JP7697665B2 - Insect screen, screen door device using same, and method for attaching and detaching insect screen - Google Patents

Description

The present invention relates to an insect screen for attaching to a screen mounting frame installed at a building opening, a screen door device formed by attaching the insect screen to the screen mounting frame, and a method for attaching and detaching the insect screen, and in particular to an insect screen that can be attached without slack while applying appropriate tension to the net material, and a screen door device and a method for attaching and detaching the insect screen that use the same.

In an insect-proof net that can be attached to a net mounting frame (mounting frame) installed in a building opening with the appropriate tension, for example, the insect-proof net described in Patent Document 1 has rod-shaped fixing members attached to two of the four sides (top, bottom, left and right) of the net material, either the top, bottom or left and right, and these fixing members are pushed into mounting grooves in the mounting frame to engage the two sides, thereby fixing the two sides to the mounting frame. Then, with the other two sides inserted into the mounting grooves, a clamping member is elastically pushed into the mounting grooves, thereby clamping them between the clamping member and the net material mounting frame. Thus, the net material is stretched over the net material mounting frame.

However, the insect screen described in Patent Document 1 requires that the netting material be cut precisely to a size that matches the dimensions of the mounting frame. If these dimensions are not precise, minute dimensional adjustments cannot be made, and it is difficult to tension the netting material on the mounting frame without sagging or wrinkling. In addition, the insect screen described in Patent Document 1 requires the time and effort of attaching and detaching the fixing members to the mounting frame.

Patent No. 5702040

The technical objective of this invention is to provide an insect screen that can be easily attached to a mounting frame without slack or wrinkles in the net material, without requiring strict dimensional accuracy, a screen door device using the same, and a method for attaching and detaching the insect screen.

In order to solve the above technical problems, the present invention provides an insect screen for attaching to a hollow net mounting frame provided at an opening in a building, the insect screen comprising a rectangular flexible net material having left and right vertical sides and top and bottom horizontal sides, and a first fastening body attached to each of the left and right vertical sides or the top and bottom horizontal sides of the net material, the first fastening body comprising a fastening base having a base end attached to the net material, The locking base has a pair of locking pieces that are erected from both side surfaces of the tip of the locking base and are for engaging with the net mounting frame when the net is accommodated in the net mounting frame through a slit-shaped opening, and the pair of locking pieces are elastic and extend in a direction away from each of the both side surfaces as they proceed from the tip of each of the both side surfaces of the locking base toward the base end , and the pair of locking pieces have their respective tip portions that can slidably abut against the inner surface of the net mounting frame and are connected to the locking base so that the inclination angle can be freely changed, thereby applying tension to the net material through the elastic restoring force of the pair of locking pieces .

In this case, the first retaining body is preferably provided continuously between both longitudinal ends of the left and right vertical sides or the top and bottom horizontal sides of the net material.

Preferably, the pair of locking pieces are arranged symmetrically with respect to the locking base. Furthermore, preferably, the pair of locking pieces extend with an acute bending angle relative to the locking base. Preferably, the pair of locking pieces have the same length and cross-sectional shape.

Furthermore, the screen door device of the present invention is a screen door device comprising an insect screen as described in any one of claims 1 to 5 attached to a screen mounting frame provided in the building opening, wherein the screen mounting frame has a pair of support frame rods arranged opposite the first fastening bodies attached to each of the left and right vertical sides or the top and bottom horizontal sides of the screen material, the support frame rods having an inner wall arranged opposite the first fastening bodies, the opening formed in the inner wall, and a groove communicating with the opening, and the first fastening body of the insect screen is accommodated in the groove through the opening of the support frame rods.

In this case, more preferably, the pair of support frame rods are removably attached to the building opening.

Moreover, preferably, the net mounting frame has a pair of side frame rods extending between one end and the other end in the longitudinal direction of each of the pair of support frame rods, and second locking bodies are attached to the left and right vertical sides or the top and bottom horizontal sides of the net material to which the first locking bodies are not attached, and the second locking bodies are detachably attached to the side frame rods.

