Screen to be fitted to screen frame and structure to fit screen to screen frame

Abstract

To easily spread a screen to which adequate tension is applied on a screen frame.SOLUTION: Vertical fitting members 8, 8 fitted to left and right vertical sides 1a, 1b of a screen 1 and horizontal fitting members 9, 9 fitted to upper and lower horizontal sides 1c, 1d have tabular plate parts 10, 20 on which pairs of parallel elastic engaging pieces 12a, 12b, 22a, 22b are formed and belt-like fitting parts 11, 21 to be fitted to the screen 1. An elastic bending part 25 that elastically bends and adds tension to the screen is formed on the fitting part. The screen 1 to which tension is applied by the elastic bending part 25 can be spread on the screen frame 3 by engaging the pair of elastic engaging pieces 12a, 12b of the vertical fitting members 8, 8 and the horizontal fitting members 9, 9 with engaging grooves 6, 6 of left and right vertical frame rods 3a, 3b of the screen frame 3 and engaging the pair of elastic engaging pieces 22a, 22b of the horizontal fitting members 9, 9 with engaging grooves 7, 7 of upper and lower horizontal frame rods 3c, 3d of the screen frame 3.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a screen such as a insect screen or a privacy sheet for attachment to a screen frame attached to a building opening, and an attachment structure of the screen to the screen frame.

Background Art

[0002] It has been widely practiced conventionally to stretch a screen such as an insect screen or a privacy sheet on a screen frame attached to a building opening. When stretching a screen on such a screen frame, conventionally, as described in Patent Document 1 for example, a method has been used in which a net pressing tube is pushed and fixed together with the screen into an attachment groove formed in the screen frame using a tool for stretching the net.

[0003] However, such a method requires tools for stretching the net, net pressing tubes, etc. in addition to the screen, so those tools must be prepared in advance, which takes time and effort. Moreover, it is not easy to stretch the screen in a tensioned state using the tools and tubes so that wrinkles or slack do not occur, and a certain degree of skill is required, so not everyone could easily stretch the screen. In particular, it was very difficult to stretch the screen in a non-slack state by applying appropriate tension to the screen.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The technical problem of the present invention is to enable the screen to be easily and securely stretched over a screen frame with appropriate tension, without the need for tools for stretching the screen or screen-holding tubes. [Means for solving the problem]

[0006] To solve the aforementioned problems, the present invention provides a screen for being permanently stretched over a rectangular screen frame consisting of left and right vertical frame rods and upper and lower horizontal frame rods. The screen has left and right vertical mounting members attached to the left and right vertical sides, and upper and lower horizontal mounting members attached to the upper and lower horizontal sides. The vertical and horizontal mounting members each have a plate-shaped portion with a pair of parallel elastic locking pieces and a strip-shaped mounting portion for attachment to the screen. The mounting portion has an elastic bending portion that elastically bends and extends when the screen is stretched to apply tension to the screen. The pair of elastic locking pieces formed on the left and right vertical mounting members are locked into the locking grooves of the left and right vertical frame rods of the screen frame, and the pair of elastic locking pieces formed on the upper and lower horizontal mounting members are locked into the locking grooves of the upper and lower horizontal frame rods of the screen frame. This configuration allows the screen to be stretched onto the screen frame with tension applied in the left-right and up-down directions by the elastic bending and extending of the elastic bending portion.

[0007] Furthermore, the present invention provides a mounting structure for permanently attaching a screen to a rectangular screen frame consisting of left and right vertical frame rods and upper and lower horizontal frame rods. In the mounting structure, locking grooves are formed on the inward-facing surfaces of the left and right vertical frame rods of the screen frame, and on the inward-facing surfaces of the upper and lower horizontal frame rods, respectively. The screen has left and right vertical mounting members attached to the left and right vertical sides of the screen, and upper and lower horizontal mounting members attached to the upper and lower horizontal sides of the screen. The vertical and horizontal mounting members have a plate-shaped portion on which a pair of parallel elastic locking pieces are formed, and a strip-shaped mounting portion for attachment to the screen. The screen is provided with elastic bending and stretching sections that elastically bend and stretch when the screen is tensioned, thereby applying tension to the screen. A pair of elastic locking pieces formed on the left and right vertical mounting members are locked into locking grooves on the left and right vertical frame rods of the screen frame, and a pair of elastic locking pieces formed on the upper and lower horizontal mounting members are locked into locking grooves on the upper and lower horizontal frame rods of the screen frame. This allows the screen to be attached to the screen frame with tension applied in the left-right and up-down directions by the elastic bending and stretching of the elastic bending and stretching sections.

