Ventilation frames and fittings
The ventilation frame integrates a metal frame with a resin cover to enhance holding strength and thermal insulation, addressing the weakness of resin components in existing designs by using continuous facing pieces and separate resin cover members for improved airtightness and ease of assembly.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- YKK AP INC
- Filing Date
- 2025-01-07
- Publication Date
- 2026-07-17
AI Technical Summary
Existing ventilation frames with composite metal and resin members face reduced holding strength of panel bodies due to resin components, compromising thermal insulation.
A ventilation frame design incorporating a metal frame body with resin cover member, featuring continuous exterior and interior facing pieces with retaining grooves, and a separate resin cover member to maintain thermal insulation while enhancing holding strength.
The design improves the holding strength of surface materials while maintaining thermal insulation, ensuring airtight and watertight performance, and facilitating easy assembly and filter replacement.
Smart Images
Figure 2026119655000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a ventilation frame and a fitting composed of a metal member and a resin member.
Background Art
[0002] Conventionally, as a fitting, there is known a sash having a ventilation device in which a ventilation path communicating between the inside and outside of a room is formed, and a filter body having a filter is provided on the indoor side surface of the device body that is the indoor side end of the ventilation path (see Patent Document 1). The sash is configured by arranging a shoji in a frame body so as to be slidable. The shoji is composed of a frame and a panel body (face material) housed in the frame. The ventilation device is a ventilation frame that constitutes the upper side of the frame. The device body of the ventilation device is composed of an indoor member disposed on the indoor side and an outdoor member engaged with the indoor member and installed on the outdoor side.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] By the way, generally, in a fitting provided with a composite frame composed of a metal member and a resin member disposed on the indoor side with respect to the metal member, the heat insulation property is improved by disposing the resin member on the indoor side.
[0005] Also, for example, in the ventilation device described in Patent Document 1, the indoor member constitutes an indoor finding piece portion that forms a part of a concave groove portion for holding a panel body. However, since the indoor finding piece portion is composed of a resin portion of the indoor member, there is a possibility that the holding strength of the panel body may be reduced as compared with the case where the indoor finding piece portion is composed of a metal portion.
[0006] The object of the present invention is to provide a ventilation frame and joinery that can improve the holding strength of the surface material while maintaining thermal insulation. [Means for solving the problem]
[0007] The ventilation frame of the present invention is a ventilation frame that constitutes a part of the frame body for a shoji screen having a frame body and a facing material, and comprises a metal frame body having an outdoor opening that opens on the outdoor side, an opening cover that is combined with the metal frame body and has an indoor opening that communicates with the outdoor opening, and a resin cover member that is combined with the metal frame body, wherein the metal frame body has an outdoor facing piece and an indoor facing piece that is positioned on the indoor side relative to the outdoor facing piece, and The structure has an exterior facing piece and an interior facing piece that is continuous with the interior facing piece, the exterior facing piece, the interior facing piece and the interior facing piece have retaining grooves for holding the facing material on the inner circumference side of the metal frame, the metal frame has a main body portion on the outer circumference side of the retaining grooves, the opening cover is provided on the main body portion of the metal frame from the interior side, and the resin cover member is provided covering the interior facing piece from the interior side. The joinery of the present invention comprises a frame and a shoji screen disposed within the frame, wherein the shoji screen comprises a frame and a facing material disposed within the frame, and the frame comprises the ventilation frame of the present invention described above, which allows ventilation on the exterior and interior sides. [Effects of the Invention]
[0008] According to the present invention, it is possible to provide a ventilation frame and joinery that can improve the holding strength of the surface material while maintaining thermal insulation. [Brief explanation of the drawing]
[0009] [Figure 1] A vertical cross-sectional view of a sliding window according to an embodiment of the present invention. [Figure 2] A cross-sectional view of a sliding window according to the above embodiment. [Figure 3] A perspective view of the ventilation frame in the sliding window according to the above embodiment. [Figure 4] A cross-sectional perspective view showing an enlarged view of the ventilation frame in Figure 3. [Figure 5] A close-up vertical cross-sectional view of the ventilation frame shown in Figure 3. [Figure 6] An explanatory diagram showing the opening and closing mechanism. [Figure 7] A perspective view of a modified example of the ventilation frame in the sliding window according to the above embodiment. [Figure 8] A cross-sectional perspective view of a modified ventilation frame according to Figure 7. [Figure 9] Cross-sectional view of a ventilation frame according to a modified example of Figure 7. [Modes for carrying out the invention]
[0010] [Structure of this embodiment] Embodiments of the present invention will be described below with reference to the drawings. Figures 1 and 2 show a sliding window 1 as a building fixture having a ventilation frame 6 according to this embodiment. This sliding window 1 is installed in an opening in the building structure and divides the exterior space from the interior space. In the following description, the longitudinal direction of the ventilation frame 6 is defined as the X-axis direction, the visible direction of the ventilation frame 6 is defined as the Y-axis direction, and the depth direction of the ventilation frame 6 is defined as the Z-axis direction. The X, Y, and Z axes are orthogonal to each other. Also, the left-right direction of the sliding window 1 is the X-axis direction, the up-down direction of the sliding window 1 is the Y-axis direction, and the depth direction (indoor-outdoor direction) of the sliding window 1 is the Z-axis direction.
[0011] In Figure 1, the sliding window 1 comprises a frame 2 (window frame) and an outer sash 4 and an inner sash 5 arranged within the frame 2 so as to be slidable in the X-axis direction. The frame 2 is constructed by framing an upper frame 21 along the X-axis, a lower frame 22 along the X-axis, one left or right vertical frame 23 along the Y-axis, and the other left or right vertical frame 24 along the Y-axis. The outdoor portion of the frame 2 is made of metal extruded profiles (aluminum extruded profiles in this embodiment), and the indoor portion of the frame 2 is made of resin extruded profiles. In this way, the frame 2 has an aluminum-resin composite structure, which improves heat insulation. The outer sliding door 4 and the inner sliding door 5 each comprise a frame body 3 and a facing material 41 disposed within the frame body 3. The frame body 3 comprises an upper frame 31 aligned with the X-axis direction, a lower frame 32 aligned with the X-axis direction, and left and right vertical frames 33 and 34 aligned with the Y-axis direction. The outer shoji screen 4 is constructed by assembling an upper frame 31, a lower frame 32, vertical frames 33 and 34, and a facing material 41. The outer shoji screen 4 is installed on the exterior side relative to the inner shoji screen 5. In the outer shoji screen 4, the vertical frame 33 is the door edge vertical frame, and the vertical frame 34 is the exterior meeting vertical frame. The upper frame 31, lower frame 32, and vertical frames 33 and 34 are made of aluminum-resin composite structure using aluminum extruded profiles and resin extruded profiles to improve heat insulation. The facing material 41 is formed from single-layer or double-layer glass panels, etc. The facing material 41 is held to the frame body 3 with a gasket 42 interposed therebetween. The interior shoji screen 5 is constructed by assembling an upper frame 31, a lower frame 32, vertical frames 33 and 34, and a facing material 41. The interior shoji screen 5 is installed on the interior side relative to the exterior shoji screen 4. In the interior shoji screen 5, the vertical frame 33 is the door edge vertical frame, and the vertical frame 34 is the interior meeting vertical frame. The upper frame 31, lower frame 32, and vertical frames 33 and 34 are made of aluminum extruded profiles and resin extruded profiles to create an aluminum-resin composite structure, improving heat insulation. The facing material 41 is made of single-layer or double-layer glass panels, etc. The facing material 41 is held to the frame body 3 with a gasket 42 interposed therebetween. In this embodiment, the upper frame 31 of the outer sliding door 4 is composed of a ventilation frame 6. The ventilation frame 6 constitutes a part of the outer sliding door 4, which includes a frame body 3 and a facing material 41. A rail 211 is formed on the exterior side of the upper frame 21. The rail 211 hangs downward in the inward direction (downward). The rail 211 engages with the ventilation frame 6 and guides the sliding of the outer sash 4. The sliding window 1 is equipped with an airtight seal 71 between the upper frame 31 and the rail 211. A groove 210 is formed on the interior side of the upper frame 21. The sliding window 1 is equipped with an airtight seal 72 between the upper frame 31 and the groove 210. The outer sash 4 is configured such that the indoor and outdoor sides are at equal pressure.
