JP2012031591A - Sash - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sash having a bridge member cover which can be commonly fixed regardless of structure of a frame body through a simple fixing process.SOLUTION: An sash is fitted in a frame body 1 of a rectangular framework. The frame body 1 comprises an indoor frame member 20 made of metal, an outdoor frame member 21, and a bridge member 22 made of resin that connects the both frame members. Each of the indoor frame member 20 and the outdoor frame member 21 includes a fixing face part 23 having a recess 23a for fitting the bridge member 22 at a position opposite to each other. An inner peripheral surface of each of the indoor frame member 20 and the outdoor frame member 21 includes a bridge member cover 24 disposed across the fixing face parts for preventing the bridge member 22 from being exposed. The bridge member cover 24 includes an insertion part 24b that is fitted in an engaging part 28 formed by caulking of the bridge member 22 to be fixed to each of the fixing face part 23 of the outdoor frame member 21 and the fixing face part 23 of the indoor frame member 20.

Description

  The present invention relates to a sash that is mainly installed as a building window, and more particularly to a sash formed by connecting a metal outdoor frame member and an indoor frame member with a resin bridge member.

  Conventionally, it is known to connect a metal outdoor frame member and an indoor frame member with a resin bridge member in order to enhance the heat insulation of a sash provided in a building opening. By connecting the metal member to the inside and outside of the room with a resin bridge material, the outdoor frame member exposed to the outdoor side and the indoor frame member exposed to the indoor side can be thermally insulated, and the heat insulation can be achieved. Can be high. As a sash having a high heat insulating property by such a bridge structure, there is a sash described in Patent Document 1, for example.

Japanese Patent Laid-Open No. 2005-200932

  The portion where the bridge material is provided has a gap between the outdoor frame member and the indoor frame member, and the bridge material is formed of a resin material such as black, so that the portion is exposed from the inner peripheral surface of the frame body. Will impair the design. For this reason, the bridge material cover which covers the said part is provided.

  It has been fixed by being engaged and fixed to the inner peripheral surface of the frame or by screwing. There are various types of frames depending on the types and dimensions of windows, and the upper and lower frames and the vertical frames that make up the frame have different structures. It was necessary to prepare many types corresponding to the frame material. Also, depending on the structure of the frame material, it may be difficult to fix.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a sash having a bridge material cover that can be fixed in common regardless of the structure of the frame material and can be easily fixed.

In order to solve the above-mentioned problems, the sash according to the present invention houses a shoji in a rectangular frame, and the frame includes a metal outdoor frame member and an indoor frame member made of a resin bridge material. In the sash that is connected,
The outdoor frame member and the indoor frame member each include a fixed surface portion provided with a recess for fitting the bridge material at a position facing each other.
A bridge material cover is provided on the inner peripheral surfaces of the outdoor frame member and the indoor frame member so as to pass between the fixed surface portions so as to prevent the bridge material from being exposed. The fixing surface portion of the member and the fixing surface portion of the indoor frame member are provided with an insertion portion that is fitted into and fixed to an engaging portion formed by caulking and fixing the bridge material.

  Further, in the sash according to the present invention, a space portion formed between the engaging portions formed by caulking and fixing of the bridge material extends from the inner peripheral surface side of the frame body toward the bridge material side. It is configured to be formed.

  Further, in the sash according to the present invention, the bridge material cover includes a thin plate-like covering portion that is substantially flush with the inner peripheral surface of the frame body, and the covering portion is at least one of the fixed surface portions of the frame body. It has a feature that it has a width that covers the inner peripheral surface side portion.

  According to the sash according to the present invention, on the inner peripheral surface of the outdoor frame member and the indoor frame member, a bridge material cover is provided so as to pass between each fixed surface portion, and the bridge material is covered so as not to be exposed. The cover includes an insertion portion that is fitted and fixed to an engagement portion formed by caulking and fixing of the bridge material between the fixed surface portion of the outdoor frame member and the fixed surface portion of the indoor frame member. Since it can be fixed in the area between the fixed surface parts, the bridge material cover can be fixed regardless of the structure of the frame, and the same parts can be shared for various types of frames, reducing costs. Can do. Moreover, since it can fix only by inserting a bridge | bridging material cover in the area | region between fixed surface parts, the attachment operation | work of a bridge | bridging material cover can also be made easy.

