JP7790992B2 - Building materials - Google Patents

Description

The present invention relates to building materials equipped with ventilation units.

Patent Document 1 discloses a building fixture with a ventilation window (ventilation unit) in a door body, in which the frame material that serves as both the bottom frame of the ventilation unit and the bottom stile of the door body is made of a composite structure of aluminum and resin.

Patent No. 6431327

A composite frame material like the one described above can achieve both thermal insulation performance and strength. However, in the configuration described in Patent Document 1, there is a connection between the aluminum material and the resin material directly below the lower edge of the ventilation shoji screen. As a result, with this configuration, there is a concern that rainwater, etc. that flows down along the ventilation shoji screen may seep into the frame material through the connection, causing water leakage from unintended locations.

The present invention was made in consideration of the problems with the prior art described above, and aims to provide building materials that can ensure high waterproofing performance even while using composite frame materials.

One aspect of the present invention is a fixture comprising a door body and a ventilation unit attached to the door body. The ventilation unit includes a ventilation opening frame having a metal frame and a non-metal frame attached to the metal frame, and a ventilation shoji screen supported by the ventilation opening frame. The metal frame is positioned below the ventilation shoji screen and has a metal lower frame that covers the lower end of the ventilation shoji screen.

The above-described aspects of the present invention ensure high waterproofing performance even when using composite frame materials.

FIG. 1 is a view of a fitting according to one embodiment as seen from the outside of the room. FIG. FIG. This is an enlarged vertical cross-sectional view of the upper frame of the door body and the upper frame of the ventilation opening frame and their surrounding area. This is an enlarged vertical cross-sectional view of the bottom frame of the door body and the bottom frame of the ventilation opening frame, as well as their surrounding areas. This is an enlarged oblique view of the small end face and surrounding area of the upper frame of the door body and the upper frame of the ventilation opening frame. 6B is a perspective view showing the state in which the vertical frame and vertical stile are connected to the upper frame and upper stile shown in FIG. 6A. This is an enlarged oblique view of the small end face and surrounding area of the bottom frame of the door body and the bottom frame of the ventilation opening frame. 7B is a perspective view showing the state in which the vertical frame and vertical stile are connected to the lower frame and bottom frame shown in FIG. 7A. This is an enlarged cross-sectional view of the door frame, door sill, and surrounding area when the door body is in the fully closed position. 8B is a cross-sectional view showing a state in which the door body is in a fully open position from the state shown in FIG. 8A.

Below, we will present a preferred embodiment of the building fixtures according to the present invention and explain them in detail with reference to the accompanying drawings.

As shown in Figure 1, the fitting 10 according to one embodiment comprises an opening frame 12 that is fixed to an opening formed in the building frame, and a door body 14 that is slidably supported by the opening frame 12. The fitting 10 is used, for example, as an entrance door.

In this application, the "visible direction" refers to the depth direction of the fixture 10 (the direction indicated by arrow Z in the figure), and the "visible surface" refers to a surface extending along the visible direction. The "visible direction" refers to a direction perpendicular to the visible direction. In the case of a vertical frame 12c or the like that is long in the vertical direction, this refers to the left-right direction (the direction indicated by arrow X in the figure) that is perpendicular to the longitudinal direction. In the case of an upper frame 12a or the like that is long in the horizontal direction, this refers to the up-down direction (the direction indicated by arrow Y in the figure) that is perpendicular to the longitudinal direction. The "visible surface" refers to a surface along the visible direction. The "inside of the frame" refers to the inner portion of a frame-shaped member such as an opening frame 12. The "outside of the frame" refers to the outer peripheral portion of the frame-shaped member such as an opening frame 12 that is fixed to the building frame. The "inside-of-frame direction" refers to the direction from the outside of the frame of a frame-shaped member such as an opening frame 12 toward the inside of the frame. The "outside-of-frame direction" refers to the direction from the inside of the frame of a frame-shaped member such as an opening frame 12 toward the outside of the frame.

