Screen door / window and sliding door / window

Abstract

The present invention has: a detachable stile which has a grooved frame and can be attached to the inside of a frame of a sliding door / window; a screen material which is affixed to the stile; and a first screen detachment prevention part which is attached to the stile. The stile has an upper rail groove part which is provided along an upper edge section thereof, opens upward, and into which a screen rail of the frame is inserted from above. The first screen detachment prevention part is installed in the upper rail groove part. The first screen detachment prevention part has a moving part which is positioned inside the upper rail groove part and is capable of moving vertically while contacting the screen rail, a restriction part which is positioned inside the upper rail groove part and restricts downward movement of the moving part, and an operation part which operates the restriction part. The operation part can operate the restriction part from the indoor side of the stile 3.　

Description

Window screen and fitting

[0001] The present disclosure relates to a window screen and a fitting. This application claims priority based on Japanese Patent Application No. 2024-189706 filed in Japan on October 29, 2024, and Japanese Patent Application No. 2025-181886 filed in Japan on October 28, 2025, the contents of which are incorporated herein by reference.

[0002] Generally, a window screen is provided with a window-screen detachment prevention portion for preventing detachment from a rail (see, for example, Patent Document 1). As a window-screen detachment prevention portion provided in a window screen that is snap-fitted to a rail, it is attached to the upper end portion of the vertical frame of the window screen, projects upward from the upper end portion of the vertical frame after the window screen is fitted into the rail, and reduces the movable range of the window screen upward to prevent the window screen from detaching from the rail.

[0003] Japanese Unexamined Patent Application Publication No. 2004-92311

[0004] The window-screen detachment prevention portion attached to the upper end portion of the vertical frame of the window screen as described above can be switched between a state of protruding from the upper end portion of the vertical frame and a state of not protruding by an operator operating from the side of the window screen. For this reason, for example, when it is installed so as to cover the entire opening of the frame of the fitting and no space for operating the window-screen detachment prevention portion can be secured on the side of the window screen, it cannot be adopted.

[0005] An object of the present disclosure is to provide a window screen and a fitting that can operate the window-screen detachment prevention portion even when there is no space for operating the window-screen detachment prevention portion on the side of the window screen.

[0006] To achieve the above objective, the screen door according to this disclosure comprises a frame that can be attached to and detached from the frame of a door or window in a sliding manner, a mesh material attached to the frame, and a screen door detachment prevention part attached to the frame, wherein the frame has an upper rail groove portion provided along its upper edge and opening upward so that the upper rail of the frame can be inserted from above, the screen door detachment prevention part is installed in the upper rail groove portion, the screen door detachment prevention part comprises a movable part disposed inside the upper rail groove portion and movable in the vertical direction in contact with the upper rail, a restricting part disposed inside the upper rail groove portion and restricting the downward movement of the movable part, and an operating part for operating the restricting part, the operating part being able to operate the restricting part from the indoor side of the frame.

[0007] To achieve the above objective, the joinery according to this disclosure comprises the above-mentioned screen door and a frame to which the screen door can be attached and detached, wherein the screen door covers the entire opening inside the frame.

[0008] This is a front view of the screen door and fittings of the first embodiment, as seen from the outside. This is a cross-sectional view taken along line A-A in Figure 1. This is a cross-sectional view taken along line B-B in Figure 1. This is a front view of the screen door and fittings, as seen from the inside. This is a perspective view of the screen door. This is an enlarged view of part C in Figure 3. This is a perspective view of the end of the top frame. This is an enlarged view of part D in Figure 2. This is a perspective view of the upper end of the first vertical frame. This is a perspective view of the upper end of the first vertical frame. This is a perspective view of the joint between the top frame and the first vertical frame. This is a front view of the first screen door detachment prevention unit with the rotating part positioned in the third position. This is a perspective view of the first screen door detachment prevention unit. This is a front view of the first screen door detachment prevention unit with the rotating part positioned in the first position. This is a front view of the first screen door detachment prevention unit with the rotating part positioned in the second position. This is a front view showing the first screen door detachment prevention unit before the screen door is fitted into the frame. This is a front view showing the first screen door detachment prevention unit with the rotating part in contact with the screen door rail. This is a front view showing the first screen door detachment prevention unit with the rotating part moved to the second position. This is a front view showing the first screen door detachment prevention unit with the rotating part moved to the third position. This is a front view showing the first screen door detachment prevention unit with the regulating part positioned in the regulating position. This is a perspective view of the screen door of the second embodiment of the joinery. This is a perspective view showing the second screen door detachment prevention unit positioned in the first position. This is a perspective view showing the second screen door detachment prevention unit positioned in the second position. This is a perspective view showing the third screen door detachment prevention unit positioned in the first position. This is a perspective view showing the third screen door detachment prevention unit positioned in the second position. This is a perspective view showing the second screen door detachment prevention member and the third screen door detachment prevention member. This is a front view showing the second screen door detachment prevention unit positioned in the first position. This is a view of the second screen door detachment prevention unit positioned in the first position from above. This is a front view showing the second screen door detachment prevention unit positioned in the second position from above. This is a front view showing the third screen door detachment prevention unit positioned in the first position. This is a front view showing the third screen door detachment prevention unit positioned in the second position. This is a diagram showing the burring of the bottom frame.

[0009] (First Embodiment) As shown in Figures 1 to 4, the screen door 1 is installed in a door 2 provided in a wall opening 111 of a wall portion 11 of a building such as a house. The door 2 is a sliding sash. The screen door 1 covers the entire opening 12 inside the frame 21 of the door 2 with a single panel. In the following description, the horizontal direction perpendicular to the wall portion 11 is referred to as the indoor / outdoor direction. In the drawings, the outdoors is indicated by reference numeral 13 and the indoors by reference numeral 14. The horizontal direction along the wall portion 11 is referred to as the width direction. The width direction corresponds to the left-right direction in the claims. In the width direction, the ends of the door 2 in the width direction relative to the center of the width direction may be referred to as the outside, and the ends of the door 2 in the width direction relative to the center of the width direction may be referred to as the inside.

[0010] The joinery 2 comprises a frame 21, an outer sash 22, an inner sash 23, and a screen door 1. In the drawing, the surface material of the outer sash 22 and inner sash 23 is not shown. The frame 21 is rectangular in shape. The frame 21 comprises an upper frame 211, a lower frame 212, a first vertical frame 213, and a second vertical frame 214. The upper frame 211 and the lower frame 212 are profiles that extend in the width direction. The first vertical frame 213 and the second vertical frame 214 are profiles that extend in the vertical direction. The first vertical frame 213 is provided along one edge in the width direction of the wall opening 111. The second vertical frame 214 is provided along the other edge in the width direction of the wall opening 111. The first vertical frame 213 and the second vertical frame 214 correspond to the vertical frame portions provided along the side edges of the frame 21.

