door

Abstract

To provide a door that can improve heat insulation properties of the vertical frame part.SOLUTION: A door includes a door frame having a vertical frame and a door body arranged within the door frame. A vertical frame 30 includes a vertical frame body 31 made of aluminum and a cover material 35 made of synthetic resin. The vertical frame body 31 has a depth surface 3141 facing the door body and engagement groove parts 321, 322, 323 to which the cover material 35 is attached. The engagement groove parts are provided on the outer peripheral side of the vertical frame 30 with respect to the depth surface 3141 in the width direction. The cover material 35 has engagement pieces 361, 362, 363 attached to the engagement groove parts, and a cover body 37 provided at a position overlapping the gap 103 between the depth surface and the door body in the depth direction.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a door installed at a back door of a building, and more particularly to a door with improved thermal insulation performance. [Background technology]

[0002] For doors installed at back doors, etc., an insulated door is known that has improved insulating performance by attaching a synthetic resin frame to almost the entire interior side of the body frame located at the opening edge of the body (see, for example, Patent Document 1). The insulated door has a vertical frame made of aluminum extrusion, and this vertical frame has an engaging piece protruding from the visible surface, and this engaging piece is engaged with a resin member that holds a sealing material that abuts against the vertical door frame of the door main frame.

[0003] Insulated doors have hinges between the vertical frame and the vertical door frame, and a certain gap is formed between them so that the vertical door frame at the door edge does not come into contact with the vertical frame when the door is opened or closed. The engagement piece of the vertical frame is exposed in this gap. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-50760 Summary of the Invention [Problem to be solved by the invention]

[0005] The gap between the vertical frame and the vertical door frame is located on the outside of the seal that abuts against the vertical door frame, so outside air flows in, and the engaging piece that is located in a position that overlaps this gap in the forward direction also comes into contact with the outside air. As a result, the surface temperature of the resin material that engages with the engaging piece also drops, resulting in a problem of reduced insulation performance.

[0006] An object of the present invention is to provide a door that can improve the thermal insulation performance of the vertical frame portion. [Means for solving the problem]

[0007] The door of the present invention comprises a door frame having a vertical frame and a door body arranged within the door frame, the vertical frame comprising an aluminum vertical frame body and a synthetic resin cover material, the vertical frame body having a projection surface facing the door body and an engagement groove portion to which the cover material is attached, the engagement groove portion being positioned closer to the outer periphery of the vertical frame than the projection surface in the projection direction, and the cover material having an engagement piece portion attached to the engagement groove portion and a cover body arranged in a position overlapping in the projection direction with the gap between the projection surface and the door body. [Effects of the Invention]

[0008] According to the present invention, a door can be provided that can improve the thermal insulation performance of the vertical frame portion. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is an external view showing a door according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a vertical cross-sectional view of the door of the first embodiment. [Figure 3] FIG. 2 is a cross-sectional view of the door of the first embodiment. [Figure 4] FIG. 2 is an enlarged cross-sectional view showing the upper frame of the first embodiment. [Figure 5] FIG. 2 is an exploded perspective view showing the connecting portion of the upper frame and vertical frame of the first embodiment. [Figure 6] FIG. 2 is an enlarged cross-sectional view showing the vertical frame of the first embodiment. [Figure 7] FIG. 2 is an exploded perspective view showing the vertical frame body and cover material of the first embodiment. [Figure 8] FIG. 10 is a vertical cross-sectional view of a door according to a second embodiment. [Figure 9] FIG. 10 is a cross-sectional view of a door according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] [First embodiment] A first embodiment of the present invention will be described below with reference to the drawings. As shown in Figures 1 to 3, the door 1 of the first embodiment is a ventilation door to be placed at the back door of a building, and comprises a door frame 2 attached to the opening of the back door of the building, a door body 5 placed within this door frame 2, a ventilation window frame 6 placed within the door body 5, an outer shoji screen 7 and an inner shoji screen 8 for a casement window placed within the ventilation window frame 6, and a mesh lattice 9 attached to the exterior surface of the door body 5.