As shown in Figures 1 to 3, the opening frame 12 is a framework consisting of an upper frame 12a, a lower frame 12b, a vertical frame 12c, and a mullion 12d. Each of the frames 12a to 12c is an extruded member made of an aluminum alloy or the like. A resin attachment member 16 made of polyvinyl chloride resin (PVC) or the like is attached to the interior side of the frame's inner visible surface.

The mullion 12d is an extruded section made of aluminum alloy or the like, with a mullion attachment member 17 made of resin, such as PVC, attached to one section. The mullion 12d has a chamfered portion 20 formed by cutting out the outdoor corner of its frame-interior visible surface 12d1. The chamfered portion 20 forms a retracting space for the door end stile 22c of the door body 14 and the pull-tab component 60 attached to it. In this embodiment, the chamfered portion 20 is, for example, a recess formed by cutting out a corner at a right angle. The mullion attachment member 17 has a roughly crank-shaped cross section and covers the frame-interior visible surface 12d1 and the inner surfaces 20a, 20b of the chamfered portion 20.

As shown in Figures 1 to 3, the door body 14 is a single-sliding door supported by the opening frame 12 and slides in the X direction inside the frame. The door body 14 has a ventilation unit 21 and a frame 22.

First, the frame body 22 is a frame assembly consisting of an upper frame 22a, a lower frame 22b, a door end frame 22c, and a joint frame 22d. The frame body 22 has a composite structure combining a metal frame material 23 made of an extruded material such as an aluminum alloy, and a resin frame material 24 made of an extruded material such as PVC. The metal frame material 23 has a metal upper frame 23a, a metal lower frame 23b, a metal door end frame 23c, and a metal joint frame 23d. The resin frame material 24 has a resin upper frame 24a, a resin lower frame 24b, and a resin door end frame 24c.

The upper frame 22a is made by attaching a resin upper frame 24a to the interior facing surface of a metal upper frame 23a. The lower frame 22b is made by attaching a resin lower frame 24b to the interior facing surface of a metal lower frame 23b. The front frame 22c is made by attaching a resin front frame 24c to the interior facing surface of a metal front frame 23c. The joint frame 22d is made by attaching a metal joint frame 23d.

As shown in Figure 2, the door body 14 slides by guides 25 provided on the outer frame surface of the upper frame 22a being guided by rails 26a on the upper frame 12a, and door rollers 27 provided on the outer frame surface of the lower frame 22b rolling on rails 26b on the lower frame 12b.

Next, as shown in Figures 2 and 3, the ventilation unit 21 is a ventilation window that allows air to circulate between the inside and outside of the room when the door body 14 is closed. In this embodiment, a casement window is used as the ventilation unit 21. The ventilation unit 21 has a ventilation opening frame 28, an outer shoji screen 29, an inner shoji screen 30, and a screen door device 31.

The ventilation opening frame 28 is made up of an upper frame 28a, a lower frame 28b, and left and right vertical frames 28c, 28d. The ventilation opening frame 28 has a composite structure combining a metal frame material 33 made of an extruded material such as an aluminum alloy and a resin frame material 34 made of an extruded material such as PVC. The metal frame material 33 has an upper metal frame 33a, a lower metal frame 33b, and vertical metal frames 33c, 33d. The resin frame material 34 has an upper resin frame 34a, a lower resin frame 34b, and vertical resin frames 34c, 34d.

The upper frame 28a has a resin upper frame 34a attached to the inner frame surface of the metal upper frame 33a. The lower frame 28b has a resin lower frame 34b attached to the inner frame surface and the interior facing surface of the metal lower frame 33b. The vertical frames 28c and 28d have resin vertical frames 34c and 34d attached to the inner frame surface and the interior facing surface of the metal vertical frames 33c and 33d, respectively.