[0011] The upper frame 211, lower frame 212, first vertical frame 213, and second vertical frame 214 are each provided with screen door rails 211a, 212a, 213a, and 214a. The screen door rail 211a of the upper frame 211 protrudes downward from the outdoor end of the fixed plate portion 211b of the upper frame 211, where the plate surface faces vertically. The screen door rail 211a of the upper frame 211 corresponds to the upper rail. The outer sash rail 211c and the inner sash rail 211d are provided in the middle of the fixed plate portion 211b in the indoor-outdoor direction, so as to protrude downward. The screen door rail 212a of the lower frame 212 protrudes upward from the outdoor end of the fixed plate portion 212b of the lower frame 212, where the plate surface faces vertically. The outer sash rail 212c and the inner sash rail 212d are provided in the middle of the fixed plate portion 212b in the indoor-outdoor direction, so as to protrude upward. The screen door rail 213a of the first vertical frame 213 protrudes to the other side in the width direction, i.e., inward in the width direction, from the fixed plate portion 213b of the first vertical frame 213, whose plate surface faces the width direction. The screen door rail 214a of the second vertical frame 214 protrudes to the other side in the width direction, i.e., inward in the width direction, from the fixed plate portion 214b of the second vertical frame 214, whose plate surface faces the width direction. The shape of the screen door rail 214a of the second vertical frame 214 and the shape of the screen door rail 213a of the first vertical frame 213 are symmetrical in the width direction.

[0012] The screen door 1 is installed in a sliding manner by moving it upward from an oblique position relative to the frame 21 and attaching it to the screen door rail 211a of the upper frame 211, and then lowering it downward and attaching it to the screen door rail 212a of the lower frame 212. As shown in Figure 5, the screen door 1 has a frame 3, a mesh material 4, a locking part 5, and a first screen door detachment prevention part 6. The frame 3 is rectangular in shape. The mesh material 4 is stretched over the frame 3. The mesh material 4 is fixed around the entire circumference of the frame 3. The frame 3 has an upper frame 31, a lower frame 32, a first vertical frame 33, and a second vertical frame 34. The upper frame 31 and the lower frame 32 are profiles that extend in the width direction. The upper frame 31 and the lower frame 32 are horizontal frames. The first vertical frame 33 and the second vertical frame 34 are profiles that extend in the vertical direction. The first vertical frame 33 is provided along one edge in the width direction of the screen door 1. The second vertical frame 34 is provided along the other edge in the width direction of the screen door 1. The shapes of the first vertical frame 33 and the second vertical frame 34 are symmetrical in the width direction. Below, the shape of the first vertical frame 33 will be described, and the description of the shape of the second vertical frame 34 will be omitted. Handles 37 are attached to the first vertical frame 33 and the second vertical frame 34.

[0013] As shown in Figures 6 and 7, the upper frame 31 has a mesh mounting portion 311, an outdoor side rib 312, an indoor side rib 313, a lower plate portion 314, and a middle plate portion 315. The lower plate portion 314 is a flat plate with its surface facing vertically. The outdoor side rib 312 extends upward from the outdoor end of the lower plate portion 314. The indoor side rib 313 extends upward from the indoor end of the lower plate portion 314. The indoor side rib 313 corresponds to the upper rail groove room interior plate portion. The outdoor side rib 312 and the indoor side rib 313 are arranged parallel to each other with a gap between them in the indoor and outdoor directions. The middle plate portion 315 is arranged above the lower plate portion 314 with a gap between them. The middle plate portion 315 is arranged between the outdoor side rib 312 and the indoor side rib 313. The outdoor end of the intermediate plate section 315 is connected to the vertically intermediate portion of the outdoor rib 312. The indoor end of the intermediate plate section 315 is connected to the vertically intermediate portion of the indoor rib 313. Tapping holes 315a are formed in the intermediate plate section 315. The tapping holes 315a are groove-shaped, extending in the width direction and opening upward. The mesh material attachment section 311 extends downward from the indoor-outdoor intermediate portion of the lower plate section 314 and bends outwards. The mesh material 4 is attached to the groove formed by the mesh material attachment section 311 and the lower plate section 314. Elongated holes 313a extending in the width direction are formed at both ends of the indoor rib 313 in the length direction, i.e., in the width direction. The elongated holes 313a penetrate the indoor rib 313 in the indoor-outdoor direction. The elongated holes 313a are positioned above the intermediate plate section 315. See also Figure 5 for the elongated hole 313a.

[0014] The upper frame 31 has an upper rail groove 318 that opens upward, surrounded by a middle plate 315, an outdoor rib 312, and an indoor rib 313. As shown in Figure 6, the screen door rail 211a of the upper frame 211 is inserted into the upper rail groove 318 from above. Mohair is attached to the tip of the outdoor rib 312, projecting inwards. The mohair is provided along the entire length, i.e., the entire width, of the upper frame 31. The mohair is a member that seals the gap between the upper frame 31 and the upper frame 211.

[0015] As shown in Figure 3, the lower frame 32 has a mesh attachment portion 321, an outdoor side rib 322, an indoor side rib 323, an upper plate portion 324, and an intermediate plate portion 325. The upper plate portion 324 is a flat plate with its surface facing vertically. The intermediate plate portion 325 is positioned below the upper plate portion 324 at a distance. The outdoor side rib 322 extends downward from the outdoor end of the upper plate portion 324. The indoor side rib 313 extends downward from the indoor end of the upper plate portion 324. The outdoor side rib 322 and the indoor side rib 323 are positioned parallel to each other with a distance between them in the indoor and outdoor directions. The mesh attachment portion 321 extends upward from the middle of the upper plate portion 324 in the indoor and outdoor directions and bends towards the outdoor side. The mesh 4 is attached to the groove formed by the mesh attachment portion 321 and the upper plate portion 324.

[0016] The lower frame 32 has a lower rail groove 328 that opens downwards and is surrounded by an upper plate 324, an outdoor rib 322, and an indoor rib 323. The screen door rail 212a of the lower frame 212 is inserted into the lower rail groove 328 from below. Mohair is attached to the tip of the outdoor rib 322, protruding inwards. The mohair is provided along the entire length, i.e., the entire width, of the lower frame 32. The mohair is a member that seals the gap between the lower frame 32 and the lower frame 212.

[0017] As shown in Figures 8 to 10, the first vertical frame 33 has a mesh attachment portion 331, an outdoor side rib 332, an inner plate portion 333, an outer plate portion 334, an outdoor plate portion 335, and an indoor plate portion 336. The inner plate portion 333 is a flat plate with its surface facing the width direction. The outdoor plate portion 335 extends outward in the width direction from the outdoor end of the inner plate portion 333. The indoor plate portion 336 extends outward in the width direction from the indoor end of the inner plate portion 333. The outdoor plate portion 335 and the indoor plate portion 336 are arranged parallel to each other with a gap between them in the indoor and outdoor directions. The outer plate portion 334 is arranged outside the inner plate portion 333 in the width direction with a gap between them. The outer plate portion 334 connects the outer end of the outdoor plate portion 335 in the width direction and the outer end of the indoor plate portion 336 in the width direction. The outdoor rib 332 extends outward in the width direction from the corner of the outdoor panel 335 and the outer panel 334. The outdoor rib 332 and the outdoor panel 335 are arranged flush on the same visible surface. The mesh material attachment portion 331 extends inward in the width direction from the middle of the inner panel 333 in the indoor-outdoor direction and bends outward. The edge of the mesh material 4 is attached to the groove formed by the mesh material attachment portion 331 and the inner panel 333.