[0008] Furthermore, the present invention provides a screen device in which a screen is stretched in a fixed state over a rectangular screen frame consisting of left and right vertical frame rods and upper and lower horizontal frame rods. In the screen device, locking grooves are formed on the inward-facing surfaces of the left and right vertical frame rods of the screen frame, and on the inward-facing surfaces of the upper and lower horizontal frame rods, respectively. The screen has left and right vertical mounting members attached to the left and right vertical sides of the screen, and upper and lower horizontal mounting members attached to the upper and lower horizontal sides of the screen. The vertical and horizontal mounting members each have a plate-shaped portion on which a pair of parallel elastic locking pieces are formed, and a strip-shaped mounting portion for attachment to the screen. The screen is provided with elastic bending and stretching sections that elastically bend and stretch when the screen is being tensioned, thereby applying tension to the screen. A pair of elastic locking pieces formed on the left and right vertical mounting members are locked into locking grooves on the left and right vertical frame rods of the screen frame, and a pair of elastic locking pieces formed on the upper and lower horizontal mounting members are locked into locking grooves on the upper and lower horizontal frame rods of the screen frame. As a result, the screen is tensioned in the left-right and up-down directions by the elastic bending and stretching of the elastic bending and stretching sections.

[0009] In the present invention, the elastic bending portion can be formed by giving a bending tendency to a part of the mounting portion.

[0010] Furthermore, in the present invention, the pair of elastic locking pieces in the vertical mounting member and the horizontal mounting member each have a leg portion connected to the plate portion and a head portion connected to the tip of the leg portion in an inclined manner relative to the leg portion, the head portion locking into the locking groove of the screen frame. In this case, it is desirable that the two heads of the pair of elastic locking pieces formed on the vertical or horizontal mounting member are inclined in the same direction, and that of the two heads, the base end of the head whose tip is inclined toward the inside of the locking groove is formed by extending the head in the inclined direction, and that the jaw portion is able to lock onto the groove edge of the locking groove.

[0011] Furthermore, in the present invention, it is desirable that one or both of the left and right vertical mounting members and the upper and lower horizontal mounting members are provided with locking piece notches in which the pair of elastic locking pieces are not formed on the plate portion, by partially cutting off both ends in the longitudinal direction of the pair of elastic locking pieces. [Effects of the Invention]

[0012] According to the present invention, by engaging a pair of elastic locking pieces of vertical mounting members attached to the left and right vertical sides of the screen with locking grooves of the left and right vertical frame rods of the screen frame, and by engaging a pair of elastic locking pieces of horizontal mounting members attached to the upper and lower horizontal sides of the screen with locking grooves of the upper and lower horizontal frame rods of the screen frame, the screen can be easily stretched onto the screen frame without using any tools for stretching the screen or screen-holding tubes. Moreover, since tension in the vertical direction is automatically applied to the screen by the elastic bending and stretching of the elastic bending and stretching parts formed on the mounting portions of the horizontal mounting members, and tension in the horizontal direction is also automatically applied by the elastic bending and stretching of the elastic bending and stretching parts formed on the mounting portions of the vertical mounting members, the screen can be easily and reliably stretched without wrinkles or sagging as a whole. [Brief explanation of the drawing]

[0013] [Figure 1] This is a front view showing the screen according to the present invention stretched over a screen frame. [Figure 2] This is a cross-sectional view along line II-II in Figure 1. [Figure 3] This is a cross-sectional view along line III-III in Figure 1. [Figure 4] This is a magnified view of a portion of Figure 2. [Figure 5] This is a partial enlargement view similar to Figure 4, which shows different configuration examples of the vertical mounting member. [Figure 6] This is a magnified view of the third section. [Figure 7] This is a partial enlargement view similar to Figure 6, showing different configuration examples of the lateral mounting member. [Figure 8]It is a front view showing the state before stretching the screen of FIG. 1 onto the screen frame immediately before stretching. [Figure 9] It is a longitudinal sectional view showing an example in which the screen according to the present invention is attached to a sliding window. [Figure 10] It is a cross-sectional view of FIG. 9.