[0011] The door frame 2 is formed by joining an upper frame 10, a lower frame 20, and left and right vertical frames 30, 40 into a rectangular frame shape. The upper frame 10 is configured to include an upper frame body 11 made of aluminum extrusion material and a synthetic resin cover material 15. Similarly, the lower frame 20 and vertical frames 30, 40 are configured to include a lower frame body 21 and vertical frame bodies 31, 41 made of aluminum extrusion material and synthetic resin cover materials 25, 35, 45. Airtight materials 19, 29, 39, 49 that abut the interior surface of the door body 5 are attached to each cover material 15, 25, 35, 45. These airtight materials 19, 29, 39, 49 prevent outside air from flowing into the interior space through gaps 101-104 between the door frame 2 and the door body 5.

[0012] The door body 5 is composed of a frame made up of an upper frame 51, a lower frame 52, and left and right vertical frames 53, 54, with a ventilation window frame 6, an outer shoji screen 7, and an inner shoji screen 8 assembled inside. The upper frame 51, lower frame 52, and vertical frames 53, 54 are each made up of a combination of an aluminum exterior member and a synthetic resin interior member, improving insulation. A vertical frame 53 on the hanging side of the door body 5 is attached to the vertical frame 30 on the hanging side of the door frame 2 via a hinge 55. This allows the door body 5 to be attached to the door frame 2 so that it can be opened and closed freely. A handle 56 is attached to a vertical frame 54 on the door tip side of the door body 5. An airtight material 57 is attached to the vertical frame 53 to close the gap 103 on the outdoor side of the airtight material 39. An airtight material 58 is attached to the edge cover portion of the vertical frame 54.

[0013] The ventilation window frame 6 comprises an upper ventilation frame 61, a lower ventilation frame 62, and vertical ventilation frames 63, 64. The upper ventilation frame 61 is positioned and fixed between the upper ends of the left and right vertical ventilation frames 63, 64. The lower ventilation frame 62 is positioned between the lower ends of the vertical ventilation frames 63, 64. In this embodiment, the upper part of the lower frame 52 is positioned between the lower ends of the vertical ventilation frames 63, 64 and fastened with screws. The lower ventilation frame 62 is slidably engaged with the lower frame 52 and is integrated with it. The ventilation vertical frames 63, 64 are arranged on the inner periphery side of the vertical frames 53, 54 and are also screwed to the vertical frames 53, 54.

[0014] The outer shoji screen 7 and the inner shoji screen 8 are movable shoji screens that can move up and down along the vertical ventilation frames 63, 64. The outer shoji screen 7 is made up of an aluminum upper frame 71, a lower frame 72, and left and right vertical frames 73, 74 assembled into a rectangular frame shape. Double-glazed glass 75 is attached to the inner peripheral surface of each frame 71 to 74 via a gasket. The inner shoji screen 8 is made up of an aluminum upper frame 81, a lower frame 82, and left and right vertical frames 83, 84 assembled into a rectangular frame shape. Double-glazed glass 85 is attached to the inner peripheral surface of each frame 81 to 84 via a gasket. Since each of the frames 71, 73, 74, 81 to 84 other than the lower frame 72 is exposed to the indoor space, each is made up of a combination of an aluminum exterior member and a synthetic resin interior member, improving heat insulation. As shown in Figures 2 and 3, a mesh lattice 9 is removably attached with screws or the like to the exterior surface of the door body 5. A door closer 90 is also attached to the upper frame 10 and the upper stile 51 of the door body 5.

[0015] [Upper frame body] As described above, the upper frame 10 comprises the upper frame body 11 and the cover material 15. 4 and 5, the upper frame body 11 has an upper projection piece 111, an exterior projection piece 112, a lower projection piece 113, an interior projection piece 114, and an attachment piece 115 that is attached to a frame (not shown). Therefore, the upper frame body 11 has a hollow portion defined by the upper projection piece 111, the exterior projection piece 112, the lower projection piece 113, and the interior projection piece 114. The underside of the upper frame body 11, i.e., the lower projection piece 113, is provided with an outdoor engagement groove 12 formed at a position in the projection direction that is closer to the interior of the room than the indoor surface of the door body 5, a hanging piece 13 hanging down from the underside of the upper frame body 11 at a position closer to the interior than the outdoor engagement groove 12, and an indoor engagement groove 14 formed at a position closer to the interior of the room than the hanging piece 13.

