door

Abstract

To provide a door with improved locking performance. [Solution] A door having a door frame attached to an opening in a building's main body, a door body attached to the inside of the door frame so that it can be opened and closed around the hanging side, and a resin airtight material attached to a vertical frame located on the hanging side of the door body in the door frame and contacting the visible surface of the door body when closed, wherein the airtight material has a base attached to the vertical frame and a fin portion extending diagonally from the base toward the opening side of the door body and toward the visible surface of the door body when closed, and the fin portion has a return portion at the part that contacts the visible surface that is bent toward the opening side of the door body.

Description

[Technical Field]

[0001] The present disclosure relates to doors. [Background technology]

[0002] Conventionally, there has been known a door that has a door body that is attached inside a door frame so as to be able to open and close around the hinge side, and in which a fin-shaped airtight material is provided on the vertical frame of the door frame so as to come into contact with the visible surface of the door body when closed. The airtight material extends over the entire length of the vertical frame and is provided so as to come into contact with the visible surface of the door body over the entire length (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-65679 Summary of the Invention [Problem to be solved by the invention]

[0004] The fins of airtight materials are formed in a thin plate shape to provide moderate elasticity, which makes them prone to undulating in the longitudinal direction. When the fins are in a skewed state, they do not bend correctly in the intended direction when they come into contact with the inner surface of the door body, resulting in an incomplete airtight seal. The fins also rub against the door body, increasing resistance when opening and closing, and generating abnormal noises. If the fins are made thick to prevent skew, the fins may rebound too strongly, potentially preventing the door body from closing completely, creating problems with door locking.

[0005] The present disclosure aims to provide a door with improved locking properties. [Means for solving the problem]

[0006] The present disclosure relates to a door having a door frame attached to an opening in a building skeleton, a door body attached to the inside of the door frame so as to be able to open and close around the hanging side, and a resin airtight material provided on a vertical frame located on the hanging side of the door body in the door frame and in contact with the visible surface of the door body when closed, wherein the airtight material has a base attached to the vertical frame and a fin portion extending diagonally from the base toward the opening side of the door body and toward the visible surface of the door body when closed, and the fin portion has a return portion at the portion in contact with the visible surface that is bent toward the opening side of the door body. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a front view of the door according to the embodiment, seen from the interior side of the room. [Figure 2] FIG. 2 is a longitudinal cross-sectional view taken along line AA in FIG. [Figure 3] FIG. 2 is a cross-sectional view taken along line BB in FIG. [Figure 4] FIG. 3 is an enlarged view of part C in FIG. [Figure 5] FIG. 3 is an enlarged view of part D in FIG. [Figure 6] FIG. 4 is an enlarged view of part E in FIG. [Figure 7] FIG. 4 is an enlarged view of part F in FIG. 3. [Figure 8] 7 is an enlarged view of an airtight material provided on the vertical frame shown in FIG. 6. [Figure 9] FIG. 9 is an enlarged view of part G in FIG. 8. [Figure 10] 10A and 10B are diagrams illustrating the operation of the airtight material when the door body is opened and closed. [Figure 11] FIG. 10 is a front view of a door according to another embodiment, as viewed from the interior side. [Figure 12] FIG. 12 is a longitudinal cross-sectional view taken along line HH in FIG. [Figure 13] FIG. 12 is a cross-sectional view taken along line II in FIG. [Figure 14] FIG. 13 is an enlarged view of part J in FIG. [Figure 15] FIG. 13 is an enlarged view of part K in FIG. [Figure 16] FIG. 14 is an enlarged view of part L in FIG. [Figure 17] FIG. 14 is an enlarged view of part M in FIG. [Figure 18] 10 is an enlarged view showing another example of a return portion of the airtight material. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Fig. 1 is a view of a door 1 according to one embodiment as seen from inside a room. The door 1 has a rectangular door frame 2 attached to an opening 101 in a building skeleton 100, and a door body 3 attached to the inside of the door frame 2 so as to be able to open and close.

[0009] In the drawings, the outdoor side of door 1 is referred to as "outdoor side X1" and the indoor side of door 1 is referred to as "indoor side X2". The lateral direction when looking at door 1 from the front from the indoor side X2 is referred to as "left and right". The visible surface of door 1 is the surface that is arranged along the indoor-outdoor direction. The direction inside the rectangular door frame 2 is referred to as "inside", and the direction outside the frame is referred to as "outside".