  Further, according to the sash according to the present invention, the space formed between the engaging portions formed by caulking and fixing the bridge material is formed so as to spread from the inner peripheral surface side of the frame body toward the bridge material side. By doing so, since the opening part of the area | region between fixed surface parts is narrow and it becomes wide, the bridge | bridging material cover cannot remove easily and it can make firm fixation.

  Further, according to the sash according to the present invention, the bridge material cover includes a thin plate-like covering portion that is substantially flush with the inner peripheral surface of the frame body, and the covering portion is at least the inner periphery of the frame body among the respective fixed surface portions. By having a width that covers the surface side part, when the bridge material is fixed by caulking, the inner peripheral surface side part of the fixed surface part to be deformed is covered by the covering part, thereby preventing deterioration of the design. can do.

It is a longitudinal cross-sectional view of the sash in 1st Embodiment. It is a cross-sectional view of the sash in 1st Embodiment. It is sectional drawing before and behind bridge | bridging material fixation in a right vertical frame. FIG. 2 is an enlarged view of the vicinity of the upper frame of FIG. It is the figure which looked at the upper frame from the lower part. It is the figure which looked at the lower frame from the upper part. It is a disassembled expanded sectional view of a right vertical frame. It is an expanded sectional view of the right vertical frame which attached the bridge | bridging material cover. It is a longitudinal cross-sectional view of the sash in 2nd Embodiment. It is a cross-sectional view of the sash in 2nd Embodiment. It is a longitudinal cross-sectional view of the sash in 3rd Embodiment. It is a cross-sectional view of the sash in 3rd Embodiment.

  Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a longitudinal sectional view of the sash in the first embodiment, and FIG. 2 shows a transverse sectional view of the sash in the first embodiment. As shown in each of these drawings, the sash according to the present embodiment is a sliding sash in which an inner shoji 2 and an outer shoji 3 are placed in a sliding manner in a frame 1 formed in a rectangular frame. The inner shoji 2 and the outer shoji 3 are each configured by placing a panel body 5 made of a glass plate in a rectangular housing 4.

  The frame 1 includes an upper frame 10, a lower frame 11, and left and right vertical frames 12 and 12, and these members constitute upper, lower, left and right sides. The upper frame 10, the lower frame 11, and the vertical frame 12 constituting the frame 1 are each configured by connecting a metal indoor frame member 20 and an outdoor frame member 21 with a resin bridge member 22. Has been. Thereby, between the outdoor frame member 21 exposed to the outdoor side and the indoor frame member 20 exposed to the indoor side, heat insulation performance of the sash can be enhanced.

  The indoor frame member 20 constitutes the indoor side surface of the frame 1. On the other hand, the outdoor frame member 21 constitutes a portion of the frame body 1 in which the inner shoji 2 and the outer shoji 3 are accommodated. Anchor members 8 are fixed to the outer peripheral surfaces of the outdoor frame members 21 on the upper, lower, left and right sides, respectively, and the anchor members 8 are fixed to the building body, thereby fixing the frame 1.

  The outdoor frame member 21 of the upper frame 10 is formed with an outer rail 10 a that guides the shoji 3. A central fin 10b is formed at the center of the inner peripheral surface of the upper frame 10 on the indoor side of the outer rail 10a. A concave guide portion 10c is formed by the outdoor frame member 21 and the indoor frame member 20 on the indoor side from the central fin 10b. A guide member 2 a is provided on the upper side of the inner shoma 2, and the guide member 2 a comes into contact with the concave guide portion 10 c and slides to guide the inner shredder 2 in the longitudinal direction by the upper frame 10. An inner rail 11a and an outer rail 11b are formed on the outdoor frame member 21 of the lower frame 11, and the inner shoji 2 and the outer shoji 3 are placed on each of the inner rail 11a and the outer rail 11b so that they can be guided in the longitudinal direction.

  Two bridging members 22 are disposed in the outer side of the frame body 1 along the longitudinal direction of each of the four sides of the frame body 1 so as to be spaced apart from each other. The end portion is fitted into the outdoor frame member 21 to connect the two.

  Fixing surface portions 23, 23 each having a recess 23 a into which the bridge member 22 is fitted are formed at positions where the indoor frame member 20 and the outdoor frame member 21 face each other. The fixed surface portion 23 of the indoor frame member 20 has two concave portions 23a arranged in parallel on the surface facing the outdoor side, and the fixed surface portion 23 of the outdoor frame member 21 has two concave portions 23a aligned on the surface facing the indoor side. It is arranged.