[0018] The first vertical frame 33 has a hollow section 337 surrounded by an inner plate section 333, an outer plate section 334, an outdoor plate section 335, and an indoor plate section 336. The outdoor side rib 332 is positioned on the outdoor side of the screen door rail 213a of the first vertical frame 213. Mohair 338 protruding to the indoor side is attached to the tip of the outdoor side rib 332. The mohair 338 is provided along the entire length of the first vertical frame 33, i.e., the entire vertical direction. The mohair 338 is a member that closes the gap between the first vertical frame 33 and the first vertical frame 213. Similarly, the mohair 338 provided on the second vertical frame 34 is provided along the entire length of the second vertical frame 34, i.e., the entire vertical direction. The mohair 338 provided on the second vertical frame 34 is a member that closes the gap between the second vertical frame 34 and the second vertical frame 214. The mesh mounting portion 331, inner plate portion 333, outer plate portion 334, outdoor plate portion 335, and indoor plate portion 336 of the first vertical frame 33 correspond to the main body portion. The outdoor side rib 332 corresponds to the outdoor side protrusion portion.

[0019] As shown in Figure 3, when the screen door 1 is attached to the frame 21, the screen door rail 212a of the lower frame 212 is inserted into the lower rail groove 328 from below. The screen door rail 211a of the upper frame 211 is inserted into the upper rail groove 318 from above. The lower end of the screen door rail 211a of the upper frame 211 and the middle plate portion 315 of the upper frame 31 are spaced apart in the vertical direction. When the screen door 1 is installed on the frame 21, the upper end of the outdoor side rib 312 and the upper end of the indoor side rib 313 of the upper frame 31 are spaced apart below the fixing plate portion 211b of the upper frame 211. When attaching or removing the screen door 1 from the frame 21, the screen door 1 is moved upward relative to the frame 21 in a sliding manner within the range of the above spacing, and the lower frame 32 is moved above the screen door rail 212a of the lower frame 212.

[0020] As shown in Figure 9, the upper end portion 333a of the inner plate portion 333 is positioned below the upper end portion 335a of the outer plate portion 335 and the upper end portion 336a of the indoor plate portion 336. The upper ends of the outer plate portion 335 and the indoor plate portion 336 are not connected to the inner plate portion 333. A notch 333b is formed in the middle of the upper end portion 333a of the inner plate portion 333 in the indoor-outdoor direction. A notch 339 is formed in the upper end portion of the first vertical frame 33, surrounded by the inner edges in the width direction of the outer plate portion 335 and the indoor plate portion 336, and the upper end portion 333a of the inner plate portion 333. The upper end portion 331a of the mesh material mounting portion 331 is positioned below the upper end portion 333a of the inner plate portion 333. The upper end portion 331a of the mesh material mounting portion 331 is positioned at the height of the bottom of the notch 333b of the inner plate portion 333. The mesh attachment portion 331 is connected to the inner plate portion 333 below the notch portion 333b. As shown in Figures 9 and 10, the upper end portion 334a of the outer plate portion 334 and the upper end portion 332a of the outdoor side rib 332 are positioned at the same height as the upper end portion 335a of the outdoor plate portion 335 and the upper end portion 336a of the indoor plate portion 336. A notch portion 334b ​​is formed in the middle of the upper end portion of the outer plate portion 334 in the indoor-outdoor direction. A hole portion 334c is formed in the outer plate portion 334 below the notch portion 334b.

[0021] As shown in Figure 11, at the connection portion 351 between the upper frame 31 and the first vertical frame 33, the widthwise end of the upper frame 31 is fitted into the notch 339 and the hollow portion 337 of the first vertical frame 33. The mesh material attachment portion 311 of the upper frame 31 is positioned on top of the mesh material attachment portion 331 of the first vertical frame 33. Refer to Figure 7 for the mesh material attachment portion 311 of the upper frame 31. The mesh material attachment portion 311 of the upper frame 31 has a notch formed so as not to interfere with the inner plate portion 333 of the first vertical frame 33. The outdoor side rib 312 of the upper frame 31 overlaps the indoor side of the outdoor plate portion 335 of the first vertical frame 33. The indoor side rib 313 of the upper frame 31 overlaps the outdoor side of the indoor plate portion 336 of the first vertical frame 33. The tapping hole 315a of the upper frame 31 overlaps in the width direction with the hole 334c of the outer plate portion 334 of the first vertical frame 33. Refer to Figure 7 for the tapping hole 315a. The upper frame 31 and the first vertical frame 33 are fixed together by screws inserted into the hole 334c and the tapping hole 315a. The widthwise end of the upper rail groove portion 318 of the upper frame 31 is fitted into the upper end portion of the first vertical frame 33. The elongated hole 313a of the indoor rib 313 of the upper frame 31 is positioned further inward in the width direction than the first vertical frame 33. That is, the elongated hole 313a of the upper frame 31 does not overlap with the indoor plate portion 336 of the first vertical frame 33.

[0022] The first screen door detachment prevention unit 6 is installed at the connection portion 351 between the upper frame 31 and the first vertical frame 33. As shown in Figures 11 to 13, the first screen door detachment prevention unit 6 has a movable part 61, a restricting part 62, and an operating part 63. The movable part 61 is installed inside the upper rail groove 318 and is movable vertically within a predetermined height range. The restricting part 62 is installed inside the upper rail groove 318 and restricts the movement of the movable part 61. The operating part 63 operates the restricting part 62.

[0023] The movable part 61 has a fixed part 611, a rotating part 612, and a spring 613. The fixed part 611 is fixed to the upper frame 31 and the first vertical frame 33. The fixed part 611 is fitted into the upper rail groove 318 of the upper frame 31 and the notch 334b ​​of the outer plate 334 of the first vertical frame 33. The upper end of the fixed part 611 is positioned at approximately the same height as the upper ends of the upper frame 31 and the first vertical frame 33.

[0024] The rotating part 612 is rotatably attached to the fixed part 611. The fixed part 611 has a rotating shaft part 612a that rotatably supports the rotating part 612. The axis of the rotating shaft part 612a extends in the indoor / outdoor direction. The highest position in the rotation range of the rotating part 612 shown in Figure 14 is referred to as the first position. The lowest position in the rotation range of the rotating part 612 shown in Figure 15 is referred to as the second position. The rotating part 612 shown in Figure 12 is positioned at a third position between the first and second positions.

[0025] As shown in Figure 16, when the rotating part 612 is positioned in the first position, it is positioned above the middle plate portion 315 of the upper frame 31 with a gap. When the rotating part 612 is positioned in the first position, the upper end of the rotating part 612 is positioned at approximately the same height as the upper ends of the upper frame 31 and the first vertical frame 33, i.e., the upper edge portion 3a of the frame 3. When the rotating part 612 is positioned in the second position, it is in contact with or close to the upper surface of the middle plate portion 315 of the upper frame 31. When the rotating part 612 is positioned in the second position, the upper end of the rotating part 612 is positioned below the upper ends of the upper frame 31 and the first vertical frame 33. The rotating part 612 has a first groove portion 612b formed on the surface that becomes the upper surface when it is in the first position as shown in Figure 14, which extends in the width direction and opens upward. The rotating part 612 has a second groove 612c formed on the surface that becomes the upper surface when it is in the second position shown in Figure 15. This groove extends in the width direction and opens upward. The first groove 612b and the second groove 612c are connected. The connection portion between the first groove 612b and the second groove 612c is denoted as the third groove 612d.