[0010] In this embodiment, the door body 3 is composed of a main door 31 and a sub-door 32. As shown in FIG. 3 , when viewed from the room side X2, the main door 31 is disposed on the left side, and the sub-door 32 is disposed on the right side. More specifically, as shown in FIG. 3 , the main door 31 is attached to the left-side vertical frame 23 by a hinge 311, and the sub-door 32 is attached to the right-side vertical frame 23 by a hinge 321. As shown in FIG. 6 , one blade 311a of a pair of blades 311a, 311b of the hinge 311 is attached to the visible surface 31a on the hanging side of the main door 31, and the other blade 311b is attached to the left-side vertical frame 23. As shown in FIG. 7 , one blade 321a of the pair of blades 321a, 321b of the hinge 321 is attached to the visible surface 32a on the hanging side of the sub-door 32, and the other blade 321b is attached to the right-side vertical frame 23.

[0011] The rotation axes 311c, 321c of the hinges 311, 321, which are the rotation axes of the main door 31 and the sub door 32, are arranged to protrude toward the outside X1 beyond the door body 3. When the main door 31 and the sub door 32 are both closed, the door body 3 closes the opening on the inside of the door frame 2, and the main door 31 and the sub door 32 rotate toward the outside X1 around the rotation axes 311c, 321c of the hinges 311, 321 arranged on the hanging side, thereby opening the opening on the inside of the door frame 2.

[0012] The door frame 2 is formed by framing an upper frame 21, a lower frame 22, and a pair of left and right vertical frames 23, 23 in a rectangular shape. The upper frame 21, the lower frame 22, and the vertical frames 23, 23 are all made of extruded shapes.

[0013] As shown in Figures 2 and 4, the upper frame 21 is composed of an upper frame main body portion 211 arranged on the outside of the room X1, an indoor upper frame portion 212 arranged on the inside of the room X2, a bridge portion 213 connecting the upper frame main body portion 211 and the indoor upper frame portion 212, and an upper frame side airtight material 214.

[0014] The upper frame main body 211 is disposed above the door main body 3 when closed, and extends in the left-right direction. The upper frame main body 211 is formed of a metal such as aluminum, has an approximately rectangular cross section, and has an upper wall 211a, a lower wall 211b, an outdoor wall 211c, and an indoor wall 211d, and has a hollow portion 211e inside. The depth dimension of the upper frame main body 211 is greater than the depth dimension of the door main body 3, and the upper frame main body 211 protrudes further toward the outdoor side X1 than the door main body 3.

[0015] The upper wall portion 211a, the lower wall portion 211b, and the outdoor wall portion 211c are each provided with a protrusion 211f that protrudes into the hollow portion 211e. The protrusion 211f is provided over the entire length of the upper frame main body portion 211. The protrusion 211f increases the strength of the upper frame main body portion 211 and is used as a tapping hole for screwing together the pair of left and right vertical frames 23, 23 in a vertically-attached structure. A protrusion piece 211g that protrudes upward is provided at the end of the upper wall portion 211a on the indoor side X2 over the entire length of the upper frame main body portion 211.

[0016] The indoor-side upper frame portion 212 is positioned on the indoor side X2 relative to the door body 3 when closed, and extends in the left-right direction. The indoor-side upper frame portion 212 is formed of a metal such as aluminum, and has an outdoor-side wall portion 212a, an indoor-side wall portion 212b, and a lower wall portion 212c. The lower wall portion 212c connects the lower ends of the outdoor-side wall portion 212a and the indoor-side wall portion 212b in the indoor-outdoor direction. The indoor-side upper frame portion 212 is positioned on the indoor side X2 at the lower end of the upper frame body portion 211.

[0017] The lower wall portion 212c is provided with a protrusion 212d that protrudes upward. The protrusion 212d is provided over the entire length of the indoor-side upper frame portion 212. The protrusion 212d increases the strength of the indoor-side upper frame portion 212 and is used as a tapping hole for screwing together the pair of left and right vertical frames 23, 23 in a vertically-attached structure. A protrusion piece 212e that protrudes downward beyond the lower wall portion 211b of the upper frame main body portion 211 is provided at the end of the lower wall portion 212c on the outdoor side X1, over the entire length of the indoor-side upper frame portion 212.

[0018] The bridge portion 213 is provided across the lower end of the indoor-side wall portion 211d of the upper frame main body portion 211 and the outdoor-side wall portion 212a of the indoor-side upper frame portion 212. The bridge portion 213 is formed from resin and has thermal insulation properties. The bridge portion 213 integrally connects the upper frame main body portion 211 and the indoor-side upper frame portion 212 and blocks heat transfer between them.