The method of attaching and detaching an insect screen according to the present invention is a method of attaching and detaching an insect screen to and from the screen mounting frame of the screen door device described in claim 8, in which, when removing the insect screen attached to the screen mounting frame, the second fastener is removed from the side frame rod, and then the pair of support frame rods are removed from the building opening, and the insect screen is slid relative to the pair of support frame rods to remove it from one longitudinal end of the pair of support frame rods, and when attaching the insect screen to the screen mounting frame, the insect screen is slid onto the pair of support frame rods, and then the pair of support frame rods are attached to the building opening, and then the second fastener is attached to the side frame rods.

As described above, the present invention provides an insect screen that can be easily attached to a mounting frame without slack or wrinkles in the net material, without requiring strict dimensional accuracy, as well as a screen door device and a method for attaching and detaching the insect screen that use the same.

1 is a vertical cross-sectional view of an insect screen according to the present invention attached to a screen mounting frame of a building opening. 2 is a cross-sectional view corresponding to the II-II arrow view of FIG. 1. 1 is a front view of an insect screen according to the present invention. 4A is a cross-sectional view of the insect screen taken along the line IV-IV in FIG. 3, and FIG. 4B is an enlarged view of the essential portion of the portion viewed from the arrow A in FIG. 3A is a cross-sectional view of the insect screen taken along the line V-V in FIG. 3, and FIG. 3B is an enlarged view of the main part of the portion taken along the line B in FIG. 11 is a cross-sectional view for explaining the function of a pair of locking pieces of the locking body. FIG. 11 is a cross-sectional view for explaining the function of a pair of locking pieces. FIG. 11 is a cross-sectional view for explaining the function of a pair of locking pieces. FIG. FIG. 2 is a front view of a screen door device consisting of an insect screen and a screen mounting frame. FIG. 3 is a plan view of the screen door device of FIG. 2. FIG. 2 is a vertical cross-sectional view of the screen door device shown in FIG. 1 . FIG. 11 is a partial cross-sectional view for explaining how the net material is clamped from above and below. 11 is a vertical cross-sectional view showing a modified example of the screen door device according to the present invention attached to an opening in a building. FIG. 14 is a cross-sectional view corresponding to the XIV-XIV arrow view of FIG. 13.

Figures 1 and 2 show an example of a screen door device 1 in which the insect screen 10 according to the present invention can be easily attached to a screen mounting frame 40 (mounting frame) provided at a building opening W without the screen material 11 being loose or wrinkled.

As shown in Figures 1 and 2, the building opening W is configured as a sliding window, and an aluminum alloy sash 60 is attached to the building opening W. A paper screen 70 is attached to the sash 60, and by operating a handle 71, the paper screen 70 is pushed outward to open the building opening W. The sash 60 is attached to a mounting portion 72 formed on the indoor side, and a net mounting frame 40 is provided on the outdoor side of the sash 60. Note that the location to mount the insect screen 10 is not limited to a sliding window, and it can also be mounted on various types of windows that open and close the paper screen 70 by operating a handle, such as casement windows and projection windows.

The screen mounting frame 40 is formed into a rectangle by combining left and right vertical frame rods (support frame rods) 41, 41 with a square cylindrical cross section and upper and lower horizontal frame rods 50, 50 (side frame rods) with a U-shaped cross section. In this embodiment, the vertical frame rods 41 are removably attached to the sash 60, and the horizontal frame rods 50 are formed on the sash 60.

The insect screen 10, which will be described in detail later, is attached to the screen mounting frame 40 by engaging the left and right first fastening bodies 13 and the upper and lower second fastening bodies 20 of the insect screen 10 in the grooves 41a, 50a (Figs. 10 and 11 ) formed in the left and right vertical frame rods 41, 41 and the upper and lower horizontal frame rods 50, 50 of the screen mounting frame 40. In the following description, "up and down" and "left and right" refer to the directions when the building opening W is viewed from the inside of the room, and "front" refers to the outside and "rear" refers to the inside of the room.

As shown in Figures 3 to 5, the insect screen 10 has a rectangular, flexible mesh material 11 with left and right vertical sides 11a, 11a and top and bottom horizontal sides 11b, 11b, and a first fastening body 13 and a second fastening body 20 attached to the left and right vertical sides 11a1 and top and bottom horizontal sides 11b1 of the mesh material 11, respectively.