[0026] The spring 613 is attached to the rotating shaft portion 612a. The spring 613 presses upward to position the rotating portion 612 in a first position. When the rotating portion 612 in the first position is pushed from above, the spring 613 presses downward, causing it to move downward, towards the second position. The rotating portion 612 is pressed upward, towards the first position, by the restoring force of the downward-pressed spring 613. The rotating portion 612 is in the first position when no external force is acting from above.

[0027] As shown in Figure 11, the restricting portion 62 is positioned further inward in the width direction than the movable portion 61. The restricting portion 62 is positioned on the outdoor side of the elongated hole 313a formed in the indoor rib 313 of the upper frame 31. The restricting portion 62 is shaped so that it cannot pass through the elongated hole 313a. As shown in Figures 12 and 13, the restricting portion 62 has a restricting portion body 621 and a protruding portion 622. The restricting portion body 621 is a block-shaped member. The protruding portion 622 protrudes downward from the lower surface of the restricting portion body 621. The protruding portion 622 is fitted into the tapping hole 315a of the middle plate portion 315 of the upper frame 31. The restricting portion 62 is movable in the width direction relative to the upper frame 31 with the protruding portion 622 fitted into the tapping hole 315a.

[0028] The operating part 63 protrudes inward from the indoor side of the restricting part 62. The operating part 63 is, for example, a screw attached to the restricting part 62 from the indoor side. The restricting part 62 has a screw hole into which the screw of the operating part 63 is inserted. The operating part 63 is inserted into the elongated hole 313a of the upper frame 31. The operating part 63 is movable in the width direction along the elongated hole 313a. By moving the operating part 63 in the width direction from the indoor side, the restricting part 62 can be moved in the width direction. The range of movement of the restricting part 62 is the length range of the elongated hole 313a. By tightening the screw of the operating part 63 and sandwiching the indoor side rib 313 between the screw head and the restricting part 62, the movement of the restricting part 62 relative to the upper frame 31 can be fixed.

[0029] In Figures 12 to 14, the restricting unit 62 is positioned in a restricting position that restricts the movement of the rotating unit 612. As shown in Figures 12 and 13, when the rotating unit 612 moves downward toward the second position with the restricting unit 62 in the restricting position, the rotating unit 612 contacts the restricting unit 62 from above and stops above the second position. The position where the rotating unit 612 stops at this time is referred to as the third position. In other words, the restricting position of the restricting unit 62 is a position that overlaps with the range of movement of the rotating unit 612. In Figure 15, the restricting unit 62 is positioned in an unrestricted position that does not restrict the movement of the rotating unit 612. When the restricting unit 62 is in the unrestricted position, the rotating unit 612 can move to the second position. In other words, the unrestricted position of the restricting unit 62 is a position that does not overlap with the range of movement of the rotating unit 612. The non-restrictive position of the restricting portion 62 is a position inside the width direction of the range of movement of the rotating portion 612, that is, a position away from the first vertical frame 33.

[0030] When attaching the screen door 1 to the frame 21, as shown in Figure 16, the operating part 63 is operated to position the restricting part 62 in the unrestricted position. The rotating part 612 is positioned in the first position. When the screen door 1 is moved upward relative to the frame 21 from this state, as shown in Figure 17, the rotating part 612 in the first position comes into contact with the screen door rail 211a of the upper frame 211. The screen door rail 211a comes into contact with the bottom of the first groove 612b of the rotating part 612.

[0031] As shown in Figure 18, when the screen door 1 is moved further upward relative to the frame 21, the rotating part 612 is pushed downward by the screen door rail 211a from above and rotates to the second position. As a result, the screen door rail 211a is inserted into the upper rail groove 318. The screen door rail 211a comes into contact with the bottom of the second groove 612c of the rotating part 612. The lower frame 32 is positioned above the screen door rail 212a of the lower frame 212. From this state, the screen door 1 is moved downward so that the screen door rail 212a of the lower frame 212 is inserted into the lower rail groove 328 of the lower frame 32. As a result, as shown in Figure 19, the screen door 1 moves downward relative to the screen door rail 211a, causing the rotating part 612 to rotate upward. Since the rotating part 612 is in contact with the screen door rail 211a of the upper frame 211, it does not return to the first position but is positioned in the third position. At this time, the screen door rail 211a of the upper frame 211 comes into contact with the bottom of the third groove 612d of the rotating part 612. In this state, the operating part 63 is operated from the indoor side to position the restricting part 62 in the restricting position as shown in Figure 20. As a result, the restricting part 62 is positioned below the rotating part 612, restricting the downward rotation of the rotating part 612. In this state, even if the screen door 1 tries to move upward relative to the frame 21, the rotating part 612 will not move downward, thus restricting the movement of the screen door 1. As a result, the screen door 1 is prevented from coming off the frame 21.

[0032] To remove the screen door 1 from the frame 21, the operating unit 63 is operated from the indoor side to move the restricting unit 62 to the unrestricted position. This allows the rotating unit 612 to rotate, enabling the screen door 1 to be moved upward and removed from the frame 21 in a sliding manner.

[0033] As shown in Figures 4 and 5, the first vertical frame 33 is provided with a locking mechanism 5. The locking mechanism 5 includes a mounting part 51, a locking piece 52, and an operating part 53. The mounting part 51 is attached to the first vertical frame 33. The locking piece 52 is rotatably attached to the mounting part 51 around an axis extending in the indoor / outdoor direction. The operating part 53 is connected to the mounting part 51. The locking piece 52 rotates when the user operates the operating part 53 from the indoor side. By rotating, the locking piece 52 can switch between a locked position in which it protrudes outward in the width direction from the outer plate portion 334 of the first vertical frame 33, and an unlocked position in which it is housed between the outdoor plate portion 335 and the indoor plate portion 336, further inward in the width direction than the outer plate portion 334. When the screen door 1 is installed on the frame 21, and the locking piece 52 is in the locked position, the locking piece 52 and the outdoor-side rib 332 of the first vertical frame 33 clamp the screen door rail 213a of the first vertical frame 213 from both the indoor and outdoor directions. Refer to Figure 8 for the screen door rail 213a of the first vertical frame 213. This prevents the screen door 1 from moving in the indoor or outdoor direction relative to the frame 21. When attaching or removing the screen door 1 from the frame 21, the locking piece 52 is released.

[0034] In the joinery 2 and screen door 1 of this embodiment, the downward movement of the rotating part 612 of the first screen door detachment prevention part 6 is restricted, thereby restricting the upward movement of the screen door 1 relative to the frame 21, and preventing the screen door 1 from detaching from the frame 21. The operating part 63 allows the restricting part 62 to be operated from the indoor side of the screen door 1. This makes it possible to operate the first screen door detachment prevention part 6 even if there is no space to operate the first screen door detachment prevention part 6 on the side of the screen door 1.