Mode for Carrying Out the Invention

[0014] FIGS. 9 and 10 show an example in which an insect net 1, which is a kind of screen according to the present invention, is fitted into a screen frame 3 formed in a sash 2 of a sliding window and stretched in a fixed state.

[0015] The sliding window is a window in which a shoji 4 attached to the sash 2 is pushed out to the outdoor side around a pivot axis (not shown) by operating a handle 5 and opened. There are a horizontal sliding window in which the pivot axis faces the horizontal direction and a vertical sliding window in which the pivot axis faces the vertical direction. However, the screen 1 is not limited to such a sliding window, and can be attached to a window that opens and closes the shoji 4 by operating a handle 5 or the like, such as an opening window having a plurality of horizontally sliding shojis, a hinged window that rotates the shoji 4 with hinges or shaft fittings, or a projecting window that projects the shoji 4 to the outdoor side with the upper part of the window frame as a fulcrum.

[0016] As is clear from FIGS. 1, 9 and 10, the screen frame 3 is formed in a rectangular frame shape by left and right vertical frame bars 3a, 3b and upper and lower vertical frame bars 3c, 3d made of an aluminum alloy, and is disposed at a position on the indoor side of the shoji 4 of the building opening.

[0017] As is clear from Figure 2, vertical locking grooves 6 for locking vertical mounting members 8 attached to the left and right vertical sides 1a and 1b of the screen 1 are formed on the mutually opposing inward-facing surfaces 3e of the left and right vertical frame rods 3a and 3b, extending along the entire length of the vertical frame rods 3a and 3b. Similarly, as is clear from Figure 3, horizontal locking grooves 7 for locking horizontal mounting members 9 attached to the upper and lower horizontal sides 1c and 1d of the screen 1 are formed on the mutually opposing inward-facing surfaces 3e of the upper and lower vertical frame rods 3c and 3d, extending along the entire length of the horizontal frame rods 3c and 3d. In the following explanation, the vertical locking groove 6 and the horizontal locking groove 7 may also be simply referred to as "locking grooves."

[0018] As shown in Figure 1, the screen 1 has a rectangular shape when viewed from the front. The vertical mounting members 8, which are integrally molded from a rubber-elastic elastomer, are attached to the left and right vertical sides 1a and 1b along their entire lengths, and the horizontal mounting members 9, which are integrally molded from a rubber-elastic elastomer, are attached to the top and bottom horizontal sides 1c and 1d of the screen 1 along their entire lengths.

[0019] The left and right vertical mounting members 8, 8 attached to the left and right vertical sides 1a, 1b of the screen 1 have the same shape as each other, and as is clear from Figure 2, they are attached to the left and right vertical sides 1a, 1b in directions that are reversed left and right. The configuration of the vertical mounting member 8 will be explained with reference to the left vertical mounting member 8 shown as a representative example in Figure 4. This vertical mounting member 8 has a narrow, thin plate portion 10 that extends along its entire length, and a strip-shaped mounting portion 11 for attaching the vertical mounting member 8 to the vertical side 1a of the screen 1. A pair of elastic locking pieces 12a, 12b are formed on the outer surface 10a of the plate portion 10 facing the vertical frame rod 3a, and these elastic locking pieces extend parallel to the length direction of the plate portion 10, and elastically lock into the vertical locking groove 6 formed in the vertical frame rod 3a.

[0020] The pair of elastic locking pieces 12a, 12b each have a leg portion 13 connected to the outer surface 10a of the plate portion 10, and head portions 14a, 14b connected to the tip of the leg portion 13 in an inclined position relative to the leg portion 13, with the head portions 14a, 14b engaging with the groove edge 6a of the vertical locking groove 6, and the two head portions 14a, 14b formed on the pair of elastic locking pieces 12a, 12b are inclined in the same direction. Furthermore, of the two head portions 14a, 14b, a jaw portion 14c is formed at the base end of one of the elastic locking pieces 12a, with its tip facing inward into the vertical locking groove 8, by extending the head portion 14a in the inclined direction, and this jaw portion 14c engages with the groove edge 6a of the vertical locking groove 6.