[0016] The exterior engagement groove 12 includes a groove opening 121 and a locking groove 122 formed continuously from the groove opening 121 toward the interior of the room. That is, a protruding piece 133 that protrudes toward the exterior is formed near the base end of the hanging piece 13, and the locking groove 122 is defined and formed between this protruding piece 133 and the lower projection piece 113. The groove opening 121 is also formed between the tip of the protruding piece 133 and a bent piece 1131 with an L-shaped cross section that is formed on the lower projection piece 113. The opening width dimension in the projection direction of the groove opening 121 is set larger than the projection dimension of an engagement protrusion 1511 of the exterior engagement piece 151 described below, and is configured so that the engagement protrusion 1511 can be inserted into the groove opening 121.

[0017] The hanging piece 13 has a vertical surface portion 131 extending downward from the underside of the upper frame body 11, and a horizontal surface portion 132 extending from the lower end of the vertical surface portion 131 toward the inside of the room. The outdoor surface of the vertical surface portion 131 and the lower surface of the horizontal surface portion 132 are continuous with each other via an inclined surface 134 that is inclined relative to these surfaces.

[0018] The interior engaging groove 14 includes a hook portion 141 that extends downward from the lower projection portion 113 and has a protrusion at its lower end that protrudes toward the interior of the room, and a protrusion 142 that extends downward from a position on the interior side of the hook portion 141. An inclined surface is formed on the underside of the protrusion of the hook portion 141.

[0019] [Top frame cover material] The cover material 15 has an outdoor engaging piece 151 that engages with the outdoor engaging groove 12, an indoor engaging piece 152 that engages with the indoor engaging groove 14, a connecting piece 153 that connects the outdoor engaging piece 151 and the indoor engaging piece 152, and an attachment piece 154 that is attached to a body (not shown), and is formed with a generally U-shaped cross section. The cover material 15 is molded as a single unit from a synthetic resin material such as polyvinyl chloride. In addition, colored layers are provided on the portions of the cover material 15 that are exposed to the indoor and outdoor spaces by two-color molding. The outdoor engaging piece 151 is disposed on the outdoor side of the hanging piece 13 with a space therebetween, and the indoor engaging piece 152 is disposed on the indoor side of the hanging piece 13 with a space therebetween. In other words, the outdoor engaging piece 151 and the indoor engaging piece 152 are disposed apart from the hanging piece 13 in the forward direction.

[0020] An engagement protrusion 1511 that protrudes toward the indoor side is formed at the tip, i.e., the upper end, of the outdoor engagement piece 151. The tip of the engagement protrusion 1511 is formed in an arc shape. The lower end of the outdoor engagement piece 151 extends toward the indoor side from approximately the middle position of the outdoor engagement piece 151 in the up-down direction, and then extends diagonally downward, and then extends downward to connect with the indoor engagement piece 152. For this reason, the outdoor engagement piece 151 has an inclined surface 1512 that faces the inclined surface 134 of the hanging piece 13. A predetermined clearance is secured between this inclined surface 1512 and the inclined surface 134 to improve thermal insulation. Furthermore, a holding piece 155 for holding the airtight material 19 is formed on the outdoor side of the lower part of the outdoor engaging piece 151 . At the tip, that is, the upper end, of the indoor side engaging piece 152, an engaging portion 1521 is formed which extends to the outdoor side and further extends upward to have a generally L-shaped cross section.

[0021] A generally Z-shaped metal fitting 17 is fixed to the hanging piece 13 with a screw 171. The metal fitting 17 and the screw 171 are disposed within the space surrounded by the cover material 15 and are not exposed to the outside. That is, the upper half of the metal fitting 17 is disposed along the indoor surface of the vertical surface portion 131, and the lower half of the metal fitting 17 is disposed along the outdoor surface of the indoor-side engaging piece portion 152. The head of the screw 171 is positioned in the space between the outdoor engaging piece 151 and the hanging piece 13, and the tip of the screw 171 is positioned in the space between the hanging piece 13 and the indoor engaging piece 152. A bracket 91 of the door closer 90 is arranged along the interior surface of the interior engaging piece 152. This bracket 91 is fixed to the metal fitting 17 with a screw 172 that passes through the interior engaging piece 152 from the bracket 91 and is screwed into the metal fitting 17. For this reason, the gap 101 between the upper frame body 11 and the upper frame 51 is arranged with the outdoor engaging piece 151 and indoor engaging piece 152 of the cover material 15, the hanging piece 13, metal fittings 17, and screws 171, and the metal hanging piece 13, metal fittings 17, and screws 171 are arranged between the outdoor engaging piece 151 and indoor engaging piece 152, and further arranged through a space without being in close contact with the outdoor engaging piece 151 and indoor engaging piece 152.

