Screen device

Abstract

To provide a screen device capable of preventing the generation of wrinkles in a screen main body even when engaging elements are overlapped with each other to cause winding slippage when a screen is wound.SOLUTION: The screen device has a screen 6, a winding shaft 7, a movable frame 8, and guide rails 9, 10. The guide rails 9, 10 are provided with slits 9a, 10a. A screen body 13 is provided between an upper end and a lower end of the screen 6. An upper end 6a and a lower end 6b are provided with first and second fastener tapes 14, 17 extending in an opening / closing direction, first and second engaging elements 15, 18 slidably engaged with the slits 9a, 10a, and first and second connecting tapes 16, 19 connecting the first and second fastener tapes 14, 17 and the screen body 13. The first and second connecting tapes 16, 19 are more flexible than the first and second fastener tapes 14, 17 and the screen body 13.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a screen device for mounting on a building opening, and more particularly to a screen device provided with engaging elements for guiding the screen on both side ends of the screen along the opening and closing direction.

Background Art

[0002] Screen devices for mounting on building openings are disclosed in many patent documents and are generally well known. FIGS. 7 and 8 show an example of a conventional screen device. This screen device 40 includes upper and lower horizontal frames 41, 42, a winding box 43 that forms one of the left and right vertical frames, a receiving frame 44 that forms the other vertical frame, a rectangular screen 45, a winding shaft 46 having one end in the left-right direction of the screen 45 attached thereto and both axial ends rotatably supported at the upper and lower ends of the winding box 43, and a movable frame 47 having the other end in the left-right direction of the screen 45 attached thereto. By horizontally pulling the movable frame 47 left and right, the building opening is configured to be opened and closed by the screen 45. The screen 45 includes a net-like screen body 45a, strip-shaped fastener tapes 48 provided at the upper and lower ends of the screen body 45a and extending in the left-right direction, and engaging elements 49 arranged in a row in the left-right direction at the tips of the fastener tapes 48. When the screen 45 is drawn out from the winding shaft 46, the engaging elements 49 are engaged with slits of a guide rail (not shown) held within the upper and lower horizontal frames 41, 42, so that the upper and lower ends of the screen 45 are held and can be stably opened and closed.

[0003] By the way, the engaging element 49 engaged with the slit of the guide rail bulges so as not to come out of the slit. When the screen 45 is wound up, the engaging elements 49 are wound while overlapping. In this case, there is a difference between the winding diameter of the engaging element 49 and the winding diameter of the screen main body 45a. Due to this difference in winding diameter, the engaging element 49 is sequentially displaced in the axial direction of the winding shaft 46, and as a result, the screen main body 45a is partially wrinkled 50. When the screen 45 is unwound in this state, wrinkles 50 remain on the screen main body 45a, resulting in a problem that the appearance is deteriorated.

[0004] In order to solve the above problems, Patent Document 1 discloses a screen device 1 having a net body (screen main body) 20 made of a net material, a fastener element (engaging element) 31 provided at the upper and lower ends of the screen main body 20 and engaged with a slit 17A formed in a guide rail 17, a fastener tape 32 connecting the engaging element 31 and the screen main body 20, and a rubber sheet 33 having a flat contact surface 33A joined to the side surface of the fastener tape 32. When the screen main body 20 is wound around the winding shaft 13A in the screen device 1, the flat contact surfaces 33A of the rubber sheets 33 overlap, so that the screen main body 20 is in a state of being spaced apart at a constant interval in the radial direction of the winding shaft 13A. Therefore, the above-mentioned displacement due to the overlapping of the engaging elements 31 is prevented.

[0005] However, in the screen device 1 described in Patent Document 1, in order to prevent the engaging elements 31 from overlapping each other, the screen main body 20 is wound in a state of being spaced apart at a constant interval in the radial direction of the winding shaft 13A. Therefore, its winding diameter increases, and there is a risk that the screen device 1 becomes large-sized.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] The technical problem of the present invention is to provide a screen device that can prevent the occurrence of wrinkles in the screen body even when the engaging elements overlap each other during winding of the screen and cause winding deviation.