The mesh material 11 can be made of fibers such as chemical fibers or metal fibers, but is preferably made of chemical fibers such as polyester, polypropylene, or glass fiber, similar to the mesh material 11 in a normal screen door. In the illustrated example, the length of the vertical direction (up and down direction) of the mesh material 11 is longer than the length of the horizontal direction (left and right direction). In other words, the length of the vertical side of the mesh material 11 is longer than the length of the horizontal side.

As shown in FIG. 4(b), the first locking body 13 is made of a synthetic resin material and has elasticity, and has a locking base 14 attached to the left and right vertical side portions 11a1 of the net material 11, and a pair of locking pieces 15 that extend from the side surfaces 14a on both sides of the locking base 14 in a direction away from the side surfaces 14a as they proceed toward the net material 11. The locking base 14 has a rectangular shape that extends continuously between the upper and lower ends of the net material 11, and is fixed to the side surfaces of the vertical side portions 11a1 of the net material 11 by welding or the like.

As shown in FIG. 3, the pair of locking pieces 15, 15 are formed between a position below the upper end of the net material 11 and a position above the lower end, and are shorter in the vertical direction than the locking base 14. As shown in FIG. 4(b) and FIG. 6, the locking pieces 15, 15 are arranged symmetrically with respect to the locking base 14, and are arranged at an acute angle relative to the locking base 14 (hereinafter referred to as the "deflection angle θ").

These locking pieces 15, 15 extend from the tip connected to the locking base 14 perpendicular to the locking base 14 and are bent toward the net material 11. That is, the locking pieces 15, 15 are configured with a locking piece base 15a extending perpendicular to the locking base 14 and an arm 15b extending diagonally from the locking piece base 15a, and the length L2 of the locking piece base 15a is shorter than that of the arm 15b. Therefore, the arm 15b can bend in the direction (front-back direction) away from and toward the locking base 14 with the connection position P1 with the locking piece base 15a as a fulcrum, while the locking piece base 15a has increased rigidity and its bending deformation in the left-right direction is relatively small.

The arms 15b of the locking pieces 15 have the same longitudinal length L1 and cross-sectional shape. In this embodiment, the cross section of the arms 15b is formed in a rectangular shape. Therefore, as shown in Figures 6 and 7, the locking pieces 15, 15 flex and deform in accordance with the lateral dimension (left-right dimension) of the net material 11, exerting tension (tension) on the net material 11. The detailed function of the first locking body 13 will be described later.

8, when the arm 15b is deformed to a position extending in the same straight line as the locking piece base 15a , that is, when the arm 15b is bent in a direction perpendicular to the locking base 14, the locking piece base 15a is not easily bent because the rigidity of the locking piece base 15a is increased, even if the net material 11 is pulled in the direction indicated by the arrow C. This makes it possible to prevent the first locking body 13 from coming off the opening 41b of the vertical frame rod 41 of the net mounting frame 40. The vertical frame rod 41 will be described in detail later.

Next, the storage recess 62 for mounting the left and right vertical frame rods 41, 41 will be described. As shown in FIG. 2 and FIG. 6, the storage recess 62 is formed in the side walls 61, 61 on both the left and right sides of the sash 60. The side walls 61 extend on the same plane as the inner surface 72a of the mounting portion 72, and the storage recess 62 recessed outward in the left and right direction is formed in this side wall 61. The storage recess 62 is formed in a rectangular shape in a plan view, opens on the net material 11 side, and extends in the vertical direction. The storage recess 62 has a bottom plate 63 arranged at the bottom and a pair of side plates 64, 64 extending inward in the left and right direction from both ends of the bottom plate 63, and an opening 62a is formed on the opposite side to the bottom plate 63. Inside the storage recess 62, a groove 65 is formed that is surrounded by the bottom plate 63 and the side plates 64, 64 and extends in the vertical direction.