  The position of the bridge member 22 fixed by the fixed surface portion 23 is the outer peripheral portion of the concave guide portion 10c closer to the indoor side in the upper frame 10, and the position between the inner rail 11a and the indoor side surface in the lower frame 11. Yes, in the vertical frame 12, it is a position between the inner-companion swallowing fin 12 d formed on the inner peripheral surface of the outdoor frame member 21 and the indoor side surface.

  As described above, the indoor frame member 20 constitutes only the indoor side surface of the frame 1, and the connection positions of the indoor frame member 20 and the outdoor frame member 21 by the bridge member 22 are arranged as described above on each of the upper, lower, left, and right sides. By this, the bridge | bridging material 22 can be stored in the minimum space, and it can be set as the slim sash which made the expected direction dimension of the frame 1 small.

  Here, the fixing of the bridge member 22 will be described. FIG. 3 shows a cross-sectional view of the vertical frame 12 on the right side in FIG. 2 before and after fixing the bridge member 22. As shown in FIG. 3 (a), before the bridge member 22 is fixed, the inner and outer peripheral surfaces of the fixing surface portion 23 face straight in the indoor / outdoor direction, and the end portions of the fixing surface portion 23 that face each other. Are formed with protrusions 23b projecting to the inner and outer peripheral sides.

  In the state of FIG. 3A, the concave portion 23 a of the fixed surface portion 23 is wider than the end portion of the bridge member 22, and therefore can be easily inserted by sliding the bridge member 22 in the longitudinal direction. When the bridge member 22 is inserted as shown in FIG. 3A, the inner and outer peripheral surfaces of the fixed surface portion 23 are pressed by a roller. At this time, a large pressure is applied to the protrusion 23b, and the end of the bridge member 22 is formed so as to expand toward the end surface, so that the inner and outer peripheral surfaces of the fixed surface portion 23 are bent inward, and the bridge It deforms along the end shape of the material. Thereby, as shown in FIG.3 (b), the width | variety of the recessed part 23a of the fixing surface part 23 becomes narrow, and the bridge | bridging material 22 is crimped and fixed. At the same time, the deformed portion of the protrusion 23b becomes an engaging portion 28 for engaging the bridge member 22 described later.

  As shown in FIG.1 and FIG.2, the angle member 6 is provided in the indoor side surface of the frame 1 over four rounds. The angle member 6 abuts on the upper, lower, left and right sides of the frame body 1 and is fixed by screwing with fixing screws 25.

  The indoor frame member 20 and the outdoor frame member 21 can be connected with only the bridge member 22 to increase the heat insulating property. On the other hand, the resin bridge member 22 falls off in the event of a fire. Thus, the indoor frame member 20 may also fall off. In order to prevent this, the indoor frame member 20 and the outdoor frame member 21 are connected to each of the four sides of the frame body 1. In the present embodiment, the upper frame 10 and the vertical frame 12 are connected by the connecting screw 26, and the lower frame 11 is connected by the connecting member 27.

  FIG. 4 shows an enlarged view of the vicinity of the upper frame 10 in FIG. In this figure, the connecting screw 26 that connects the indoor frame member 20 and the outdoor frame member 21 is omitted. As shown in FIG. 4, the fixing screw 25 for fixing the angle member 6 is inserted and fixed to a region between the two bridge members 22 from the fixing surface portion 23 of the indoor frame member 20. The distal end of the fixing screw 25 is stopped in the region between the bridge members 22, and the angle member 6 and the outdoor frame member 21 are not connected by the fixing screw 25 made of a metal material, so The decline is prevented.

  Although omitted in FIG. 4, as shown in FIG. 1, the connecting screw 26 that connects the indoor frame member 20 and the outdoor frame member 21 for fire prevention also has a position and a longitudinal direction where the fixing screw 25 is inserted. It is inserted in the same position only in the direction. The fixing screw 25 is disposed so that the head is stored in a recess formed on the indoor surface of the indoor frame member 20, and prevents interference with the angle member 6.