Opening grooves 35a, 35b are aligned in the projection direction on the inner frame surfaces of the vertical frames 28c, 28d, respectively. The ventilation unit 21 of this embodiment includes two shoji screens 29, 30 aligned in the indoor/outdoor direction. The side ends of the shoji screens 29, 30 are inserted into the opening grooves 35a, 35b, respectively, allowing them to move up and down. The resin vertical frames 34c, 34d are arranged to cover the interior-facing surface of the exterior-side opening groove 35a. Therefore, the vertical frames 28c, 28d each include a resin vertical frame attachment member 36 made of PVC or similar that covers the interior-facing surface of the interior-side opening groove 35b. As a result, the interior-facing surface of the vertical frames 28c, 28d is essentially formed by the vertical frame attachment member 36.

The outer shoji screen 29 and the inner shoji screen 30 are ventilation shoji screens. The outer shoji screen 29 has a face material 38 supported on all four sides by ventilation frames 39. The inner shoji screen 30 has a face material 40 supported on all four sides by ventilation frames 41. The face materials 38 and 40 are double-glazed glass, for example, with two sheets of glass arranged side by side with a spacer between them. The ventilation frames 39 and 41 have a composite structure that combines a metal frame made of an extruded material such as an aluminum alloy with a resin frame made of an extruded material such as PVC.

The screen door device 31 is installed to cover the shoji screens 29, 30 from the outside of the room. The screen door device 31 has a screen door frame 31a fixed to the exterior facing surface of the ventilation opening frame 28, and a screen door 31b supported by the screen door frame 31a. The screen door 31b is, for example, a roll-up type that can be raised and lowered. The screen door device 31 may be omitted.

Next, we will explain the specific configuration and effects of each part of the fitting 10. First, we will explain the connection structure between the frame 22 and the ventilation opening frame 28.

Generally, in fittings equipped with ventilation units, the door frame and ventilation opening frame of the ventilation unit are made of the same material. In contrast, in the fitting 10 of this embodiment, the frame 22 and ventilation opening frame 28 are made of separate materials, and the ventilation opening frame 28 is connected to the frame 22.

As shown in Figure 4, the upper frame 22a has an upper connecting portion 44a on the inner frame visible surface 22a1 of the metal upper frame 23a. The upper connecting portion 44a is located in a hidden position on the indoor side of the outdoor visible surface 22a2 of the upper frame 22a. The upper connecting portion 44a is composed of, for example, a pair of L-shaped plate pieces. In this embodiment, one of the plate pieces that make up the upper connecting portion 44a is provided on the back side of the outdoor visible surface 22a2.

The upper frame 28a is connected to the upper stile 22a by engaging the engagement piece 44b on the indoor end of the metal upper frame 33a with the upper connecting piece 44a. The metal upper frame 33a has a drain surface 33a1 that slopes downward toward the outdoor side, and a hollow portion 33a2 provided on the back side of the drain surface 33a1. The engagement piece 44b is formed where the indoor end of the drain surface 33a1 is bent upward. The metal upper frame 33a has an attachment portion 45a in a portion hidden inside the frame of the hollow portion 33a2. The plastic upper frame 34a is connected to the metal upper frame 33a by engaging the engagement piece 45b on the outdoor end with the attachment portion 45a.

As shown in Figure 4, the upper frame 28a is arranged to protrude from the exterior facing surface 22a2 of the upper frame 22a to the exterior. In this case, only the boundary between the exterior facing surface 22a2 and the drip edge 33a1 of the upper frame 22a and the upper frame 28a is exposed to the exterior of the building fixture 10, so the appearance quality is not compromised. Furthermore, while the upper frame 22a and the upper frame 28a are both composite structures of metal and resin, their exterior surfaces are composed of the continuous metal upper frame 23a and metal upper frame 33a. Therefore, the connection between the upper frame 22a and the upper frame 28a has high rigidity and fire resistance.