Means for Solving the Problems

[0008] To solve the above problems, according to the present invention, there is provided a screen device for mounting on a building opening, the screen device including a rectangular screen for opening and closing the building opening, a winding shaft for winding the screen, to which one end portion in the opening and closing direction of the screen is attached, a movable frame to which the other end portion in the opening and closing direction of the screen is attached, and a guide rail disposed along the opening and closing direction for supporting the movable frame so as to be movable in the opening and closing direction. The guide rail is provided with a slit that opens on the screen side and extends in the opening and closing direction. The screen has, at both side ends extending in the opening and closing direction, The first end and The second end has, These first ends between The second end and

[0009] a screen body composed of a net body. At least at the first end portion of the first end portion and the second end portion, a fastening tape extending in the opening and closing direction, a plurality of engaging elements provided along the opening and closing direction at the tip of the fastening tape and slidably engaged with the slit, and a connecting tape extending in the opening and closing direction and made of a strip-shaped cloth for connecting the fastening tape and the screen body are provided. The connecting tape is provided, which is characterized in that it is more flexible than the fastening tape and the screen body. In the present invention, it is desirable that the connecting tape is a cloth woven in a twill weave.

[0010] In the present invention, the winding shaft has a main body portion around which the screen main body is wound and a small-diameter portion having a smaller diameter than the main body portion. The boundary between the main body portion and the small-diameter portion is on the connecting tape. In the small-diameter portion, it is desirable that the connecting tape, the fastener tape, and the engaging elements are wound.

[0011] The screen main body is preferably an insect net formed by plain-weaving a synthetic resin wire in a grid pattern.

Effect of the Invention

[0012] The screen device of the present invention is provided, at least at the first end among the first end and the second end along the opening and closing direction of the screen, with a fastener tape extending in the opening and closing direction, engaging elements provided at the tip of the fastener tape and provided in a plurality along the opening and closing direction, and a connecting tape made of a strip of cloth for connecting the fastener tape and the screen main body. This connecting tape is more flexible than the fastener tape and the screen main body. Therefore, when the screen is wound, even if the engaging elements cause a winding shift in the axial direction of the winding shaft as they overlap, the connecting tape shifts to absorb the axial displacement, so that the screen main body is not affected by the winding shift and the occurrence of wrinkles in the screen main body is prevented.

Brief Description of the Drawings

[0013] [[Figure 1]] It is a front view showing the screen device of the present invention. [[Figure 2]] It is a front view showing the state in which the screen is extended from the state of FIG. 1. [[Figure 3]] It is a cross-sectional view of FIG. 1. [[Figure 4]] It is an enlarged longitudinal sectional view showing the upper end portion of the screen. [[Figure 5]] It is an enlarged longitudinal sectional view showing the lower end portion of the screen. [[Figure 6]] It is a longitudinal sectional view of the screen device. [[Figure 7]] It is a front view showing a conventional screen device. [[Figure 8]] It is a front view showing a state where the screen is extended from the state of FIG. 7.

Mode for Carrying Out the Invention

[0014] The screen device according to the present invention will be described with reference to FIGS. 1-6. The above screen device 1 is for installation in a building opening, and includes upper and lower horizontal frames 2, 3, a winding box 4 that constitutes one of the left and right vertical frames, a receiving frame 5 that constitutes the other vertical frame, a rectangular screen 6 that opens and closes the above building opening, a winding shaft 7 to which one end in the opening and closing direction (left and right direction) of the screen 6 is attached and which is supported by the above winding box 4, and a movable frame 8 to which the other end in the left and right direction of the screen 6 is attached. By horizontally pulling the movable frame 8 left and right along the upper and lower horizontal frames 2, 3, the above screen 6 is fed out from the winding shaft 7 or wound around the winding shaft 7, thereby opening and closing the building opening.