  In the lower frame 11, as shown in FIG. 1, the fixing screw 25 that fixes the angle member 6 is inserted into a region between the two bridge members 22, as in the case of the upper frame 10. Yes. Further, the connecting member 27 is screwed to the indoor frame member 20 and the outdoor frame member 21, respectively, so that the indoor frame member 20 and the outdoor frame member 21 are connected via the connecting member 27 for fire prevention. The connecting member 27 is made of a small piece of metal member, and is provided in at least one place in the longitudinal direction of the lower frame 11.

  As for the vertical frame 12, as shown in FIG. 2, the angle member 6 is fixed by a fixing screw 25 with the same structure as the upper frame 10. That is, the fixing screw 25 is inserted into a region between the two bridge members 22. Similarly to the upper frame 10, the indoor frame member 20 and the outdoor frame member 21 are connected for fire prevention by inserting a connection screw 26 into a region between the two bridge members 22.

  In this manner, the fixing screw 25 for fixing the angle member 6 is inserted into the region between the two bridge members 22 that are spaced apart inward and outward in the finding direction, thereby saving space in the finding direction. It is possible to achieve slimming in the direction of finding as well as slimming in the above-mentioned expecting direction. Further, the connecting screw 26 for connecting the indoor frame member 20 and the outdoor frame member 21 for fire prevention is arranged at the same position different from the fixing screw 25 only in the longitudinal direction, so that further space saving in the finding direction can be achieved. Can be achieved.

  The distance between the two bridge members 22 provided on the four sides of the frame body 1 is equal to the outer diameter of the fixing screw 25 and the connecting screw 26. Therefore, the fixing screw 25 and the connecting screw 26 are inserted. It can also be used as a guide for making it possible to improve the workability.

  On the inner peripheral surface of the frame body 1, resin bridge material covers 24 are provided on each of the four sides in order to hide the bridge material 22 and improve the design. As shown in FIG. 1, a central fin 10 b is formed at the inner and outer central positions of the upper frame 10, and a bridge material cover 24 is provided so as to extend over the central fin 10 b and the interior side surface. Further, the lower frame 11 is provided with a bridge material cover 24 so as to extend between the inner rail 11a and the indoor side surface.

  As shown in FIG. 2, the configuration of the inner peripheral surface of the vertical frame 12 is different on the left and right. The left vertical frame 12 on which the shoji 3 is arranged has a shoji facing fin 12a facing the indoor surface of the shoji 3 at the inner and outer central positions of the inner circumferential surface, and further the outer shoji facing fin 12a on the inner circumferential surface. The outside door swallowing fin 12b to be swallowed into the concave area at the end of the outside door 3 is provided on the outdoor side. A bridge material cover 24 is provided on the left vertical frame 12 on which the outer shoji 3 is disposed from the indoor side surface of the inner peripheral surface to the outer shroud-facing fin 12a.

  The right vertical frame 12 on which the inner impingement 2 is arranged has an inner impingement facing fin 12c facing the outdoor surface of the inner impinging child 2 at the inner and outer central positions of the inner peripheral surface, and further the inner peripheral facing fin 12c on the inner peripheral surface. Further, the inner side of the indoor part 2 has a inner part swallowing fin 12d that is swallowed by the concave region at the end of the inner part. A bridge member cover 24 is provided in a region between the inner side surface of the inner peripheral surface and the inner child sucking fin 12d on the right vertical frame 12 in which the inner child 2 is disposed.

  FIG. 5 shows a view of the upper frame 10 as viewed from below. As shown in this figure, an upper center airtight block 13 is provided at the longitudinal center position of the upper frame 10. The upper center airtight block 13 has a plurality of fins on the lower surface, and is arranged in the summing portion of the inner shy hand 2 and the outer shingled child 3 to ensure airtightness in the summing portion. In addition, upper end blocks 14 and 14 that are in contact with the inner and outer obstacles 2 and 3 are disposed at both ends of the upper frame 10. The upper end block 14 is arranged on the outdoor side at the end on the side where the shoji 2 is arranged, and on the indoor side at the end on the side where the shoji 3 is arranged. When the shoji 3 is in the fully open state, the shoji 3 is brought into contact to prevent the housing 4 from colliding with the frame 1. In addition, the concave guide portion 10c of the upper frame 10 is provided with anti-slip stoppers 15 for the anti-swaying of the inner limb 2 at two locations in the longitudinal direction.

