以下、本発明の実施の形態を図面に基づいて説明する。なお、以下において左右とは、サッシを室外側から見たときの左右を示すものとする。このサッシの第一実施形態は、上枠と、下枠１０と、左右の縦枠２０とを四周枠組みした枠体に、二枚の障子（外障子４ａと内障子４ｂ）を引違いに納めた引違い窓を構成する。これらの障子を閉鎖した際、外障子４ａは右側、内障子４ｂは左側に位置する。そして、下枠１０は、左右の縦枠２０と枠組みした下枠本体１と、下枠本体１の上面に取り付けた下枠補助材２とを備えている。下枠補助材２の上面は略フラットに形成されており、つまずきなどを防いだバリアフリータイプのものとなっている。以下、下枠１０の構成について詳述する。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, left and right indicate left and right when the sash is viewed from the outdoor side. In the first embodiment of the sash, two shojis (external pouch 4a and pouch 4b) are placed in a frame with a four-frame frame consisting of an upper frame, a lower frame 10, and left and right vertical frames 20. Construct a sliding window. When these shojis are closed, the outer shoji 4a is located on the right side and the inner shoji 4b is located on the left side. The lower frame 10 includes a lower frame body 1 that is framed with the left and right vertical frames 20, and a lower frame auxiliary material 2 that is attached to the upper surface of the lower frame body 1. The upper surface of the lower frame auxiliary material 2 is formed to be substantially flat, and is a barrier-free type that prevents tripping and the like. Hereinafter, the configuration of the lower frame 10 will be described in detail.
下枠本体１は、アルミ形材からなるものであり、図３及び図４に示すように、本体上側面部１１と、本体ホロー部１２と、起立片１３と、網戸レール１４とを備える。本体上側面部１１は、室内外に延び、室外側に向けて緩やかに下方に傾斜している。そして、本体ホロー部１２は、本体上側面部１１の下側に形成した断面略矩形の空隙である。その室外側端は本体上側面部１１の室外側端に一致し、室内側端は本体上側面部１１の室内外中央部に位置しており、本体上側面部１１もその一部（上側面）を構成する。また、起立片１３は、本体上側面部１１の室内側端から垂直上方に延びている。さらに、網戸レール１４は、本体ホロー部１２の室外側面に形成してあり、断面略Ｌ字形である。そして、図４に示すように、本体ホロー部１２の上側面（本体上側面部１１）には、本体上面排水孔１５を形成してあり、本体ホロー部１２の室外側面には、本体正面排水孔１６を形成してある。本体上面排水孔１５と本体正面排水孔１６は、何れも略矩形の貫通孔であって、それぞれ左右方向に複数個形成してある。なお、本体正面排水孔１６には開閉弁（図示省略）を取り付けてあり、本体ホロー部１２及びそれに連通する空隙を室内圧に維持して、効率的に排水できるようにしてある。
The lower frame main body 1 is made of an aluminum profile, and includes a main body upper side surface portion 11, a main body hollow portion 12, an upright piece 13, and a screen door rail 14 as shown in FIGS. 3 and 4. The main body upper side surface portion 11 extends outside the room and is gently inclined downward toward the outside of the room. The main body hollow portion 12 is a gap having a substantially rectangular cross section formed on the lower side of the main body upper side surface portion 11. The outdoor side end coincides with the outdoor side end of the main body upper side surface portion 11, the indoor side end is located at the indoor / outdoor central portion of the main body upper side surface portion 11, and the main body upper side surface portion 11 is also a part (upper surface). ). Further, the upright piece 13 extends vertically upward from the indoor side end of the main body upper side surface portion 11. Furthermore, the screen door rail 14 is formed in the outdoor side surface of the main body hollow part 12, and has a substantially L-shaped cross section. As shown in FIG. 4, a main body upper surface drain hole 15 is formed on the upper side surface (main body upper side surface portion 11) of the main body hollow portion 12, and the main body front surface drainage is formed on the outdoor side surface of the main body hollow portion 12. A hole 16 is formed. The main body upper surface drain hole 15 and the main body front drain hole 16 are both substantially rectangular through holes, and a plurality of the main body upper surface drain hole 15 and the main body front surface drain hole 16 are formed in the left-right direction. An opening / closing valve (not shown) is attached to the main body front drain hole 16 so that the main body hollow portion 12 and the gap communicating therewith are maintained at room pressure so that drainage can be performed efficiently.