[0019] The upper frame side airtight material 214 is formed of an elastic material made of rubber or resin. The upper frame side airtight material 214 is attached to the exterior side X1 surface of the protruding piece 212e and protrudes toward the exterior side X1. The upper frame side airtight material 214 has a hollow shape and extends over the entire length of the upper frame 21. The upper frame side airtight material 214 has multiple fin portions 214a integrally therewith that protrude toward the door body 3. The upper frame side airtight material 214 contacts the interior side X2 surface of the door body 3 when closed, more specifically, the upper end portions of the interior side surface 31b of the main door 31 and the interior side surface 32b of the secondary door 32, thereby ensuring airtightness on the upper frame 21 side of the door 1.

[0020] The upper frame 21 is attached to the building structure 100 by abutting the indoor side wall portion 211d and protruding piece 211g of the upper frame main body portion 211 against the outdoor side surface 100a of the building structure 100, and abutting the indoor side upper frame portion 212 against the upper inner surface 101a of the opening 101.

[0021] 2 and 5, the lower frame 22 is configured to have a lower frame main body 221 arranged on the outdoor side X1, an indoor side lower frame part 222 arranged on the indoor side X2 of the lower frame main body 221, a plurality of legs 223a, 223b protruding downward, a lower frame side airtight material 224, and a protective member 225. The lower frame main body 221, the indoor side lower frame part 222, and the legs 223a, 223b are integrally formed from a metal such as aluminum.

[0022] The lower frame main body portion 221 is disposed below the door main body 3 when closed, and extends in the left-right direction so as to face the upper frame main body portion 211 in the door frame 2. The lower frame main body portion 221 extends flat in the indoor-outdoor direction. A convex portion 221a that protrudes downward is provided on the underside of the lower frame main body portion 221. The convex portion 221a is provided over the entire length of the lower frame main body portion 221. The convex portion 221a increases the strength of the lower frame main body portion 221 and is also used as a tapping hole for screwing together the pair of left and right vertical frames 23, 23 in a vertically-attached structure.

[0023] The indoor-side lower frame portion 222 is positioned closer to the indoor side X2 than the door body 3 when closed, and extends in the left-right direction so as to face the indoor-side upper frame portion 212 in the door frame 2. The indoor-side lower frame portion 222 is composed of a rising portion 222a rising upward from the end of the lower frame body portion 221 on the indoor side X2, an extending portion 222b extending from a vertically intermediate portion of the rising portion 222a toward the indoor side X2, and an indoor-side wall portion 222c extending vertically from the end of the extending portion 222b on the indoor side X2. The upper end of the extending portion 222b is positioned at the same height as the upper end of the rising portion 222a. As a result, a groove portion 222d is formed in the indoor-side lower frame portion 222 between the rising portion 222a above the extending portion 222b and the indoor-side wall portion 222c.

[0024] The lower end of the indoor side wall portion 222c protrudes downward further than the lower frame main body portion 221. A downward protruding portion 222e is provided on the lower surface of the extension portion 222b. The protruding portion 222e is provided over the entire length of the indoor side lower frame portion 222. The protruding portion 222e increases the strength of the indoor side lower frame portion 222 and is also used as a tapping hole for screwing together the pair of left and right vertical frames 23, 23 in a vertically-attached structure.

[0025] The leg 223a is arranged at the end of the lower frame main body 221 on the outdoor side X1, and the leg 223b is arranged at the end of the lower frame main body 221 on the indoor side X2. The legs 223a and 223b extend over the entire length of the lower frame main body 221 and protrude downward to the same protruding height as the lower end of the indoor side wall portion 222c of the indoor side lower frame portion 222.

[0026] The lower frame side airtight material 224 is formed of an elastic material made of rubber or resin. The lower frame side airtight material 224 is attached to the outdoor side X1 surface of the rising portion 222a of the indoor side lower frame portion 222 so as to protrude toward the outdoor side X1, similar to the upper frame side airtight material 214. The lower frame side airtight material 224 has a hollow shape and extends over the entire length of the lower frame 22. The lower frame side airtight material 224 has multiple fin portions 224a integrally therewith that protrude toward the door body 3. The lower frame side airtight material 224 contacts the indoor side X2 surface of the door body 3 when closed, more specifically, the lower end portions of the indoor side surface 31b of the main door 31 and the indoor side surface 32b of the sub door 32, thereby ensuring airtightness on the lower frame 22 side of the door 1.