Furthermore, the upper connecting portion 44a and engaging piece 44b of the fitting 10 are hidden behind the exterior-facing surface 22a2 of the metal upper frame 23a. This prevents the upper frame 22a and upper frame 28a from disengaging at the upper connecting portion 44a, even when exposed to heat from a fire, for example, from the exterior. Moreover, because the upper connecting portion 44a and engaging piece 44b are located above the drainage surface 33a1, waterproofing is also enhanced. Furthermore, because the attachment portion 48a of the resin upper frame 34a to the metal upper frame 33a is located on the interior-facing surface of the metal upper frame 33a, the fitting 10 also prevents the resin upper frame 34a from falling off the metal upper frame 33a in the event of a fire. In particular, because the attachment portion 48a is hidden inside the hollow portion 33a2 provided in the metal upper frame 33a, the insulating effect of the hollow portion 33a2 further improves fire resistance.

Next, as shown in Figure 6A, the overall length (length in the X direction) of the upper frame 28a is shorter than the overall length (length in the X direction) of the upper stile 22a. As a result, a step L is formed between the fore-end face 22a3 of the upper stile 22a and the fore-end face 28a1 of the upper frame 28a due to the difference in their overall lengths. In other words, the fore-end face 28a1 of the upper frame 28a is offset inward from the fore-end face 22a3 of the upper stile 22a. Note that while Figures 6A and 6B only show one end of the upper stile 22a and upper frame 28a, the other end is also roughly symmetrical.

That is, the fitting 10 is equipped with a ventilation unit 21. For this reason, as shown in Figures 3 and 6B, the fitting 10 has a ventilation opening frame 28 that protrudes from the inside of the frame of the stile 22 to the outside of the room. For this reason, the above-mentioned step L is necessary between the end faces 22a3, 28a1 of the upper stile 22a and the upper frame 28a. Therefore, the door end stile 22c and the joint stile 22d, which are vertical stiles, are screwed to the end faces 22a3, 28a1, straddling the step L and covering these end faces 22a3, 28a1.

In this way, the upper frame 22a, which is a horizontal stile, and the upper frame 28a, which is a horizontal frame, are connected using separate members, forming a step L between their respective fore-end faces 22a3, 28a1. This eliminates the need for post-processing of the fore-end face 28a1 of the fitting 10 to form the step L. In other words, with the typical fittings described above, the door frame and the ventilation opening frame of the ventilation unit are constructed from a single member, requiring additional processing to form the step L. In contrast, the fitting 10 of this embodiment does not require additional processing for the step L, resulting in high manufacturing efficiency. While the resin upper frame 34a is not shown in Figures 6A and 6B, the overall length of the resin upper frame 34a is the same as the overall length of the metal upper frame 33a, and its fore-end face is also flush with the fore-end face 28a1.

Next, we will explain the connection structure between the lower frame 22b and the lower frame 28b, and the waterproof structure provided by the lower frame 28b.

As shown in Figure 5, the bottom frame 22b has a lower connecting portion 48a at the top of the exterior facing surface 22b1 of the metal bottom frame 23b. The lower connecting portion 48a is composed, for example, of an L-shaped plate piece and a recess facing each other. The bottom frame 28b has an engagement piece 48b on the interior facing surface 28b1 that overlaps with the exterior facing surface 22b1 of the bottom frame 22b. The engagement piece 48b engages with the lower connecting portion 48a, connecting the bottom frame 28b to the bottom frame 22b.

The metal lower frame 33b has, in order from the indoor side to the outdoor side, a receiving surface 33b1, a gutter-shaped portion 33b2, and a drip surface 33b3. The receiving surface 33b1 is an inclined surface that slopes downward toward the outdoor side. The gutter-shaped portion 33b2 protrudes downward on the outdoor side of the receiving surface 33b1 and forms a groove shape. The drip surface 33b3 is an inclined surface that slopes downward toward the outdoor side on the outdoor side of the gutter-shaped portion 33b2. The engagement piece 48b is provided on the indoor facing surface 28b1 of the gutter-shaped portion 33b2, which faces the outdoor facing surface 22b1 of the lower frame 22b.

