JP7152322B2 - screen and screen equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a screen and a screen device used as a sunshade or a screen door for a building.

Screens serving as sunshades and blinders are sometimes installed on the windows and terraces of buildings such as houses and shops. A screen of this type has a structure in which warps and wefts are plain-woven (for example, see Patent Document 1).

JP 2014-224374 A

Usually, the screen as described above is used by being wound around a roll in a main box provided on the upper part of the window so as to be able to be wound up and delivered. Therefore, when the thickness of the laminated screen wound on the roll is increased, it is necessary to increase the size of the main body box. That is, in the screen of Patent Document 1, since the warp and the weft are plain woven, when the screen is wound on a roll, the textures (intersection points) of the upper layer and the lower layer overlap to increase the lamination thickness. Such problems can also occur in screens for other uses, such as roll-type screen doors. Furthermore, even for a screen door in which the net is fixed to a normal frame, which is not a roll screen door, the net is rolled into a roll during the manufacturing process for storage and transportation. There is a desire to reduce the

SUMMARY OF THE INVENTION It is an object of the present invention to provide a screen and a screen device that can reduce the thickness of layers when wound into a roll.

The screen according to the present invention is a screen formed by weaving warps and wefts and wound into a roll. is characterized in that the warp is woven while straddling a plurality of the wefts.

According to the present invention, it is possible to reduce the laminated thickness of the screen when wound into a roll.

1 is a side view schematically showing a state in which a screen device using a screen according to one embodiment of the present invention is installed in a building; FIG. FIG. 2A is a schematic diagram of the screen viewed from one side, and FIG. 2B is a schematic diagram of the screen viewed from the other side. FIG. 3(A) is a schematic view of the screen having auxiliary wefts as viewed from one side, and FIG. 3(B) is a schematic view of the screen having auxiliary wefts as viewed from the other side. . FIG. 4 is a schematic cross-sectional view of the screen shown in FIG. 3 cut in a direction orthogonal to the longitudinal direction of warps; FIG. 10 is a schematic view of another side of the screen having a configuration in which auxiliary wefts are provided;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the screen according to the present invention will be described in detail by exemplifying a screen device using the same and citing preferred embodiments, with reference to the accompanying drawings.

FIG. 1 is a side view schematically showing a state in which a screen device 12 using a screen 10 according to one embodiment of the present invention is installed in a building 14. FIG. In the present embodiment, the screen 10 is movably provided on the outdoor side of the window 14a of the building 14 such as a house or a store, and functions as a sunshade that shields the window 14a from sunlight. The screen 10 can also be used as a roll screen that moves up and down on the indoor side of the window 14a to block sunlight, a screen door that prevents dust and insects from entering through the open window 14a, and the like.

As shown in FIG. 1, the screen device 12 includes a roll 16 capable of winding and feeding the screen 10, and a main box 18 that houses the roll 16. As shown in FIG. The screen device 12 can cover the outdoor side of the window 14a by pulling out the screen 10 downward from a main body box 18 attached to the upper outer wall surface of the window 14a. The roll 16 is elastically biased in the direction of rotation in which the screen 10 is wound. The bottom end of the screen 10 pulled out from the roll 16 can be locked to the floor surface 14b of a terrace or the like using a hook 20, for example. As a result, the screen 10 receives tension in the winding direction from the roll 16 at the upper end while the lower end is supported by the hooks 20, so that the screen 10 can be stretched vertically with sufficient tension without slack.

FIG. 2A is a schematic diagram of the screen 10 viewed from one side 10a, and FIG. 2B is a schematic diagram of the screen 10 viewed from the other side 10b. As shown in FIGS. 2(A) and 2(B), the screen 10 is a net formed by weaving warp yarns 24 and weft yarns 22 in a mesh pattern. In this embodiment, the warp threads 24 and the weft threads 22 are formed in different colors, but the warp threads 24 and the weft threads 22 may be formed in the same color. As shown in FIG. 1 , the screen 10 has one surface 10 a arranged on the outside of the building 14 and another surface 10 b arranged on the indoor side of the building 14 .