[0012] [Ventilation frame configuration] Figures 3 to 5 show the ventilation frame 6 in the sliding window 1 according to this embodiment. (A) in Fig. 3 is a perspective view of the ventilation frame 6 as seen from the outdoor side, and (B) in Fig. 3 is a perspective view of the ventilation frame 6 as seen from the indoor side. The ventilation frame 6 includes a metal frame body 60, a resin cover member 63, an opening cover 64, and an opening / closing member 65. The metal frame body 60 includes a metal rail member 61 and a metal frame member 62, and these two members are engaged to form it. The metal frame body 60 is formed of an aluminum extruded profile. Each of the metal rail member 61, the metal frame member 62, the resin cover member 63, the resin opening cover 64, and the opening / closing member 65 extends along the longitudinal direction of the ventilation frame 6 and is formed in a long shape. In this embodiment, the metal rail member 61 and the metal frame member 62 are made of aluminum. The ventilation frame 6 enables ventilation between the indoor side and the outdoor side.
[0013] The metal rail member 61 includes a finding piece portion 611 with an opening 610 (outdoor side opening) formed on the outdoor side, a prospective piece portion 612 (groove-forming prospective piece portion), and a rising portion 613. The finding piece portion 611, the prospective piece portion 612, and the rising portion 613 are formed continuously. The opening 610 is formed by a plurality of long holes 610A provided along the longitudinal direction of the ventilation frame 6. Each long hole 610A extends in the vertical direction. The finding piece portion 611 extends along the vertical direction (Y-axis direction), and the opening 610 is formed at the lower part. The prospective piece portion 612 branches from the finding piece portion 611 above the opening 610 and extends along the horizontal direction (Z-axis direction) toward the indoor side. The rising portion 613 extends from the indoor side end of the prospective piece portion 612 toward the outer peripheral direction (upward). The finding piece portion 611 and the rising portion 613 are arranged to face each other in the Z-axis direction. A fitting portion 611a into which an airtight material 71 installed between it and the upper frame 21 is fitted is formed at the outer peripheral direction side end of the finding piece portion 611. A protruding portion 611b (second protruding portion) that engages with the metal frame member 62 is formed at the inner peripheral direction (lower) end of the finding piece portion 611. A protruding portion 613a (third protruding portion) that engages with the metal frame member 62 is formed at the outer peripheral direction end of the rising portion 613. This metal rail member 61 forms a fitting groove 614 that fits onto the rail 211 of the upper frame 21 and the like, with a finding piece 611 from the end in the outer peripheral direction to the position where the prospective piece 612 branches, a prospective piece 612, and a rising part 613. The airtight material 71 is installed on the rail 211 of the upper frame 21 and fitted into the fitting part 611a. The airtight material 71 abuts against the fitting part 611a, which is the end on the outer peripheral direction side of the finding piece 611. Thereby, the gap between the upper frame 21 and the ventilation frame 6 is filled with the airtight material 71, improving the airtight performance and watertight performance.
[0014] The metal frame member 62 includes an outdoor finding piece 621, a lower prospective piece 622, an indoor finding piece 623, an upper finding piece 624 (outer peripheral side finding piece), and an upper prospective piece 625 (outer peripheral side prospective piece). The outdoor finding piece 621 extends along the vertical direction (Y-axis direction) on the outdoor side. The outdoor finding piece 621 extends in the inner peripheral direction to the position where it holds the facing material 41 via the gasket 42. The lower prospective piece 622 extends along the horizontal direction (Z-axis direction) from the end on the outer peripheral direction side (upper side) of the outdoor finding piece 621 toward the indoor side. The indoor finding piece 623 extends from the indoor side end of the lower prospective piece 622 toward the inner peripheral direction side (lower side). The indoor finding piece 623 is arranged on the indoor side with respect to the outdoor finding piece 62l. The lower prospective piece 622 is continuous with the outdoor finding piece 621 and the indoor finding piece 623. The upper finding piece 624 branches from the middle of the lower prospective piece 622 on the outdoor side of the indoor finding piece 623 and extends in the outer peripheral direction along the vertical direction. The upper finding piece 624 is arranged on the indoor side of the rising part 613 and on the outdoor side of the indoor side end of the lower prospective piece 622 when the metal rail member 61 is engaged with the metal frame member 62. The upper prospective piece 625 extends fromthe end on the outer peripheral direction side of the upper finding piece 624 toward the indoor side along the horizontal direction. A space 100 is formed by the lower prospective piece 622 on the indoor side from the upper finding piece 624, the upper finding piece 624, and the upper prospective piece 625. A ventilation opening 620 (intermediate opening) is formed in the upper visible portion 624. The ventilation opening 620 is formed by a plurality of elongated holes 620A provided along the longitudinal direction of the ventilation frame 6. Each elongated hole 620A extends in the vertical direction. The ventilation opening 620 is formed in a space continuous with the opening 610. A groove 621a (first groove) is formed at the outer peripheral end of the outdoor-side facing piece 621, which engages with the projection 611b of the metal rail member 61. A support portion 622a is formed at the indoor end of the lower facing piece 622, which extends outward and supports the opening cover 64. The support portion 622a is formed in the continuous portion between the lower facing piece 622 and the indoor-side facing piece 623. The support portion 622a protrudes outward. A groove 623a (groove-forming portion) is formed at the outer peripheral end of the indoor-side facing piece 623, which protrudes inward and engages with the resin cover member 63. The groove 623a is formed in the continuous portion between the lower facing piece 622 and the indoor-side facing piece 623. The groove 623a is formed, for example, in an L-shape. The support portion 622a and the groove portion 623a form an engagement groove 67 for engaging the resin cover member 63. A retaining groove 626 is formed by the outdoor facing piece 621, the lower projection piece 622, and the indoor facing piece 623 to hold the face material 41 and the gasket 42. The face material 41 and the gasket 42 are held by the inner circumferential end of the outdoor facing piece 621 and the inner circumferential end of the indoor facing piece 623. The outdoor facing piece 621, the lower projection piece 622, and the indoor facing piece 623 form the retaining groove 626 on the inner circumferential side of the metal frame 60. The main body portion of the metal frame 60 is located on the outer circumferential side of the retaining groove 626. The interior-side facing piece 623 extends inward to a position that holds the face material 41 via the gasket 42. The inward-facing end of the interior-side facing piece 623 faces the exterior-side facing piece 621 and is positioned inward from the inward-facing end of the exterior-side