The receiving surface 33b1 and the gutter-shaped portion 33b2 face the lower end 30a of the inner shoji screen 30, i.e., the lower frame of the ventilation frame 41, and cover it in the forward direction. Specifically, the indoor end of the receiving surface 33b1 is located closer to the indoor side than the indoor surface of the inner shoji screen 30, and the outdoor end of the gutter-shaped portion 33b2 is located closer to the outdoor side than the outdoor surface of the inner shoji screen 30. Of course, the receiving surface 33b1 and the gutter-shaped portion 33b2 also cover the lower end 30a of the inner shoji screen 30 in the longitudinal direction. In this case, the gutter-shaped portion 33ba1 is located on the outdoor side of the outdoor-side visible surface 22b1 of the lower frame 22b, and overlaps with the upper part of the outdoor-side visible surface 22b1. In this case, the receiving surface 33b1 and the gutter-shaped portion 33b2, including the drip edge surface 33b3, are composed of a single shaped member.

The lower frame 28b is also configured to protrude from the exterior facing surface 22b1 of the lower stile 22b to the exterior. The lower frame 28b has a receiving surface 33b1 and a gutter-shaped portion 33b2 on the metal lower frame 33b, which cover the lower end 30a of the inner shoji screen 30. Therefore, in the fitting 10, rainwater, condensation, etc. that flows down the interior and exterior surfaces of the inner shoji screen 30 is trapped by the metal receiving surface 33b1 and the gutter-shaped portion 33b2 and appropriately drained to the exterior, as described below. As a result, the fitting 10 achieves high waterproofing performance. Furthermore, because the gutter-shaped portion 33b2 overlaps with the exterior facing surface 22b1 of the lower stile 22b and protrudes downward, the volume of the gutter-shaped portion 33b2 is expanded, improving water storage capacity and drainage.

The fixture 10 of this embodiment is provided with a communication opening 50 that penetrates the indoor-facing surface 28b1 of the gutter-shaped portion 33b2 and the outdoor-facing surface 22b1 of the stile 22b, allowing water to flow from the gutter-shaped portion 33b2 into the stile 22b. Therefore, water flowing from the receiving surface 33b1 to the gutter-shaped portion 33b2 passes through the communication opening 50 while flowing through the gutter-shaped portion 33b2. Water that passes through the communication opening 50 flows down the metal stile 23b and is discharged to the outside, for example, through a drainage element 51 provided on the outdoor-facing surface 22b1. The communication opening 50 penetrates the lower connecting portion 48a between the stile 22b and the lower frame 28b. Therefore, waterproofing around the communication opening 50 can be easily achieved, for example, by providing a waterproofing material at the connection between the lower connecting portion 48a and the engaging piece 48b.

The drainage path from the gutter-shaped portion 33b2 is not limited to this. For example, a drain outlet may be provided directly on the outdoor-facing surface of the gutter-shaped portion 33b2, as shown by the two-dot chain line in Figure 5, as in drain component 51. Also, for example, a path may be provided that drains water flowing down inside the metal bottom frame 23b to the outdoor side through the lower end surface of the metal bottom frame 23b, as shown in Figure 5 as drain outlet 52.

As shown in Figure 5, the resin lower frame 34b has a sight piece 34b1 and a sight piece 34b2, and is formed with a generally L-shaped cross section. The sight piece 34b1 covers the interior sight surface of the protruding piece 33b4 that protrudes upward from the interior end of the metal lower frame 33b. The sight piece 34b2 protrudes to the exterior so as to cover the frame-exterior sight surface of the receiving surface 33b1. The upper end of the sight piece 34b1 and the tip of the sight piece 34b2 engage with the metal lower frame 33b, thereby attaching the resin lower frame 34b to the metal lower frame 33b. This allows the resin lower frame 34b to reliably cover the portion of the metal lower frame 33b that is exposed to the interior, further improving the appearance quality and insulation performance.