[0022] [Installation of cover material] To attach the cover material 15 to the upper frame body 11, the cover material 15 is pressed toward the upper frame body 11 while aligning the engagement portion 1521 of the indoor-side engagement piece 152 with the indoor-side engagement groove 14. This causes the engagement portion 1521 to be inserted into the indoor-side engagement groove 14, and the engagement protrusion 1511 of the outdoor-side engagement piece 151 to abut against the protruding piece 133. Because the tip of the engagement protrusion 1511 is curved in an arc, when it abuts against the protruding piece 133, the outdoor-side engagement piece 151 bends toward the outside of the room, and the engagement protrusion 1511 is inserted into the groove opening 121. Then, the bent outdoor-side engagement piece 151 returns to its original position, and the engagement protrusion 1511 is engaged with the engagement groove 122. In this way, the cover material 15 is attached to the upper frame body 11. The distance between the hook portion 141 and the protrusion 142 is greater than the thickness dimension in the projection direction of the engagement portion 1521, so that the engagement portion 1521, which has a generally L-shaped cross section, can be inserted. Furthermore, the width dimension in the projection direction of the exterior engagement groove 12 is greater than the dimension in the projection direction of the engagement protrusion 1511. Therefore, the longitudinal movement of the cover material 15 relative to the upper frame main body 11 is not restricted, and this movement is restricted by fixing the mounting piece portion 154 to the frame with screws. Therefore, in case of thermal shrinkage of the cover material 15, the protrusions 142 at the left and right end positions of the cover material 15 may be crimped to fix both left and right ends of the engagement portion 1521. As described above, the cover material 15 can be attached from below the upper frame body 11, and can be attached not only in advance at a factory, but also after the door frame 2 has been attached to the main body at the construction site and the door body 5 has been attached to the door frame 2. Furthermore, if the cover material 15 is damaged after the door 1 is installed, the cover material 15 can be removed from the upper frame body 11 and a new cover material 15 can be installed.

[0023] [Vertical frame body] As described above, the vertical frames 30, 40 comprise the vertical frame main bodies 31, 41 and the cover materials 35, 45. The vertical frames 30, 40 are bilaterally symmetrical and have the same shape, so only the vertical frame 30 on the hanging side will be described below. 6 and 7, the vertical frame body 31 comprises a body piece 311 provided along the front-view direction, an exterior appearance piece 312 extending from the body piece 311 in the front-view direction, an interior appearance piece 313 extending from the body piece 311 in the front-view direction and provided on the interior side of the room than the exterior appearance piece 312, an appearance piece 314 connecting the exterior appearance piece 312 and the interior appearance piece 313, and an attachment piece 315 fixed to the building frame. Therefore, the vertical frame body 31 comprises a hollow portion defined by the body piece 311, the exterior appearance piece 312, the interior appearance piece 313, and the appearance piece 314. The projection piece 314 has a projection surface 3141 that faces the vertical frame 73 of the door body 5.

[0024] The vertical frame body 31 has a first engaging groove portion 321, a second engaging groove portion 322, and a third engaging groove portion 323 as engaging groove portions to which the cover material 35 is attached. The first engagement groove 321 is a groove that is formed by an L-shaped bent portion at the end of the interior viewing piece 313 on the main body piece 311 side and that opens to the interior side. The second engagement groove 322 is formed by a protruding piece portion that protrudes in an L-shape from the middle position in the viewing direction of the interior viewing piece portion 313, and is a groove portion that opens to the inner periphery side, that is, the door main body 5 side. Third engagement groove 323 is formed at the indoor end of main body piece 311, i.e., closer to the interior than indoor sight piece 313. Third engagement groove 323 includes hook portion 3231 that extends inward in the sight direction from main body piece 311 and has a protrusion at its tip that protrudes toward the interior of the room, and protrusion 3232 that extends inward in the sight direction from a position on main body piece 311 that is closer to the interior than hook portion 3231. The first engagement groove 321, the second engagement groove 322, and the third engagement groove 323 are provided in positions in the projection direction between the main body piece 311 and the projection piece 314, that is, closer to the outer periphery of the vertical frame 30, i.e., closer to the frame body, than the projection surface 3141 of the projection piece 314 that faces the door main body 5. For this reason, the engagement grooves 321 to 323 are not provided in positions that overlap the gap 103 between the projection piece 314 and the vertical stile 73 in the projection direction.