[0027] The protective member 225 is made of rubber or resin and is formed in an elongated shape spanning the entire length of the lower frame 22. The protective member 225 is attached to the indoor-side lower frame portion 222 by fitting into the groove 222d of the indoor-side lower frame portion 222, and covers the upper surface of the indoor-side lower frame portion 222. The upper surface of the protective member 225 is arranged so as to be flush with the floor surface FL of the indoor-side X2. The protective member 225 prevents the upper surface of the indoor-side X2, which is located further than the door body 3, from being damaged by the adhesion of sand and the like, and also prevents condensation from forming on the indoor-side X2, which is located further than the door body 3.

[0028] The lower frame 22 is attached to the building skeleton 100 by placing the lower frame main body 221 on the lower inner peripheral surface 101b of the opening 101.

[0029] The pair of left and right vertical frames 23, 23 are disposed on the left and right vertical sides of the door frame 2. The left and right vertical frames 23, 23 have the same structure and are provided symmetrically on the door frame 2.

[0030] As shown in Figures 3, 6 and 7, the vertical frame 23 is composed of a vertical frame main body portion 231 arranged on the outside of the room X1, an indoor vertical frame portion 232 arranged on the inside of the room X2, a bridge portion 233 connecting the vertical frame main body portion 231 and the indoor vertical frame portion 232, a first vertical frame side airtight material 234, and a second vertical frame side airtight material 235.

[0031] The vertical frame main body 231 is disposed on the left and right sides of the door main body 3 when closed. The vertical frame main body 231 is formed of a metal such as aluminum and has a generally rectangular cross section, including an outer wall 231a, an inner wall 231b, an outdoor-side wall 231c, and an indoor-side wall 231d, and has a hollow portion 231e inside. The inner wall 231b faces the projection surfaces 31a and 32a on the hanging sides of the main door 31 and the sub-door 32 when closed. A protruding piece 231f protruding outward to the left and right is provided at the end of the outdoor-side X2 of the outer wall 231a, over the entire length of the vertical frame main body 231. The depth dimension of the vertical frame main body 231 is greater than the depth dimension of the door main body 3, and the vertical frame main body 231 protrudes further toward the outdoor side X1 than the door main body 3 when closed.

[0032] A recess 231g recessed at a right angle toward the hollow portion 231e is formed at the corner between the inner wall portion 231b and the outdoor wall portion 231c. Parts of the rotation axes 311c, 321c of the hinges 311, 321 are disposed within the recess 231g, and are prevented from protruding further toward the outdoor side X1 than the vertical frame 23.

[0033] The indoor-side vertical frame portion 232 is positioned closer to the indoor side X2 than the door body 3 when closed. The indoor-side vertical frame portion 232 is formed of a metal such as aluminum, and has an outdoor-side wall portion 232a, an indoor-side wall portion 232b, and an inner wall portion 232c. The inner wall portion 232c connects the inner ends of the outdoor-side wall portion 232a and the indoor-side wall portion 232b in the indoor-outdoor direction. The indoor-side vertical frame portion 232 is positioned on the indoor side X2 at the inner end of the vertical frame main body portion 231. A protruding piece 232d that protrudes inward more than the inner wall portion 231b of the vertical frame main body portion 231 is provided at the outdoor-side X1 end of the inner wall portion 232c over the entire length of the indoor-side vertical frame portion 232.

[0034] The bridge portion 233 is provided across the inner end of the indoor-side wall portion 231d of the vertical frame main body portion 231 and the outdoor-side wall portion 232a of the indoor-side vertical frame portion 232. The bridge portion 233 is formed from resin and has thermal insulation properties. The bridge portion 233 integrally connects the vertical frame main body portion 231 and the indoor-side vertical frame portion 232 and blocks heat transfer between them.

[0035] The first vertical-frame-side airtight material 234 is formed of an elastic material made of rubber or resin. The first vertical-frame-side airtight material 234 is attached to the exterior-side X1 surface of the protruding piece 232d and protrudes toward the exterior side X1. The first vertical-frame-side airtight material 234 has a hollow shape and extends over the entire length of the vertical frame 23. The first vertical-frame-side airtight material 234 has multiple fin portions 234a integrally formed therewith that protrude toward the door body 3. The first vertical-frame-side airtight material 234 contacts the interior-side X2 surface of the door body 3 when closed, more specifically, the end portions on the hanging side of the interior-side surface 31b of the main door 31 and the interior-side surface 32b of the secondary door 32, thereby ensuring airtightness on the vertical frame 23 side of the door 1.