[0035] By moving the restricting part 62 between a restricting position below the rotating part 612 and an unrestricted position to the side of the rotating part 612, it is possible to switch between a restricted state, where the upward movement of the screen door 1 relative to the frame 21 is restricted and the screen door 1 is prevented from falling off, and an unrestricted state, where the screen door 1 can move upward relative to the frame 21 and the screen door 1 can be attached to and detached from the frame 21. This makes it possible to achieve a state in which the screen door 1 cannot come off the frame with a simple structure.

[0036] An elongated hole 313a is formed in the indoor-side rib 313 of the upper frame 31 of the screen door 1, penetrating in the indoor-outdoor direction and extending in the width direction. The operating part 63 operates the restricting part 62 through the elongated hole 313a. By forming the elongated hole 313a in the indoor-side rib 313 of the upper frame 31, the restricting part 62 can be operated from the indoor side. This minimizes the processing of the frame 3 to provide the first screen door detachment prevention part 6.

[0037] The first screen door detachment prevention section 6 is provided at both ends in the width direction of the upper rail groove section 318. By restricting the restricting section 62 of each of the first screen door detachment prevention sections 6, it is possible to prevent the screen door 1 from detaching from the frame 21 at both ends in the width direction of the screen door 1. This prevents the screen door from twisting or a localized external force from acting on the frame 3 if only one side of the screen door 1 detaches from the frame 21 in the width direction.

[0038] The screen door 1 shown in this embodiment covers the entire opening 12. Therefore, not only when the outer sash 22 and inner sash 23 are moved entirely to one side in the width direction to create an open state, but also when the outer sash 22 and inner sash 23 are moved closer to each other, so that the entire outer sash 22 and inner sash 23 overlap, or when only parts of each overlap as shown in Figures 1 and 4, the open portion can be covered by the screen door 1. Because the entire opening 12 is covered, insects and other things cannot enter between the outer sash 22 and inner sash 23 and the screen door 1, regardless of their position. As a result, the joinery 2 shown in this embodiment allows the outer sash 22 and inner sash 23 to be positioned as desired, enabling efficient ventilation from the outside. If the screen door 1 shown in this embodiment is used, for example, on a window in a bathroom or toilet, it can prevent insects from entering the room when ventilating by slightly opening one or both sides of the window in the width direction to block the view from the outside.

[0039] (Second Embodiment) The screen door 1B of the second embodiment shown in Figure 21 has a frame 3, a mesh material 4, a first screen door detachment prevention part 6, a second screen door detachment prevention part 7, and a third screen door detachment prevention part 8. The first screen door detachment prevention part 6 is the same as the first screen door detachment prevention part 6 of the first embodiment. Hereinafter, the members and parts of the first screen door detachment prevention part 6 that correspond to the first screen door detachment prevention part 6 of the first embodiment will be denoted by the same names and reference numerals. The screen door 1B of the second embodiment is not provided with the lock part 5 of the screen door 1 of the first embodiment. The frame 21 of the joinery 2B of the second embodiment shown in Figures 22 to 25 is the same as the frame 21 of the joinery 2 of the first embodiment.

[0040] As shown in Figure 21, the second screen door detachment prevention part 7 is provided on the indoor side of the connection part 351 between the upper frame 31 and the first vertical frame 33 and the connection part 352 between the upper frame 31 and the second vertical frame 34. The third screen door detachment prevention part 8 is provided on the indoor side of the connection part 353 between the lower frame 32 and the first vertical frame 33 and the connection part 354 between the lower frame 32 and the second vertical frame 34.

[0041] The second screen door detachment prevention part 7 installed at the connection point 351 between the upper frame 31 and the first vertical frame 33, and the second screen door detachment prevention part 7 installed at the connection point 352 between the upper frame 31 and the second vertical frame 34, are symmetrical in the width direction. The third screen door detachment prevention part 8 installed at the connection point 353 between the lower frame 32 and the first vertical frame 33, and the third screen door detachment prevention part 8 installed at the connection point 354 between the lower frame 32 and the second vertical frame 34, are symmetrical in the width direction. In the following, we will describe the second screen door detachment prevention part 7 installed at the connection point 351 between the upper frame 31 and the first vertical frame 33, and the third screen door detachment prevention part 8 installed at the connection point 353 between the lower frame 32 and the first vertical frame 33. We will omit the description of the second screen door detachment prevention part 7 installed at the connection point 352 between the upper frame 31 and the second vertical frame 34, and the third screen door detachment prevention part 8 installed at the connection point 354 between the lower frame 32 and the second vertical frame 34.

[0042] As shown in Fig. 22, the second screen door detachment prevention part 7 has a second screen door detachment prevention plate material 70. The second screen door detachment prevention plate material 70 is fixed near one end in the width direction of the upper frame 31. The second screen door detachment prevention plate material 70 can be attached at an arbitrary position within a predetermined range in the width direction with respect to the frame 3. The second screen door detachment prevention plate material 70 shown in Fig. 22 is arranged at a position on one side in the width direction within the above range. This position is denoted as the first position. When the second screen door detachment prevention plate material 70 is arranged at the first position, the protruding piece 74 at one end in the width direction of the second screen door detachment prevention plate material 70 contacts the fixed plate part 213b of the first vertical frame 213.

[0043] The second screen door detachment prevention plate material 70 shown in Fig. 23 is arranged on the other side in the width direction within the above range. This position is denoted as the second position. When the second screen door detachment prevention plate material 70 is arranged at the second position, the protruding piece 74 of the second screen door detachment prevention plate material 70 separates from the fixed plate part 213b of the first vertical frame 213.

[0044] As shown in Fig. 24, the third screen door detachment prevention part 8 has a third screen door detachment prevention plate material 80. The third screen door detachment prevention plate material 80 is fixed near one end in the width direction of the lower frame 32. The third screen door detachment prevention plate material 80 can be attached at an arbitrary position within a predetermined range in the width direction with respect to the frame 3. The third screen door detachment prevention plate material 80 shown in Fig. 24 is arranged at a position on one side in the width direction within the above range. This position is denoted as the first position. When the third screen door detachment prevention plate material 80 is arranged at the first position, the protruding piece 74 at one end in the width direction of the third screen door detachment prevention plate material 80 contacts the fixed plate part 213b of the first vertical frame 213.

[0045] The third screen door detachment prevention plate material 80 shown in Fig. 25 is arranged on the other side in the width direction within the above range. This position is denoted as the second position. When the third screen door detachment prevention plate material 80 is arranged at the second position, the protruding piece 74 of the third screen door detachment prevention plate material 80 separates from the fixed plate part 213b of the first vertical frame 213.

[0046] The second screen door detachment prevention plate material 70 and the third screen door detachment prevention plate material 80 are similar members. The parts of the third screen door detachment prevention plate material 80 similar to the second screen door detachment prevention plate material 70 are described with the same names and symbols.