facing piece 621 by the thickness of the resin cover member 63. A groove 625c is formed at the interior end of the upper projection piece 625, which engages with the upper part of the opening cover 64. The groove 625c engages with the opening cover 64 from the outer peripheral side. A cushioning material 73 is also installed in the groove 625c, and the opening cover 64 is installed via this cushioning material 73. The interior end of the upper projection piece 625, which is made of metal, abuts against the airtight seal 72 of the upper frame 21. Therefore, compared to, for example, a case where the upper projection piece 625, which is made of resin, abuts against the airtight seal 72, deformation of the upper projection piece 625 is less likely to occur, and the contact state between the upper projection piece 625 and the airtight seal 72 can be suitably maintained, thereby improving airtight and watertight performance. The metal frame member 62 further comprises a holding portion 627 and an engaging portion 628 (second groove). The holding portion 627 is formed on the outdoor side of the outer peripheral end of the upper projection portion 625. The holding portion 627 has a groove 625a formed therein for holding the upper part of the opening / closing member 65. The engaging portion 628 is formed on the outdoor side of the holding portion 627. The engaging portion 628 has a groove formed therein that engages with the protruding portion 613a of the rising portion 613. The engaging portion 628 is positioned on the outer peripheral side of the protruding portion 613a and engages with the protruding portion 613a from the outer peripheral side. An airtight seal 72 is placed between the interior surface constituting the groove 625c and the groove 210 of the upper frame 21. The airtight seal 72 abuts against the interior surface constituting the groove 625c, which is the interior end of the upper projection piece 625. As a result, the gap between the upper frame 21 and the ventilation frame 6 is filled with the airtight seal 72, improving the airtight and watertight performance. A hollow section 66 (first hollow section) is formed by the metal rail member 61, from the visible piece 612 to the inner circumferential visible piece 611, the visible piece 612, the rising portion 613, the upper visible piece 624 of the metal frame member 62, the lower visible piece 622 on the outdoor side, the upper visible piece 624, the holding portion 627, and the engaging portion 628. This hollow section 66 is configured to allow air from the outdoor side and air from the indoor side to pass through the opening 610 and the ventilation opening 620. Furthermore, the ventilation opening 620 is positioned at a different height from the opening 610. For example, the ventilation opening 620 is formed on the upper part of the upper visible piece 624. The ventilation opening 620 is formed at a higher position than the opening 610. Specifically, with the metal rail member 61 assembled to the metal frame member 62, the lower edge of the ventilation opening 620 is formed to be higher than the upper edge of the opening 610. In this way, even if water such as rainwater enters the hollow part 66 from the opening 610, the height difference between the ventilation opening 620 and the interior makes it difficult for water to enter the interior through the ventilation opening 620. Therefore, it is difficult for water such as rainwater to enter the interior, improving watertightness. The metal frame 60 has its main body portion located on the outer periphery side of the retaining groove 626.
[0015] The resin cover member 63 is formed from a resin extruded profile and constitutes the resin portion of the ventilation frame 6 that is on the indoor side of the metal portion. The resin cover member 63 is installed to cover the indoor side facing piece 623 from the indoor side. The resin cover member 63 comprises an upper cover portion 631, a first cover portion 632a, a second cover portion 632b, and a lower cover portion 633. The first cover portion 632a extends vertically along the indoor side facing piece 623. The second cover portion 632b is on the indoor side of the first cover portion 632a and extends vertically along the indoor side facing piece 623. The second cover portion 632b faces the first cover portion 632a with a gap in between. The upper cover portion 631 extends from the outer peripheral end of the second cover portion 632b to the outer peripheral end of the first cover portion 632a. The lower cover portion 633 extends from the inner circumferential end of the second cover portion 632b to the inner circumferential end of the first cover portion 632a. The lower cover portion 633 faces the upper cover portion 631 across the gap. Due to this gap, a hollow portion 630 is formed in the resin cover member 63 by the upper cover portion 631, the first cover portion 632a, the second cover portion 632b, and the lower cover portion 633. A projection 631a (first projection) is formed at the outdoor-facing end of the upper cover portion 631, which is the outer-circumferential side of the first cover portion 632a, to engage with the engagement groove 67 (first groove portion). The projection 631a engages with the engagement groove 67 from the outer-circumferential side of the engagement groove 67. The projection 631a inclins in the inner-circumferential direction as it approaches the outdoor side. The projection 631a abuts against the engagement groove 67. The length of the projection 631a in the depth direction (Z-axis direction) is formed to be greater than the length of the engagement groove 67 in the depth direction. Here, the length of the engagement groove 67 in the depth direction is the length from the position of the indoor-facing surface of the support portion 622a to the position of the indoor-facing surface of the groove portion 623a. In this way, the upper part of the first cover portion 632a can be positioned with a gap 69 between it and the indoor-facing depth piece. An engagement groove 68 (first engagement portion) is formed at the outdoor end of the lower cover portion 633, which is on the inward circumferential side of the first cover portion 632a, and engages with the inward circumferential end of the indoor facing piece portion 623. Specifically, the lower cover portion 633 extends outward from the inward circumferential end of the indoor facing piece portion 623 along the Z-axis direction. A projection 634 is formed at the outdoor end of the lower cover portion 633, which extends outward from the inward circumferential end of the indoor facing piece portion 623. The lower part of the first cover portion 632a, the lower cover portion 633 on the outdoor side from the first cover portion 632a, and the projection 634 form an engagement groove 68 that engages with the inward circumferential end of the indoor facing piece portion 623. The engagement groove 68 engages with the inner circumferential end of the inner circumferential end of the indoor-side facing piece 623 from the inner circumferential side. Furthermore, the resin cover member 63 is further provided with a restricting portion 635 that protrudes toward the indoor-facing piece 623 near the inner circumferential end of the first cover portion 632a. The restricting portion 635 abuts against the indoor-facing piece 623. Therefore, the lower part of the first cover portion 632a is positioned with a gap 69 between it and the indoor-facing piece 623. Furthermore, the resin cover member 63 is arranged continuously with the opening cover 64, with a gap in between. Furthermore, the resin cover member 63 is constructed separately from the opening cover 64.