[0036] The second vertical-frame-side airtight material 235 is attached to the inner wall portion 231b of the vertical-frame main body portion 231, and extends over the entire length of the vertical frame 23. The tip side of the second vertical-frame-side airtight material 235 extends obliquely toward the visible surfaces 31a, 32a on the hanging side of the main door 31 and the secondary door 32. The second vertical-frame-side airtight material 235 elastically contacts the visible surfaces 31a, 32a of the main door 31 and the secondary door 32 when closed, thereby ensuring airtightness between the vertical frame 23 and the main door 31, and between the vertical frame 23 and the secondary door 32. Details of the second vertical-frame-side airtight material 235 will be described further below.

[0037] The vertical frame 23 is attached to the building structure 100 by abutting the indoor side wall portion 231d and protruding piece 231f of the vertical frame main body portion 231 against the outdoor side surface 100a of the building structure 100, and abutting the indoor side vertical frame portion 232 against the left and right vertical portion inner surfaces 101c of the opening 101.

[0038] Next, the second vertical-frame-side airtight material 235 will be described with reference to Figures 8 to 10. The second vertical-frame-side airtight materials 235, 235 attached to the left and right vertical frames 23, respectively, have the same structure and are provided symmetrically on the vertical frames 23.

[0039] The second vertical-frame-side airtight material 235 is configured to have a base 2351 attached to the inner wall 231b of the vertical-frame main body 231 of the vertical frame 23, and a fin 2352 extending obliquely from the base 2351. The base 2351 and the fin 2352 are integrally molded.

[0040] The base 2351 is formed in a flat plate shape and is fixed to the end of the inner wall portion 231b of the vertical frame main body portion 231 on the indoor side X2 with a rivet Rv that penetrates the base 2351 from the inside (see FIGS. 6 and 7). The base 2351 may be fixed to the inner wall portion 231b of the vertical frame main body portion 231 with a screw. The base 2351 may also be fixed to the inner wall portion 231b of the vertical frame main body portion 231 with double-sided adhesive tape.

[0041] The fin portion 2352 has the same thickness as the base portion 2351 and is integrally connected to the end portion on the outside side X1. The fin portion 2352 extends obliquely from the base portion 2351 toward the outside side X1, which is the opening direction side of the main door 31 and the sub door 32, and toward the visible surfaces 31a, 32a on the hanging side of each of the main door 31 and the sub door 32 when closed.

[0042] A return portion 2352a is formed integrally with the fin portion 2352 at the tip portion that contacts the visible surfaces 31a, 32a of the main door 31 and the secondary door 32. The return portion 2352a is formed by folding back the tip of the fin portion 2352 toward the outside side X1, which is the opening direction side of the main door 31 and the secondary door 32. As shown in FIG. 9 , a tip point Tp1 along the curved direction of the return portion 2352a is positioned closer to the base 2351 (towards the vertical frame 23) than a distal point Tp2 of the fin portion 2352 that is farthest inward from the base 2351.

[0043] The return portion 2352a is formed by curving the tip of the fin portion 2352 into an arc shape. A U-groove-shaped inner space S is formed on the inside of the folding direction of the return portion 2352a along the length direction of the second vertical-frame-side airtight material 235. The tip point Tp1 of the return portion 2352a is located closer to the base 2351 (towards the vertical frame 23) than the position Tp3 of the groove bottom of the inner space S. The fin portion 2352 comes into contact with a portion of the outer arc surface As of the return portion 2352a on the projection surfaces 31a, 32a on the hanging side of the main door 31 and the sub-door 32, on the indoor side X2 of the hinges 311, 321.

[0044] As shown in Figures 8 and 9, the return portion 2352a has a spherical portion 2352b integrally formed at its tip. The spherical portion 2352b is a portion having a spherical cross-sectional shape. The spherical portion 2352b is a portion formed in a cylindrical shape at the tip of the return portion 2352a along the longitudinal direction of the second vertical-frame-side airtight material 235. The outer peripheral surface of the spherical portion 2352b smoothly continues to the arc surface As of the return portion 2352a without forming any steps. By having the spherical portion 2352b, the return portion 2352a has a thicker thickness at the tip that curves toward the vertical frame 23 side.

[0045] The tip end of the fin portion 2352 is effectively reinforced by the return portion 2352a, so the fin portion 2352 has excellent linearity along its length. Even if the fin portion 2352 is not formed thick or hard, the fin portion 2352 does not undulate and can always elastically deform in the correct direction toward the outside door X1 and the vertical frame 23 when it comes into contact with the visible surfaces 31a, 32a of the main door 31 and the sub-door 32. This prevents incomplete airtightness, prevents the fin portion 2352 from rubbing against the door body, increasing resistance when opening and closing, and prevents the generation of abnormal noise. Even if the fin portion 2352 is not formed rigidly and is not tightly fitted to the visible surfaces 31a, 32a, good airtightness between the visible surfaces 31a, 32a can be ensured, which reduces the repulsion of the fin portion 2352 and eliminates the risk of the main door 31 and the sub door 32 not being able to close completely, improving door locking performance.

