Fixture

Abstract

To provide an environmentally friendly fixture.SOLUTION: A sliding window 1 includes a long left stile 33. The left stile 33 includes: an outdoor frame 41 formed of a metal material; an indoor frame 51 that is formed of a metal material and is provided inside of the outdoor frame 41; and a bridge part 71 that is provided between the outdoor frame 41 and the indoor frame 51 to connect the outdoor frame 41 and the indoor frame 51. The outdoor frame 41 has multiple outdoor side extension pieces 47 each extending to the interior. The indoor frame 51 has multiple indoor side extension pieces 57 each extending to the outside of the room. The bridge part 71 connects the multiple outdoor side extension pieces 47, the multiple indoor side extension pieces 57 and the multiple outdoor side extension pieces 47 adjacent to each other in the vertical direction.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present disclosure relates to fittings.

Background Art

[0002] Conventionally, from the viewpoints of energy saving, decarbonization, and low carbonization, fittings with improved heat insulation performance have been desired. In contrast, there is known a fitting having an indoor-side frame disposed on the indoor side spaced apart from each other, an outdoor-side frame disposed on the outdoor side, and a bridge member made of a resin having a low thermal conductivity, which is disposed between the indoor-side frame and the outdoor-side frame (see, for example, Patent Document 1). Since heat conduction between the indoor-side frame and the outdoor-side frame is blocked by this bridge member, excellent heat insulation performance can be obtained.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, the SDGs have become a global issue, and in the case of building materials products as well, the requirements for decarbonization and low carbonization and the requirements for resource circulation have been further increasing. For this reason, fittings that are preferably heat-insulatable and that are more easily recyclable with the progress of resource circulation are desired. However, in the fitting described in Patent Document 1, in the fitting described in Patent Document 1, the bridge member is relatively firmly fixed to the outdoor-side frame and the indoor-side frame. Therefore, when the product life has ended, it has been difficult to disassemble the bridge member, the outdoor-side frame, and the indoor-side frame. The bridge member is made of a resin. Further, from the viewpoint of facilitating recycling and the like, it is desired to reduce the amount of use and replace the resin. Thus, the fitting of Patent Document 1 has room for improvement in terms of environmental performance.

[0005] The present disclosure aims to provide a fitting with excellent environmental performance.

Means for Solving the Problems

[0006] The present disclosure relates to a fitting provided in an opening of a building, comprising a sash formed by framing a long member which is either a frame body or a mullion. The long member has an outdoor side frame portion formed of a metal material, an indoor side frame portion provided on the indoor side of the outdoor side frame portion and formed of a metal material, and a bridge portion provided between the outdoor side frame portion and the indoor side frame portion for connecting the outdoor side frame portion and the indoor side frame portion. When the longitudinal direction of the long member is defined as the long dimension direction, the outdoor side frame portion has a plurality of outdoor side extension pieces each extending inwardly, the indoor side frame portion has a plurality of indoor side extension pieces each extending outwardly, and the bridge portion connects the outdoor side extension piece and the indoor side extension piece adjacent to the outdoor side extension piece in the long dimension direction.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0008] (First Embodiment) Hereinafter, the first embodiment of the present disclosure will be described with reference to the drawings. As shown in FIG. 1, the sliding window 1 of the present embodiment is provided in the opening 101 formed in the outer wall of the building 100.

[0009] In this specification, the "vertical direction" refers to the up-and-down direction. The "left-right direction" refers to the left-right direction when the sliding window 1 is viewed from the indoor side X2. The "depth direction" refers to the indoor-outdoor direction in the sliding window 1. The "front direction" refers to the surface direction of the surface (for example, the glass 35) that can be seen forward when the sliding window 1 is viewed from the front. Also, the depth direction is also the depth direction of the sliding window 1. The front direction is also the up-and-down and left-right directions. The "front surface" refers to a surface that extends perpendicular to the indoor-outdoor direction and is arranged so as to face the indoor side and the outdoor side respectively. The "depth surface" refers to a surface that extends along the indoor-outdoor direction.

[0010] The sliding window 1 has a frame body 2 disposed at the opening peripheral edge of the opening 101, and a pair of shutters 3 and 8 that are sliding shutters.

[0011] The frame body 2 has an upper frame 21, a lower frame 22, and a pair of left and right vertical frames 23. The upper frame 21, the lower frame 22, and each vertical frame 23 are framed in a rectangular shape. Note that the frame body 2 corresponds to a sash.

[0012] Each shutter 3, 8 is disposed inside the frame body 2. Each shutter 3, 8 has an outer shutter 3 on the outdoor side and an inner shutter 8 on the indoor side. Each shutter 3, 8 is slidable horizontally inside the frame body 2 respectively.

[0013] The outer shutter 3 has an upper frame 31, a lower frame 32, a left vertical frame 33, a right vertical frame 34, and a plate-shaped glass 35 fitted inside the frame formed by these frames. Note that the frame formed by the upper frame 31, the lower frame 32, the left vertical frame 33, and the right vertical frame 34 corresponds to a sash.

[0014] The inner shutter 8 has an upper frame 81, a lower frame 82, a left vertical frame 83, a right vertical frame 84, and a glass 85 fitted inside the frames formed by these frames.

[0015] When viewed from the indoor side, the outer shutter 3 is provided on the left side of the inner shutter 8. The right vertical frame 34 and the left vertical frame 83 serve as mating frames. A locking and unlocking member 9 for locking and unlocking the shutters 3 and 8 is provided on the right vertical frame 34 and the left vertical frame 83. The locking and unlocking member 9 is, for example, a crescent lock.

[0016] Note that the upper frame 21, the lower frame 22, and each vertical frame 23 respectively correspond to a frame body and a long member. Each upper frame 31, 81, each lower frame 32, 82, each left vertical frame 33, 83, and each right vertical frame 34, 84 respectively correspond to a frame body and a long member. In this specification, the "long member" means any member among the frame bodies and frames constituting the sash. In the following description, the upper frame 21, the lower frame 22, each vertical frame 23, each upper frame 31, 81, each lower frame 32, 82, each left vertical frame 33, 83, and each right vertical frame 34, 84 may simply be referred to as "long members".

[0017] Subsequently, the configuration of the frames constituting each shutter 3, 8 will be described. The configuration of each frame constituting each shutter 3, 8 is generally the same. Hereinafter, the left vertical frame 33 will be described as an example.