  In the upper frame 10, the bridge material cover 24 is connected to the upper center airtight block 13 from the upper end block 14 provided at one end on the side where the external shoji 3 is disposed and from the upper central airtight block 13 to the stopper 15. And between the stopper stoppers 15 and from the stopper stopper 15 to the other end on the side where the inner impingement element 2 is arranged. Accordingly, in the upper frame 10, the region between the fixed surface portion 23 of the indoor frame member 20 and the fixed surface portion 23 of the outdoor frame member 21 includes the bridge material cover 24, the upper center airtight block 13, the upper end block 14, and the stopper stopper 15. Thus, the upper frame 10 is covered over the entire length in the longitudinal direction.

  FIG. 6 shows a view of the lower frame 11 as viewed from above. As shown in this figure, a lower center airtight block 16 is provided at the longitudinal center position of the lower frame 11. The lower center airtight block 16 also has a plurality of fins on the upper surface, and is disposed between the inner and outer children 2 and 3 to ensure airtightness at the summoning portion. Further, lower end blocks 17 and 17 are provided at both ends of the lower frame 11 so as to abut against the inner and outer children 2 and 3 respectively.

  In the lower frame 11, the bridge material cover 24 is arranged from the lower end airtight block 16 to the lower central airtight block 16 provided at one end portion on the side where the external shoji 3 is arranged, and the internal medial 2 from the lower central airtight block 16. It is provided so as to cross each other up to the other end on the side to be provided. Therefore, in the lower frame 11, the region between the fixed surface portion 23 of the indoor frame member 20 and the fixed surface portion 23 of the outdoor frame member 21 is defined by the bridge material cover 24, the lower central airtight block 16, and the lower end block 17. It is coated over the entire length in the longitudinal direction.

  For the vertical frame 12, a bridge material cover 24 is provided so as to extend from the upper frame 10 to the lower frame 11, and the region between the fixed surface portion 23 of the indoor frame member 20 and the fixed surface portion 23 of the outdoor frame member 21 is along the longitudinal direction. Covered.

  FIG. 7 is an enlarged exploded cross-sectional view of the right vertical frame 12 on which the shoji 2 is disposed, and FIG. 8 is an enlarged cross-sectional view of the right vertical frame 12 to which the bridge material cover 24 is attached. The bridge material cover 24 attached to the vertical frame 12 includes a planar covering portion 24a that covers the inner peripheral surface of the vertical frame 12, and an insertion portion 24b that protrudes from the back side of the covering portion 24a. In the bridge material cover 24, the insertion portion 24 b is inserted into the space portion 29 formed by the fixed surface portion 23 of the indoor frame member 20, the fixed surface portion 23 of the outdoor frame member 21, and the bridge material 22. The engagement is fixed.

  As described above, the fixed surface portion 23 of the indoor frame member 20 and the fixed surface portion 23 of the outdoor frame member 21 are deformed by caulking to form a pair of engaging portions 28, and the space portion 29 is formed inside the frame body 1. It has a concave shape that spreads from the peripheral surface side toward the bridge member 22 side. The insertion portion 24b of the bridge material cover 24 has a shape in which the U-shapes are opposed to each other so as to fit and engage with the shape. By inserting this into the space 29, the bridge material cover 24 can be easily fixed.

  As shown in FIG. 8, the covering portion 24 a of the bridge material cover 24 is formed in a thin plate shape that is substantially flush with the inner peripheral surface of the frame 1, and the fixed surface portions 23 that face each other. , 23 has a width covering at least the inner peripheral surface side. As described above, since the fixed surface portion 23 is pressed and deformed during caulking, the design can be kept good by covering this region with the covering portion 24a.

  As described above, at least one side of the bridge member cover 24 is engaged and fixed to a pair of engaging portions 28 formed by the fixing surface portion 23 of the indoor frame member 20 and the fixing surface portion 23 of the outdoor frame member 21. As a result, the bridge member cover 24 can be easily attached, and the engagement portion can be secured regardless of the shape of the frame 1, so that it can be used for other types of windows. Cost reduction by sharing parts can be achieved.

  In the present embodiment, the angle member 6 is provided on the inner side surface of the frame body 1 over four circumferences and is fixed to the frame body 1 with the fixing screw 25. However, the frame body 1 that does not have the angle member 6 is also provided. In this case, only the connecting screw 26 is inserted between the bridge members 22.