As shown in FIG. 9, the storage recess 62 extends vertically between a position beyond the lower end and a position beyond the upper end of the vertical frame rod 41. In other words, the storage recess 62 is longer than the vertical length of the vertical frame rod 41.

As shown in FIG. 6, locking ridges 66, 66 are formed on the inner surfaces of the side plates 64, 64 of the storage recess 62. The locking ridges 66, 66 protrude into the groove 65, and a step 67 extending into the groove 65 is formed on the side of the opening 62a of the storage recess 62 of the locking ridges 66, 66. This step 67 is formed in a plate shape extending in the vertical direction, and the flange 43c of the vertical frame rod 41 described below abuts against the step 67, positioning the vertical frame rod 41 in the left-right direction with respect to the storage recess 62.

Next, the vertical frame rod 41 will be described. As shown in Figs. 2 and 6, the vertical frame rod 41 is a rod-shaped member extending in the vertical direction that is detachably inserted into the storage recess 62. The vertical frame rod 41 is formed, for example, from a synthetic resin material, and has an inner wall 42 through which the first locking body 13 is inserted, a pair of side walls 43, 43 extending from both sides of the inner wall 42 toward the bottom plate 63 of the storage recess 62, and a bottom wall 44 connecting the ends of these side walls 43, 43 on the bottom plate 63 side, and is formed in a rectangular shape in cross section. A groove 45 surrounded by the inner wall 42, the side walls 43, 43, and the bottom wall 44 is formed in the vertical frame 41, and a part of the first locking body 13 is accommodated in this groove 45.

An opening 41b into which the first locking body 13 is inserted is formed in the widthwise center of the inner wall 42. The opening 41b is formed in a slit shape extending between the lower end and the upper end of the inner wall 42, and in this embodiment, the opening 41b is formed in a long and narrow rectangular shape extending in the vertical direction. The width d of the opening 41b is approximately twice the length L2 (see FIG. 4(b)) of the locking piece base 15a of the first locking body 13 described above. This makes it difficult for the first locking body 13 to come out of the opening 41b.

The inner edge of the opening 41b is provided with a disengagement prevention protrusion 42a that protrudes into the recessed groove 45 to prevent the arms 15b, 15b of the first locking body 13 from moving into the opening 41b. In addition, the outer periphery of the opening 41b is provided with a disengagement protrusion 42b that protrudes from the inner wall 42 toward the mesh material 11 and bends toward the inside of the room. When removing the vertical frame rod 41 from the storage recess 62, this disengagement protrusion 42b is hooked and pulled with a fingertip or a screwdriver. The disengagement protrusion 42b may be provided continuously in the vertical direction on the outer surface of the inner wall 42, or multiple protrusions may be provided at intervals.

The ends of the left and right side walls 43, 43 of the vertical frame rod 41 opposite the bottom wall 44 are formed with flanges 43c that protrude outward. The flanges 43c extend in the vertical direction. Furthermore, on the bottom wall 44 side of the flanges 43c of the left and right side walls 43, 43, there are formed interlocking protrusions 43a that engage with interlocking protrusions 66 formed in the storage recess 62 of the sash 60. The interlocking protrusions 43a have a first inclined surface 43b that inclines toward the interlocking protrusions 66 as it advances toward the bottom wall 44. When the vertical frame rod 41 is inserted into the storage recess 62, the flange 43c of the vertical frame rod 41 abuts against the step 67 of the locking protrusion 66, and the locking protrusion 66 abuts against the first inclined surface 43b, locking the vertical frame rod 41 in a position relative to the storage recess 62.

As shown in FIG. 7, the tip of the locking protrusion 66 is formed with a second inclined surface 66a that inclines toward the vertical frame rod 41 as it advances toward the bottom wall 44 of the vertical frame rod 41, and a third inclined surface 44a and a fourth inclined surface 44b that incline along the second inclined surface 66a are formed on both sides of the width of the bottom wall 44 of the vertical frame rod 41. Therefore, when the vertical frame rod 41 is inserted into the storage recess 62, the left and right side walls 43, 43 are elastically deformed inward while the third inclined surface 44a and the fourth inclined surface 44b come into contact with the second inclined surfaces 66a, 66a of the locking protrusions 66, 66, and move into the storage recess 62, so that the vertical frame rod 41 can be easily inserted into the storage recess 62.