[0018] As shown in FIG. 2, the left vertical frame 33 is divided into three regions by dividing it into three equal parts in its longitudinal direction (vertical direction). Among the three regions, the middle region is defined as the first region A1, the upper end side region is defined as the second region A2, and the lower end side region is defined as the third region A3. The first region A1, the second region A2, and the third region A3 are each set as a rectangular prism-shaped space extending in the vertical direction, for example. Also, the second region is not necessarily the upper end side region among the three regions. Among the three regions, the lower end side region may be defined as the second region and the upper end side region may be defined as the third region.

[0019] As shown in FIGS. 3 and 4, the left vertical frame 33 is divided into two parts in the indoor-outdoor direction, and includes an outdoor side frame portion 41, an indoor side frame portion 51 provided on the indoor side of the outdoor side frame portion 41, and a bridge portion 71 provided between the outdoor side frame portion 41 and the indoor side frame portion 51 for connecting the outdoor side frame portion 41 and the indoor side frame portion 51 and having heat insulation properties.

[0020] Both the outdoor side frame portion 41 and the indoor side frame portion 51 are long frame members. Both the outdoor side frame portion 41 and the indoor side frame portion 51 are formed of a metal material, specifically, formed of aluminum. However, the material forming the outdoor side frame portion 41 and the indoor side frame portion 51 is not limited to aluminum.

[0021] The outdoor side frame portion 41 has an outdoor side finding wall 42 extending in the finding direction, an outdoor side projecting wall 43 extending indoors from the middle portion in the left-right direction of the outdoor side finding wall 42, and an outdoor side glass support portion 44 provided at the indoor side and right end portion of the outdoor side finding wall 42 for supporting the glass 35.

[0022] The indoor side frame portion 51 has an indoor side finding wall 52 extending in the finding direction, an indoor side projecting wall 53 extending outdoors from the middle portion in the left-right direction of the indoor side finding wall 52, and an indoor side glass support portion 56 provided at the outdoor side and right end portion of the indoor side projecting wall 55 for supporting the glass 35.

[0023] The outdoor side projecting wall 43 and the indoor side projecting wall 53 are arranged side by side in the projecting direction with a gap therebetween. The outdoor side glass support portion 44 and the indoor side glass support portion 56 are arranged side by side in the projecting direction with a gap therebetween. Although not shown, the glass 35 is sandwiched between the outdoor side glass support portion 44 and the indoor side glass support portion 56 together with an airtight material.

[0024] Here, the outdoor frame portion 41 has an outdoor extending piece 47 that extends toward the indoor side. The outdoor extending piece 47 extends from the indoor-side end of the outdoor projected wall 43 toward the indoor side. The outdoor extending piece 47 is integrally formed with the outdoor projected wall 43. The outdoor extending piece 47 is formed of a metal material, for example, aluminum. A plurality of outdoor extending pieces 47 are provided at intervals in the longitudinal direction of the left vertical frame 33, and specifically, they are arranged at equal intervals over the entire longitudinal direction of the left vertical frame 33. The outdoor projected wall 43 and each outdoor extending piece 47 form a comb-like shape as a whole.

[0025] The indoor frame portion 51 has an indoor extending piece 57 that extends toward the outdoor side. The indoor extending piece 57 extends from the outdoor-side end of the indoor projected wall 53 toward the outdoor side. The indoor extending piece 57 is integrally formed with the indoor projected wall 53. The indoor extending piece 57 is formed of a metal material, for example, aluminum. A plurality of indoor extending pieces 57 are provided at intervals in the longitudinal direction of the left vertical frame 33, and specifically, they are arranged at equal intervals over the entire longitudinal direction of the left vertical frame 33. The indoor projected wall 53 and each indoor extending piece 57 form a comb-like shape as a whole. Note that the material forming the outdoor extending piece 47 and the indoor extending piece 57 is not limited to aluminum.

[0026] Each outdoor extending piece 47 and each indoor extending piece 57 are alternately arranged in the vertical direction. Adjacent outdoor extending piece 47 and indoor extending piece 57 are spaced apart. Note that the outdoor extending piece 47 and the indoor extending piece 57 do not necessarily have to be alternately arranged. For example, between two outdoor extending pieces 47, a plurality of indoor extending pieces 57 may be adjacent to each other.

[0027] Each outdoor extending piece 47 and each indoor extending piece 57, for example, have the same vertical dimension. However, it is not limited to this, and each outdoor extending piece 47 and each indoor extending piece 57 may have different vertical dimensions.

[0028] In addition, the outdoor frame portion 41 and the indoor frame portion 51 are each entirely formed of metal. This makes it easier to recycle used long members, thereby improving the environmental performance of the long members.

[0029] The bridge portion 71 includes a first rod-shaped member 72, a second rod-shaped member 73, and a third rod-shaped member 74. The first rod-shaped member 72, the second rod-shaped member 73, and the third rod-shaped member 74 may be collectively referred to as "each rod-shaped member 72, 73, 74".

[0030] Each of the rod-shaped members 72, 73, 74 has an elongated shape extending in the vertical direction. The longitudinal dimension of the first rod-shaped member 72 is, for example, slightly larger than 1 / 3 of the longitudinal dimension of the left vertical frame 33. However, the longitudinal dimension of the first rod-shaped member 72 is not limited to this.

[0031] The first rod-shaped member 72 is formed of a heat-insulating material, for example, bamboo. However, it is not limited to this, and the first rod-shaped member 72 may be formed of, for example, carbon fiber reinforced plastic (CFRP). The heat-insulating material forming the rod-shaped member preferably has a thermal conductivity of 0.3 W / (m·K) or less, and more preferably a thermal conductivity of 0.25 W / (m·K) or less.

[0032] The longitudinal dimensions of the second rod-shaped member 73 and the third rod-shaped member 74 are, for example, each 1 / 4 of the longitudinal dimension of the left vertical frame 133. However, the longitudinal dimensions of the second rod-shaped member 73 and the third rod-shaped member 74 are not limited to 1 / 4 of the longitudinal dimension of the left vertical frame 33.

[0033] Both the second rod-shaped member 73 and the third rod-shaped member 74 are bolts. The second rod-shaped member 73 and the third rod-shaped member 74 are each formed of a metal material, for example, formed of aluminum. However, the material forming the second rod-shaped member 73 or the third rod-shaped member 74 is not limited to aluminum, and may be formed of, for example, resin. By forming the second rod-shaped member 73 and the third rod-shaped member 74 of a material with low thermal conductivity, the heat insulation performance can be improved.