The warp yarns 24 are yarns extending along the winding direction and the sending direction with respect to the roll 16 . The weft yarns 22 are yarns extending along a direction perpendicular to the warp yarns 24 . That is, in the screen device 12 shown in FIG. 1, the warp yarns 24 extend in the vertical direction of the screen 10 drawn from the roll 16, and the weft yarns 22 extend in the horizontal direction (width direction). In the case of this embodiment, the warp yarns 24 and the weft yarns 22 are composed of two layers of polypropylene (core part) having a low melting point of about 130 (°C) around a polypropylene (core part) having a high melting point of about 165 (°C). Using extruded core-sheath structure monofilament yarns, warp yarns 24 and weft yarns 22 are fused (thermally fused) to each other at overlapping weaves 26 and intersections 28 . As a polypropylene monofilament yarn having such a core-sheath structure, for example, the MFR (viscosity) of the core is 2.5 (g/10 min) and the MFR (viscosity) of the sheath is 7.0 (g/10 min). You can use things. By using monofilament yarns, the weight of each yarn 22, 24 can be reduced. By fusing the intersections 28 and the like, it is possible to prevent the texture 26 and the threads 22 and 24 from being displaced in the product, and to reduce the thickness of the screen 10 itself. The diameters of the warp yarns 24 and the weft yarns 22 are, for example, approximately 0.10 to 0.50 (mm). In this embodiment, the diameter of the warp 24 is set to 0.15 (mm), and the diameter of the weft 22 is set to 0.30 (mm). 2(A) and 2(B), the shape of the warp 24 and the weft 22 are exaggerated, but in an actual product, for example, the warp 24 and the weft 22 are 20 in 1 inch square. About 100 are provided. Various additives such as ultraviolet absorbers, light stabilizers, antioxidants, lubricants, antistatic agents, and flame retardants may be added to the warp yarns 24 and weft yarns 22 .

The weft 22 may be formed of a single-layer structure monofilament made of, for example, polypropylene exhibiting a high melting point (165 (° C.)) instead of a core-sheath structure. As a result, the mold for molding and the molding conditions for the weft yarn 22 can be simplified, and the number of extruders can be reduced to one, so that the manufacturing cost can be greatly reduced. Moreover, when the weft 22 has a single-layer structure, the cost can be further reduced because the expensive low melting point (130 (° C.)) polypropylene is not used.

As shown in FIG. 2(A), on the one side 10a, the warp yarns 24 are arranged on the back side of the weft yarns 22 except for the texture 26, and the weft yarns 22 are woven with the warp yarns 24 while straddling the four warp yarns 24. there is That is, the weaves 26 are arranged along the longitudinal direction of the weft yarns 22, and the interval between them is four warp yarns 24. As shown in FIG. Therefore, the exposed ratio (surface area) of the weft yarns 22 is larger than the exposed ratio of the warp yarns 24 on the one surface 10a. Especially in the case of this embodiment, the weft 22 is thicker than the warp 24 . As a result, the ratio of the exposed weft yarns 22 to the exposed area of the warp yarns 24 and the weft yarns 22 is set to be about 70% on the one surface 10a.

As shown in FIG. 2B, on the other side 10b, the weft 22 is arranged on the back side of the warp 24 except for the texture 26, and the warp 24 is woven with the weft 22 while straddling the four wefts 22. ing. That is, the weaves 26 are arranged along the longitudinal direction of the warp yarns 24, and the interval between them is four weft yarns 22. As shown in FIG. For this reason, the exposed ratio (surface area) of the warp yarns 24 on the other surface 10b is larger than the exposed ratio on the one surface 10a. It is set to be approximately

The number of weft yarns 22 straddling the warp yarns 24 on one side 10a may be two or more by a weaving method called twill or satin weave. There is a concern that the warp yarns 24 and the weft yarns 22 may be misaligned before the wearing process. Therefore, the weft 22 preferably straddles every three to five warps 24, and most preferably straddles every four warps 24 as described above. The same applies to the number of warp yarns 24 straddling the weft yarns 22 on the other surface 10b.

Thus, in the screen 10, the weft yarn 22 straddles a plurality of warp yarns 24 on one surface 10a, and the warp yarn 24 straddles a plurality of weft yarns 22 on the other surface 10b. Therefore, the texture 26 does not continue in the longitudinal direction of the warp 24 between the adjacent wefts 22 , 22 , and the thickness of the layer when wound on the roll 16 is reduced. In particular, in the case of this embodiment, between the adjacent wefts 22, 22, the texture 26 of the weft 22 and the warp 24 is displaced in the longitudinal direction of the weft 22. Specifically, the texture 26 is the warp. 24 are shifted in order. For this reason, as shown in FIGS. 2(A) and 2(B), the weaves 26 are arranged obliquely and regularly. Since the positions of the weft yarns 22 are sequentially shifted in the longitudinal direction of the weft yarns 22, the lamination thickness is further reduced. The effect of reducing the laminated thickness is not limited to the screen device 12 having a roll structure and the roll screen door as shown in FIG. In other words, even for a screen door with a general structure in which the screen is fixed to the frame, the screen is wound and stored and transported at the time of manufacture, so the effect of reducing the laminated thickness when it is wound is not noticeable during storage and transport. is effective.

