an inner screen, for sliding windows with this structure, and is configured with a net main body 1, fixed parts 2 and 3 on the left and right, and semi-fixed parts 4 and 5 on the top and bottom. In other words, this ventilation net is attached so that the right glass window W1 opens and closes when ventilation is required.

Regarding the details of each part, first, the net body 1 is made by cutting a net into a rectangle with a mesh width that obtains the desired dust-proof and insect-proof effect. Its outer dimensions are such that the vertical length matches the height H of the glass window W1, while the horizontal width matches the maximum opening width L of the glass window W1. This maximum opening width L can be set arbitrarily by the user in advance, but in this embodiment, the opening width in the half-open state is set as the maximum opening, assuming the opening width necessary for daily ventilation. However, the present invention is not limited to this, and it is also possible to set the maximum opening width L to the fully open state.

The fixing parts 2 and 3 provided on the left and right sides of the net body 1 have a length in the vertical direction of the net body 1, and the fixing part 2 on the left side is fixed to the right vertical frame S4 of the glass window W1, and the fixing part 3 on the right side is fixed to the right vertical frame F4 of the frame of the window frame F. These fixing parts 2 and 3 can be fixed to the vertical frame S4 and vertical frame F4 with double-sided tape or adhesive, or if they are fixed with hook-and-loop fasteners, the ventilation net can be easily attached and detached. In this case, as shown in Figure 2, the hook-and-loop fastener constituting the fixing part 2 consists of a male fastener 2a (side A) and a female fastener 2b (side B), but which fastener 2a or 2b is provided on the net body 1 and the vertical frame S4 or vertical frame F4 to which it is attached can be freely selected. Also, even if one fixing part is fixed with double-sided tape or adhesive, if the other fixing part is fixed with hook-and-loop fastener, a temporary opening to the outside can be secured by peeling off the hook-and-loop fastener, allowing people and objects to enter and exit.

On the other hand, the semi-fixed sections 4 and 5 provided on the top and bottom of the net body 1 are made of strip-shaped magnets with a length that matches the width of the net body 1, and are magnetically attached to the top and bottom horizontal frames F1 and F2 of the window frame F. More specifically, each of the semi-fixed sections 4 and 5 is folded back 90 degrees toward the inside of the room so that the magnetically attached surface faces outward, and is magnetically attached to the bottom surface of the upper horizontal frame F1 and the top surface of the lower horizontal frame F2 of the window frame F. If the horizontal frames F1 and F2 are made of wood or resin and cannot be magnetically attached as they are, magnetic attachment sections 6 made of strip-shaped magnets or steel plates can be provided on the bottom surface of the upper horizontal frame F1 and the top surface of the lower horizontal frame F2, as shown in Figure 3, to make the semi-fixed sections 4 and 5 magnetically attachable.

The semi-fixed portions 4 and 5 are strip-shaped magnets, and in the present invention, they must be flexible enough to be wound into a roll. A preferred example is a rubber magnet, which is easily available. It is even more preferable to provide parallel vertical slits 7 at regular intervals along the length of the magnetized surface of the rubber magnet, as shown in Figure 4. The vertical slits 7 allow the strip-shaped magnet to wind like a caterpillar, and this, combined with its flexibility, allows it to be wound into a roll more smoothly.

According to the window ventilation net of the present invention configured as described above, the fixed parts 2 and 3 and the semi-fixed parts 4 and 5 of the net main body 1 are made of flexible materials such as hook-and-loop fasteners and rubber magnets, making it much easier to handle and install than conventional screen doors that have a sturdy frame. Furthermore, because the net main body 1 is cut to a size that matches the maximum opening width of the glass window W1, not only is it dust-proof and insect-proof and has a certain degree of ventilation efficiency, but it is also rational in that even when the glass window W1 is half-open or less for ventilation, there is no overlap between the net main body 1 and the glass window W1, so lighting and views are not obstructed.