[0025] [Vertical frame covering material] The cover material 35 includes an engagement piece portion 36 attached to the engagement groove portion, a cover main body 37 provided at a position overlapping the gap 103 in the projection direction, and an attachment piece portion 351 attached to a body not shown. The cover body 37 has a substantially hollow shape, and a holding piece portion 371 for holding the airtight material 39 is formed on the outdoor side of the cover body 37 .

[0026] The engagement piece 36 includes a first engagement piece 361 that engages with the first engagement groove 321, a second engagement piece 362 that engages with the second engagement groove 322, and a third engagement piece 363 that engages with the third engagement groove 323. The first engagement piece 361 extends from the outer peripheral surface of the cover body 37 toward the body piece 311 (the outer peripheral side in the viewing direction), and further extends toward the exterior of the room, forming a generally L-shaped cross section. The tip of the first engagement piece 361 is engaged with the first engagement groove 321. The second engagement piece 362 is a protrusion that extends from the exterior surface of the cover body 37 toward the main body piece 311 (the outer periphery in the viewing direction). The second engagement piece 362 is engaged with the second engagement groove 322. The third engagement piece 363 extends from the outer peripheral surface of the cover body 37 toward the main body piece 311 (the outer peripheral side in the viewing direction), and its tip extends to the outside of the room and further toward the main body piece 311, forming a generally L-shaped cross section. The third engagement piece 363 is engaged with the third engagement groove 323. As shown in FIG. 7, the second engaging groove portion 322 and the third engaging groove portion 323 are formed only in the height range in which the cover materials 35, 45 are arranged.

[0027] The vertical frame 40 is composed of a vertical frame body 41 having the same configuration as the vertical frame body 31 and a cover material 45 having the same configuration as the cover material 35, so explanation will be omitted. A hinge 55 is fixed with screws to the vertical frame body 31 and the vertical stile 53. A lock receiver (not shown) into which a latch bolt or deadbolt is inserted is attached to the vertical frame body 41.

[0028] [Installation of cover material] To attach the cover material 35 to the vertical frame body 31, the first engagement piece 361 is placed between the second engagement groove 322 and the body piece 311, and the third engagement piece 363 is aligned with the third engagement groove 323, and the cover material 35 is pressed against the vertical frame body 31. At this time, the tip of the first engagement piece 361 abuts against the indoor viewing piece 313 and slides while bending toward the outside of the room. Then, when the third engagement piece 363 is inserted into the third engagement groove 323 and the first engagement piece 361 moves to the position of the first engagement groove 321, the first engagement piece 361, which had been bent by contacting the interior viewing piece 313, returns to its original position and engages with the first engagement groove 321. The second engagement piece 362 also engages with the second engagement groove 322. In this way, the cover material 35 is attached to the vertical frame body 31. If necessary, the protrusions 3232 at the upper and lower ends of the cover material 35 can be crimped to secure the upper and lower ends of the third engagement piece 363. This prevents thermal shrinkage of the synthetic resin cover material 35. The cover material 45 can be attached to the vertical frame body 41 using the same procedure as the cover material 35. As described above, the cover materials 35, 45 can be attached from the inner surface side of the vertical frame main body 31, 41, and can be attached not only in advance at the factory, but also after the door frame 2 has been attached to the main body at the construction site and the door main body 5 has been attached to the door frame 2. Furthermore, even if the cover materials 35, 45 are damaged after the door 1 is installed, the cover materials 35, 45 can be removed from the vertical frame bodies 31, 41 and new cover materials 35, 45 can be installed.

[0029] [Connecting structure of upper frame and vertical frame] As shown in Figure 7, main body piece 311 of vertical frame 30 protrudes upward beyond exterior facing piece 312, interior facing piece 313, and recessed piece 314. As shown in Figure 5, vertical frame 40 has a similar configuration. With sealing materials 38, 48 attached to this upwardly protruding main body piece 311, the left and right ends of upper frame main body 11 are abutted against it, and screws are screwed from vertical frame main bodies 31, 41 into the screw holes in upper frame main body 11, whereby upper frame main body 11 and vertical frame main bodies 31, 41 are connected with sealing materials 38, 48 sandwiched between them. In addition, as shown in Figure 5, sponges 18 are placed on the upper surfaces of the cover materials 35, 45 of the vertical frames 30, 40 and on the undersides of both left and right ends of the cover material 15, improving the water-tightness between each cover material 35, 45 and the cover material 15. The left and right ends of the cover material 15 protrude further to the left and right than the ends of the airtight material 19, and these protruding portions are located in the hollow portions of the vertical frames 30, 40, i.e., on the indoor side of the exterior appearance piece 312. The upper ends of the mounting piece portions 351 of the cover materials 35, 45 protrude above the cover body 37 and abut against the underside of the mounting piece portion 154 of the cover material 15.