[0034] In addition, the material forming the rod-shaped member is preferably not a petroleum-derived material. When the material forming the rod-shaped member is resin, the resin is preferably a non-petroleum-based material or a recycled material.

[0035] Further, the outdoor frame portion 41 has a plurality of outdoor holes 48. Each outdoor hole 48 is provided in each outdoor extension piece 47, and each outdoor extension piece 47 penetrates in the longitudinal direction of the left vertical frame 33. One outdoor hole 48 is provided in one outdoor extension piece 47.

[0036] The indoor frame portion 51 has a plurality of indoor holes 58. Each indoor hole 58 is provided in each indoor extension piece 57, and each indoor extension piece 57 penetrates in the longitudinal direction of the left vertical frame 33. One indoor hole 58 is provided in one indoor extension piece 57.

[0037] In addition, each outdoor hole 48 and each indoor hole 58, for example, have the same inner peripheral area of the hole. However, it is not limited to this, and each outdoor hole 48 and each indoor hole 58 may have different inner peripheral areas of the hole.

[0038] Each of the rod-shaped members 72, 73, 74 passes through the outdoor hole 48 and the indoor hole 58, respectively. The first rod-shaped member 72 is arranged across the first region A1, the lower part of the second region A2, and the upper part of the third region A3. In those regions, the first rod-shaped member 72 passes through the outdoor hole 48 and the indoor hole 58.

[0039] The second rod-shaped member 73 is provided at an interval in the vertical direction from the first rod-shaped member 72. The second rod-shaped member 73 is disposed in the second region A2, and more specifically, is disposed at the upper end of the second region A2. In this region, the second rod-shaped member 73 passes through the outdoor-side hole portion 48 and the indoor-side hole portion 58.

[0040] The third rod-shaped member 74 is provided at an interval in the vertical direction from the first rod-shaped member 72. The third rod-shaped member 74 is disposed in the third region A3, and more specifically, is provided at the lower end of the third region A3. In this region, the third rod-shaped member 74 passes through the outdoor-side hole portion 48 and the indoor-side hole portion 58.

[0041] Thereby, the bridge portion 71 can connect the outdoor-side frame portion 41 and the indoor-side frame portion 51. The strength of the left vertical frame 33 can be improved by the bridge portion 71.

[0042] Note that the rod-shaped member does not necessarily have to be disposed at each end in the vertical direction of the left vertical frame 33 as long as the strength of the left vertical frame 33 can be ensured. Further, the rod-shaped members disposed at each end in the vertical direction of the left vertical frame 33 do not necessarily have to be bolts, and may be round bars without screw grooves. A rod-shaped member that is a bolt and a rod-shaped member that is a round bar may be disposed at each end in the vertical direction of the left vertical frame 33.

[0043] The heat of the outdoor-side frame portion is transmitted to the indoor-side frame portion through the contact portions between the inner peripheral surface of the indoor-side hole portion and the rod-shaped member and between the rod-shaped member and the inner peripheral surface of the indoor-side hole portion. However, the contact areas between each of the rod-shaped members 72, 73 and the outdoor-side hole portion 48 and the indoor-side hole portion 58 are relatively small. For this reason, since the heat transfer area in the bridge portion can be reduced, the heat insulation performance of the long member can be effectively improved. Thereby, it is possible to provide a long member that can suppress the amount of heat insulation material used while having sufficient strength and heat insulation performance.

[0044] Therefore, it is possible to provide a fitting with excellent environmental performance.

[0045] The first rod-shaped member 72, the second rod-shaped member 73, and the third rod-shaped member 74 are arranged at intervals in the vertical direction. In this case, in the left vertical frame 33, a plurality of bridge portions 71 are provided at intervals in the vertical direction.

[0046] Thereby, in the left vertical frame 33, compared with the case where the bridge portion 71 is provided over the entire vertical range of the left vertical frame 33, the amount of material of the bridge portion can be reduced. In addition, since the heat transfer path in the bridge portion 71 can be divided, the heat insulation performance of the long member can be improved.

[0047] The first rod-shaped member 72 is formed of a material having heat insulation properties. Thereby, the heat insulation performance of the long member can be further improved.

[0048] The second rod-shaped member 73 and the third rod-shaped member 74 are formed of, for example, aluminum. Thereby, the strength of the second region A2 and the third region A3 can be further improved. In addition, the second rod-shaped member 73 and the third rod-shaped member 74 can be easily recycled.

[0049] The left vertical frame 33 can be easily disassembled by pulling out the respective rod-shaped members 72, 73, 74. Thereby, since the used long member can be easily recycled, it is possible to provide a fitting with excellent environmental performance.

[0050] According to the sliding window 1 of the present embodiment, the following effects are achieved.

[0051] According to the present embodiment, the outdoor side frame portion 41 has a plurality of outdoor side extension pieces 47 extending inwardly. The indoor side frame portion 51 has a plurality of indoor side extension pieces 57 extending outwardly. The bridge portion 71 connects the outdoor side extension piece 47 and the indoor side extension piece 57 adjacent to the outdoor side extension piece 47 in the vertical direction.

[0052] As a result, the heat transfer area between the outdoor side frame part and the indoor side frame part can be made relatively small, so that heat transfer between indoors and outdoors can be suppressed. In that case, sufficient heat insulation performance can be ensured with a smaller amount of heat insulating material. Therefore, since the amount of material used for heat insulation can be suppressed, a long member with excellent environmental performance can be provided.

[0053] According to the present embodiment, the bridge part 71 has rod-shaped members 72, 73, 74 extending in the vertical direction. The outdoor side frame part 41 has an outdoor side hole part 48. The indoor side frame part 51 has an indoor side hole part 58. The first rod-shaped member 72, the second rod-shaped member 73, and the third rod-shaped member 74 are inserted through the outdoor side hole part 48 and the indoor side hole part 58, respectively.

[0054] As a result, the bridge part 71 can connect the outdoor side frame part 41 and the indoor side frame part 51 and improve the strength of the long member.

[0055] The heat of the outdoor side frame part is transmitted to the indoor side frame part through the contact part between the inner peripheral surface of the indoor side hole part and the rod-shaped member and between the rod-shaped member and the inner peripheral surface of the indoor side hole part. According to the configuration of the above embodiment, the contact area between each of the rod-shaped members 72, 73, 74 and the outdoor side hole part 48 or the indoor side hole part 58 is relatively small.

[0056] As a result, the heat transfer area in the bridge part can be made small, so that the heat insulation performance of the long member can be effectively improved.