As described above, in the screen 10, the warp threads 24 and the weft threads 22 are formed in different colors, and are colored by, for example, dyeing or dope dyeing. Specifically, the warp yarns 24 and the weft yarns 22 have a color difference at a level at which the difference in color can be discerned with the naked eye, for example, a color difference ΔE of 3 or more (L*a*b color system), preferably about 4 to 15. have. In the screen 10 of the present embodiment, the color of the weft yarns 22 whose exposure ratio is high on the outdoor surface 10a is set to a higher brightness than the color of the warp yarns 24 whose exposure ratio is high on the other indoor surface 10b. For example, the warp yarns 24 are black and the weft yarns 22 are gray, light gray, cream, beige, green, brown, or any other color. As a result, the one side 10a has a bright color in which the color of the weft yarn 22 appears strongly, and the other side 10b has a dark and dark color in which the color of the warp yarn 24 appears strongly.

Therefore, the screen 10 can be configured in different colors without coloring the one surface 10a and the other surface 10b with a coating agent. For this reason, the screen 10 can prevent quality deterioration such as color change and dirt adhesion due to the oil contained in the coating agent, ensuring high product quality, and also enables cost reduction by omitting the coloring process and not using the coating agent. becomes. Moreover, the screen device 12 using the screen 10, as shown in FIG. On the other hand, the darker side 10b suppresses the reflection of light to the inside of the room and makes it easy to see through the outside, and the same effect can be expected when the screen 10 is used as a screen door.

In the screen 10, the warp yarns 24 along the winding direction around the roll 16 are composed of yarns thinner than the weft yarns 22. - 特許庁For this reason, the thickness of the laminate when wound on the roll 16 is further reduced, and the winding force on the roll 16 is reduced, thereby smoothing the winding itself. Moreover, in the screen 10, the weft yarns 22 extending in the left-right direction perpendicular to the delivery direction from the rolls 16 and to which tension from the rolls 16 is not applied are composed of yarns thicker than the warp yarns 24. - 特許庁Therefore, the tension (rigidity) of the weft 22 itself can be sufficiently secured, and the tension can be stretched not only in the vertical direction along the warp 24 but also in the horizontal direction along the weft 22 without loosening or bending during use as shown in FIG. can.

The screen 10 has, for example, a surface with 78 (threads/inch) of core-sheath structure warp yarns 24 having a diameter of 0.15 (mm) and a core-sheath structure or single-layer structure weft yarns having a diameter of 0.30 (mm). It has a two-sided structure with 22 and 78 (lines/inch), and has high shielding performance.

By the way, in the screen 10 of this embodiment, the wefts 22 are made thicker than the warp 24, so the gap C1 between the adjacent wefts 22 tends to be larger than the gap C2 between the adjacent warps 24,24. be. Therefore, in order to prevent the wide gap C1 from lowering the shielding performance, the screen 10 may have a configuration in which another weft (auxiliary weft 30) is added to the gap C1.

FIG. 3A is a schematic view of the screen 10 provided with the auxiliary weft 30 viewed from one side 10a, and FIG. It is a schematic diagram of what I saw. FIG. 4 is a schematic cross-sectional view of the screen 10 shown in FIG. 3 cut in a direction orthogonal to the longitudinal direction of the warp yarns 24. As shown in FIG. In the screen 10 shown in FIGS. 3 and 4, the same reference numerals as those of the screen 10 shown in FIGS. 1 and 2 indicate the same or similar configurations, and therefore have the same or similar functions and effects. A detailed description is omitted as a function of this function, and the same applies to the screen 10 shown in FIG. 5, which will be described later.

As shown in FIGS. 3A and 3B, the auxiliary weft 30 extends parallel to the weft 22 and is arranged to fill the gap C1 between the wefts 22,22. The auxiliary weft 30 is arranged on the back side of the warp 24 when viewed from the one surface 10a, for example, and is woven with the warp 24 while straddling a plurality of warps 24 (four in FIG. 3) like the weft 22. . That is, the stitches 32 of the auxiliary weft 30 and the warp 24 are arranged along the longitudinal direction of the auxiliary weft 30 with an interval corresponding to four warps 24 . The spacing of the weaves 32 may be varied in the same manner as for the weaves 26 described above.