[0047] As shown in FIG. 26, the second net door detachment prevention plate member 70 is a long plate-like member and is installed in a direction extending in the width direction. The second net door detachment prevention plate member 70 is manufactured by processing, for example, a steel plate or the like. The second net door detachment prevention plate member 70 has a fixed plate portion 71, a protruding plate portion 72, and a connecting portion 73. The fixed plate portion 71 and the protruding plate portion 72 are each in the shape of a flat plate with a rectangular plate surface. The fixed plate portion 71 and the protruding plate portion 72 are connected via the connecting portion 73. The fixed plate portion 71 and the protruding plate portion 72 are arranged along the indoor side surface of the frame 3 with their plate surfaces facing the indoor and outdoor directions. The protruding plate portion 72 is arranged on one side in the width direction of the fixed plate portion 71 and slightly on the indoor side of the fixed plate portion 71. The connecting portion 73 connects an edge portion on one side in the width direction of the fixed plate portion 71 and an edge portion on the other side in the width direction of the protruding plate portion 72. The connecting portion 73 forms a step. A long hole 71a penetrating in the indoor and outdoor directions and extending in the width direction is formed in the fixed plate portion 71. A protruding piece 74 protruding indoors is provided at an edge portion on one side in the width direction of the protruding plate portion 72.

[0048] As shown in FIGS. 22 and 23, the indoor plate portion 336 of the first vertical frame 33 is arranged slightly on the indoor side of the indoor side rib 313 of the upper frame 31. That is, a step is formed at the boundary portion between the indoor plate portion 336 of the first vertical frame 33 and the indoor side rib 313 of the upper frame 31. The fixed plate portion 71 is arranged along the indoor side surface of the indoor side rib 313 of the upper frame 31. The protruding plate portion 72 is arranged along the indoor side surface of the indoor plate portion 336 of the first vertical frame 33. The protruding plate portion 72 is arranged on the indoor side of the boundary portion between the indoor side rib 313 of the upper frame 31 and the indoor plate portion 336 of the first vertical frame 33.

[0049] Since the connecting portion 73 between the fixed plate portion 71 and the protruding plate portion 72 is a stepped portion, the outdoor side surface of the fixed plate portion 71 can be brought into contact with the indoor side rib 313 of the upper frame 31, and the indoor side surface of the protruding plate portion 72 can be brought into contact with the indoor plate portion 336 of the first vertical frame 33.

[0050] As shown in Figures 27 and 28, the elongated hole 71a of the fixing plate portion 71 overlaps the elongated hole 313a of the indoor side rib 313 of the upper frame 31 on the indoor side. See also Figure 7 for the elongated hole 313a of the indoor side rib 313. The screw 631 of the operating portion 63 of the first screen door detachment prevention portion 6 is inserted through the elongated hole 71a. The operating portion 63 of the second embodiment has two screws 631, 631. Holes are formed in the regulating portion 62 into which each of the two screws is inserted. The two screws 631, 631 move in the width direction relative to the upper frame 31 together with the regulating portion 62. When the screws 631, 631 are tightened, the fixing plate portion 71 is sandwiched between the heads of the screws 631, 631 and the indoor side rib 313 of the upper frame 31 and fixed to the upper frame 31. When the screws 631, 631 are loosened, the second screen door detachment prevention plate 70 can move in the width direction relative to the frame 3 within the length range of the elongated hole 71a.

[0051] Figures 27 and 28 show the second screen door detachment prevention plate 70 in the first position. Figure 27 is a view of the screen door 1B from the indoor side. A part of the frame 21 is shown in Figure 27. Figure 28 is a view of the door from above, with the upper frame 211 omitted. When the second screen door detachment prevention plate 70 is in the first position, the tip of the protruding plate portion 72, i.e., the protruding piece 74, overlaps with the outer end of the outdoor side rib 332 in the width direction in the indoor-outdoor direction. The protruding plate portion 72 faces the outdoor side rib 332 of the first vertical frame 33. The screen door 1 has a groove portion 76 that opens to one side in the width direction, surrounded by the outdoor side rib 332 of the first vertical frame 33, the outer plate portion 334, and the protruding plate portion 72.

[0052] When the screen door 1B is fitted into the frame 21, and the second screen door detachment prevention plate 70 is positioned in the first position, the protruding piece 74 comes into contact with the fixing plate portion 213b of the first vertical frame 213. The screen door rail 213a of the first vertical frame 213 is inserted into the groove 76. The screen door rail 213a is sandwiched from both the indoor and outdoor directions by the outdoor side rib 332 of the first vertical frame 33 and the protruding plate portion 72 of the second screen door detachment prevention plate 70. As a result, the screen door 1B is attached to the frame 21. The screen door 1B attached to the frame 21 is restricted from moving in the width direction. The screen door 1B attached to the frame 21 is restricted from moving in the indoor and outdoor directions only within the range of the gap between the outdoor side rib 332 and protruding plate portion 72 of the groove 76 and the screen door rail 213a. When the screen door rail 211a of the frame 21 is inserted into the third groove 612d of the movable part 61 of the first screen door detachment prevention part 6, the movement of the screen door 1B attached to the frame 21 in the indoor and outdoor directions is further restricted. In other words, the screen door 1B will not detach from the screen door rail 213a.

[0053] Figures 29 and 30 show the second screen door detachment prevention plate 70 in the second position. Figure 29 is a view of the screen door 1B from the indoor side. A part of the frame 21 is shown in Figure 29. Figure 30 is a view of the joinery from above, with the upper frame 211 omitted. When the second screen door detachment prevention plate 70 is in the second position, the tip of the protruding plate portion 72, i.e., the protruding piece 74, overlaps with the middle part of the width direction of the outdoor side rib 332 in the indoor-outdoor direction. The protrusion dimension of the protruding plate portion 72 from the outer plate portion 334 of the first vertical frame 33 is smaller than the protrusion dimension of the outer plate portion 334 of the outdoor side rib 332.

[0054] When the second screen door detachment prevention plate 70 is positioned in the second position with the screen door 1B fitted into the frame 21, the outdoor rib 332 of the first vertical frame 33 is positioned on the outdoor side of the screen door rail 213a. On the indoor side of the screen door rail 213a, the protruding plate portion 72 is open and does not overlap. As a result, the screen door 1B can move outward relative to the frame 21.

[0055] As shown in Figures 24 and 25, the fixing plate portion 71 of the third screen door detachment prevention plate material 80 is positioned on the indoor side surface of the indoor side rib 323 of the lower frame 32. The protruding plate portion 72 of the third screen door detachment prevention plate material 80 is positioned along the indoor side surface of the indoor side panel portion 336 of the first vertical frame 33. The protruding plate portion 72 is positioned on the indoor side of the connection between the indoor side rib 323 of the lower frame 32 and the indoor side panel portion 336 of the first vertical frame 33.

[0056] Because the connecting portion 73 between the fixed plate portion 71 and the protruding plate portion 72 is a stepped portion, the outdoor side of the fixed plate portion 71 can be brought into contact with the indoor side rib 323 of the lower frame 32, and the indoor side of the protruding plate portion 72 can be brought into contact with the indoor plate portion 336 of the first vertical frame 33.