[0030] [Effects of the first embodiment] According to the door 1 of the first embodiment, the engagement grooves for attaching the cover materials 35, 45 in the vertical frame bodies 31, 41 are positioned closer to the outer periphery of the vertical frames 30, 40 than the projection surface 3141 of the vertical frame bodies 31, 41. The cover materials 35, 45 are not positioned in the gaps 103, 104 between the projection surface 3141 and the door body 5. Instead, only the cover bodies 37 of the synthetic resin cover materials 35, 45 are positioned in the gaps 103, 104. This reduces changes in the surface temperature of the cover materials 35, 45 and improves thermal insulation compared to when engagement pieces of an aluminum vertical frame are positioned in the gaps 103, 104 and resin members are attached to these engagement pieces. This reduces the decrease in the surface temperature of the cover materials 35, 45 facing the indoor space, even in winter when the outdoor temperature drops, and also reduces the occurrence of condensation. Furthermore, the cover materials 35, 45 can be attached to and detached from the vertical frame bodies 31, 41 by moving them left and right, that is, in the plane of the door frame 2, so the cover materials 35, 45 can be attached and detached even when the door frame 2 is attached to the frame body or when the door body 5 is attached to the door frame 2. Therefore, even when the cover materials 35, 45 need to be replaced, they can be easily attached and detached, improving maintainability.

[0031] The vertical frame bodies 31, 41 have a hollow section defined by the body piece 311, the exterior sight piece 312, the interior sight piece 313, and the sight piece 314, which improves the strength of the vertical frame bodies 31, 41. Furthermore, the interior sight piece 313 is provided with the first engagement groove 321 and the second engagement groove 322, which eliminates the need to form separate protrusions for these engagement grooves on the vertical frame bodies 31, 41, and the interior sight piece 313 can fulfill the functions of forming the hollow section and providing the engagement grooves, thereby simplifying the structure of the vertical frame bodies 31, 41 and reducing costs.

[0032] The vertical frame main body 31, 41 is provided with three engaging grooves, a first engaging groove 321, a second engaging groove 322, and a third engaging groove 323, and the cover material 35, 45 is provided with three engaging pieces, a first engaging piece 361, a second engaging piece 362, and a third engaging piece 363, which engage with the respective engaging grooves 321 to 323, so the cover material 35, 45 can be attached to the vertical frame main body 31, 41 at three locations. This makes it possible to restrict the cover material 35, 45 not only in the projection direction and the facing direction, but also in the direction of rotation, and the attachment strength of the cover material 35, 45 can also be improved. In particular, if the second engaging groove portion 322 and the second engaging piece portion 362 are not provided, the dimensions from the airtight material 39 against which the door body 5 abuts to the first engaging groove portion 321 and the third engaging groove portion 323 are large, making it easier for the cover materials 35, 45 to rotate toward the interior of the room and increasing the amount of deformation of the cover materials 35, 45. However, in this embodiment, the second engaging groove portion 322 is formed so that its position in the viewing direction is closer to the airtight materials 39, 49 than the first engaging groove portion 321 and the third engaging groove portion 323, and the second engaging piece portion 362 of the cover materials 35, 45 is engaged with it, thereby reducing the amount of deformation of the cover materials 35, 45.

[0033] The third engagement piece 363 can be engaged by being inserted between the hook portion 3231 of the third engagement groove 323 and the protruding piece 3232. Therefore, the third engagement piece 363 can be fixed by crimping the protruding piece 3232, and thermal shrinkage of the synthetic resin cover materials 35, 45 can be suppressed.

[0034] The cover body 37 has a hollow portion, which improves its strength. Therefore, the cover body 37, which is provided at a position overlapping the gaps 103, 104 between the visible surfaces 3141 of the vertical frame bodies 31, 41 and the door body 5 in the visible direction, can sufficiently withstand the force applied via the airtight materials 39, 49 when the door body 5 is closed, even without providing a metal reinforcing material or the like.