In this embodiment, the auxiliary wefts 30 are the same as the warp 24, that is, have the same shape and color as the warp 24. As shown in FIG. That is, the auxiliary weft 30 is, for example, a polypropylene monofilament yarn having a core-sheath structure with a diameter of 0.15 (mm). The auxiliary wefts 30 may be of a different shape and color than the warp yarns 24 . However, since the auxiliary weft 30 is for closing the gap C1 and enhancing the shielding performance of the screen 10, black which is the same color as the warp 24, or an equivalent color which looks almost the same, such as dark gray, is preferable. Since the auxiliary weft 30 merely fills the gap C1, it hardly affects the color of the one surface 10a.

The auxiliary weft 30 closes the gap C1 and constructs a sandwich structure in which the warp 24 is sandwiched between the auxiliary weft 30 and the weft 22 as shown in FIG. Therefore, the provision of the auxiliary weft yarns 30 in the screen 10 also has the effect of reliably preventing the warp yarns 24 and the weft yarns 22 from being misaligned before the fusing step. Further, in the screen 10 of this configuration example, for example, a surface with 78 (threads/inch) of the core-sheath structure warp 24 having a diameter of 0.15 (mm) and a core-sheath structure or single warp having a diameter of 0.30 (mm) A three-sided structure is formed by a surface with 78 (numbers/inch) of layered wefts 22 and a surface with 78 (numbers/inch) of core-sheath structure auxiliary wefts 30 having a diameter of 0.15 (mm). It has high shielding performance.

Since the auxiliary weft 30 is fused with the warp yarn 24 at the intersecting point 33 with the texture 32 and the warp yarn 24 in the fusion bonding process, there is no misalignment in the product stage. Since the weft yarns 22 of the present embodiment are considerably thicker than the warp yarns 24, the fusion strength with the warp yarns 24 tends to be weaker than the fusion strength between the warp yarns of the same diameter. In this regard, in this configuration example, the auxiliary weft 30 and the warp 24 having the same diameter are strongly fused together, and the auxiliary weft 30 is intricately entwined with the weft 22, so that misalignment can be prevented more reliably. .

As shown in FIG. 5, the screen 10 may be configured by adding another weft (auxiliary weft 34) in place of or in combination with the auxiliary weft 30 shown in FIG. The auxiliary weft 34 is arranged, for example, on the front side of the weft 22 (and the warp 24) when viewed from the other side 10b, that is, on the back side of the weft 22 (and the warp 24) when viewed from the one side 10a. are woven with the warp yarns 24 while straddling a plurality of warp yarns 24 (four in FIG. 5). Therefore, the stitches 36 of the auxiliary weft 34 and the warp 24 are arranged along the longitudinal direction of the auxiliary weft 34 with an interval corresponding to four warps 24 . The spacing of the weaves 36 may be varied in the same manner as the weaves 26, 32 described above.

In this embodiment, the auxiliary wefts 34 are the same as the warp 24, that is, have the same shape and color as the warp 24. As shown in FIG. That is, the auxiliary weft 34 is, for example, a polypropylene monofilament yarn having a core-sheath structure with a diameter of 0.15 (mm). The auxiliary wefts 34 may have a shape and color different from those of the warp yarns 24, but black, which is the same color as the warp yarns 24, or an equivalent color, such as dark gray, which looks substantially the same as the warp yarns 24, is preferable. As a result, in the screen 10, the auxiliary weft 34 hides the exposure of the weft 22 on the other surface 10b, and at the same time increases the exposure ratio of the same color as the warp 24, so that the reflection of light to the indoor side on the other surface 10b is further suppressed. be done. In the configuration example shown in FIG. 5, the exposure ratio of the warp yarns 24 and the auxiliary weft yarns 34 is set to about 70% with respect to the exposed area of the warp yarns 24, the weft yarns 22 and the auxiliary weft yarns 34 on the other surface 10b. . Of course, even in the configuration using the auxiliary weft 34, a sandwich structure is constructed in which the warp 24 is sandwiched between the weft 22 and the weft 22 in substantially the same manner as in the case of the auxiliary weft 30 shown in FIG. It is also possible to obtain the effect of being able to more reliably prevent the positional deviation of the . Since the auxiliary weft 34 is fused with the warp 24 at the intersecting points 37 with the texture 36 and the warp 24 in the fusing process, it is possible to prevent misalignment in the same manner as in the case of the auxiliary weft 30 described above.

When the screen 10 as described above is used as a sunshade as shown in FIG. It is set to about 15%. Therefore, when constructing this opening ratio of 5 to 15% with warp yarns 24 with a diameter of 0.15 (mm) and weft yarns 22 with a diameter of 0.30 (mm), there are about 50 to 90 warp yarns 24 per inch square. Approximately 20 to 70 wefts 22 are provided in a square of 1 inch for weaving. Substantially similarly, when the screen 10 is used as a screen door, the aperture ratio is set to, for example, about 60 to 80%, and the warp yarns 24 and the weft yarns 22 are woven with a number and spacing that can ensure this aperture ratio.