In addition, when the glass window W1 is opened or closed, as shown in FIG. 5, the net body 1 is folded into the interior of the room by an amount corresponding to the width of the closure, so that even when the window is fully closed, the net body 1 does not get caught between the right-side vertical frame S4 of the glass window W1 and the right-side vertical frame F4 of the window frame F.

Furthermore, when the glass window W1 is fully opened, the entire magnetic surface of the upper and lower semi-fixed parts 4 and 5 is magnetically attached to the upper and lower horizontal frames F1 and F2 of the window frame F, and when the glass window W1 is then closed, the magnetic attachment is released to the closed width and the window is wound up into a roll, but the magnetic attachment is maintained for the open width. In this way, the upper and lower semi-fixed parts 4 and 5 are wound in conjunction with the opening and closing of the glass window W1, but because the magnetic parts are always present, no gaps are created when the glass window W1 is opened or closed.

Figure 6 shows a second embodiment of the present invention, in which the ventilation net 10 is divided into an upper net 11 and a lower net 12, which are connected by male and female hook-and-loop fasteners 13 and 14. With this configuration, the vertical length of the ventilation net 10 can be adjusted by moving the fastening positions of the male and female hook-and-loop fasteners up and down. Therefore, it can be widely applied to windows of different heights and sizes. In this embodiment, the fixing parts are provided on both the left and right sides of the ventilation net 10, and the semi-fixing parts are provided on both the top and bottom sides of the ventilation net 10, just like the above embodiment.

So far, we have used sliding windows, which open and close by sliding left and right, as an example of the type of window to which this ventilation net can be applied, but this ventilation net can also be applied to sash windows, which open and close by sliding up and down. In this case, this ventilation net can be applied to a sash window simply by rotating it 90 degrees from the time it is applied to a sliding window. In other words, it can be applied to a sash window by positioning the fixed parts above and below the main body of the net, and the semi-fixed parts to the left and right of the main body of the net.

1 Net body 2, 3 Fixed portion 4, 5 Semi-fixed portion 7 Vertical slit 10 Divided net body 11 Upper net 12 Lower net 13 Hook-and-loop fastener (male)
14 Hook and loop fastener (female)

Claims (7)

a pair of semi-fixed parts provided on the other two sides of the net body, one of the fixed parts being capable of being fixed to the frame of the window and the other fixed part being capable of being fixed to a frame opposite to the frame of the window, the pair of semi-fixed parts being made of flexible band-shaped magnets that can be wound into a roll, the magnetic surfaces of which are folded back 90 degrees from the net body and magnetically attached to the opposing surfaces of a pair of frames that are parallel to the opening and closing direction of the window , the magnetic attachment being released for a length corresponding to the closing width of the window as the net is wound up, while the magnetic attachment is maintained for the opening width of the window, allowing the net body to be opened and closed without gaps in conjunction with the window. A window ventilation net according to claim 1, in which the pair of semi-fixed parts are band-shaped rubber magnets. A window ventilation net according to claim 1 or 2, in which the pair of semi-fixed parts have vertical slits formed at a predetermined interval on the magnetic surface. A window ventilation net according to claim 1, 2 or 3, in which two separate nets are connected by hook-and-loop fasteners so that the overall length can be adjusted in the direction perpendicular to the opening and closing direction of the window. A window ventilation net according to any one of claims 1 to 4, in which at least one of a pair of fixing parts is detachably attached to the window frame and/or the window frame opposite the stile by a hook-and-loop fastener. A window ventilation net according to any one of claims 1 to 5, in which the left and right sides of the net body are fixed and the top and bottom are semi-fixed, making it applicable to a horizontal sliding window that opens and closes from left to right. A window ventilation net according to any one of claims 1 to 4, in which the top and bottom of the net body are fixed parts and the left and right are semi-fixed parts, making it applicable to a sash window that opens and closes vertically.

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