[0057] As shown in Figures 31 and 32, the fixing plate portion 71 of the third screen door detachment prevention plate material 80 is fixed to the indoor side rib 323 of the lower frame 32 with two screws 811, 811. As shown in Figure 33, the two screws 811, 811 are spaced apart in the width direction. The screws 811, 811 are inserted into the burring 323a formed in the indoor side rib 323 of the lower frame 32. The two screws 811, 811 are inserted into the elongated holes 71a of the fixing plate portion 71. Unlike the screws 631, 631 of the second screen door detachment prevention portion 7, the movement of the two screws 811, 811 in the width direction relative to the frame 3 is restricted. When the screws 811, 811 are tightened, the fixing plate portion 71 is sandwiched between the heads of the screws 811, 811 and the indoor rib 323 of the lower frame 32, and is fixed to the lower frame 32. When the screws 811, 811 are loosened, the third screen door detachment prevention plate material 80 is movable in the width direction. As shown in Figures 31 and 32, the widthwise outer dimensions of the two screws are smaller than the widthwise length of the elongated hole 71a. Therefore, the third screen door detachment prevention plate material 80 is movable in the width direction relative to the frame 3 within the range until the widthwise edge of the elongated hole 71a contacts either of the two screws.

[0058] Figures 24 and 31 show the third screen door detachment prevention plate 80 in its first position. When the third screen door detachment prevention plate 80 is in its first position, the tip of the protruding plate portion 72, i.e., the protruding piece 74, overlaps with the outer end of the outdoor side rib 332 in the width direction in the indoor-outdoor direction. The protruding plate portion 72 faces the outdoor side rib 332 of the first vertical frame 33. The screen door 1 has a groove portion 86 that opens to one side in the width direction, surrounded by the outdoor side rib 332 of the first vertical frame 33, the outer plate portion 334, and the protruding plate portion 72. The shape of the groove portion 86 is the same as the groove portion 76 surrounded by the outdoor side rib 332 of the first vertical frame 33, the outer plate portion 334, and the protruding plate portion 72 of the second screen door detachment prevention plate 70 shown in Figure 28.

[0059] When the screen door 1B is fitted into the frame 21, and the third screen door detachment prevention plate 80 is positioned in the first position, the protruding piece 74 comes into contact with the fixing plate portion 213b of the first vertical frame 213. The screen door rail 213a of the first vertical frame 213 is inserted into the groove 86. The screen door rail 213a is sandwiched from both the indoor and outdoor directions by the outdoor side rib 332 of the first vertical frame 33 and the protruding plate portion 72 of the third screen door detachment prevention plate 80. As a result, the screen door 1B is attached to the frame 21. The screen door 1B attached to the frame 21 has restricted movement in the width direction. The screen door 1B attached to the frame 21 has restricted movement in the indoor and outdoor directions. The screen door 1B attached to the frame 21 can move in the indoor and outdoor directions only within the range of the gap between the outdoor side rib 332 and protruding plate portion 72 of the groove 86 and the screen door rail 213a. As described above, when the screen door rail 211a of the frame 21 is inserted into the third groove 612d of the movable part 61 of the first screen door detachment prevention part 6, the movement of the screen door 1B attached to the frame 21 in the indoor and outdoor directions is further restricted. In other words, the screen door 1B will not detach from the screen door rail 213a.

[0060] Figure 32 shows the third screen door detachment prevention plate 80 positioned in the second position. When the second screen door detachment prevention plate 70 is positioned in the second position, the tip of the protruding plate portion 72, i.e., the protruding piece 74, overlaps with the middle portion of the outdoor side rib 332 in the width direction in the indoor-outdoor direction. The protrusion dimension of the protruding plate portion 72 from the outer plate portion 334 of the first vertical frame 33 is smaller than the protrusion dimension of the outdoor side rib 332 from the outer plate portion 334. When the third screen door detachment prevention plate 80 is positioned in the second position with the screen door 1B fitted into the frame 21, the outdoor side rib 332 of the first vertical frame 33 is positioned on the outdoor side of the screen door rail 213a. On the indoor side of the screen door rail 213a, the protruding plate portion 72 does not overlap and is open.

[0061] When attaching the screen door 1B of the second embodiment to the frame 21, the second screen door detachment prevention plate 70 and the third screen door detachment prevention plate 80 are positioned in the second position. In this state, the screen door 1B is attached to the frame 21 in the same manner as the screen door 1 of the first embodiment. The first screen door detachment prevention part 6 restricts the vertical movement of the screen door 1. When the restricting part 62 of the first screen door detachment prevention part 6 is moved outward in the width direction, the second screen door detachment prevention plate 70 is moved to the first position. Before or after the second screen door detachment prevention plate 70 moves to the first position, the third screen door detachment prevention plate 80 is also moved to the first position.

[0062] The protruding plate portions 72 of the second screen door detachment prevention plate material 70 and the third screen door detachment prevention plate material 80, positioned in the first position, are located on the indoor side of the screen door rail 213a of the first vertical frame 213 and the screen door rail of the second vertical frame 214. Movement of the screen door 1B in the width direction is restricted. Movement of the screen door 1B in the indoor and outdoor directions is restricted. The protruding pieces 74 of the second screen door detachment prevention plate material 70 and the third screen door detachment prevention plate material 80 come into contact with the fixing plate portion 213b of the first vertical frame 213 and the fixing plate portion of the second vertical frame 214. Movement of the screen door 1B in the width direction within the frame 21 can be prevented. In other words, it can be prevented that the screen door 1B rattles from side to side within the frame 21 or that it is positioned to one side in the width direction. In the second embodiment of the screen door 1B, the second screen door detachment prevention part 7 and the third screen door detachment prevention part 8 are provided, making the locking part 5 that was provided in the first embodiment of the screen door 1 unnecessary.

[0063] When removing the screen door 1B of the second embodiment from the frame 21, the second screen door detachment prevention plate 70 and the third screen door detachment prevention plate 80 are moved from the first position to the second position. In this state, the screen door 1B is removed from the frame 21 in the same manner as the screen door 1 of the first embodiment. When the second screen door detachment prevention plate 70 is moved to the second position, the restricting portion 62 of the first screen door detachment prevention portion 6 also moves inward in the width direction.

[0064] When the second screen door detachment prevention plate 70 and the third screen door detachment prevention plate 80 are positioned in the first location, their respective protruding plate portions 72 and the outdoor side rib 332 of the first vertical frame 33 face each other in the indoor / outdoor direction. The protruding piece 74 faces the outer end of the outdoor side rib 332 in the width direction in the indoor / outdoor direction. As a result, groove portions 76 and 86 are formed in the frame 3, surrounded by the protruding plate portion 72, the outdoor side rib 332 of the first vertical frame 33, and the outer plate portion 334. The screen door rail 213a of the first vertical frame 213 is inserted into the groove portions 76 and 86. As a result, when the screen door 1B moves in the indoor / outdoor direction, either the protruding plate portion 72 or the outdoor side rib 332 of the first vertical frame 33 comes into contact with the screen door rail 213a, thus preventing the screen door 1B from coming off the frame 21.

[0065] The second screen door detachment prevention plate 70 is fixed to the restricting portion 62 of the first screen door detachment prevention portion 6 with screws 631. This allows the second screen door detachment prevention plate 70 to be moved between the first and second positions by moving the restricting portion 62 in the width direction.