[0021] When engaging the pair of elastic locking pieces 12a and 12b into the vertical locking groove 6 of the vertical frame rod 3a, the heads 14a and 14b of the pair of elastic locking pieces 12a and 12b are inserted into the vertical locking groove 6 and then firmly pushed into the locking groove 6. When this is done, the pair of elastic locking pieces 12a and 12b are elastically deformed in a direction that narrows the distance between them, and then the entire heads 14a and 14b are inserted into the vertical locking groove 6 and return to their original state, so that the heads 14a and 14b are elastically engaged with the groove edge 6a of the vertical locking groove 6. At this time, the plate portion 10 abuts against the inward surface 3e of the vertical frame rods 3a and 3b, thereby blocking the vertical locking groove 6 and preventing the formation of gaps into which insects can enter.

[0022] Furthermore, the base end portion 11b of the mounting portion 11 is surface-bonded to the vertical side 1a of the screen 1 by a method such as heat welding, and the tip portion 11a of the mounting portion 11 is connected to a position near one end in the width direction of the inner surface 10b of the plate portion 10. An elastic bending portion 15 is formed in the mounting portion 11 by making a part of it an inclined portion that can be elastically bent and extended. When the screen 1 is stretched over the screen frame 3, this elastic bending portion 15 bends and extends elastically with the tip portion 11a of the mounting portion 11 as a fulcrum, thereby applying tension to the screen 1 in the left-right direction.

[0023] The elastic bending portion 15 is formed by giving a part of the mounting portion 11 a bending characteristic as an inclined portion, but as shown in Figure 5, it can also be formed by giving a part of the mounting portion 11 a bending characteristic such as an S shape or a wave shape. Furthermore, the tip portion 11a of the mounting portion 11 may be connected to the inner surface 10b of the plate portion 10 at its center in the width direction.

[0024] On the other hand, the upper and lower horizontal mounting members 9, 9 attached to the upper and lower horizontal sides 1c, 1d of the screen 1 have the same shape as each other, and as is clear from Figure 3, they are attached to the upper and lower horizontal sides 1c, 1d in an inverted orientation relative to each other. The configuration of the horizontal mounting member 9 will be explained with reference to the upper horizontal mounting member 9 shown as a representative example in Figure 6. The horizontal mounting member 9 has a narrow, thin plate portion 20 that extends along its entire length and a strip-shaped mounting portion 21 for attachment to the upper horizontal side 1c of the screen 1. A pair of elastic locking pieces 22a, 22b are formed on the outer surface 20a of the plate portion 20 facing the horizontal frame rods 3c, 3d, so as to extend parallel to the length direction of the plate portion 20 and elastically lock into the horizontal locking grooves 7 of the horizontal frame rods 3c.

[0025] The pair of elastic locking pieces 22a, 22b each have a leg portion 23 connected to the outer surface 20a of the plate portion 20, and head portions 24a, 24b connected to the tip of the leg portion 23 in an inclined position relative to the leg portion 23, with the head portions 24a, 24b engaging with the groove edge 7a of the lateral locking groove 7, and the two head portions 24a, 24b formed on the pair of elastic locking pieces 22a, 22b are inclined toward each other in the same direction.

[0026] Of the two heads 24a and 24b, one of the elastic locking pieces 22a has a head 24a whose tip is inclined toward the inside of the longitudinal locking groove 7. At the base end of the head 24a, a locking jaw portion 24c is formed by extending the head 24a in the inclined direction, and this jaw portion 24c is designed to lock onto the groove edge 7a of the transverse locking groove 7.

[0027] When the pair of elastic locking pieces 22a and 22b are locked into the horizontal locking groove 7 of the horizontal frame rod 3c, the heads 24a and 24b of the pair of elastic locking pieces 22a and 22b are inserted into the vertical locking groove 7 and then firmly pushed into the locking groove 7. When this is done, the pair of elastic locking pieces 22a and 22b are elastically deformed in a direction that narrows the distance between them, and then the entire heads 24a and 24b are returned to their original state as they are inserted into the vertical locking groove 7, and the heads 24a and 24b are elastically locked into the groove edge 7a of the vertical locking groove 7. At this time, the plate portion 20 abuts against the inward surface 3e of the horizontal frame rod 3c, thereby blocking the horizontal locking groove 7 and preventing the formation of a gap through which insects can enter.