[0057] And, while ensuring sufficient strength and heat insulation performance, the amount of material used for heat insulation can be suppressed, so that the environmental performance of the joinery can be further improved.

[0058] Also, the left vertical stile 33 can be easily disassembled by pulling out each of the rod-shaped members 72, 73, 74.

[0059] This makes it easier to recycle the used long members, thus further improving the environmental performance of the fittings.

[0060] According to the present embodiment, the first rod-shaped member 72, the second rod-shaped member 73, and the third rod-shaped member 74 are provided at intervals in the vertical direction.

[0061] This can reduce the amount of material of the bridge portion compared to the case where the bridge portion 71 is provided over the entire vertical range of the left vertical frame 33 in the left vertical frame 33. In addition, since the heat transfer path in the bridge portion 71 can be divided, the heat insulation performance of the long member can be improved.

[0062] According to the present embodiment, the outdoor extension piece 47 and the indoor extension piece 57 are alternately arranged in the vertical direction.

[0063] This enables the outdoor extension piece 47 and the indoor extension piece 57 to be easily connected by the bridge portion 71.

[0064] According to the present embodiment, the outdoor extension piece 47 and the indoor extension piece 57 adjacent to the outdoor extension piece 47 are arranged at intervals. Therefore, the outdoor hole portion 48 and the indoor hole portion 58 adjacent to the outdoor hole portion 48 are arranged at intervals.

[0065] This can suppress heat transfer between the outdoor extension piece 47 (outdoor hole portion 48) and the indoor extension piece 57 (indoor hole portion 58), so that the heat insulation performance of the long member can be improved.

[0066] According to this embodiment, the outdoor extension pieces 47 (outdoor holes 48) are arranged at equal intervals across the entire vertical direction of the outdoor frame portion 41. The indoor extension pieces 57 (indoor holes 58) are arranged at equal intervals across the entire vertical direction of the indoor frame portion 51. In this case, by selectively using bar-shaped members with various longitudinal dimensions, the contact area between the bar-shaped member and the outdoor frame portion and the indoor frame portion can be adjusted, so that the strength and heat insulation performance of the long member can be easily adjusted.

[0067] (First Modification Example of the First Embodiment) Hereinafter, a first modification example of the first embodiment of the present disclosure will be described with reference to FIGS. 5 to 7. The description will focus on the differences from the first embodiment. For the same configurations as those in the first embodiment, the same reference numerals will be given and the description will be omitted.

[0068] As shown in FIGS. 5 to 7, in this embodiment, the outdoor frame portion 141 includes an outdoor finding wall 142 extending in the finding direction, an outdoor looking-in wall 143 extending indoors from the middle portion in the left-right direction of the outdoor finding wall 142, and an outdoor glass support portion 144 provided at the indoor and right end of the outdoor finding wall 142 for supporting the glass 135.

[0069] The indoor frame portion 151 includes a first indoor finding wall 152 extending in the finding direction, a first indoor looking-in wall 153 extending outdoors from the right end of the first indoor finding wall 152, a second indoor finding wall 154 extending to the right from the outdoor end of the first indoor looking-in wall 153, a second indoor looking-in wall 155 extending indoors from the right end of the second indoor finding wall 154, and an indoor glass support portion 156 provided at the outdoor and right end of the second indoor looking-in wall 155 for supporting the glass 135.

[0070] In the indoor side frame portion 151, the portion surrounded by the first indoor side finding wall 152, the second indoor side prospective wall 155, and the second indoor side finding wall 154 forms a recess that is concave toward the outdoor side. In other words, the indoor side frame portion 151 has a recessed portion 161 on its indoor side that is concave toward the outdoor side. At each end on the indoor side of the inner peripheral surface of the recessed portion 161, a return portion 162 protruding from the inner peripheral surface of the recessed portion 161 is provided respectively.

[0071] In the present embodiment, the left vertical frame 133 has a cover member 164 attached to the indoor side of the indoor side frame portion 151. The cover member 164 has a rectangular plate shape, and has a covering portion 165 whose plate surface extends parallel to the prospective direction, and a pair of left and right engaging protrusions 166 that are formed as a pair, extend from the covering portion 165 to the outdoor side respectively, and have a return at the outdoor side end. In the first embodiment, a long member (for example, the left vertical frame 33) may have a cover member.

[0072] The covering portion 165 and the indoor side frame portion 151 have substantially the same dimensions in the vertical direction and the horizontal direction. The covering portion 165 covers the entire indoor side frame portion 151 when viewed from the indoor side (see FIG. 5). The covering portion 165 is formed of, for example, wood. Thereby, the design property when the left vertical frame 133 is viewed from the indoor side can be enhanced. Note that the covering portion 165 does not necessarily have to be formed of wood, and may be formed of, for example, metal or resin. By forming the covering portion 165 of metal, the strength of the long member can be improved. Also, by forming the covering portion 165 of a material having heat insulating properties, the heat insulating performance of the long member can be improved. Even in those cases, the covering portion 165 is preferably excellent in design property.

[0073] The covering portion 165 covers the recessed portion 161 from the indoor side. For this reason, an indoor side space portion 168 is formed by being surrounded by the recessed portion 161 and the covering portion 165. In the indoor side space portion 168, for example, a heat insulating material (not shown) is disposed. In that case, the heat insulating performance of the left vertical frame 133 can be further improved.

[0074] Each engaging projection 166 is engaged with the return portion 162 respectively. Thereby, the cover member 164 is attached to the indoor side frame portion 151. Note that the cover member 164 can be easily removed from the indoor side frame portion 151 by releasing the engagement between each engaging projection 166 and the return portion 162. For this reason, even when a heat insulating material is disposed in the indoor side space portion 168, the left vertical frame 133 can be easily disassembled and separated. Further, since the cover member can be easily replaced, for example, cover members of various designs can be prepared and used according to the user's preference.

[0075] In the present embodiment, the arrangements of the outdoor side extension piece and the indoor side extension piece are different from those in the first embodiment. In the first region A1, one outdoor side extension piece 147 and two indoor side extension pieces 157 are arranged. In the first region A1, the outdoor side extension piece 147 is arranged between the indoor side extension pieces 157. In the second region A2, three outdoor side extension pieces 147 and three indoor side extension pieces 157 are arranged. In the second region A2, the outdoor side extension pieces 147 and the indoor side extension pieces 157 are arranged alternately. In the third region A3, three outdoor side extension pieces 147 and three indoor side extension pieces 157 are arranged. In the third region A3, the outdoor side extension pieces 147 and the indoor side extension pieces 157 are arranged alternately.