Next, the second fastening bodies 20 provided above and below the net material 11 will be described. As shown in Figures 1, 3, 5(a) and 5(b), the second fastening bodies 20 utilize a fastener, which is a type of fastener, and are made up of a pair of interlocking bands 23, 23 in which small pieces (elements) 21 that interlock with each other are attached to the edges of two cloth tapes 22, with one interlocking band 23 attached to the upper and lower horizontal edge portions 11b1 of the net material 11. More specifically, the cloth tapes 22 of the interlocking bands 23 are attached along the side of the horizontal edge portion 11b1, and multiple small pieces 21 are arranged along the horizontal edge 11b of the net material 11.

The second fastener 20 is not limited to the fastener described above, but may be something else. For example, it may be a cloth or synthetic resin tape with intermittent protrusions or continuous ridges.

Next, the horizontal frame rod 50 and the mesh material engagement member 25 for engaging the second engaging body 20 to the sash 60 will be described. The horizontal frame rod 50 is recessed into the top plate 68 and bottom plate 69 of the sash 60 as shown in Figs. 1, 11, and 12. The horizontal frame rod 50 is made of synthetic resin material and has a bottom plate 51 extending in the left-right direction and a pair of side plates 52, 52 extending from both sides of the width direction (front-rear direction) of the bottom plate 51 toward the mesh material 11, forming a U-shaped cross section. Inside the horizontal frame rod 50, a groove 50a surrounded by the bottom plate 51 and the side plates 52, 52 is formed, and an opening 50c is formed on the mesh material 11 side of the pair of side plates 52, 52. The groove 50a and the opening 50c extend in the left-right direction. The inner surfaces of these side plates 52, 52 are formed with locking protrusions 50b, 50b that protrude into the locking groove 50a.

The mesh material engaging member 25 comprises a bottom plate 26 extending along the opening 50c of the horizontal frame rod 50, and two engaging pieces 27, 27 protruding from the inner surface of the bottom plate 26 toward the bottom plate 51 of the horizontal frame rod 50. These engaging pieces 27, 27 are arranged side by side with a gap between them, and the engaging pieces 27, 27 are provided with a locked portion 27a for engaging with the locking protrusion 50b provided on the horizontal frame rod 50 to lock the mesh material engaging member 25 to the horizontal frame rod 50. A flange portion 26a extending along the locking protrusion 50b is formed on both sides of the bottom plate 26. When the mesh material engaging member 25 is inserted into the groove 50a, the locked portion 27a comes into contact with the locking protrusion 50b, and the engaging pieces 27, 27 elastically deform inwardly while the mesh material engaging member 25 moves into the groove 50a. When the flange 26a comes into contact with the locking ridge 50b, the locked portion 27a is locked to the locking ridge 50b. To remove the mesh material engaging member 25 from the horizontal frame rod 50, insert a screwdriver or the like between the flange 26a and the locking ridge 50b to pull the mesh material engaging member 25 out of the horizontal frame rod 50.

When the second locking body 20 is housed in the recessed groove 50a, the mesh material 11 connected to the second locking body 20 is clamped between the locking protrusion 50b of the horizontal frame rod 50 and the locked portion 27a of the mesh material engagement member 25, so that both the upper and lower ends of the mesh material 11 are held by the horizontal frame rod 50.

In the screen door device 1 configured in this way, the case of removing the insect screen 10 from the sash 60 will be described. First, the net material engagement members 25 attached to the upper and lower horizontal frame rods 50 shown in Figures 1 and 11 are removed from the horizontal frame rods 50. Therefore, the second locking bodies 20 of the insect screen 10 are freed from the horizontal frame rods 50. Then, the vertical frame rods 41 into which the first locking bodies 13 provided on the left and right sides of the insect screen 10 shown in Figure 2 are inserted are removed from the storage recesses 62 of the sash 60. When removing the vertical frame rods 41, the locking protrusions 42b shown in Figure 6 are pulled inward to remove the vertical frame rods 41 from the storage recesses 62. When removing the vertical frame rods 41 from the storage recesses 62, the net material 11 is flexible and bends. Therefore, the removal of the vertical frame rods 41 from the storage recesses 62 can be easily performed. Then, slide the insect screen 10 relative to the vertical frame rods 41, 41 to remove the insect screen 10 from the vertical frame rods 41, 41.