[0015] One end in the left and right direction of the above upper and lower horizontal frames 2, 3 is connected to the upper and lower ends of the winding box 4, and the other end is connected to the upper and lower ends of the receiving frame 5. The above winding box 4 has brackets 4a, 4b at its upper and lower ends, and both axial ends of the winding shaft 7 are rotatably supported by these brackets 4a, 4b. Further, as shown in FIG. 3, a cover 4c is connected to the front surface of the winding box 4 so as to be openable and closable, and by opening the cover 4c, the winding shaft 7 inside the winding box 4 can be replaced.

[0016] The above winding shaft 7 is provided with a spring (not shown) inside it, and due to the biasing force of the spring, the screen 6 is wound around the winding shaft 7. The winding shaft 7 has a main body portion 7a provided at the central portion in the axial direction, and small diameter portions 7b, 7c provided at both axial ends and having a smaller diameter than the main body portion 7a.

[0017] As shown in FIGS. 4 and 5, the upper horizontal frame 2 is a U-shaped grooved profile with an opening 2a opening downward, and the edge of the opening 2a is configured as a pair of guide portions 2b, 2b protruding inwardly from each other. Similarly, the lower horizontal frame 3 is a U-shaped grooved profile with an opening 3a opening upward, and the edge of the opening 3a is configured as a pair of guide portions 3b, 3b protruding inwardly from each other. And, a pair of guide grooves 8a, 8a formed at the upper end portion of the movable frame 8 are engaged with the guide portions 2b, 2b of the upper horizontal frame 2, and a pair of guide grooves 8b, 8b formed at the lower end portion of the movable frame 8 are engaged with the guide portions 3b, 3b of the lower horizontal frame 3, whereby the upper and lower end portions of the movable frame 8 are guided.

[0018] Also, a pair of guide rails 9, 10 extending in the left-right direction are respectively disposed in the openings 2a, 3a of the upper and lower horizontal frames 2, 3. Slits 9a, 10a extending in the left-right direction are formed in the opposing surfaces facing each other on the screen 6 side of the guide rails 9, 10. Note that flange-like projecting edges 9b, 10b are formed on the guide rails 9, 10, and the guide rails 9, 10 are respectively supported by the upper and lower horizontal frames 2, 3 by engaging the edges 9b, 10b with inwardly projecting portions 2c, 3c formed at the groove bottom portions of the upper and lower horizontal frames 2, 3.

[0019] The movable frame 8 is a vertically extending profile in a vertical posture. As shown in FIG. 3, an attachment groove 8c that opens toward the winding box 4 is provided at one end of the movable frame 8 in the left - right direction. At the other end of the movable frame 8 in the left - right direction, a contact surface 8d that contacts the receiving frame 5 when the screen 6 is extended is provided. An attachment member 12 having a substantially U - shaped cross - section is elastically engaged with the attachment groove 8c. A vertically long slit 12a is formed inside the attachment member 12, and an engaging element 11 provided at the other end of the screen 6 in the left - right direction is engaged with this slit 12a, whereby the movable frame 8 and the screen 6 are connected. As shown in FIG. 6, one magnet piece 8e is attached to each of the upper and lower ends of the contact surface 8d. When the movable frame 8 contacts the receiving frame 5, the magnet piece 8e is magnetically attracted to a magnetic body (not shown) attached to the receiving frame 5, and thus the extended state of the screen 6 is maintained.

[0020] The screen 6 is provided with a rectangular screen body 13 composed of a net body between an upper end and a lower end extending along the left - right direction. This screen body 13 is configured as an insect - proof net formed by plain - weaving synthetic resin - made wire rods composed of warp and weft in a grid pattern.

[0021] At the upper end portion 6a of the screen 6, a first fastener tape 14 extending in the left - right direction, a first engaging element 15 provided in a plurality of rows along the opening - closing direction at the tip of the first fastener tape 14, and a first connecting tape 16 made of a strip of cloth that connects the first fastener tape 14 and the screen body 13 and extends in the opening - closing direction are provided. Similarly, at the lower end portion 6b of the screen 6, a second fastener tape 17 extending in the left - right direction, a second engaging element 18 provided in a plurality of rows along the opening - closing direction at the tip of the second fastener tape 17, and a second connecting tape 19 made of a strip of cloth that connects the second fastener tape 17 and the screen body 13 and extends in the opening - closing direction are provided.