[0076] The number of the outdoor side extension pieces 147 and the indoor side extension pieces 157 arranged in the first region A1 is smaller than the number of the outdoor side extension pieces 147 and the indoor side extension pieces 157 arranged in the second region A2. The number of the outdoor side extension pieces 147 and the indoor side extension pieces 157 arranged in the first region A1 is smaller than the number of the outdoor side extension pieces 147 and the indoor side extension pieces 157 arranged in the third region A3.

[0077] The adjacent outdoor extended pieces 147 and indoor extended pieces 157 are spaced apart from each other. Note that the outdoor extended pieces 147 and the indoor extended pieces 157 do not necessarily have to be arranged alternately. For example, between two outdoor extended pieces 147, a plurality of indoor extended pieces 157 may be adjacent to each other. Each outdoor extended piece 147 and each indoor extended piece 157, for example, have the same vertical dimension. However, it is not limited to this, and the vertical dimensions of each outdoor extended piece 147 and each indoor extended piece 157 may be different. For example, the vertical dimensions of the outdoor extended pieces 147 and the indoor extended pieces 157 arranged in the second region A2 may be larger than those of the outdoor extended pieces 147 and the indoor extended pieces 157 arranged in the first region A1.

[0078] Each first outdoor side hole portion 148 is provided in each outdoor extended piece 147, and penetrates each outdoor extended piece 147 in the longitudinal direction of the left vertical frame 133. Each second outdoor side hole portion 149 is provided in each outdoor extended piece 147, and penetrates each outdoor extended piece 147 in the vertical direction. In other words, two outdoor side hole portions are provided in one outdoor extended piece 147. The first outdoor side hole portion 148 and the second outdoor side hole portion 149 are arranged side by side in the prospective direction. The first outdoor side hole portion 148 is arranged on the indoor side of the second outdoor side hole portion 149.

[0079] The indoor side frame portion 151 has a plurality of first indoor side hole portions 158 and a plurality of second indoor side hole portions 159. Each first indoor side hole portion 158 is provided in each indoor extended piece 157, and penetrates each indoor extended piece 157 in the longitudinal direction of the left vertical frame 133. Each second indoor side hole portion 159 is provided in each indoor extended piece 157, and penetrates each indoor extended piece 157 in the vertical direction. In other words, two indoor side hole portions are provided in one indoor extended piece 157. The first indoor side hole portion 158 and the second indoor side hole portion 159 are arranged side by side in the prospective direction. The first indoor side hole portion 158 is arranged on the indoor side of the second indoor side hole portion 159.

[0080] Note that the first outdoor side hole portion 148 and the second outdoor side hole portion 149 may be collectively referred to as the "outdoor side hole portions 148, 149". The outdoor side hole portions 148, 149 respectively correspond to the outdoor side hole portions. The first indoor side hole portion 158 and the second indoor side hole portion 159 may be collectively referred to as the "indoor side hole portions 158, 159". The indoor side hole portions 158, 159 respectively correspond to the outdoor side hole portions. Also, the first outdoor side hole portion 148, the second outdoor side hole portion 149, the first indoor side hole portion 158, and the second indoor side hole portion 159 all have the same inner peripheral area of the hole. However, it is not limited to this. For example, the inner peripheral area of the hole of the first outdoor side hole portion 148 and the inner peripheral area of the hole of the second outdoor side hole portion 149 may be different, or the inner peripheral area of the hole of the first indoor side hole portion 158 and the inner peripheral area of the hole of the second indoor side hole portion 159 may be different.

[0081] In this modified example, the bridge portion 171 has a first rod-shaped member 172, a second rod-shaped member 173, a third rod-shaped member 174, a fourth rod-shaped member 175, and a fifth rod-shaped member 176. Note that the first rod-shaped member 172, the second rod-shaped member 173, the third rod-shaped member 174, the fourth rod-shaped member 175, and the fifth rod-shaped member 176 may be collectively referred to as the "rod-shaped members 172, 173, 174, 175, 176".

[0082] Each of the rod-shaped members 172, 173, 174, 175, 176 has an elongated shape extending in the vertical direction. The longitudinal dimension of each of the rod-shaped members 172, 173, 174, 175, 176 is, for example, smaller than 1 / 3 of the longitudinal dimension of the left vertical frame 133. The longitudinal dimensions of the first rod-shaped member 172, the second rod-shaped member 173, and the third rod-shaped member 174 are, for example, each 1 / 5 of the longitudinal dimension of the left vertical frame 133. The longitudinal dimensions of the fourth rod-shaped member 175 and the fifth rod-shaped member 176 are, for example, each 1 / 4 of the longitudinal dimension of the left vertical frame 133. However, the longitudinal dimensions of the first rod-shaped member 172, the second rod-shaped member 173, and the third rod-shaped member 174 are not limited to 1 / 5 of the longitudinal dimension of the left vertical frame 133. The longitudinal dimensions of the fourth rod-shaped member 175 and the fifth rod-shaped member 176 are not limited to 1 / 4 of the longitudinal dimension of the left vertical frame 133.

[0083] The first rod-shaped member 172, the second rod-shaped member 173, and the third rod-shaped member 174 are each formed of a heat-insulating material such as bamboo. The fourth rod-shaped member 175 and the fifth rod-shaped member 176 are both bolts. The fourth rod-shaped member 175 and the fifth rod-shaped member 176 are each formed of a metal material such as aluminum. However, the materials of the respective rod-shaped members 172, 173, 174, 175, and 176 are not limited to these.

[0084] The first rod-shaped member 172 is disposed in the first region A1. The first rod-shaped member 172 is disposed at least at the vertical center of the first region A1. The first rod-shaped member 172 passes through the first outdoor side hole 148 and the first indoor side hole 158.

[0085] The second rod-shaped member 173 and the fourth rod-shaped member 175 are disposed in the second region A2. The second rod-shaped member 173 and the fourth rod-shaped member 175 are disposed at least at the upper end of the second region A2. The second rod-shaped member 173 passes through the first outdoor side hole 148 and the first indoor side hole 158. The fourth rod-shaped member 175 passes through the second outdoor side hole 149 and the second indoor side hole 159.