[0046] FIG. 10 shows the change in the contact state between the visible surface 31a of the main door 31 and the fin portion 2352 of the second vertical-frame-side airtight material 235. When the main door 31 is in the open state, the fin portion 2352 of the second vertical-frame-side airtight material 235 rises obliquely inward relative to the base portion 2351. When the main door 31 rotates from this state in the closing direction toward the room side X2 around the rotation axis 311c of the hinge 311, the visible surface 31a of the main door 31 comes into contact with the arcuate surface As of the return portion 2352a. As the main door 31 further rotates in the closing direction, the contact angle with the arcuate surface As changes as the visible surface 31a moves, but the visible surface 31a always continues to contact along the arcuate surface As of the return portion 2352a. Therefore, the deformation state of the fin portion 2352 does not become unstable from the time it starts to contact the visible surface 31a until the main door 31 is completely closed. The same applies to the contact between the visible surface 32a of the sub-door 32 and the fin portion 2352 of the second vertical frame side airtight material 235.

[0047] The tip of the return portion 2352a is reinforced by having a spherical portion 2352b at the tip, which effectively maintains the straight state of the tip of the fin portion 2352, allowing the return portion 2352a to stably contact the visible surfaces 31a, 32a of the main door 31 and the sub door 32.

[0048] In the second vertical-frame-side airtight material 235, the base 2351 and the fin portion 2352 are integrally molded from resin, but the base 2351 and the fin portion 2352 have different hardnesses. In the second vertical-frame-side airtight material 235, the fin portion 2352 is softer than the base 2351. In the second vertical-frame-side airtight material 235, the base 2351 is a semi-rigid portion, and the fin portion 2352 is a soft portion. The second vertical-frame-side airtight material 235 is formed, for example, by two-color molding using resins whose hardnesses are different for the base 2351 and the fin portion 2352.

[0049] The base 2351 is desirably formed from a resin having a durometer A hardness of 85 or more and 95 or less, from the viewpoint of enabling the second vertical frame side airtight material 235 to be stably fixed to the inner wall portion 231b of the vertical frame main body portion 231. The fin portion 2352 is desirably formed from a resin having a durometer E hardness of 25 or more and 35 or less, from the viewpoint of further improving the locking performance.

[0050] The resin used for the second vertical frame side airtight material 235 is not particularly limited as long as it satisfies the above-mentioned hardness, but for example, an olefin-based resin, specifically an olefin-based thermoplastic elastomer (TPO), can be used for the base 2351. For example, a foamed olefin-based resin, specifically a foamed olefin-based thermoplastic elastomer (foamed TPO) can be used for the fin portion 2352.

[0051] 11 is a view of a door 1A according to another embodiment as seen from the inside of the room. Since the same reference numerals as those in the door 1 described above indicate parts with the same configuration, the above description is used to refer to those parts, and the following description will focus on different configurations.

[0052] As shown in FIGS. 12 and 13, the door 1A is formed so that the surfaces (the exterior side surface 31c of the main door 31 and the exterior side surface 32c of the secondary door 32) on the exterior side X1 of the door frame 2A and the door main body 3A (main door 31 and secondary door 32) are flat. This gives the door 1A excellent design. The rotation shafts 311c, 321c of the hinges 311, 321 are disposed closer to the interior side X2 than the exterior side surfaces 31c, 32c of the door main body 3A and do not protrude toward the exterior side X1. The ends of the exterior side surfaces 31c, 32c of the main door 31 and the secondary door 32 on the hanging side are formed with extensions 31d, 32d that extend the exterior side surfaces 31c, 32c toward the vertical frame 23A, thereby covering the rotation shafts 311c, 321c of the hinges 311, 321 from the exterior side X1.

[0053] The door frame 2A is similar to the door frame 2 described above in that it is constructed by framing an upper frame 21A, a lower frame 22A, and a pair of left and right vertical frames 23A, 23A in a rectangular shape, but the specific structure of each frame is different.