[0016] The opening cover 64 comprises a filter cover 641 and a filter 642. The filter cover 641 is formed, for example, from a resin extruded profile. The filter cover 641 comprises a cover portion 641a in which the opening 640 (indoor-side opening) is formed, and fixing portions 641b and 641c for fixing the filter 642. The opening 640 is formed by a plurality of elongated holes 640A provided along the longitudinal direction of the ventilation frame 6. The opening 640 communicates with the opening 610. Each elongated hole 640A extends in the vertical direction. The opening 640 is formed in a space continuous with the ventilation opening 620. The opening cover 64 is positioned between the indoor-side end of the upper projection piece 625 and the indoor-side end of the lower projection piece 622. The opening cover 64 is positioned so as to form a gap between the opening 640 and the ventilation opening 620. The opening cover 64 is combined with a metal frame member 62. The opening cover 64 is installed on the outer periphery of the metal frame 60 from the interior side. The fixing portion 641b extends from the upper part of the cover portion 641a toward the outside. The fixing portion 641c extends from the lower part of the cover portion 641a toward the outside. A projection 641d that fits into the groove portion 625c is formed at the upper end of the cover portion 641a. A groove portion 641e that fits into the support portion 622a is formed at the lower end of the cover portion 641a. The cover portion 641a is positioned between the groove portion 625c and the support portion 622a. The opening cover 64 is supported by the support portion 622a. The protrusion 641d is positioned on the inner circumferential side of the groove 625c. The filter 642 is for capturing dust and other particles in the airflow passing through the ventilation frame 6. It is made of a nonwoven fabric, felt, cotton, or similar material and extends along the longitudinal direction of the ventilation frame 6. The filter 642 is positioned between the fixing parts 641b and 641c. The filter 642 is also positioned in the space 100. Furthermore, when replacing the filter, the filter cover 641 is removed, the filter 642 is pulled out, the new filter 642 is installed in the fixing parts 641b and 641c, and the filter cover 641 is fitted into the metal frame member 62. Although filter 642 is equipped with wires extending in its longitudinal direction, filters without such wires can also be used.
[0017] The shape and arrangement of the opening / closing member 65 will be explained using Figures 5 and 6. Figure 6 shows details of the opening / closing member 65. Figure 6(A) is a perspective view of the opening / closing member 65. Figure 6(B) is a front view of the opening / closing member 65 seen from the front (X-axis direction). Figure 6(C) is a side view of the opening / closing member 65 seen from the side (Z-axis direction, the side where the opening cover 64 is installed). In Figure 5, the opening / closing member 65 is positioned in the hollow portion 66, and a circular cross-section fitting portion 651 that fits into the groove portion 625a is formed on its upper edge, and the fitting portion 651 is configured to be rotatable about its axis. In Figure 5, the opening / closing member 65 is equipped with an operating knob 652. The operating knob 652 is attached to the upper visible piece 624 and connected to the opening / closing member 65 by an interlocking mechanism (not shown). The opening / closing member 65 moves from the closed position shown by the solid line in Figure 5 to the open position shown by the dashed line in Figure 5 by operating the operating knob 652. In the closed position, the opening / closing member 65 closes the ventilation opening 620. In the open position, the opening / closing member 65 opens the ventilation opening 620. The ventilation frame 6 is switched between a ventilated state and a non-ventilated state by opening and closing the ventilation opening 620 with this opening / closing member 65. By opening the opening / closing member 65, a ventilation path is formed in which air passes from the outside to the inside, as shown by the arrow in Figure 5, through the opening 610, the hollow section 66, the ventilation opening 620, the space 100, and the opening 640. The ventilation opening 620 is formed between the opening 610 and the opening 640. The upper visible piece 624 divides the hollow portion 66 communicating with the opening 610 and the hollow space 100 (second hollow portion) communicating with the opening 640 within the metal frame 60. In Figure 6, the opening / closing member 65 comprises a flat plate portion 653 and a watertight material 654. The flat plate portion 653 is formed in a flat shape and extends inward in the direction along the Y-axis from the fitting portion 651. The watertight material 654 is attached to the surface of the flat plate portion 653 facing the upper visible piece portion 624 (the right side of the flat plate portion 653 in Figure 5) when the opening / closing member 65 is installed on the ventilation frame 6. The watertight material 654 is composed of a first edge member 654a and a second edge member 654b. The first edge member 654a and the second edge member 654b are each formed in a rectangular shape and may be made of a resin material such as rubber. The first edge member 654a extends along the Y-axis and is positioned at both ends of the flat plate portion 653 in the X-axis direction. The second edge member 654b extends along the X-axis and is positioned at the inner end (lower end) of the flat plate portion 653. The watertight material 654 is positioned by the first edge member 654a and the second edge member 654b such that the flat plate portion 653 borders the surface facing the upper visible piece portion 624, except for the edge where the fitting portion 651 is located. In this way, the watertight material 654 is positioned in the gap between the opening / closing member 65 and the upper visible piece 624 when the opening / closing member 65 is closed. Therefore, the watertight material 654 can close the gap between the upper visible piece and the flat plate 653. Thus, when the opening / closing member 65 is closed, the ventilation opening 620 is closed by the watertight material 654, preventing water such as rainwater from entering the ventilation opening 620 from the outside, and potentially improving watertightness.