[0086] The third rod-shaped member 174 and the fifth rod-shaped member 176 are disposed in the third region A3. The third rod-shaped member 174 and the fifth rod-shaped member 176 are disposed at least at the lower end of the third region A3. The third rod-shaped member 174 passes through the first outdoor side hole 148 and the first indoor side hole 158. The fifth rod-shaped member 176 passes through the second outdoor side hole 149 and the second indoor side hole 159.

[0087] Note that the first rod-shaped member 172, the second rod-shaped member 173, and the third rod-shaped member 174 are arranged at intervals in the vertical direction. The fourth rod-shaped member 175 and the fifth rod-shaped member 176 are arranged at intervals in the vertical direction.

[0088] In the case of a long member, it is considered that the amount of material of the bridge part required to ensure the strength of the long member varies depending on the part of the long member. Topological optimization was performed on the long member to derive the arrangement of the bridge part that can minimize the amount of material while ensuring the strength of the long member. As a result, when having an opening and closing mechanism and component arrangement like the long member in this case, the bridge parts are mainly arranged near the central part in the longitudinal direction and near each end part in the longitudinal direction. In particular, the bridge parts are mainly arranged near each end part in the longitudinal direction of the long member. For this reason, in the left vertical frame 133, by arranging the bridge part 63 near the central part in the longitudinal direction of the first region A1 and particularly emphasizing the arrangement of the bridge part 63 in the second region A2 and the third region A3, it is considered that the strength of the left vertical frame 133 can be ensured efficiently.

[0089] Near the central part in the longitudinal direction of the first region A1, the first bar-shaped member 172 is arranged. Thereby, the strength near the central part in the longitudinal direction of the left vertical frame 133 can be improved. Near the upper end part of the second region A2, the second bar-shaped member 173 and the fourth bar-shaped member 175 are arranged. Thereby, the strength near the upper end part of the left vertical frame 133 can be particularly improved. Near the lower end part of the third region A3, the third bar-shaped member 174 and the fifth bar-shaped member 176 are arranged. Thereby, the strength near the lower end part of the left vertical frame 133 can be particularly improved. By these, the strength of the long member can be ensured efficiently. And the amount of material of the bridge part can be reduced.

[0090] The number of the outdoor side hole parts 148, 149 and the indoor side hole parts 158, 159 arranged in the first region A1 and inserted through each bar-shaped member 172, 173, 174, 175, 176 is smaller than the number of the outdoor side hole parts 148, 149 and the indoor side hole parts 158, 159 arranged in the second region A2 and inserted through each bar-shaped member 172, 173, 174, 175, 176.

[0091] In the first region A1, the smaller of the contact area between the rod-shaped member and the outdoor-side hole portion and the contact area between the rod-shaped member and the indoor-side hole portion is defined as the first contact area. In the second region A2, the smaller of the contact area between the rod-shaped member and the outdoor-side hole portion and the contact area between the rod-shaped member and the indoor-side hole portion is defined as the second contact area. In the third region A3, the smaller of the contact area between the rod-shaped member and the outdoor-side hole portion and the contact area between the rod-shaped member and the indoor-side hole portion is defined as the third contact area.

[0092] In the first region A1, when comparing the contact area between the first rod-shaped member 172 and the first outdoor-side hole portion 148 with the contact area between the first rod-shaped member 172 and the first indoor-side hole portion 158, the contact area between the first rod-shaped member 172 and the first outdoor-side hole portion 148 is smaller. Therefore, the first contact area is the contact area between the first rod-shaped member 172 and the first outdoor-side hole portion 148.

[0093] In the second region A2, when comparing the total value of the contact area between the second rod-shaped member 173 and the first outdoor-side hole portion 148 and the contact area between the fourth rod-shaped member 175 and the second outdoor-side hole portion 149 with the total value of the contact area between the second rod-shaped member 173 and the first indoor-side hole portion 158 and the contact area between the fourth rod-shaped member 175 and the second indoor-side hole portion 159, they are the same. Therefore, the second contact area is, for example, the total value of the contact area between the second rod-shaped member 173 and the first outdoor-side hole portion 148 and the contact area between the fourth rod-shaped member 175 and the second outdoor-side hole portion 149.

[0094] In the third region A3, when comparing the total value of the contact area between the third rod-shaped member 174 and the first outdoor-side hole portion 148 and the contact area between the fifth rod-shaped member 176 and the second outdoor-side hole portion 149 with the total value of the contact area between the third rod-shaped member 174 and the first indoor-side hole portion 158 and the contact area between the fifth rod-shaped member 176 and the second indoor-side hole portion 159, they are the same. Therefore, the third contact area is, for example, the total value of the contact area between the third rod-shaped member 174 and the first outdoor-side hole portion 148 and the contact area between the fifth rod-shaped member 176 and the second outdoor-side hole portion 149.

[0095] It is considered that the strength of the long member can be improved as the contact area between the rod-shaped member and the indoor side hole portion and the contact area between the rod-shaped member and the outdoor side hole portion increase. It is considered that the heat insulation performance of the long member can be improved as the contact area between the rod-shaped member and the indoor side hole portion and the contact area between the rod-shaped member and the outdoor side hole portion decrease.

[0096] The first contact area is smaller than the second contact area and the third contact area. Thereby, in the second region A2 and the third region A3, the second contact area and the third contact area can be increased to improve the strength of the long member, and in the first region A1, the first contact area can be decreased to improve the heat insulation performance of the long member.

[0097] The total mass of the bridge portion 171 arranged in the first region A1 (that is, the mass of the first rod-shaped member 172) is smaller than the total mass of the bridge portion 171 arranged in the second region (that is, the sum of the mass of the second rod-shaped member 173 and the mass of the fourth rod-shaped member 175). Further, the total mass of the bridge portion 171 arranged in the first region A1 is smaller than the total mass of the bridge portion 171 arranged in the third region A3 (that is, the sum of the mass of the third rod-shaped member 174 and the mass of the fifth rod-shaped member 176).

[0098] Thereby, in the second region A2 and the third region A3, the strength of the long member can be improved, and in the first region A1, the material amount of the bridge portion (rod-shaped member) can be reduced.

[0099] According to the sliding window 1 of this modified example, the following effects are obtained.

[0100] According to this modified example, the left vertical frame 133 has a cover member 164 attached to the indoor side of the indoor side frame portion 151.

[0101] Thereby, the design property of the long member viewed from the indoor side can be improved. Also, the strength of the long member can be improved.

[0102] According to this modification example, the first contact area is smaller than the second contact area. The first contact area is smaller than the third contact area.