The screen according to the present invention is a screen formed by weaving warps and wefts and wound into a roll. is characterized in that the warp is woven while straddling a plurality of the wefts. According to such a configuration, since the wefts are misaligned between the adjacent wefts, it is possible to prevent the weaves from being overlapped between the laminated layers when the weft is wound into a roll, and the thickness of the lamination can be reduced.

In the screen according to the present invention, the screen may be wound into a roll along the longitudinal direction of the warp, and the diameter of the weft may be larger than the diameter of the warp. Then, the warp along the winding direction is composed of yarns thinner than the weft, so that the thickness of the laminate when wound into a roll is further reduced, and the winding itself is smooth by reducing the winding force. becomes. Moreover, since the weft perpendicular to the winding direction is composed of thick yarn, when the screen is opened flat, the rigidity of the weft itself can secure tension along the lateral width direction, so there is no loosening or bending in the lateral direction. can be stretched without

In the screen according to the present invention, on the one surface, between the adjacent wefts, the textures of the wefts and the warps may be shifted in the longitudinal direction of the wefts. By doing so, it is possible to more reliably prevent overlapping of weaves between the laminated layers when winding into a roll shape, and to further reliably reduce the thickness of the laminate.

In the screen according to the present invention, the weft may straddle four or more warps on the one surface, and the warp may straddle four or more wefts on the other surface. By doing so, it is possible to more reliably prevent overlapping of weaves between the laminated layers when wound into a roll, and further reduce the thickness of the laminate.

In the screen according to the present invention, the diameter of the weft is larger than the diameter of the warp, and an auxiliary weft having a smaller diameter than the weft is provided between the adjacent wefts, and the auxiliary weft is fused with the warp. It may be configured to be worn. By doing so, the gaps between the wefts can be hidden by the auxiliary wefts, the shielding performance of the screen can be improved, and the occurrence of misalignment can be suppressed.

In the screen according to the present invention, the warp yarns may be two-layered yarns having a sheath around the core, and the weft yarns may be single-layered yarns. Then, the manufacturing cost of the weft and the screen can be reduced.

A screen device according to the present invention is characterized by comprising the screen configured as described above and a roll capable of winding and delivering the screen. With such a configuration, it is possible to reduce the laminated thickness of the screen when the screen is wound on the roll, and the size of the device can be reduced.

It goes without saying that the present invention is not limited to the above-described embodiments, and can be freely modified without departing from the gist of the present invention.

For example, in the above-described embodiment, the exposed ratio of the weft yarns 22 is increased on the one surface 10a arranged on the outdoor side of the building 14, and the exposed ratio of the warp yarns 24 is increased on the other surface 10b. The exposed ratio may be increased, and the exposed ratio of the warp yarns 24 may be increased on the one surface 10a, or the exposed ratio of the warp yarns 24 on the other surface 10b may be larger than the exposed ratio of the weft yarns 22. Also, the warp threads 24 may be set to a brighter color than the weft threads 22 .

10 Screen 10a One side 10b Other side 12 Screen device 14 Building 14a Window 14b Floor 16 Roll 18 Body box 22 Weft 24 Warp 26,32,36 Texture 28,33,37 Intersecting point, 30, 34 Auxiliary weft

Claims (5)

A screen formed by weaving warp and weft and wound into a roll,
In one aspect, the weft yarn is woven while straddling a plurality of the warp yarns,
On the other hand, the warp is woven while straddling a plurality of the wefts ,
In the one aspect, between the adjacent wefts, the textures of the weft and the warp are displaced in the longitudinal direction of the weft,
The diameter of the weft yarn is configured to be larger than the diameter of the warp yarn,
An auxiliary weft having a smaller diameter than the weft is provided between the adjacent wefts,
A screen , wherein the auxiliary weft has the same color as the warp and is fused with the warp . The screen of claim 1, wherein
The screen is wound into a roll along the longitudinal direction of the warp,
A screen, wherein the diameter of said weft yarns is larger than the diameter of said warp yarns. 3. The screen according to claim 1 or 2 ,
In the one aspect, the wefts straddle four or more of the warp yarns,
In the other aspect, the screen is characterized in that the warp yarns straddle four or more of the weft yarns. In the screen according to any one of claims 1 to 3 ,
The warp is a two-layered yarn with a sheath provided around the core,
The screen, wherein the wefts are yarns of a single layer structure. A screen apparatus comprising: the screen according to any one of claims 1 to 4 ; and a roll capable of winding and delivering the screen.

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