[0054] As shown in Figures 12 and 14, the depth dimension of the upper frame main body 211 of the upper frame 21A is smaller than the depth dimension of the door main body 3, and the upper frame main body 211 is recessed toward the indoor side X2 relative to the door main body 3. The lower end of the outdoor wall 211c is recessed in a stepped shape toward the indoor side X2 relative to the upper end. A cover member 215 made of a metal such as aluminum is attached to the outdoor wall 211c of the upper frame main body 211 so as to cover this stepped recess. The cover member 215 is attached by engaging from above and the outdoor side X1 with an engagement piece 211c1 formed on the upper end of the outdoor wall 211c and protruding toward the outdoor side X1. The protrusion 212d of the indoor side upper frame portion 212 of the upper frame 21A is provided on the outdoor wall 212a and protrudes toward the indoor side X2.

[0055] 12 and 15, lower frame main body 221 of lower frame 22A is provided with leg portion 223c between leg portion 223a and leg portion 223b, protruding downward to the same protruding height as legs 223a and 223b. Convex portion 221a is provided between legs 223a and 223c and between legs 223b and 223c.

[0056] 13, 16, and 17, the interior of the vertical frame main body 231 of the vertical frame 23A is divided into two in the indoor / outdoor direction by a partition wall 231h. As a result, two hollow portions 231e1 and 231e2 are formed inside each of the vertical frame main body 231. The recessed portion 231g of the vertical frame main body 231 is formed larger than the recessed portion 231g of the above-mentioned vertical frame 23, and accommodates the rotation shafts 311c and 321c of the hinges 311 and 312 so that they do not protrude further toward the outdoor side X1 than the vertical frames 23 and 23A.

[0057] In this door frame 2A, the second vertical-frame-side airtight material 235 is attached to the bridge portion 233 of the vertical frame 23A from the inside with a screw Sc that penetrates the base portion 2351, as shown in Figures 16 and 17. The second vertical-frame-side airtight material 235 may be attached to the bridge portion 233 with a rivet. The second vertical-frame-side airtight material 235 may be attached to the bridge portion 233 with double-sided adhesive tape.

[0058] 18 shows another example of a second vertical-frame-side airtight material. The second vertical-frame-side airtight material 235A differs from the above-described second vertical-frame-side airtight material 235 only in that the spherical portion 2352b is not provided on the return portion 2352a of the fin portion 2352. This second vertical-frame-side airtight material 235A also achieves the same effect as the above-described second vertical-frame-side airtight material 235, but by not providing the spherical portion 2352b, the above-described second vertical-frame-side airtight material 235 is superior in terms of the effect of the fin portion 2352 being in stable contact with the visible surface of the door body without warping.

[0059] The above-described embodiment provides the following advantages: A door 1 includes door frames 2, 2A attached to an opening 101 of a building skeleton 100, a door body 3 attached to the inside of the door frames 2, 2A so as to be able to open and close around the hanging side, and a resin second vertical frame side airtight material 235 provided on vertical frames 23, 23A arranged on the hanging side of the door body 3 in the door frames 2, 2A, and contacting visible surfaces 31a, 32a on the hanging side of the main door 31 and the sub door 32 of the door body 3 when closed. , 1A, the second vertical frame side airtight material 235 has a base 2351 attached to the vertical frames 23, 23A, and a fin portion 2352 extending obliquely from the base 2351 toward the projection surfaces 31a, 32a on the opening direction side of the door body 3 and on the hanging side of the main door 31 and the sub-door 32 when closed, and the fin portion 2352 has a return portion 2352a that is curved toward the opening direction side of the door body 3 at the portion that contacts the projection surfaces 31a, 32a. As a result, the fin portion 2352 has excellent linearity and does not become wavy or twisted. Since the fin portion 2352 can be bent in the desired direction without being tightly pressed against the projection surfaces 31a, 32a, a good seal can be achieved between the projection surfaces 31a, 32a. There is no risk of the main door 31 and the sub door 32 not closing completely, or of the main door 31 and the sub door 32 rubbing against the second vertical frame side airtight material 235 when opening and closing, which causes abnormal noise, and door locking performance is improved.

[0060] In the above embodiment, the return portion 2352a is curved in an arc shape. As a result, as the main door 31 and the sub door 32 rotate, the visible surfaces 31a, 32a always continue to contact along the arc surface As of the return portion 2352a, so the deformation state of the fin portion 2352 does not become unstable.

[0061] In the above embodiment, the return portion 2352a has a spherical portion 2352b at its tip. This further reinforces the tip side of the return portion 2352a and effectively maintains the straight state of the fin portion 2352, allowing the fin portion 2352 to stably contact the visible surfaces 31a, 32a of the main door 31 and the sub door 32.