  Next, a second embodiment of the present invention will be described. FIG. 9 shows a longitudinal sectional view of the sash according to the second embodiment, and FIG. 10 shows a transverse sectional view of the sash according to the second embodiment. As shown in each of these drawings, the sash of the present embodiment is configured as a fitting window in which the panel body 5 is housed in the frame body 1.

  The frame 1 has an upper frame 10, a lower frame 11, and left and right vertical frames 12 and 12 framed in a square shape. Similarly to the first embodiment, each member constituting the frame body 1 is formed by connecting a metal outdoor frame member 21 and an indoor frame member 20 indoors and outdoors with a resin bridge member 22. Is. The structures of the fixed surface portion 23 and the bridge member 22 of the indoor frame member 20 and the outdoor frame member 21 are the same as those in the first embodiment.

  In this embodiment, since the positions of the bridge member 22 and the fixed surface portion 23 are on the outer peripheral side of the panel body 5, they are not exposed, and therefore the bridge member cover 24 is not provided. Moreover, about the structure which connects the indoor frame member 20 and the outdoor frame member 21 for fire prevention, in this embodiment, it is connecting with the connection member 27 also on all four rounds.

  Next, a third embodiment of the present invention will be described. FIG. 11 shows a longitudinal sectional view of the sash in the third embodiment, and FIG. 12 shows a transverse sectional view of the sash in the third embodiment. As shown in these drawings, the sash according to the present embodiment is configured as a sliding window in which a shoji 7 is housed in a frame 1 so as to be freely opened and closed.

  The frame 1 has an upper frame 10, a lower frame 11, and left and right vertical frames 12 and 12 framed in a square shape. Similarly to the first embodiment, each member constituting the frame body 1 is formed by connecting a metal outdoor frame member 21 and an indoor frame member 20 indoors and outdoors with a resin bridge member 22. Is. The structures of the fixed surface portion 23 and the bridge member 22 of the indoor frame member 20 and the outdoor frame member 21 are the same as those in the first embodiment.

  In this embodiment, since the shoji 7 opens and closes, the inner peripheral surface of the frame body 1 is exposed over four rounds. For this reason, in this embodiment, the bridge | bridging material cover 24 is provided in each of 4 rounds. The bridge material cover 24 is the same part as that shown in FIGS. 4 and 5 and is attached to each side of the four circumferences. About the structure which connects the indoor frame member 20 and the outdoor frame member 21 for fire prevention, it has connected with the connection member 27 also on the four circumferences like 2nd Embodiment.

  As mentioned above, although embodiment of this invention was described, application of this invention is not restricted to these embodiment, It can apply variously within the range of the technical idea.

DESCRIPTION OF SYMBOLS 1 Frame 2 Inner shoji 3 External shoji 4 Housing 5 Panel body 6 Angle member 7 Shoji 10 Upper frame 11 Lower frame 12 Vertical frame 20 Indoor frame member 21 Outdoor frame member 22 Bridge material 23 Fixed surface part 23a Recessed part 24 Bridge material cover 24a Covering portion 24b Inserting portion 25 Fixing screw 26 Connecting screw 27 Connecting member 28 Engaging portion 29 Space portion

Claims (3)

In a sash formed by connecting a shoji in a frame formed by a rectangular frame, the frame is formed by connecting a metal outdoor frame member and an indoor frame member with a resin bridge member,
The outdoor frame member and the indoor frame member each include a fixed surface portion provided with a recess for fitting the bridge material at a position facing each other.
A bridge material cover is provided on the inner peripheral surfaces of the outdoor frame member and the indoor frame member so as to pass between the fixed surface portions so as to prevent the bridge material from being exposed. A sash comprising an insertion portion fitted into and fixed to an engaging portion formed by caulking and fixing of the bridge material between the fixing surface portion of the member and the fixing surface portion of the indoor frame member.   The space portion formed between the engaging portions formed by caulking and fixing the bridge material is formed so as to expand from the inner peripheral surface side of the frame body toward the bridge material side. Item 1. A sash according to item 1.   The bridge material cover includes a thin plate-like covering portion that is substantially flush with the inner peripheral surface of the frame body, and the covering portion covers at least the inner peripheral surface side portion of the frame body among the fixed surface portions. The sash according to claim 1, wherein the sash is provided.

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