[0103] In the left vertical frame 133, in the second region A2 and the third region A3 which are regions where particularly high strength is required, the second contact area and the third contact area are increased to improve the strength of the long member, and in the first region A1, the first contact area is reduced to improve the heat insulation performance of the left vertical frame 133. As a result, it is possible to more efficiently suppress heat transfer between the inside and outside while ensuring the strength of the long member. Therefore, it is possible to reduce the amount of material of the bridge portion while ensuring the strength and heat insulation performance of the long member.

[0104] According to this modification example, the total mass of the bridge portions 171 arranged in the first region A1 is smaller than the total mass of the bridge portions 171 arranged in the second region.

[0105] As a result, in the left vertical frame 133, in the second region A2 and the third region A3 which are regions where particularly high strength is required, the strength of the long member can be improved, and in the first region A1, the amount of material of the rod-shaped member can be reduced.

[0106] (Second Modification Example of the First Embodiment) Hereinafter, a second modification example of the first embodiment of the present disclosure will be described with reference to FIG. 8. The description will focus on the differences from the first modification example. For the same configurations as those in the first modification example, the same reference numerals will be given and the description will be omitted.

[0107] In the left vertical frame 233 of this modification example, the configuration and arrangement of the rod-shaped members are different from those in the first modification example. As shown in FIG. 8, the bridge portion 271 of this modification example includes a fourth rod-shaped member 175, a fifth rod-shaped member 176, a sixth rod-shaped member 272, and a seventh rod-shaped member 273.

[0108] The sixth rod-shaped member 272 and the seventh rod-shaped member 273 are each formed of a material having heat insulation properties, for example.

[0109] The longitudinal dimension of the sixth bar-shaped member 272 is substantially the same as the longitudinal dimension of the outdoor side frame portion 141. The sixth bar-shaped member 272 passes through all the first outdoor side holes 148 and all the first indoor side holes 158. Thereby, the configuration of the long member can be simplified and the strength of the long member can be improved.

[0110] In this way, a plurality of bar-shaped members do not have to be provided at intervals in the longitudinal direction. However, in terms of suitably suppressing heat transfer between indoors and outdoors and being able to reduce the amount of heat-insulating material used, it is preferable to adopt the configuration of the first modification.

[0111] The longitudinal dimension of the seventh bar-shaped member 273 is smaller than 1 / 3 of the longitudinal dimension of the left vertical frame 233, and for example, it is 1 / 5 of the longitudinal dimension of the left vertical frame 233.

[0112] The seventh bar-shaped member 273 is disposed in the first region A1. The seventh bar-shaped member 273 passes through those of the second outdoor side holes 149 and the second indoor side holes 159 that are located in the first region A1. Thereby, the strength of the first region A1 can be further improved. Note that a bar-shaped member may be further disposed in the first region A1. The bar-shaped member may pass through the first outdoor side holes 148 and the first indoor side holes 158. Thereby, the strength of the first region A1 can be further improved.

[0113] In this way, a plurality of bar-shaped members may be arranged side by side in a direction orthogonal to the longitudinal direction of the long member. In that case, the strength of the long member can be further improved.

[0114] As described above, the preferred embodiments of the present disclosure have been described. However, the present disclosure is not limited to the above-described embodiments and can be appropriately changed.

[0115] In each of the above embodiments, the left vertical frame of the outer shutter 3 has been described as an example. However, for the other frames constituting the outer shutter 3, each frame constituting the inner shutter 8, and each frame constituting the frame body 2, it is also possible to adopt configurations corresponding to those of the above embodiments respectively. Thereby, similar effects can be obtained also in those frames. Further, it is not necessarily the case that all of the frames of each shutter and all of the frames of the frame body have configurations corresponding to those of the above embodiments.

[0116] In each of the above embodiments, the fitting was a sliding window, but the type of the fitting is not particularly limited.

[0117] The number of outdoor side holes of the outdoor side extension piece of 1 and the number of indoor side holes of the indoor side extension piece of 1 are not limited to those of the above embodiments, and for example, three or more of each may be provided.

[0118] The configuration of the bridge portion is not limited to that of the above embodiment. The bridge portion may be configured to connect the outdoor side extension piece and the indoor side extension piece adjacent to the outdoor side extension piece in the longitudinal direction by snap fit. In that case, for example, the outdoor side extension piece has an outdoor side claw portion having a protruding shape. The indoor side extension piece has an indoor side claw portion having a protruding shape. The bridge portion has a joint member. The joint member connects the outdoor side claw portion and the indoor side claw portion by engaging with the outdoor side claw portion and the indoor side claw portion. It is preferable that the outdoor side claw portion and the indoor side claw portion are each formed to be elastically deformable. Note that the outdoor side claw portion and the indoor side claw portion may each have a convex portion, and the joint member may have a concave portion engageable with the convex portion, or the outdoor side claw portion and the indoor side claw portion may each have a concave portion, and the joint member may have a convex portion engageable with the concave portion.

[0119] Further, the bridge portion may have a clamping member such as a clip. The clamping member connects the outdoor side extension piece and the indoor side extension piece by clamping the outdoor side extension piece and the indoor side extension piece.

[0120] Further, the joint member and the clamping member are preferably formed of a heat-insulating member. Note that a plurality of types of bridge parts such as a rod-shaped member, a joint member, and a clamping member may be provided on one long member.

[0121] In the above embodiment, when dividing the long member in the longitudinal direction into a plurality of regions, the long member was divided into three equal parts, but it is not necessarily required to be equally divided. That is, the first region, the second region, and the third region do not necessarily have the same dimension in the longitudinal direction. The first region is set as a region including the central portion of the long member in the longitudinal direction, and the second region is preferably set as a region on one end side of the long member in the longitudinal direction with respect to the first region and including the end portion on the one end side. Further, the long member may be divided into two regions or four or more regions.

[0122] In the above embodiment, the first region and the second region were each set as a rectangular parallelepiped space, but the present invention is not limited thereto. However, the bottom areas of the first region and the second region are preferably the same. In that case, by comparing the values obtained by dividing the total mass of the bridge parts arranged in the region by the dimension of the region in the longitudinal direction, it is possible to easily compare the density of the bridge parts in each region.