[0018] According to the embodiment described above, the panel 41 is fitted into the space formed by the exterior facing piece 621, the lower facing piece 622, and the interior facing piece 623, and is held in place by the metal exterior facing piece 621 and the metal interior facing piece 623. Therefore, the panel 41 can be held in place by the metal frame member 62 from both the exterior and interior sides. This structure improves strength compared to using a resin material for the interior facing piece 623. This ensures strength against wind pressure such as strong winds. This provides a ventilation frame 6 and a sliding window 1 that improve the holding strength of the panel while maintaining thermal insulation. Furthermore, the exterior facing piece 621 extends inward to a position that holds the face material 41 via the gasket 42. The interior facing piece 623 also extends inward to a position that holds the face material 41 via the gasket 42. As a result, the face material 41 is held by the inward-facing end of the metal exterior facing piece 621 and the inward-facing end of the metal interior facing piece 623. This can further improve the strength with which the face material 41 is held. Furthermore, the filter cover 641 and the resin cover member 63 are formed from resin extruded profiles. The filter cover 641 is positioned on the indoor side of the indoor-facing piece 623. The protruding portion 631a engages with the metal frame member 62 from the outer peripheral side in the engagement groove 67. The engagement groove 68 engages with the metal frame member 62 from the inner peripheral side of the inner peripheral end of the indoor-facing piece 623. This also helps to maintain heat insulation. Furthermore, the outer circumference of the filter cover 641 is supported by the protruding portion 631a, and the inner circumference is supported by the restricting portion 635, so that the first cover portion 632a is positioned with a gap 69 between it and the indoor-side facing piece 623. As a result, heat transfer is reduced, and thermal insulation can be improved. Furthermore, the second cover portion 632b faces the first cover portion 632a with a gap in between. The lower cover portion 633 faces the upper cover portion 631 with the same gap in between. As a result, a hollow portion 630 is formed in the resin cover member 63. Therefore, heat is further reduced, and the heat insulation performance can be improved. Furthermore, the airtight material 71 is installed on the rail 211 of the upper frame 21 and fitted into the fitting portion 611a. The airtight material 71 abuts against the fitting portion 611a, which is the outermost end of the visible piece 611. As a result, the gap between the upper frame 21 and the ventilation frame 6 is filled with the airtight material 71, improving the airtight and watertight performance. Furthermore, the airtight material 72 is positioned between the interior surface constituting the groove 625c and the groove 210 of the upper frame 21. The airtight material 72 abuts against the interior surface constituting the groove 625c, which is the interior end of the upper projection piece 625. As a result, the gap between the upper frame 21 and the ventilation frame 6 is filled with the airtight material 72, improving the airtight and watertight performance. Furthermore, the presence of airtight materials 71 and 72 improves airtightness and watertightness, making it difficult for air or water such as rainwater to pass between the upper frame 21 and the ventilation frame 6. Therefore, since air has difficulty passing between the upper frame 21 and the ventilation frame 6, it is ventilated to the inside and outside through the ventilation path shown by the arrows in Figure 5, passing through the ventilation opening 620 and filter 642. This further improves the dustproof performance of the ventilation frame 6. Furthermore, the upper visible piece 624 is positioned on the outside of the indoor visible piece 623. The upper projection piece 625 extends inward from the outermost end of the upper visible piece 624. Thus, a space 100 is formed by the upper visible piece 624, the indoor lower projection piece 622, the upper visible piece 624, and the upper projection piece 625. As a result, a gap is formed between the ventilation opening 620 and the opening 640, approximately the length of the upper projection piece 625, or the length from the upper visible piece 624 to the indoor lower projection piece 622. The filter 642 is placed in this gap, which is space 100. This means that the thickness of the filter 642 only needs to fit into the gap, and thicker filters than conventional ones can be used. Thus, dustproof performance can be improved. In addition, the presence of this gap makes it easier to remove and assemble the opening cover 64. Furthermore, the cover portion 641a is positioned between the groove portion 625c and the support portion 622a. Thus, the opening cover 64 is supported by the metal frame member 62. This provides a higher holding force than if the opening cover 64 were supported by a resin material. Furthermore, an engagement groove 67 is formed between the support portion 622a and the groove portion 623a to engage the resin cover member 63. This allows the resin cover member 63 to be engaged using the support portion 622a. Thus, an engagement groove 67 that engages can be formed without requiring a complex structure. Furthermore, since the opening cover 64 and the resin cover member 63 are constructed as separate parts, assembly is easy, and they can also be easily removed when replacing the filter. Furthermore, both the metal rail member 61 and the metal frame member 62 are made of metal. The engaging portion 628 is positioned on the outer-circumferential side of the protrusion 613a and engages with the protrusion 613a from the outer-circumferential side. The groove portion 625c is positioned on the outer-circumferential side of the protrusion 641d and engages with the protrusion 641d from the outer-circumferential side. Thus, the upper part of the ventilation frame 6 connected to the upper frame 21 is made of metal. This further improves the strength of the ventilation frame 6. Furthermore, the protruding portion 631a is inclined inward as it faces outward. This allows the opening cover 64 to be positioned tucked inside, making the gap between the opening cover 64 and the resin cover member 63 less noticeable. Additionally, the inclination allows it to grip the groove 623a, making it easier to engage with the engagement groove 67, thus improving the holding force compared to when it is not inclined. Furthermore, the ventilation opening 620 is formed at a higher position than the opening 610. With this configuration, even if water such as rainwater enters the hollow section 66 from the opening 610, the height difference between the ventilation opening 620 and the opening makes it difficult for water to enter the interior through the ventilation opening 620. Therefore, even if water such as rainwater enters from the opening 610, it is difficult for it to enter the ventilation opening 620, improving watertightness. Furthermore, the opening / closing member 65 comprises a flat plate portion 653 and a watertight material 654. The watertight material 654 is positioned so as to border the surface of the flat plate portion 653 that faces the upper visible piece portion 624, excluding the edge where the fitting portion 651 is located. In this way, the watertight material 654 is positioned in the gap between the opening / closing member 65 and the upper visible piece portion 624 when the opening / closing member 65 is closed. Therefore, the watertight material 654 can close the gap between the upper visible piece portion and the flat plate portion 653. Thus, when the opening / closing member 65 is closed, the ventilation opening 620 is closed by the watertight material 654, preventing water such as rainwater from entering the ventilation opening 620 from the outside, and potentially improving watertightness. Furthermore, by dividing the metal frame 60 into a metal rail member 61 and a metal frame member 62, it becomes easier to process and form parts such as the ventilation opening 620 during the manufacturing of the components. It also makes it easier to assemble the opening and closing members 65 and other components. In addition, since the metal frame 60 is constructed by assembling two metal parts, it is possible to maintain strength.
[0019] [Differentiation] In the above embodiment, the opening 610 is formed in the visible piece 611, but instead of or in addition to the opening 610, an opening 615 may be formed in the fitting groove 614, for example, as shown in the modified example in Figures 7 to 9. In the modified example in Figures 7 to 9, the opening 615 is formed from the visible piece 611 to the rising portion 613. The opening 615 is formed by a plurality of elongated holes 615A provided along the longitudinal direction of the ventilation frame 6. Each elongated hole 615A extends in the Z-axis direction and in the vertical direction. In this case, by opening the opening / closing member 65, as shown by the arrow in Figure 9, a ventilation path is formed through which air passes from the outside to the inside, through the opening 615, the hollow portion 66, the ventilation opening 620, the space 100, and the opening 640, from between the metal rail member 61 and the upper frame 21. Here, in the modified example shown in Figures 7 to 9, no opening is formed on the exterior surface of the ventilation frame 6. Therefore, water such as rainwater is less likely to enter from the outside, improving the watertightness of the ventilation frame 6. In addition, since the opening 615 is not visible from the outside, the appearance of the ventilation frame 6 from the outside can also be improved. Because the opening 615 is formed over a long distance from the visible piece 611 to the rising piece 613, the portion that is blocked when the opening / closing member 65 is in the open state is smaller than if the opening were formed only in the rising piece 613 or only in the visible piece 611, thus maintaining ventilation performance. The shape and arrangement of the opening 615 are not limited to those shown, and any arrangement that can form this ventilation path is acceptable. It may be formed only on the visible portion 611 or only on the rising portion 613, and the size of the opening 615 can also be changed as appropriate.