Next, as shown in Figure 7A, the overall length (length in the X direction) of the lower frame 28b is also configured to be shorter than the overall length (length in the X direction) of the lower stile 22b. As a result, a step L is formed between the fore-end face 22b2 of the lower stile 22b and the fore-end face 28b2 of the lower frame 28b due to the difference in their respective overall lengths. Note that while Figures 7A and 7B only show one end of the lower stile 22b and lower frame 28b, the other end has a substantially symmetrical structure.

In this way, the bottom frame 22b, which is a horizontal stile, and the bottom frame 28b, which is a horizontal frame, are connected using separate members, with a step L formed between their respective end faces 22b2, 28b2. Therefore, the fitting 10 does not require additional processing to form the step L on the end face 28a2 of the bottom frame 28b (see Figure 7B), further improving manufacturing efficiency. Furthermore, because the bottom frame 22b and the bottom frame 28b are separate members, the metal bottom frame 33b can be formed into the desired receptacle shape regardless of the shape of the bottom frame 22b, further improving waterproofing performance.

Next, we will explain the relationship between the door body 14 and the upright 12d.

As shown in Figure 8A, when the door body 14 is in the fully closed position, the mullion 12d fits into the stile 22d (metal stile 23d), with the smoke guards 54, 55 facing each other in the indoor/outdoor directions. In this case, the chamfered portion 20 of the mullion 12d forms a recess 56 between it and the indoor surface of the door body 14. The recess 56 is a concave space that opens toward the inside of the opening frame 12.

The recess 56 is surrounded on three sides by a first inner surface 56a facing the outside of the room, a second inner surface 56b facing the inside of the frame, and a third inner surface 56c facing the inside of the room. The first inner surface 56a is formed by the portion of the surface of the upright attachment member 17 that covers the inner surface 20a, which is the outside-facing surface of the chamfered portion 20. The second inner surface 56b is formed by the portion of the surface of the upright attachment member 17 that covers the inner surface 20b, which is the inside-facing surface of the chamfered portion 20. The third inner surface 56c is formed by the indoor-facing surface of the vertical frame attachment member 36 attached to the vertical frame 28d of the ventilation unit 21.

As a result, when the recess 56 of the fitting 10 is viewed from the inside of the room, as shown by arrow A in Figure 8A, the metal fitting stile 23d, which is a metal member, is hardly exposed. In other words, the recess 56 has almost the entire inner surface 56a-56c formed from the attachment members 17, 36, which are resin members. This provides the fitting 10 with high thermal insulation performance and a high-quality appearance.

The frame 22 is a composite structure of metal frame material 23 and resin frame material 24, and the opening frame 12, including the mullions 12d, has a similar structure. Resin material is easy to color and can be made in a color according to the user's preference, but it is not easy to change the color of metal material.

To ensure the appearance quality of the fitting 10, a laminate film 58 (shown by dashed lines in Figure 8A) of the same color as the surrounding resin material is attached to the exposed surface of the metal joint frame 23d, for example. In the case of the metal joint frame 23d, the laminate film 58 covers, for example, the frame exterior visible surface 23d1 and the outdoor visible surface 23d2.

On the other hand, the surfaces of the metal frame 23d that are hidden by the resin attachment members 17, 36 and not exposed to the outside, specifically the frame inner visible surface 23d3 and the room inner visible surface 23d4, do not have laminate film 58 attached. In other words, because the surfaces 23d3, 23d4 of the metal frame 23d are hidden by the resin attachment members 17, 36, there is no need to provide laminate film 58. As a result, the surface area of the laminate film 58 attached to the fitting 10 can be minimized, reducing labor and parts costs.