[0028] Furthermore, the base end portion 21b of the mounting portion 21 is surface-bonded to the end of the screen 1 by a method such as heat welding, and the tip portion 21a of the mounting portion 21 is connected to the inner surface 20b of the plate portion 20 at a position near one end in the width direction. The mounting portion 21 has an elastically flexible portion 25 formed by making a part of it an elastically flexible inclined portion, and when the screen 1 is stretched over the screen frame 3, tension in the vertical direction is applied to the screen 1 by the flexing and extending of this elastically flexible portion 25.

[0029] The elastic bending portion 25 is formed by giving a bending tendency to a part of the mounting portion 21 as an inclined portion, but as shown in Figure 7, it can also be formed by bending a part of the mounting portion 21 into an S shape, a wave shape, or the like to give it a bending tendency. Furthermore, the tip portion 21a of the mounting portion 21 may be connected to the inner surface 20b of the plate portion 20 at its center in the width direction.

[0030] As described above, by providing elastic bending and stretching portions 15 and 25 on the mounting portions 11 of the left and right vertical mounting members 8, 8 and the mounting portions 21 of the upper and lower horizontal mounting members 9, 9 of the screen 1, when the screen 1 is stretched onto the screen frame 3, tension in the left-right and up-down directions is automatically applied to the screen 1 by the elastic bending and stretching of the elastic bending and stretching portions 15, 25. As a result, the screen 1 can be easily stretched onto the screen frame 3 without wrinkles, sagging, or other issues.

[0031] Here, when stretching the screen 1 having the above configuration onto the screen frame 3, for example as shown in Figures 6 and 8, first, a pair of elastic locking pieces 22a, 22b formed on the upper and lower horizontal mounting members 9, 9 are pushed into the horizontal locking grooves 7, 7 of the upper and lower vertical frame rods 3c, 3d, and the two heads 24a, 24b are elastically locked to the groove edges 7a of the horizontal locking grooves 7. Then, a pair of elastic locking pieces 12a, 12b formed on the left and right vertical mounting members 8, 8 are pushed into the left and right vertical frame rods 3, 3, as shown in Figure 4. The heads 14a and 14b are pushed into the vertical locking grooves 6, 6 of a and 3b to elastically lock them into the groove edges 6a of the vertical locking grooves 6. However, if a pair of elastic locking pieces 12a and 12b are formed along the entire length of the left and right vertical mounting members 8, 8, the elastic locking pieces 12a and 12b come into strong contact with the vertical frame rods 3a and 3b near both the upper and lower ends of the vertical mounting members 8, 8, causing them to deform irregularly, making it difficult to push the elastic locking pieces 12a and 12b into the vertical locking grooves 6, 6.

[0032] Therefore, in the present invention, as shown in Figures 1 and 8, the pair of elastic locking pieces 12a and 12b are partially cut away near both ends in the longitudinal direction of the left and right vertical mounting members 8, 8, i.e., near both the upper and lower ends, thereby providing locking piece notches 16 in which the pair of elastic locking pieces 12a and 12b are not formed in the plate portion 10.

[0033] As a result, the screen 1 can be easily stretched over the screen frame 3 simply by pushing the elastic locking pieces 12a and 12b, formed between the locking piece notches 16 and 16, into the vertical locking grooves 6 and 6. At this time, in the locking piece notches 16, the plate portion 10 abuts against the inward-facing surfaces of the vertical frame rods 3a and 3b, closing the vertical locking grooves 6, so that no gap is formed through which insects such as mosquitoes can enter.