[0062] In the above embodiment, the outer surface of the return portion 2352a is formed in an arc shape, which allows the fin portion 2352 to elastically deform more smoothly when the return portion 2352a comes into contact with and is pressed against the visible surfaces 31a, 32a of the main door 31 and the sub door 32.

[0063] In the above embodiment, the base 2351 has a durometer A hardness of 85 or more and 95 or less, and the fin 2352 has a durometer E hardness of 25 or more and 35 or less. This allows the base 2351 to be a semi-rigid part and the fin 2352 to be a soft part, so that the second vertical frame side airtight material 235 can be stably fixed to the inner wall 231b of the vertical frame main body 231 and further improves the locking performance.

[0064] In the above embodiment, the base 2351 is formed from an olefin resin, and the fin 2352 is formed from a foamed olefin resin. This makes it possible to easily form the base 2351 that constitutes the semi-hard portion of the second vertical-frame-side airtight material 235, and also to easily form the fin 2352 that constitutes the soft portion of the second vertical-frame-side airtight material 235.

[0065] The present disclosure includes a door according to the following aspects.

[0066] <Aspect 1> a door frame attached to an opening in the building frame; A door body attached to the inside of the door frame so as to be able to open and close around the hinge side; A door having an airtight material made of resin that is provided on a vertical frame arranged on the hanging side of the door body in the door frame and contacts the visible surface of the door body when closed, The airtight material has a base portion attached to the vertical frame and a fin portion extending obliquely from the base portion toward the opening direction of the door body and toward the visible surface of the door body when closed, The door has a fin portion that has a return portion that is bent toward the opening direction of the door body at a portion that contacts the visible surface.

[0067] <Aspect 2> The door of aspect 1, wherein the return portion is curved in an arc shape.

[0068] <Aspect 3> The door according to aspect 1 or 2, wherein the return portion has a spherical portion at a tip.

[0069] <Aspect 4> The base has a durometer A hardness of 85 or more and 95 or less, The door according to any one of aspects 1 to 3, wherein the fin portion has a Durota E hardness of 25 or more and 35 or less.

[0070] <Aspect 5> The base is formed from an olefin-based resin. 5. The door according to claim 4, wherein the fin portion is formed of a foamed olefin-based resin.

[0071] The present disclosure is not limited to the above-described embodiments, and modifications, improvements, etc., within the scope that can achieve the objectives of the present disclosure are included in the present disclosure. For example, the door body is not limited to one composed of a main door and a sub-door, but may be composed of a single door. Airtight materials with a configuration similar to the second vertical frame side airtight material 235, 235A may be used as airtight materials provided in other parts of the door 1, 1A, specifically, as an upper frame side airtight material provided in the upper frame, a lower frame side airtight material provided in the lower frame, a first vertical frame side airtight material provided in the vertical frame, etc., or as airtight materials provided between the main door 31 and the sub-door 32. Furthermore, airtight materials with a configuration similar to the second vertical frame side airtight material 235, 235A may be used as any airtight material provided in a door, regardless of the type and structure of the door, and may also be used as airtight materials provided in sleeves, mullions, etc. provided in the door. [Explanation of symbols]

[0072] 1,1A Door, 2,2A Door frame, 23,23A Vertical frame, 235 Second vertical frame side airtight material (airtight material), 2351 Base, 2352 Fin portion, 2352a Return portion, 2352b Spherical portion, 3 Door body, 31 Main door, 32 Sub-door, 31a,32a Visible surface, 100 Building frame, 101 Opening

Claims

1. a door frame attached to an opening in the building frame; A door body attached to the inside of the door frame so as to be able to open and close around the hinge side; A door having an airtight material made of resin that is provided on a vertical frame arranged on the hanging side of the door body in the door frame and contacts the visible surface of the door body when closed, The airtight material has a base portion attached to the vertical frame and a fin portion extending obliquely from the base portion toward the opening direction of the door body and toward the visible surface of the door body when closed, The door has a fin portion that has a return portion that is bent toward the opening direction of the door body at a portion that contacts the visible surface.

2. The door according to claim 1 , wherein the return portion is curved in an arc shape.

3. The door according to claim 1 or 2, wherein the barb has a spherical tip.

4. the base portion has a durometer A hardness of 85 or more and 95 or less, 3. The door according to claim 1, wherein the fin portion has a durometer E hardness of 25 or more and 35 or less.

5. the base is formed from an olefin-based resin, The door according to claim 4, wherein the fin portion is formed of a foamed olefin-based resin.

Images