[0020] In the above embodiment, a fitting groove 614 is formed in the ventilation frame 6. However, the invention is not limited to this, and the fitting groove 614 may be omitted if the rail 211 is not fitted into the fitting groove 614. In the above embodiment, an opening / closing member 65 is provided, but the invention is not limited to this, and if it is not necessary to open the ventilation opening 620 with the opening / closing member 65, the configuration of the opening / closing member 65 may be omitted. In the above embodiment, the opening cover 64 is constructed with the filter cover 641 and the filter 642 as separate components. However, it is not limited to this configuration, and the filter cover 641 and the filter 642 may be constructed as an integrated unit. In this case, when replacing the filter, the components of the opening cover 64 may be replaced. In the above embodiment, the support portion 622a for supporting the resin opening cover 64 is formed on the metal frame member 62. However, the invention is not limited to this, and the support portion may be formed on the resin cover member 63 as long as it can adequately support the opening cover 64. In the above embodiment, the filter cover 641 was formed from a resin extruded profile, but it is not limited to this and may be formed from, for example, metal. In this case, the strength of the opening cover 64 and the upper part of the metal frame 60 can be improved. In the above embodiment, each elongated hole 640A was formed to extend in the vertical direction, but it is not limited to this, and may be formed in a shape that extends in the left-right direction (X-axis direction) of the sliding window 1, for example. In the above embodiment, the protruding portion 631a of the resin cover member 63 is formed at an inclination as described above, but it is not limited to this and may extend along the Z-axis direction without being inclined. In the above embodiment, the resin cover member 63 was configured separately from the opening cover 64, but it is not limited to this and may be formed integrally. In this case as well, the structure remains such that the facing material 41 can be held by the metal frame member 62 from both the outdoor and indoor sides, thus improving the holding strength of the facing material 41 while maintaining the heat insulation provided by the resin cover member 63. In the above embodiment, the sliding window 1 is structured such that the interior end of the upper projection piece 625 (outer projection piece) of the ventilation frame 6 abuts against the airtight material 72 attached to the upper frame 21. However, the structure is not limited to this, and the ventilation frame 6 may be configured such that the opening cover 64 abuts against the airtight material 72, provided that sufficient airtight or watertight performance can be obtained. In the above embodiment, the airtight material 71 is installed on the rail 211 of the upper frame 21 and fitted into the fitting portion 611a, but the structure is not limited to this, and a structure without the airtight material 71 is also possible. Since fitting the airtight material 71 into the fitting portion 611a can improve airtight and watertight performance, it is preferable that the sliding window 1 is provided with an airtight material 71 between the upper frame 31 and the rail 211. In the above embodiment, the sliding window 1 was used as a joinery piece equipped with a ventilation frame 6, but it is not limited to this, and other types of windows may also be used as joinery. Also, in the above embodiment, the ventilation frame 6 was installed on the outer sash 4, but it may also be applied to the inner sash 5. Also, in the above embodiment, the ventilation frame 6 was applied to the upper frame 31, but it may also be applied to other frames such as the vertical frames 33, 34, and the lower frame 32. In this case as well, it is possible to improve the holding strength of the facing material while maintaining thermal insulation. In the above embodiment, the metal frame 60 was composed of two members, a metal frame member 62 and a metal rail member 61. However, it is not limited to this, and may be formed integrally from one member, or it may be composed of two or more members. In the above embodiment, the metal frame member 62 is provided with a groove 621a and a groove-shaped engaging portion 628, and the metal rail member 61 is provided with protrusions 611b and 613a, thereby enabling engagement between the two members. However, the embodiment is not limited to this configuration, and any configuration in which the two members engage is acceptable. In the above embodiment, the facing material 41 was held to the frame 3 with a gasket 42 interposed therebetween, but the invention is not limited to this, and for example, an irregularly shaped sealing material may be used instead of the gasket 42. In this case as well, watertightness between the facing material 41 and the frame 3 can be maintained.
[0021] [Summary of the invention] (1) The ventilation frame of the present invention is a ventilation frame that constitutes a part of the frame body for a shoji screen having a frame body and a facing material, and comprises a metal frame body having an outdoor opening that opens on the outdoor side, an opening cover that is combined with the metal frame body and has an indoor opening that communicates with the outdoor opening, and a resin cover member that is combined with the metal frame body, wherein the metal frame body has an outdoor facing piece and an indoor facing piece that is arranged on the indoor side relative to the outdoor facing piece, The structure has an exterior facing portion and an interior facing portion that is continuous with the interior facing portion, the exterior facing portion, the interior facing portion and the interior facing portion each have a retaining groove for holding the facing material on the inner circumference side of the metal frame, the metal frame has a main body portion on the outer circumference side of the retaining groove, the opening cover is provided on the main body portion of the metal frame from the interior side, and the resin cover member is provided covering the interior facing portion from the interior side. According to the ventilation frame of the present invention, the facing material is held in place by a metal retaining groove. Furthermore, the ventilation frame is also constructed from a metal frame body in the portion on the outer periphery of the retaining groove. This improves the holding strength of the facing material. Furthermore, the resin cover component covers the interior side of the metal interior-side facing piece. This helps maintain thermal insulation. Therefore, it is possible to provide a ventilation frame that improves the holding strength of the facing material while maintaining thermal insulation. (2) In the ventilation frame of the present invention, the inner circumferential end of the indoor side facing piece and the inner circumferential end of the outdoor side facing piece may extend in the circumferential direction to a position that holds the facing material. With this configuration, the inner perimeter end of the indoor-side facing piece and the inner perimeter end of the outdoor-side facing piece hold the facing material. This further improves the holding strength of the facing material. (3) In the ventilation frame of the present invention, the metal frame body has a fitting groove in which a rail provided on the frame body on which the frame body is installed is arranged, and the outdoor opening may be formed in the fitting groove. This configuration eliminates the need to form an opening on the exterior side of the ventilation frame. Therefore, it is possible to create a configuration that makes it difficult for rainwater and other water to enter from the outside, thereby improving the watertightness of the ventilation frame. In addition, the opening can be made invisible from the outside, improving the appearance of the ventilation frame from the exterior side. (4) In the ventilation frame of the present invention, the metal frame body has an indoor opening and an intermediate opening positioned between the indoor opening, and an opening / closing member for opening and closing the intermediate opening is fitted into it, and the fitting groove has a visible piece on the outdoor side, a groove forming visible piece, and a rising piece on the indoor side formed in a continuous manner, and the outdoor opening may be formed from the visible piece to the rising piece. With this configuration, a long opening is formed from the visible section to the rising section. Therefore, compared to, for example, if the opening is formed only in the rising section or only in the visible section, there is less of a risk that the outdoor opening will be blocked when the opening / closing member is in the open state, thus maintaining ventilation performance. (5) In the ventilation frame of the present invention, the metal frame has an outer peripheral facing piece in which an intermediate opening is formed, which is located between the outdoor opening and the indoor opening, and the intermediate opening may be formed on the outer peripheral side of the outdoor opening. With this configuration, the intermediate opening is positioned above the interior opening. This means that even if rainwater or other water enters the interior opening from the outside, the height difference between the intermediate opening and the interior makes it difficult for water to enter the interior through the intermediate opening. As a result, it becomes more difficult for rainwater or other water to enter the interior, improving watertightness. (6) In the ventilation frame of the present invention, the metal frame body has an outer peripheral facing piece that forms an intermediate opening positioned between the outer exterior opening and the inner interior opening, and an opening / closing member for opening and closing the intermediate opening is fitted to the metal frame body, and the opening / closing member may be provided with a watertight material on the edge of the surface facing the outer peripheral facing piece. With this configuration, a watertight material is placed in the gap between the outer perimeter facing piece and the opening / closing member. Therefore, when the opening / closing member is