[0066] This disclosure is not limited to the embodiments described above and can be modified as appropriate. For example, in the above embodiment, the movable part 61 is configured such that the rotating part 612 rotates and moves up and down. The movable part may have a movable body that moves linearly in the vertical direction without rotating, and the movement of this movable body may be restricted by a restricting part. The rotating part 612 may be maintained in a first position by means other than the spring 613.

[0067] The widthwise end of the upper rail groove 318 of the upper frame 31 may not be fitted into the upper end portion of the first vertical frame 33, and upper rail grooves may be formed in the upper end portions of the first vertical frame 33 and the second vertical frame 34 into which the screen door rail 211a of the upper frame 211 is inserted. The first screen door detachment prevention part 6 may be provided in the upper rail groove portion of the upper end portions of the first vertical frame 33 and the second vertical frame 34. The first screen door detachment prevention part 6 may be provided in both the upper rail groove portion of the upper end portions of the first vertical frame 33 and the second vertical frame 34 and the upper rail groove 318 of the upper frame 31. The screen door detachment prevention part may be provided in a location other than both ends of the upper rail groove 318.

[0068] The mechanism for fixing the first vertical frame 33 and the second vertical frame 34 to the frame 21 may be something other than the locking part 5. The screen door 1 does not need to be provided with a mechanism for fixing the first vertical frame 33 and the second vertical frame 34 to the frame 21.

[0069] The screen door 1 does not have to be configured to cover the entire opening 12. The screen door 1 may also be slidable in the width direction inside the frame 21. In such a case, even when the restricting part 62 is positioned in the restricting position and the rotating part 612 is positioned in the third position, the screen door 1 can slide in the width direction, for example, by setting the friction between the screen door rail 211a and the rotating part 612 to be small.

[0070] Mohair may not be provided on the screen door 1. The position where mohair is provided on the screen door 1 may be set as appropriate. For example, mohair may not be provided on the upper frame 31 and lower frame 32 of the screen door 1, but mohair may be provided on the outdoor side ribs 332 of the first vertical frame 33 and second vertical frame 34. Mohair may be provided on the upper frame 31 and lower frame 32 of the screen door 1, but mohair may not be provided on the outdoor side ribs 332 of the first vertical frame 33 and second vertical frame 34. Instead of mohair, a packing, fin-shaped rubber material, sponge, etc. may be provided on the frame 3 of the screen door 1 as a gap-sealing member to close the gap between the frame 3 and the frame body 21.

[0071] The screen door 1 shown in the embodiment is applicable to any space in a house or other building, such as a building, where a door 2 is installed and an opening 12 is provided. Spaces within a building with an opening 12 include, for example, living rooms, bedrooms, kitchens, bathrooms, and toilets, as well as non-living spaces such as corridors and storage rooms. The door 2 may be something other than a sliding sash.

[0072] In the second embodiment of the screen door 1B, the third screen door detachment prevention part 8 may not be provided. In the first embodiment of the screen door 1, the third screen door detachment prevention part 8 may be provided. In the second embodiment of 1B, the locking part 5 may be provided.

[0073] The second screen door detachment prevention plate 70 of the second screen door detachment prevention section 7 may be attached to the upper frame 31 so as to be movable in the width direction between a first position and a second position, separately from the restricting section 62 of the first screen door detachment prevention section 6.

[0074] 1,1B Screen door, 2,2B Joinery, 3 Frame, 3a Upper edge, 4 Mesh material, 6 First screen door detachment prevention part, 7 Second screen door detachment prevention part, 8 Third screen door detachment prevention part, 12 Opening, 13 Outdoor, 14 Indoor, 21 Frame body, 33 First vertical frame, 34 Second vertical frame, 61 Moving part, 62 Regulating part, 63 Operating part, 70 Second screen door detachment prevention plate, 80 Third screen door detachment prevention plate, 211a,213a Screen door rail, 313 Indoor side rib, 313a Slotted hole, 332 Outdoor side rib, 334 Outer plate part, 611 Fixing part, 612 Rotating part, 621 Regulating part body, 622 Protruding part, 631 Screw

Claims

1. A screen door comprising: a frame that can be attached and detached in a sliding manner to the inside of the frame of a door; a mesh material attached to the frame; and a first screen door detachment prevention part attached to the frame, wherein the frame has an upper rail groove portion provided along its upper edge and opening upward so that the upper rail of the frame can be inserted from above, the first screen door detachment prevention part is installed in the upper rail groove portion, the first screen door detachment prevention part comprises: a movable part disposed inside the upper rail groove portion and in contact with the upper rail and movable in the vertical direction; a restricting part disposed inside the upper rail groove portion and restricting the downward movement of the movable part; and an operating part for operating the restricting part, wherein the operating part can operate the restricting part from the inside of the frame.

2. The screen door according to claim 1, wherein the operating unit is capable of switching between a restricted state in which the restricting unit is positioned at a restricted position below the moving unit and the moving unit contacts the restricting unit from above, thereby restricting the downward movement of the moving unit, and an unrestricted state in which the restricting unit is positioned at an unrestricted position to the side of the restricted position, thereby not restricting the vertical movement of the moving unit.

3. The screen door according to claim 1 or claim 2, wherein the upper rail groove room interior plate portion that forms the indoor side of the upper rail groove portion in the frame has an elongated hole that penetrates in the indoor-outdoor direction and extends in the left-right direction, and the operating portion is capable of operating the restricting portion through the elongated hole.

4. The screen door according to any one of claims 1 to 3, wherein the first screen door detachment prevention part is provided at both ends in the left-right direction of the upper rail groove.

5. A screen door according to any one of claims 1 to 4, comprising a second screen door detachment prevention part provided on the indoor side of the frame and movable in the left-right direction relative to the frame, wherein the second screen door detachment prevention part is movable between a first position in which the outer end in the left-right direction protrudes by a predetermined distance outward in the left-right direction from the left-right edge of the frame, and a second position in which the outer end in the left-right direction is positioned inward in the left-right direction from the first position.

6. The screen door according to claim 5, wherein the frame has a main body portion provided along the left-right edge and an outdoor projection portion projecting outward in the left-right direction from the outdoor edge of the main body portion, and when the second screen door detachment prevention portion is positioned in the first position, it projects outward in the left-right direction from the main body portion, and its outer end in the left-right direction faces the tip of the outdoor projection portion in the indoor-outdoor direction.

7. The screen door according to claim 5 or claim 6, wherein the second screen door detachment prevention part is supported by the first screen door detachment prevention part.

8. The screen door according to any one of claims 5 to 7, wherein the frame has vertical frame portions provided along the side edges, and the second screen door detachment prevention portion, when positioned in the first position, is pressed against the vertical frame portions.

9. The screen door according to any one of claims 5 to 8, wherein the frame has a screen door rail provided along the left-right edge and protruding inward in the left-right direction, and when the second screen door detachment prevention part is positioned in the first position, its tip is positioned on the outdoor side of the screen door rail.

10. A window screen comprising a screen door according to any one of claims 1 to 9, and a frame from which the screen door can be attached, wherein the screen door covers the entire opening inside the frame.

Images