[0035] [Second embodiment] As shown in FIGS. 8 and 9, the door 1B of the second embodiment is a terrace door that uses a door body 5B in which double glazing 59B is incorporated over the entire surface. The door 1B includes a door frame 2 and a door body 5B. The door frame 2 has the same configuration as in the first embodiment, so it is given the same reference numeral and the description thereof will be omitted. The door body 5B is formed by assembling an upper frame 51B, a lower frame 52B, a vertical frame 53B, and a vertical frame 54B into a rectangular frame shape, and incorporating a double-glazed glass 59B inside the frame. The door 1B of the second embodiment also uses the door frame 2 having the same structure as that of the first embodiment, and therefore can achieve the same effects as those of the first embodiment.

[0036] [Variations] The present invention is not limited to the doors 1 and 1B of the above-described embodiments, but can also be applied to flush doors in which glass is not incorporated into the door body and a surface material such as a steel plate is attached. The engagement grooves formed in the vertical frame bodies 31, 41 are not limited to those formed in the interior facing piece 313 that constitutes the hollow portion of the vertical frame bodies 31, 41. For example, a protruding piece that protrudes in the facing direction from the body piece 311 may be formed, and an engagement groove may be provided on this protruding piece. In this case, the dimensions of the protruding piece should be set so that it does not protrude beyond the visible surface 3141. In addition, in the above embodiment, three engagement groove portions 321 to 323 are provided on the vertical frame main body 31, 41, and three engagement piece portions 361 to 363 are provided on the cover material 35, 45, but the number of engagement groove portions and engagement piece portions may be two or four, as long as the structure allows the cover material 35, 45 to be attached and detached to the vertical frame main body 31, 41 from the in-plane direction of the door frame 2. Furthermore, the cover body 37 of the cover material 35, 45 is not limited to one having a hollow portion, but may be one having a holding piece portion 371 that holds the airtight material 39.

[0037] [Summary of the invention] The door of the present invention comprises a door frame having a vertical frame and a door body arranged within the door frame, the vertical frame comprising an aluminum vertical frame body and a synthetic resin cover material, the vertical frame body having a projection surface facing the door body and an engagement groove portion to which the cover material is attached, the engagement groove portion being positioned closer to the outer periphery of the vertical frame than the projection surface in the projection direction, and the cover material having an engagement piece portion attached to the engagement groove portion and a cover body arranged in a position overlapping in the projection direction with the gap between the projection surface and the door body. According to the present invention, the engagement groove for attaching the cover material is positioned closer to the outer periphery of the vertical frame body than the front surface of the vertical frame body, and is not placed in the gap between the front surface and the door body. Only the cover body of the synthetic resin cover material is placed in the gap. This reduces the change in the surface temperature of the cover material, improving thermal insulation compared to placing an engagement piece of an aluminum vertical frame in the gap and attaching a resin member to this engagement piece. This prevents the surface temperature of the cover material facing the indoor space from dropping, even in winter when the outside temperature drops, and also reduces the occurrence of condensation. Furthermore, the cover can be attached and detached to the vertical frame body by moving it left and right, i.e., in the plane of the door frame, so the cover can be attached and detached even when the door frame is attached to the main body or the door body is attached to the door frame. Therefore, even if the cover needs to be replaced, it can be easily attached and detached, improving maintainability.

[0038] In the door of the present invention, the vertical frame main body comprises a main body piece portion arranged along the front direction, an exterior front piece portion extending from the main body piece portion in the front direction, an interior front piece portion extending from the main body piece portion in the front direction and arranged inside the room rather than the exterior front piece portion, and a front piece portion connecting the exterior front piece portion and the interior front piece portion, and it is preferable that the front piece portion has the front surface and the interior front piece portion has the engaging groove portion. According to the present invention, the hollow portion can be formed in the vertical frame body using the main body piece, exterior facing piece, interior facing piece, and facing piece, thereby improving the strength of the vertical frame body. Also, since the interior facing piece has an engagement groove, there is no need to form a separate protrusion for the engagement groove on the vertical frame body. The function of forming the hollow portion and the function of providing the engagement groove can be realized by the interior facing piece, so the structure of the vertical frame body can be simplified and costs can be reduced.