[0123] [Aspect 1] A fitting provided at an opening of a building, comprising a sash configured by framing a long member which is either a frame body or a stile body, the long member including an outdoor frame portion formed of a metal material, an indoor frame portion provided on the indoor side of the outdoor frame portion and formed of a metal material, and a bridge portion provided between the outdoor frame portion and the indoor frame portion and connecting the outdoor frame portion and the indoor frame portion, wherein when the longitudinal direction of the long member is defined as the longitudinal direction, the outdoor frame portion has a plurality of outdoor extending pieces each extending indoors, the indoor frame portion has a plurality of indoor extending pieces each extending outdoors, and the bridge portion connects the outdoor extending piece and the indoor extending piece adjacent to the outdoor extending piece in the longitudinal direction. [Aspect 2] The bridge part has a rod-shaped member extending in the longitudinal direction, the outdoor side frame part has an outdoor side hole part, the indoor side frame part has an indoor side hole part, and the rod-shaped member passes through the outdoor side hole part and the indoor side hole part. The fitting according to Aspect 1. [Aspect 3] A plurality of the rod-shaped members are provided at intervals in the longitudinal direction. The fitting according to Aspect 2. [Aspect 4] The outdoor side extension piece and the indoor side extension piece are alternately arranged in the longitudinal direction. The fitting according to any one of Aspects 1 to 3. [Aspect 5] When the long member is divided into three equal parts in the longitudinal direction to form three regions, and among the three regions, the middle region is defined as the first region and one of the regions on each end side is defined as the second region, the total mass of the bridge parts arranged in the first region is smaller than the total mass of the bridge parts arranged in the second region. The fitting according to any one of Aspects 1 to 4. [Aspect 6] When the long member is divided into three equal parts in the longitudinal direction to form three regions, and among the three regions, the middle region is defined as the first region and one of the regions on each end side is defined as the second region, in the first region, the smaller of the contact area between the rod-shaped member and the outdoor side hole part and the contact area between the rod-shaped member and the indoor side hole part is defined as the first contact area, and in the second region, the smaller of the contact area between the rod-shaped member and the outdoor side hole part and the contact area between the rod-shaped member and the indoor side hole part is defined as the second contact area, the first contact area is smaller than the second contact area. The fitting according to any one of Aspects 2 to 5. [Aspect 7] The number of the outdoor side extension pieces and the indoor side extension pieces arranged in the first region is smaller than the number of the outdoor side extension pieces and the indoor side extension pieces arranged in the second region. The fitting according to any one of Aspects 1 to 6. [Aspect 8] The outdoor side hole part and the indoor side hole part adjacent to the outdoor side hole part are arranged at intervals. The fitting according to any one of Aspects 1 to 7. [Aspect 9] The long member has a cover member attached to the indoor side of the indoor side frame portion, and is the fitting according to any one of Aspects 1 to 8.

Explanation of Signs

[0124] 1: Sliding window (fitting), 2: Window frame (sash) 21: Upper frame (frame body and long member), 22: Lower frame (frame body and long member), 23: Vertical frame (frame body and long member), 31: Upper sill (sill body and long member), 32: Lower sill (sill body and long member), 33, 133, 233: Left vertical sill (sill body and long member), 34: Right vertical sill (sill body and long member), 41, 141: Outdoor side frame portion, 48: Outdoor side hole portion, 51, 151: Indoor side frame portion, 58: Indoor side hole portion, 71, 171, 271: Bridge portion, 72, 172: First rod-shaped member, 73, 173: Second rod-shaped member, 74, 174: Third rod-shaped member, 81: Upper sill (sill body and long member), 82: Lower sill (sill body and long member), 83: Vertical sill (sill body and long member), 100: Building, 101: Opening, 148: First outdoor side hole portion, 149: Second outdoor side hole portion, 158: First indoor side hole portion, 159: Second indoor side hole portion, 164: Cover member, 175: Fourth rod-shaped member, 176: Fifth rod-shaped member, 272: Sixth rod-shaped member, 273: Seventh rod-shaped member.

Claims

1. A fitting provided at an opening of a building, comprising a sash formed by framing a long member which is either a frame body or a mullion, wherein the long member has an outdoor side frame portion formed of a metal material, an indoor side frame portion provided on the indoor side of the outdoor side frame portion and formed of a metal material, and a bridge portion provided between the outdoor side frame portion and the indoor side frame portion for connecting the outdoor side frame portion and the indoor side frame portion; when the longitudinal direction of the long member is defined as the long dimension direction, the outdoor side frame portion has a plurality of outdoor side extending pieces each extending toward the indoor side; the indoor side frame portion has a plurality of indoor side extending pieces each extending toward the outdoor side; and the bridge portion connects the outdoor side extending piece and the indoor side extending piece adjacent to the outdoor side extending piece in the long dimension direction.

2. The bridge portion has a rod-shaped member extending in the long dimension direction; the outdoor side frame portion has an outdoor side hole portion; the indoor side frame portion has an indoor side hole portion; and the rod-shaped member passes through the outdoor side hole portion and the indoor side hole portion. The fitting according to claim 1.

3. A plurality of the rod-shaped members are provided at intervals in the long dimension direction. The fitting according to claim 2.

4. The outdoor side extending piece and the indoor side extending piece are alternately arranged in the long dimension direction. The fitting according to any one of claims 1 to 3.

5. When the long member is divided into three regions by equally dividing it in the long dimension direction, and when the middle region among the three regions is defined as the first region and one of the regions at each end side is defined as the second region, the total mass of the bridge portions arranged in the first region is smaller than the total mass of the bridge portions arranged in the second region. The fitting according to any one of claims 1 to 3.

6. When the long member is divided into three regions by equally dividing it in the long dimension direction, and when the middle region among the three regions is defined as the first region and one of the regions at each end side is defined as the second region, in the first region, the smaller one of the contact area between the rod-shaped member and the outdoor side hole portion and the contact area between the rod-shaped member and the indoor side hole portion is defined as the first contact area; in the second region, when the smaller one of the contact area between the rod-shaped member and the outdoor side hole portion and the contact area between the rod-shaped member and the indoor side hole portion is defined as the second contact area, ​ The building fixture according to claim 2 or 3, wherein the first contact area is smaller than the second contact area.

7. The building fixture according to claim 6, wherein the number of the outdoor extension pieces and the indoor extension pieces arranged in the first region is smaller than the number of the outdoor extension pieces and the indoor extension pieces arranged in the second region.

8. The building fixture according to any one of claims 2 or 3, wherein the outdoor side hole portion and the indoor side hole portion adjacent to the outdoor side hole portion are arranged at an interval.

9. The building fixture according to any one of claims 1 to 3, wherein the long member has a cover member attached to the indoor side of the indoor side frame portion.

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