[0022] On the above-mentioned first connecting tape 16, there is a boundary between the main body portion 7a of the winding shaft 7 and the upper small-diameter portion 7b. On the second connecting tape 19, there is a boundary between the main body portion 7a of the winding shaft 7 and the lower small-diameter portion 7c. And when the screen 6 is wound up, the screen main body 13 is wound around the main body portion 7a of the winding shaft 7, and the first fastener tape 14, the first engaging member 15, and the first connecting tape 16 are wound around the upper small-diameter portion 7b of the winding shaft 7, and the second fastener tape 17, the second engaging member 18, and the second connecting tape 19 are configured to be wound around the lower small-diameter portion 7c.

[0023] Also, the first engaging member 15 is slidably engaged with a slit 9a formed in the upper guide rail 9, and the second engaging member 18 is slidably engaged with a slit 10a formed in the lower guide rail 10. By this, the screen 6 The first end and the second end as the upper end portion 6a and the lower end portion 6b in is stably guided in a state of being prevented from coming off by the upper and lower guide rails 9, 10.

[0024] The first and second fastener tapes 14, 17 are elongated belt-like members made of a flexible synthetic resin. On the other hand, the first and second connecting tapes 16, 19 are made of a fiber fabric having a bending rigidity smaller than that of both the first and second fastener tapes 14, 17 and the screen main body 13, and are excellent in bending property and flexibility. Specifically, the first and second connecting tapes 16, 19 are formed by twill weaving in which the warp and weft are each composed of 3 or more threads, and diagonal weave patterns (herringbone or twill lines) 16a, 19a appear on the cloth surface. In the present embodiment, the cloth surfaces of the first and second connecting tapes 16, 19 are formed by a herringbone weave having a horizontally oriented V-shaped weave pattern with an acute angle in the left-right direction by two diagonal herringbone patterns 16a, 19a. Also, the first and second connecting tapes 16, 19 are woven such that the tips (convex sides) of the V shapes formed by the two herringbone patterns 16a, 19a both face the extending side (left direction in FIG. 1) of the screen 6 and are arranged in parallel.

[0025] As shown in Fig. 4, the widths (vertical lengths) of the first and second connecting tapes 16 and 19 are longer than the widths of the first and second fastener tapes 14 and 17, and are about twice the widths of the first and second fastener tapes 14 and 17. Regarding the connection between the first and second connecting tapes 16 and 19 and the screen body 13, one side surface in the thickness direction of the first and second connecting tapes 16 and 19 is fixed to the other surface in the thickness direction of the first and second fastener tapes 14 and 17 and the screen body 13 by an appropriate fixing method such as adhesion, sewing, or welding. Note that the upper end in the width direction of the first connecting tape 16 is Horizontal frame located within the opening 2a of 2, and its lower end is located below the upper horizontal frame 2. The lower end in the width direction of the second connecting tape 19 is Horizontal frame located within the opening 3a of 3, and its upper end is located above the lower horizontal frame 3. When the screen 6 is unwound from the winding shaft 7, the first and second connecting tapes 16 and 19 are exposed from the upper and lower horizontal frames 2 and 3.

[0026] As shown in Fig. 1, when the screen 6 of the screen device 1 having the above configuration is wound around the winding shaft 7, due to the difference between the winding diameters of the portions where the first and second engaging elements 15 and 18 provided at the tips of the first and second fastener tapes 14 and 17 overlap and the winding diameter of the portion where the screen body 13 overlaps, the first engaging element 15 will sequentially shift downward, and the second engaging element 18 will sequentially shift upward.