In the fitting 10 of this embodiment, the frame-inside portion 23d5 of the metal joint frame 23d is exposed in the recess 56 (see Figure 8A). However, because this frame-inside portion 23d5 is only slightly exposed from the gap between the inner surfaces 56b and 56c, the provision of the laminate film 58 has almost no effect on the appearance quality. Furthermore, when the fitting 10 is in the fully closed position shown in Figure 8A, the frame-inside visible surface 23d3 (and frame-inside portion 23d5) of the joint frame 22d is positioned offset to the outside of the frame from the frame-inside visible surface 17a of the mullion attachment member 17 and the frame-inside visible surface 12d1 of the mullion 12d. In other words, the joint frame 22d has a smaller visible width than the mullion 12d. As a result, the fitting 10 can reduce the amount of protrusion of the metal joint frame 23d into the recess 56, further reducing exposure of the metal joint frame 23d in the recess 56.

Of course, a laminate film 58 may be provided on the frame inner portion 23d5. Alternatively, for example, the visible width of the metal joint frame 23d may be reduced toward the outside of the frame, completely preventing the frame inner portion 23d5 from being exposed in the recess 56.

As shown in Figure 8B, in the fitting 10 of this embodiment, the recess 56 opens to the inside of the frame. Therefore, when the door body 14 is in the fully open position, the fitting 10 can maximize the opening amount of the door body 14 while avoiding the door stile 22c and the pull part 60 attached to it interfering with the upright 12d (upright attachment member 17). In other words, by forming the inner surfaces 56a-56c of the recess 56 from a resin material, the fitting 10 can be configured so that the recess 56 opens to the inside of the opening frame 12, thereby ensuring the opening amount of the door body 14.

As shown in Figures 8A and 8B, the upright attachment member 17 has a pocket portion 63 into which a tensioning material 62 is attached, which abuts against the interior surface of the door body 14. The pocket portion 63 is positioned away from the inner surfaces 56a to 56c of the recess 56, specifically in a position hidden outside the frame of the second inner surface 56b. This prevents the tensioning material 62 from interfering with the pull part 60 and also improves the appearance quality of the recess 56.

One aspect of the present invention is a fitting comprising a door body and a ventilation unit attached to the door body. The ventilation unit comprises a ventilation opening frame having a metal frame and a non-metal frame attached to the metal frame, and a ventilation shoji screen supported by the ventilation opening frame. The metal frame has a metal lower frame positioned below the ventilation shoji screen and covering the lower end of the ventilation shoji screen. With this configuration, while the ventilation opening frame of the ventilation unit has a composite structure of metal and non-metal frame materials, the connecting parts are not positioned below the ventilation shoji screen, and the lower end of the ventilation shoji screen is covered only by the metal frame material, ensuring high waterproof performance.

The door body has a frame that surrounds the ventilation opening frame on all four sides, and the frame has a lower frame that is made of a separate member from the metal lower frame, and the metal lower frame can be configured to be connected to the lower frame. This allows the metal lower frame to be formed into the desired receptacle shape regardless of the shape of the lower frame, further improving waterproofing performance. Furthermore, because the metal lower frame is a separate member from the lower frame, a step for installing a vertical frame can be created between the end faces of the metal lower frame and the lower frame without additional processing, improving manufacturing efficiency.

The metal lower frame may be configured to have a gutter-shaped portion that protrudes downward and covers part of the exterior-facing surface of the lower frame. This increases the amount of water stored by the metal lower frame and further improves drainage.

Furthermore, the gutter-shaped portion may be configured with a communication port that penetrates the indoor-facing surface of the gutter-shaped portion and the outdoor-facing surface of the bottom frame, allowing water to flow from the gutter-shaped portion into the bottom frame. This further improves the drainage of rainwater and other water that flows through the gutter-shaped portion.

The lower frame may be configured to have a drain port that discharges water that has flowed in through the communication port to the outside. The metal lower frame may be configured to have a drain port that discharges water that flows through the gutter-shaped portion to the outside of the fixture. This allows water that has flowed into the lower frame from the gutter-shaped portion to be smoothly discharged.

The non-metallic frame material may be configured to have a non-metallic lower frame attached to the metal lower frame and covering part of the outer visible surface of the metal lower frame. This can further improve the appearance quality and thermal insulation performance.