[0039] In the door of the present invention, the interior sight piece is provided with a first engagement groove opening to the interior side and a second engagement groove opening to the inner periphery side, and a third engagement groove is formed in the main body piece on the interior side of the interior sight piece. It is preferable that the engagement piece of the cover material includes a first engagement piece that engages with the first engagement groove, a second engagement piece that engages with the second engagement groove, and a third engagement piece that engages with the third engagement groove. According to the present invention, the vertical frame body is provided with three engaging grooves, and the cover material has three engaging pieces that engage with these three engaging grooves, so the cover material can be attached to the vertical frame body at three points. This allows the cover material to be restricted not only in the projection direction and the facing direction, but also in the rotational direction, and improves the attachment strength of the cover material.

[0040] In the door of the present invention, it is preferable that the third engagement groove portion comprises a hook portion extending from the main body piece portion toward the inner circumference in the viewing direction and having a protrusion at its tip that protrudes toward the interior of the room, and a protruding piece extending from a position on the main body piece portion that is closer to the interior than the hook portion toward the inner circumference in the viewing direction. According to the present invention, the third engagement piece can be engaged by being inserted between the hook portion of the third engagement groove and the protruding piece, and therefore, by crimping the protruding piece, the third engagement piece can be fixed and thermal shrinkage of the synthetic resin cover material can be suppressed.

[0041] In the door of the present invention, it is preferable that the cover body has a hollow portion and a holding piece portion formed on the indoor side of the hollow portion to hold the airtight material. According to the present invention, the cover body has a hollow portion, which improves its strength. Therefore, the cover body, which is provided in a position overlapping the gap between the visible surface of the vertical frame body and the door body in the visible direction, can sufficiently withstand the force applied through the airtight material when the door body is closed, even without providing a metal reinforcing material or the like. [Explanation of symbols]

[0042] 1...door, 1B...door, 2...door frame, 5...door body, 5B...door body, 30...vertical frame, 31...vertical frame body, 35...cover material, 36...engagement piece portion, 37...cover body, 39...airtight material, 40...vertical frame, 41...vertical frame body, 45...cover material, 49...airtight material, 57...airtight material, 58...airtight material, 103...gap, 104...gap, 311...body piece portion, 312...chamber Exterior appearance piece, 313...interior appearance piece, 314...visible piece, 315...mounting piece, 321...first engaging groove, 322...second engaging groove, 323...third engaging groove, 351...mounting piece, 361...first engaging piece, 362...second engaging piece, 363...third engaging piece, 371...holding piece, 3141...visible surface, 3231...hook portion, 3232...protruding piece.

Claims

1. a door frame having a vertical frame; a door body disposed within the door frame, The vertical frame includes an aluminum vertical frame body and a synthetic resin cover material, The vertical frame body is a visible surface facing the door body; an engagement groove portion to which the cover material is attached, The engagement groove portion is provided such that the position in the view direction is closer to the outer periphery of the vertical frame than the view surface, The cover material is an engagement piece attached to the engagement groove; The door cover is provided at a position overlapping the gap between the front surface and the door body in the front direction. The vertical frame body is A main body piece provided along the projection direction; an exterior appearance piece extending from the main body piece in a viewing direction; an indoor spotting piece extending from the main body piece in a spotting direction and provided on the indoor side of the outdoor spotting piece; a projection piece that connects the exterior projection piece and the interior projection piece; The projection piece portion is provided with the projection surface, The interior viewing piece is provided with a first engagement groove portion that opens to the interior side, which is the engagement groove portion, and a second engagement groove portion that opens to the inner peripheral side, The main body piece has a third engagement groove formed on the interior side of the interior viewing piece, The engaging piece portion of the cover material includes a first engaging piece portion that engages with the first engaging groove portion, a second engaging piece portion that engages with the second engaging groove portion, and a third engaging piece portion that engages with the third engaging groove portion. A door characterized by

2. The door of claim 1, The third engagement groove portion is a hook portion extending from the main body piece toward the inner periphery in the viewing direction and having a protrusion at its tip that protrudes toward the interior of the vehicle; The main body piece has a protruding piece extending from a position on the indoor side of the hook portion toward the inner circumferential side in the viewing direction. A door characterized by

3. The door according to claim 1 or 2, The cover body has a hollow portion and a holding piece portion formed on the outdoor side of the hollow portion to hold the airtight material. A door characterized by

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