Next, the installation of the insect screen 10 to the screen mounting frame 40 will be described. First, the first retaining body 13 attached to the left and right vertical sides 11a1, 11a1 of the insect screen 10 shown in FIG. 3 is inserted into the recessed groove 41a from the opening at one longitudinal end of the vertical frame rod 41 as shown in FIG. 10, and slid to the other longitudinal side. As a result, the vertical frame rod 41 is installed on both the left and right sides of the insect screen 10.

2, the left and right vertical frame rods 41, 41 are inserted into the corresponding storage recesses 62 of the sash 60. When the left and right vertical frame rods 41, 41 are inserted into the corresponding storage recesses 62, as shown in Figs. 6 and 7, the pair of locking pieces 15, 15 of the first locking body 13 are deflected relative to the locking base 14 according to the dimensional accuracy of the mesh material 11 in the left and right direction, and the deflection angle θ changes. Therefore, even if the left and right dimensions of the mesh material 11 at any position in the vertical direction are different, the deflection of the locking pieces 15, 15 causes a reaction force (tension) of the elastic force pressing the inner surface of the inner wall 42 to act on both the left and right sides of the mesh material 11 via the locking base 14. Therefore, the mesh material 11 is stretched in a taut state without slack or wrinkles throughout the entire vertical direction between the left and right vertical frame rods 41, 41.

Then, as shown in Figures 1 and 11, the cloth tapes 22, 22 of the second retaining bodies 20, 20 attached to the top and bottom of the net material 11 are inserted into the grooves 50a of the horizontal frame rods 50, 50 formed on the top and bottom of the sash 60. Then, the net material engaging member 25 is inserted into the grooves 50a, and the net material engaging member 25 is engaged with the horizontal frame rod 50, and the cloth tape 22 of the second retaining body 20 is clamped between the horizontal frame rod 50 and the net material engaging member 25. As a result, both the top and bottom ends of the net material 11 are held by the top and bottom horizontal frame rods 50, 50.

As described above, in the screen door device 1 of this embodiment, the first locking body 13 attached to the left and right vertical sides 11a1 of the insect screen 10 has a pair of locking pieces 15, 15 that can be flexibly deformed, and these locking pieces 15, 15 flex according to the accuracy of the left-right dimension of the screen material 11. The reaction force of the elastic force generated by the flexing of these locking pieces 15, 15 acts as a tension on the screen material 11. Therefore, even if strict dimensional accuracy is not required for the left-right dimension of the screen material 11, the screen material 11 can be stretched between the vertical frame rods 41, 41 in a taut state without slack or wrinkles. In addition, the screen material 11 can be attached by sliding it to the vertical frame rods 41, 41, and the vertical frame rods 41, 41 can be detachably attached to the storage recess 62 of the sash 60, so that the insect screen 10 can be easily attached to and detached from the vertical frame rods 41, 41.

The pair of locking pieces 15, 15 are provided continuously along the vertical side 11a of the net material 11, so that even if the dimensional accuracy of the vertical side 11a of the net material 11 is not uniform in the left-right direction, tension from the pair of locking pieces 15, 15 acts on the vertical side 11a in accordance with its dimensions. Therefore, compared to a case where an evenly distributed load acts over the entire vertical side 11a, it is possible to prevent the vertical frame rod 41 from deforming into an hourglass shape.

In the above embodiment, the screen mounting frame 40 has the vertical frame rod 41 that is detachable from the sash 60 and the horizontal frame rod 50 formed on the sash 60, but is not limited to this. The screen mounting frame 40 may be provided on a movable frame 76 attached to the sash 75 as shown in Figures 13 and 14 (Modification 1).