The present invention is not limited to the above-described embodiments, and can of course be freely modified without departing from the spirit of the present invention.

In the above, a sliding door was used as an example of the door body 14, but the door body 14 may also be a retractable door, or may be fixed to the building frame, such as a fixed window. Furthermore, in the above, attachment members 16, 17, 36, resin frame member 24, and resin frame member 34 were used as examples of components attached to the interior side or frame of the metal components, but such non-metallic components may also be made of materials other than resin, such as wood.

Furthermore, the above example illustrates a structure in which the bottom frame 22b of the door body 14 and the bottom frame 28b of the ventilation opening frame 28 are constructed from separate members and connected together. However, the waterproof structure achieved by, for example, the receiving surface 33b1 and gutter-shaped portion 33b2 of the metal bottom frame 33b can also be applied to a structure in which the bottom frame 22b and bottom frame 28b are integrally formed from the same shaped member.

10 Door, 12 Opening frame, 14 Door body, 17 Mulliner attachment member, 20 Corner chamfer, 21 Ventilation unit, 22 Frame body, 23 Metal frame material, 24 Resin frame material, 28 Ventilation opening frame, 29 Outer shoji screen, 30 Inner shoji screen, 33 Metal frame material, 33b2 Gutter-shaped portion, 34 Resin frame material, 36 Vertical frame attachment member, 44a Upper connecting portion, 45a Mounting portion, 48a Lower connecting portion, 50 Communication opening, 56 Recessed portion, 58 Laminated film

Claims (7)

A fixture comprising a door body and a ventilation unit attached to the door body,
The ventilation unit comprises:
a ventilation opening frame having a metal frame material and a non-metal frame material attached to the metal frame material;
A ventilation shoji screen supported by the ventilation opening frame;
and
The metal frame material is arranged below the ventilation shoji screen and has a metal lower frame covering the lower end of the ventilation shoji screen,
The door body has a frame body surrounding the ventilation opening frame on all four sides,
The frame has a lower frame formed of a separate member from the metal lower frame,
The metal lower frame is connected to the lower stile,
The metal lower frame protrudes downward and covers a part of the exterior surface of the lower frame, and the part covering the part also has a gutter-shaped portion that can be used as a drainage path.
A fixture characterized by: The fitting according to claim 1 ,
The fixture further comprises a communication opening that penetrates the interior facing surface of the gutter-shaped portion and the exterior facing surface of the bottom frame, allowing water to flow from the gutter-shaped portion into the bottom frame. The fitting according to claim 2 ,
The lower frame has a drainage outlet for discharging water that has flowed in from the communication opening to the outside. A fixture comprising a door body and a ventilation unit attached to the door body,
The ventilation unit comprises:
a ventilation opening frame having a metal frame material and a non-metal frame material attached to the metal frame material;
A ventilation shoji screen supported by the ventilation opening frame;
and
The metal frame material is arranged below the ventilation shoji screen and has a metal lower frame covering the lower end of the ventilation shoji screen,
The door body has a frame body surrounding the ventilation opening frame on all four sides,
The frame has a lower frame formed of a separate member from the metal lower frame,
The metal lower frame is connected to the lower stile,
The metal lower frame has a gutter-shaped portion that protrudes downward and covers a part of the exterior surface of the lower frame,
The fixture further comprises a communication opening that penetrates the interior facing surface of the gutter-shaped portion and the exterior facing surface of the bottom frame, allowing water to flow from the gutter-shaped portion into the bottom frame. The fitting according to claim 4,
The lower frame has a drainage outlet for discharging water that has flowed in from the communication opening to the outside. The fitting according to any one of claims 1 to 5,
The metal lower frame has a lower frame drain port that discharges water flowing through the gutter-shaped portion to the outside of the fixture. The fitting according to any one of claims 1 to 6,
The non-metallic frame material is attached to the metal sill and has a non-metallic sill that covers a portion of the outer visible surface of the metal sill.