closed, the watertight material is placed in the gap between the opening / closing member and the upper facing piece. Thus, when the opening / closing member is closed, the intermediate opening is closed by the watertight material, preventing water such as rainwater from entering the intermediate opening from the outside, and potentially improving watertightness. (7) In the ventilation frame of the present invention, the metal frame body comprises a metal rail member and a metal frame member combined with the metal rail member, the metal rail member has a fitting groove formed therein in which a rail provided on a frame body on which the frame body is installed is arranged, the fitting groove has a visible piece on the outdoor side, a groove forming visible piece and a rising piece on the indoor side formed in a continuous manner, the metal frame member has an outer peripheral visible piece in which an intermediate opening is formed to be arranged between the outdoor opening and the indoor opening, The product is composed of the exterior facing piece, the interior facing piece, and the projection piece, wherein a second projection extending in the circumferential direction is formed at the inner circumferential end of the facing piece, a third projection extending in the circumferential direction is formed at the outer circumferential end of the rising piece, a first groove for engaging the second projection from the inner circumferential side is formed at the outer circumferential end of the exterior facing piece, and a second groove for engaging the third projection from the outer circumferential side is formed at the outer circumferential end of the outer facing piece. With this configuration, by dividing the metal frame into a metal rail member and a metal frame member, it becomes easier to process and form parts such as intermediate openings during the manufacturing of the components. It also makes it easier to assemble opening and closing components. Furthermore, since the metal frame is constructed by assembling two metal parts, it can maintain its strength and withstand wind pressure such as strong winds. (8) In the ventilation frame of the present invention, the metal frame member further comprises an outer peripheral facing piece extending toward the interior from the outer peripheral facing piece on the outer peripheral side of the facing piece, the outer peripheral facing piece being positioned on the exterior side of the interior facing piece, and the opening cover being positioned between the interior end of the outer peripheral facing piece and the interior end of the facing piece, and may be positioned such that a hollow portion is formed between the interior opening and the intermediate opening. With this configuration, the outer-perimeter facing piece is positioned further outward than the indoor-side facing piece. The outer-perimeter projection piece extends inward from the outer-perimeter end of the outer-perimeter facing piece. Thus, a hollow space is formed between the outer-perimeter facing piece and the indoor projection piece, and between the outer-perimeter facing piece and the outer-perimeter projection piece. As a result, a gap is formed between the intermediate opening and the indoor-side opening that is approximately equal to the length of the outer-perimeter projection piece, or the length from the outer-perimeter facing piece to the indoor projection piece. The opening cover is placed in this gap. This means that the thickness of the opening cover only needs to fit into the gap, and thicker covers than conventional products can be used. Therefore, dustproof performance can be improved. In addition, the presence of this gap makes it easier to remove and assemble the opening cover. (9) In the ventilation frame of the present invention, a support portion projecting outward is formed in the continuous portion between the visible piece and the indoor-side visible piece, and the opening cover may be supported by the support portion. With this configuration, the opening cover is supported by a metal frame support. Therefore, the holding strength of the opening cover can be improved. (10) In the ventilation frame of the present invention, a groove forming portion is formed in the continuous portion between the visible piece and the indoor-side visible piece to form an engagement groove between it and the support portion, and a first projection portion that engages with the engagement groove is formed in the resin cover member. With this configuration, by providing a groove-forming portion, the resin cover member can be engaged using the support portion. Therefore, an engagement groove can be formed without requiring a complex structure. (11) In the ventilation frame of the present invention, the first projection may be inclined in the circumferential direction as it faces outwards. With this configuration, the resin cover member can be positioned so that it is recessed into the inner circumferential direction, making the engaging portion less visible from the interior side and thus less conspicuous between it and the resin cover member. (12) In the ventilation frame of the present invention, the resin cover member is arranged in line with the opening cover, and on the indoor side of the indoor side facing piece, a first cover portion is formed along the indoor side facing piece, a first projection is formed on the outer circumference of the first cover portion, and a second engagement portion is formed on the inner circumference of the first cover portion that engages with the inner end of the indoor side facing piece from the inner circumference side, and a restricting portion may be formed on the first cover portion at its inner circumference side, projecting toward the indoor side facing piece. With this configuration, the resin cover member is supported on its outer circumference by a protruding portion and on its inner circumference by a restricting portion, so that the first cover portion is positioned with a gap between it and the interior-facing piece. As a result, heat transfer is reduced, and thermal insulation can be improved. (13) In the ventilation frame of the present invention, the resin cover member may include: a second cover portion extending along the indoor-side facing piece on the indoor side of the first cover portion and facing the first cover portion with a gap between them; an upper cover portion extending from the outer peripheral end of the first cover portion to the outer peripheral end of the second cover portion; and a lower cover portion extending from the inner peripheral end of the first cover portion to the inner peripheral end of the second cover portion and facing the upper cover portion with a gap between them. With this configuration, the resin cover member has a hollow section formed by the upper cover section, the first cover section, the second cover section, and the lower cover section. This further reduces heat transfer and can improve thermal insulation. (14) The joinery of the present invention comprises a frame and a shoji screen disposed within the frame, wherein the shoji screen comprises a frame and a facing material disposed within the frame, and the frame comprises the ventilation frame of the present invention described above, which allows ventilation on the exterior and interior sides. According to the building component of the present invention, the same effects as those of the ventilation frame described above can be obtained. (15) In the joinery of the present invention, an airtight material is attached to the frame, the metal frame body of the ventilation frame is hollow and has an outer peripheral facing piece that forms an intermediate opening positioned between the exterior opening and the interior opening, the metal frame body further comprises an outer peripheral facing piece that extends toward the interior from the outer peripheral facing piece on the outer peripheral side of the facing piece, and the interior end of the outer peripheral facing piece may abut against the airtight material. With this configuration, for example, compared to a case where the resin portion of the ventilation frame abuts the airtight seal of the frame, the metal peripheral projection portion, which is less prone to deformation, abuts the airtight seal. This allows for a favorable contact state with the airtight seal, improving the airtight and watertight performance between the frame and the ventilation frame. Furthermore, the presence of the airtight seal makes it difficult for air to pass between the frame and the ventilation frame. Therefore, air passes through each opening formed in the ventilation frame. As a result, air from the outside and inside ventilates through the opening cover. This improves dustproof performance. [Explanation of Symbols]
[0022] 1...Sliding window, 100...Space, 2...Frame, 21...Upper frame, 210...Groove, 211...Rail, 22...Lower frame, 23...Vertical frame, 24...Vertical frame, 3...Frame, 31...Upper frame, 32...Lower frame, 33...Vertical frame, 34...Vertical frame, 4...Outer sash, 41...Face material, 42...Gasket, 5...Inner sash, 6...Ventilation frame, 60...Metal frame, 61...Metal rail member, 610...Opening, 610A...Slot, 611...Face piece, 611a …fitting part, 611b…protruding part, 612…visible piece, 613…rising part, 613a…protruding part, 614…fitting groove, 615…opening, 615A…elongated hole, 62…metal frame member, 620…ventilation opening, 620A…elongated hole, 621…outdoor side visible piece, 621a…groove, 622…lower visible piece, 622a…support part, 623…indoor side visible piece, 623a…groove, 624…upper visible piece, 625… Upper visible piece, 625a…groove, 625c…groove, 626…retaining groove, 627…retaining part, 628…engaging part, 63…resin cover member, 630…hollow part, 631…upper cover part, 631a…protruding part, 632a…first cover part, 632b…second cover part, 633…lower cover part, 634…protruding part, 635…regulating part, 64…opening cover, 640…opening, 640A…elongated hole, 641…filter Cover, 641a...cover part, 641b...fixing part, 641c...fixing part, 641d...protruding part, 641e...groove part, 642...filter, 65...opening / closing member, 651...fitting part, 652...operating knob, 653...flat plate part, 654...watertight material, 654a...first edge member, 654b...second edge member, 66...hollow part, 67...engaging groove, 68...engaging groove, 69...gap, 71...airtight material, 72...airtight material, 73...cushion material.