In this case, a sliding window with two shoji screens 70 that can move left and right is provided on the indoor side of the sash 75, and an insect screen 10 that can move left and right is provided on the outdoor side of the sash 75. The insect screen 10 is formed to a size that will cover the window that opens when the two shoji screens 70, 70 are moved to a position where they overlap each other. The movable frame 76 has storage recesses 62 on both the left and right sides to which the vertical frame rods 41 can be attached and detached, and horizontal frame rods 50 are formed on both the top and bottom of the movable frame 76.

The first locking bodies 13 attached to the left and right sides of the net material 11 are then inserted into the vertical frame rods 41, which are then fitted into the storage recesses 62. The second locking bodies 20 attached to the top and bottom of the net material 11 are clamped and locked between the horizontal frame rods 50 and the net material engagement members 25 inserted therein.

REFERENCE SIGNS LIST 1 Screen door device 10 Insect screen 11 Screen material 11a Vertical side 11b Horizontal side 13 First locking body 14 Locking base 15 Locking piece 20 Second locking body 40 Screen mounting frame 41 Vertical frame rod (support frame rod)
41a Groove 41b Opening 42 Inner wall 50 Horizontal frame rod (side frame rod)
W Building opening

Claims (9)

An insect screen for attaching to a hollow screen mounting frame installed in an opening in a building,
The insect screen is
A rectangular flexible net material having left and right vertical sides and top and bottom horizontal sides;
A first locking body is attached to each of the left and right vertical sides or the top and bottom horizontal sides of the net material,
The first locking body is
A locking base having a base end attached to the net material;
a pair of locking pieces provided on both side surfaces of the tip of the locking base for engaging with the net mounting frame in a state in which the net mounting frame is accommodated in the net mounting frame through a slit-shaped opening;
The pair of locking pieces are elastic and extend in a direction away from each of the side surfaces of the locking base as they move from a tip end portion to a base end portion of each of the side surfaces,
The pair of locking pieces have their respective tips slidably abutting against the inner surface of the net mounting frame, and are connected to the locking base so that the inclination angle can be freely changed, thereby applying tension to the net material by the elastic restoring force of the pair of locking pieces.
An insect screen characterized by: The first engaging body is continuously provided between both ends in the longitudinal direction of each of the left and right vertical sides or the upper and lower horizontal sides of the net material.
2. The insect screen according to claim 1 . The pair of locking pieces are arranged symmetrically with respect to the locking base.
3. The insect screen according to claim 2. The pair of locking pieces each extend at an acute bending angle relative to the locking base.
4. The insect screen according to claim 3. The pair of locking pieces have the same length and cross-sectional shape.
5. An insect screen according to claim 4. A screen door device comprising the insect screen according to any one of claims 1 to 5 attached to the screen mounting frame provided at the building opening,
The net mounting frame has a pair of support frame rods arranged opposite to the first locking bodies attached to the left and right vertical sides or the top and bottom horizontal sides of the net material,
The support frame rod has an inner wall disposed opposite to the first engaging body, the opening formed in the inner wall, and a recessed groove communicating with the opening,
The first engaging body of the insect screen is accommodated in the groove through the opening of the support frame rod.
A screen door device characterized by: The pair of support frame rods are detachably attached to the building opening,
7. The screen door device according to claim 6. The net mounting frame has a pair of side frame rods extending between one end portion and the other end portion of each of the pair of support frame rods in the longitudinal direction,
A second locking body is attached to each of the left and right vertical sides or the top and bottom horizontal sides of the net material to which the first locking body is not attached,
The second engaging body is detachably attached to the side frame rod.
8. The screen door device according to claim 7. A method for attaching or detaching the insect screen of the screen door device according to claim 8 to or from the screen mounting frame, comprising:
When removing the insect screen attached to the screen mounting frame, the second engaging body is removed from the side frame rod, the pair of support frame rods are removed from the building opening, and the insect screen is slid relative to the pair of support frame rods to remove it from one longitudinal end of the pair of support frame rods.
When attaching the insect screen to the screen mounting frame, the insect screen is slid and attached to the pair of support frame rods, the pair of support frame rods are then attached to the building opening, and the second fastening body is attached to the side frame rods.
The method for attaching and detaching the insect screen is characterized by the above.

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