[0034] The locking notches 16 may be formed at both ends of the upper and lower horizontal mounting members 9, 9 instead of on the left and right vertical mounting members 8, 8, or they may be formed on both the left and right vertical mounting members 8, 8 and the upper and lower horizontal mounting members 9, 9. [Explanation of Symbols]

[0035] 1 screen 1a,1b Vertical side 1c,1d horizontal side 3 screen frames 3a,3b Vertical frame rod 3c,3d horizontal frame rod 3e Introvert 6. Vertical locking groove 7. Lateral locking groove 8. Vertical mounting member 9. Horizontal mounting member 10,20 Plate section 11,21 Mounting part 11a,21a Tip 11b,21b Base end 12a, 22a Elastic locking piece 12b, 22b Elastic locking piece 13,23 Legs 14a,14b Head 14c, 24c jaw 15,25 Elastic flexion section 16 Locking notch 24a,24b Head

Claims

1. A screen to be fitted and stretched in a rectangular screen frame consisting of left and right vertical bars and top and bottom horizontal bars, The screen has left and right vertical mounting members attached to the left and right vertical sides, and upper and lower horizontal mounting members attached to the upper and lower horizontal sides, the vertical mounting members and the horizontal mounting members having a plate-like plate portion on which a pair of parallel elastic locking pieces are formed, and a band-shaped mounting portion for mounting to the screen, the mounting portion being formed with an elastic bending and extension portion that elastically bends and extends to impart tension to the screen when the screen is stretched, the pair of elastic locking pieces formed on the left and right vertical mounting members being engaged with the locking grooves of the left and right vertical frame rods of the screen frame, and the pair of elastic locking pieces formed on the upper and lower horizontal mounting members being engaged with the locking grooves of the upper and lower horizontal frame rods of the screen frame, so that the screen can be stretched on the screen frame with tension in the left-right and up-down directions imparted by the elastic bending and extension of the elastic bending and extension portions. A screen attached to a screen frame.

2. 2. The screen according to claim 1, wherein the elastic bending portion is formed by imparting a bending tendency to a part of the mounting portion.

3. A screen as described in claim 1 or 2, characterized in that a pair of elastic locking pieces on the vertical mounting member and the horizontal mounting member have a leg portion connected to the plate portion and a head portion connected to the tip of the leg portion at an angle relative to the leg portion, and the head portion engages with the locking groove of the screen frame.

4. 4. The screen according to claim 3, wherein two heads of a pair of elastic engagement pieces formed on said vertical mounting members or said horizontal mounting members are inclined in the same direction.

5. A screen as described in claim 4, characterized in that of the two heads, a jaw portion is formed at the base end of the head whose tip is inclined toward the inside of the engagement groove by extending the head in the inclined direction, and the jaw portion engages with the groove edge of the engagement groove.

6. A screen as described in claim 1 or 2, characterized in that either or both of the left and right vertical mounting members and the upper and lower horizontal mounting members have locking piece notches in which the pair of elastic locking pieces are not formed in the plate portion by partially cutting out both longitudinal ends of the pair of elastic locking pieces.

7. A screen mounting structure in which the screen according to any one of claims 1 to 6 is mounted in a fixed state to a rectangular screen frame consisting of left and right vertical frame rods and upper and lower horizontal frame rods, The locking grooves are formed on the mutually opposing inward surfaces of the left and right vertical frame rods of the screen frame, and on the mutually opposing inward surfaces of the upper and lower horizontal frame rods, The pair of elastic locking pieces of the left and right vertical mounting members are engaged with the locking grooves of the left and right vertical frame rods, and the pair of elastic locking pieces of the upper and lower horizontal mounting members are engaged with the locking grooves of the upper and lower horizontal frame rods, so that the screen can be attached to the screen frame in a state in which tension in the left-right and up-down directions is applied by elastic bending and extension of the elastic bending and extension parts. A structure for mounting a screen to a screen frame.

8. A screen device comprising a rectangular screen frame having left and right vertical bars and upper and lower horizontal bars, and a screen according to any one of claims 1 to 6, which is fitted and stretched in a fixed state, The locking grooves are formed on the mutually opposing inward surfaces of the left and right vertical frame rods of the screen frame, and on the mutually opposing inward surfaces of the upper and lower horizontal frame rods, The pair of elastic locking pieces of the left and right vertical mounting members are engaged with the locking grooves of the left and right vertical frame rods, and the pair of elastic locking pieces of the upper and lower horizontal mounting members are engaged with the locking grooves of the upper and lower horizontal frame rods, so that the screen is tensioned on the screen frame with tension in the left-right and up-down directions imparted by elastic bending and extension of the elastic bending and extension parts. A screen device comprising:

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