Claims
1. A ventilation frame that forms a part of the frame of a shoji screen, which has a frame and a facing material, It comprises a metal frame body forming an outdoor opening that opens on the outdoor side, an opening cover which is combined with the metal frame body and forms an indoor opening that communicates with the outdoor opening, and a resin cover member which is combined with the metal frame body. The metal frame has an exterior facing portion, an interior facing portion positioned on the interior side relative to the exterior facing portion, and a projection portion continuous with the exterior facing portion and the interior facing portion. The exterior facing piece, the interior facing piece, and the projection piece have retaining grooves for holding the facing material configured on the inner circumference side of the metal frame, The metal frame has its main body portion located on the outer circumference side of the retaining groove. The opening cover is provided on the main body portion of the metal frame from the interior side. The ventilation frame is characterized in that the resin cover member is provided so as to cover the indoor-side visible piece from the indoor side.
2. The ventilation frame according to claim 1, wherein the inner circumferential end of the indoor-side facing piece and the inner circumferential end of the outdoor-side facing piece extend in the circumferential direction to a position that holds the facing material.
3. The metal frame has a fitting groove formed therein, into which a rail provided on the frame on which the frame is installed is positioned. The ventilation frame according to claim 1, wherein the outdoor opening is formed in the fitting groove.
4. The metal frame has an interior opening and an intermediate opening positioned between the interior openings, and an opening / closing member for opening and closing the intermediate opening is fitted into it. The fitting groove has a visible portion on the outdoor side, a groove-forming portion, and a rising portion continuously formed on the indoor side. The ventilation frame according to claim 3, wherein the outdoor opening is formed from the visible piece to the rising portion.
5. The metal frame has an outer peripheral facing piece that forms an intermediate opening positioned between the exterior opening and the interior opening. The ventilation frame according to claim 1, wherein the intermediate opening is formed on the outer periphery side of the outdoor opening.
6. The metal frame has an outer peripheral facing piece that forms an intermediate opening positioned between the exterior opening and the interior opening. An opening / closing member for opening and closing the intermediate opening is fitted into the metal frame. The ventilation frame according to claim 1, wherein the opening and closing member is provided with a watertight material on the edge of the surface facing the outer peripheral surface piece.
7. The metal frame comprises a metal rail member and a metal frame member that is combined with the metal rail member. The metal rail member has a fitting groove formed therein in which the rail provided in the frame on which the frame body is installed is positioned. The fitting groove has a visible portion on the outdoor side, a groove-forming portion, and a rising portion continuously formed on the indoor side. The metal frame member is composed of an outer peripheral facing piece that forms an intermediate opening positioned between the outdoor opening and the indoor opening, the outdoor facing piece, the indoor facing piece, and the projection piece. A second projection extending in the circumferential direction is formed at the inner end of the aforementioned facing portion. A third projection extending in the outer direction is formed at the outer peripheral end of the aforementioned rising portion. A first groove is formed at the outer peripheral end of the outdoor-facing piece, which engages the second projection from the inner peripheral side. The ventilation frame according to claim 1, wherein a second groove is formed at the outer peripheral end of the outer peripheral facing piece for engaging the third projection from the outer peripheral side.
8. The metal frame member further comprises an outer peripheral facing portion extending toward the interior side from the outer peripheral facing portion on the outer peripheral side of the facing portion, The outer peripheral facing portion is positioned on the outdoor side than the indoor facing portion. The ventilation frame according to claim 7, wherein the opening cover is positioned between the indoor end of the outer peripheral projection piece and the indoor end of the projection piece, and is positioned such that a hollow portion is formed between the indoor opening and the intermediate opening.
9. A support portion is formed in the continuous portion between the aforementioned visible piece and the aforementioned indoor-side visible piece, which protrudes in the outer peripheral direction. The ventilation frame according to claim 1, wherein the opening cover is supported by the support portion.
10. A groove-forming portion is formed in the continuous portion between the aforementioned prospect portion and the aforementioned interior-side facing portion, which forms an engagement groove between itself and the support portion. The ventilation frame according to claim 9, wherein the resin cover member has a first projection that engages with the engagement groove.
11. The ventilation frame according to claim 10, wherein the first protrusion is inclined in the circumferential direction as it approaches the exterior side.
12. The resin cover member is arranged in line with the opening cover and has a first cover portion that extends along the indoor side of the indoor side facing piece, The first protrusion is formed on the outer circumference of the first cover portion. A second engaging portion is formed on the inner circumference side of the first cover portion, which engages with the inner circumference end of the indoor side facing piece from the inner circumference side. The ventilation frame according to claim 10, wherein the first cover portion has a restricting portion that protrudes toward the indoor-side facing piece portion at a position on its inner circumferential side.
13. The resin cover member extends along the indoor-facing facing piece on the indoor side of the first cover portion and faces the first cover portion with a gap between them, An upper cover portion extending from the outer peripheral end of the first cover portion to the outer peripheral end of the second cover portion, A lower cover portion extending from the inner circumferential end of the first cover portion to the inner circumferential end of the second cover portion, and facing the upper cover portion across the gap, The ventilation frame according to claim 12, comprising the following:
14. A joinery comprising a frame and a sliding screen placed within the frame, The aforementioned shoji screen comprises a frame and a facing material placed within the frame, The frame is a door or window fitting comprising a ventilation frame according to any one of claims 1 to 11, which allows ventilation on the exterior and interior sides.
15. The frame is fitted with an airtight material. The metal frame of the ventilation frame is hollow and has an outer peripheral facing portion that forms an intermediate opening positioned between the outdoor opening and the indoor opening. The metal frame further comprises an outer peripheral facing portion extending toward the interior side from the outer peripheral facing portion on the outer peripheral side of the facing portion, The door and window according to claim 14, wherein the interior end of the outer peripheral projection piece abuts against the airtight material.