[0027] However, the first and second connecting tapes 16, 19 that connect the first and second fastener tapes 14, 17 and the screen body 13 are twill fabrics with less bending rigidity than the first and second fastener tapes 14, 17 and the screen body 13, and are excellent in flexibility and softness. The first and second connecting tapes 16, 19 absorb the vertical displacement caused by the displacement of the first and second engaging elements 15, 18 by being displaced, so that the vertical displacement is not transmitted to the screen body 13. As a result, even if wrinkles 20 occur in the portions of the first and second connecting tapes 16, 19, no wrinkles occur in the screen body 13, and when the screen 6 is unwound, the screen body 13 can be extended in a planar state. Further, since the first and second connecting tapes 16, 19 are made of twill fabric with low bending rigidity and excellent flexibility and softness as described above, even if displacement occurs and wrinkles 20 are generated when the screen 6 is wound up, in the extended state of the screen 6, the wrinkles 20 disappear and it returns to the original state.

[0028] In the present embodiment, a horizontal screen device in which the axis of rotation of the winding shaft 7 is vertical is shown, but the winding shaft 7 can also be arranged on the upper horizontal frame and configured as a vertical screen device in which the axis of rotation is horizontal. Further, in the screen device 1, guide rails 9, 10 are arranged in the upper and lower horizontal frames 2, 3, and the upper and lower ends of the screen 6 are guided by these guide rails 9, 10, but it is also possible that only one end is guided. In that case, for example, the lower horizontal frame 3 may be eliminated, and only the upper end portion 6a of the screen 6 may be provided with the fastener tape 14, the engaging element 15, and the connecting tape 16 so that only the upper end of the screen 6 is guided. Further, the first and second connecting tapes 16, 19 have a horizontal V-shaped woven pattern formed by two twill lines 16a, 16a on the cloth surface, but may also have a W-shaped woven pattern in which horizontal V-shaped woven patterns are vertically adjacent to each other by four twill lines.

Description of Reference Numerals

[0029] 1 Screen device 6 Screens 6a First End (Upper End) 6b Second End (Lower End) 7 Take-up Shaft 7a Main Body 7b, 7c Small-diameter Parts 8 Movable Frame 9 Guide Rail 9a Slit 10 Guide Rail 10a Slit 13 Screen Body 14 First Fastener Tape 15 First Engager 16 First Connecting Tape 16a Woven Pattern 17 Second Fastener Tape 18 Second Engager 19 Second Connecting Tape 19a Woven Pattern

Claims

1. A screen device for mounting on a building opening, The screen device includes a rectangular screen for opening and closing the building opening, a winding shaft to which one end in the opening and closing direction of the screen is attached for winding the screen, a movable frame to which the other end in the opening and closing direction of the screen is attached, and a guide rail arranged along the opening and closing direction for movably supporting the movable frame in the opening and closing direction. The guide rail is provided with a slit that opens to the screen side and extends in the opening and closing direction. The screen has a first end and a second end at both sides extending in the opening and closing direction, and a screen body composed of a net body is provided between the first end and the second end. At least at the first end of the first end and the second end, there are provided a fastener tape extending in the opening and closing direction, a plurality of engaging elements provided along the opening and closing direction at the tip of the fastener tape and slidably engaged with the slit, and a connecting tape extending in the opening and closing direction formed of a strip of cloth for connecting the fastener tape and the screen body. The connecting tape is characterized by being more flexible than the fastener tape and the screen body. A screen device.

2. The screen device according to claim 1, wherein the connecting tape is a cloth woven in a twill weave.

3. The screen device according to claim 2, wherein the woven pattern formed by the warp and weft of the connecting tape is formed in a herringbone twill weave having an acute-angled horizontal V shape in the opening and closing direction.

4. The winding shaft has a main body part around which the screen body is wound and a small-diameter part having a smaller diameter than the main body part. The boundary between the main body part and the small-diameter part is on the connecting tape. In the small-diameter part, the connecting tape, the fastener tape, and the engaging elements are wound. The screen device according to any one of claims 1 to 3.

5. The screen device according to any one of claims 1 to 4, wherein the screen body is an insect-proof net formed by plain-weaving synthetic resin wires in a lattice pattern.

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