次に、下枠補助材２は、樹脂からなるものである。図３及び図５に示すように、上面には、室外側の外上側面部２１ａと、室内側の内上側面部２１ｂが形成されており、外上側面部２１ａの室外側には外溝２６ａが、外上側面部２１ａと内上側面部２１ｂの間には内溝２６ｂが、内上側面部２１ｂの室内側にはアングル片２１ｃが形成されている。外上側面部２１ａは、室内外に延び、室外側部分は略水平で、室内側部分は室内側に向けて緩やかに下方に傾斜している。一方、内上側面部２１ｂは、室内外に伸び、室外側部分は略水平で、室内側部分は室外側に向けて緩やかに下方に傾斜している。そして、外溝２６ａ及び内溝２６ｂは、何れも上向きに開口する断面略Ｕ字形の溝である。また、アングル片２１ｃは、室内側に向けて水平向きに延出している。さらに、外上側面部２１ａの室外側の水平部分と、内上側面部２１ｂの室外側の水平部分には、それぞれ外レール２２ａと内レール２２ｂが形成してある。外レール２２ａ及び内レール２２ｂは、何れも上向きに突出するものであって、曲線的に微小隆起した形状である。このように、外上側面部２１ａ及び内上側面部２１ｂが水平面又は緩やかな傾斜面となっており、また外レール２２ａ及び内レール２２ｂは微小隆起した形状であるから、下枠補助材２（外上側面部２１ａ及び内上側面部２１ｂ）の上面は、略フラットであるといえる。
Next, the lower frame auxiliary material 2 is made of resin. As shown in FIGS. 3 and 5, an outer upper outer side surface portion 21 a and an indoor inner inner upper side surface portion 21 b are formed on the upper surface, and an outer groove is formed on the outer side of the outer upper side surface portion 21 a. 26a, an inner groove 26b is formed between the outer upper side surface portion 21a and the inner upper side surface portion 21b, and an angle piece 21c is formed on the indoor side of the inner upper side surface portion 21b. The outer upper side surface portion 21a extends outside the room, the outdoor side portion is substantially horizontal, and the indoor side portion is gently inclined downward toward the indoor side. On the other hand, the inner upper side surface portion 21b extends indoors and outdoors, the outdoor side portion is substantially horizontal, and the indoor side portion is gently inclined downward toward the outdoor side. Each of the outer groove 26a and the inner groove 26b is a groove having a substantially U-shaped cross section that opens upward. The angle piece 21c extends horizontally toward the indoor side. Further, an outer rail 22a and an inner rail 22b are formed on the outer horizontal portion of the outer upper side surface portion 21a and the outer horizontal portion of the inner upper side surface portion 21b, respectively. Each of the outer rail 22a and the inner rail 22b protrudes upward and has a curvilinearly raised shape. Thus, since the outer upper side surface portion 21a and the inner upper side surface portion 21b are horizontal surfaces or gently inclined surfaces, and the outer rail 22a and the inner rail 22b have a slightly raised shape, the lower frame auxiliary material 2 ( It can be said that the upper surfaces of the outer upper side surface portion 21a and the inner upper side surface portion 21b) are substantially flat.
また、内レール２２ｂの下側には、略垂直向きの壁面部２４を形成してある。壁面部２４は、下枠補助材２の内上側面部２１ｂから、下枠本体１の本体上側面部１１まで延びるものである。さらに、内上側面部２１ｂを上側面、壁面部２４を室外側面として、略矩形の内ホロー部２３ｂを形成してある。内ホロー部２３ｂの下側面は、下枠本体１の本体上側面部１１に当接しており、内ホロー部２３ｂの室内側面は、下枠本体１の起立片１３に近接して対向している。また、外レール２２ａの下側には、外ホロー部２３ａを形成してある。外ホロー部２３ａは、外上側面部２１ａの水平部分を上側面として、室外側部分は外溝２６ａの下側に回り込むように形成してあり、下側面は下枠本体１の本体上側面部１１に当接しており、室外側面は下枠補助材２の室外側端に位置している。なお、外ホロー部２３ａと内ホロー部２３ｂの間には、外上側面部２１ａ及び内溝２６ｂを上側面、下枠本体１の本体上側面部１１を下側面として、中間空隙部２３ｃが形成される。下枠本体１の本体上面排水孔１５は、中間空隙部２３ｃに連通している。そして、内レール２２ｂの室内側、すなわち内上側面部２１ｂの水平部分には、上面排水孔２５ａが形成してあり、上面排水孔２５ａは内ホロー部２３ｂに連通している。また、内ホロー部２３ｂの室外側下端部には、下部排水孔２５ｂが形成してあり、中間空隙部２３ｃに連通している。よって、内上側面部２１ｂから、上面排水孔２５ａ、内ホロー部２３ｂ、下部排水孔２５ｂ、中間空隙部２３ｃ、本体上面排水孔１５、本体ホロー部１２及び本体正面排水孔１６を経由して室外側に連通する排水経路が形成される。さらに、外溝２６ａの底部には外溝排水孔２５ｃが形成してあり、外ホロー部２３ａに連通している。また、内溝２６ｂの底部には内溝排水孔２５ｄが形成してあり、中間空隙部２３ｃに連通している。さらに、外ホロー部２３ａの室外側面には正面排水孔２５ｅが形成してあり、室外側と連通している。これらの排水孔は、何れも左右方向に複数個形成してある。ただし、内溝排水孔２５ｄは、下枠補助材２の中央より右側部分のみに形成してある。そして、内溝２６ｂの中央には閉止部材（図示省略）を挿入してあって、内溝２６ｂを左右に遮断している。
Further, a substantially vertical wall surface 24 is formed below the inner rail 22b. The wall surface portion 24 extends from the inner upper side surface portion 21 b of the lower frame auxiliary material 2 to the main body upper side surface portion 11 of the lower frame main body 1. Further, a substantially rectangular inner hollow portion 23b is formed with the inner upper side surface portion 21b as the upper side surface and the wall surface portion 24 as the outdoor side surface. The lower side surface of the inner hollow portion 23 b is in contact with the upper body side surface portion 11 of the lower frame main body 1, and the indoor side surface of the inner hollow portion 23 b is opposed to the upright piece 13 of the lower frame main body 1. . An outer hollow portion 23a is formed below the outer rail 22a. The outer hollow portion 23a is formed so that the horizontal portion of the outer upper side surface portion 21a is the upper side surface, and the outdoor side portion wraps around the lower side of the outer groove 26a, and the lower side surface is the upper body side surface portion of the lower frame main body 1. 11, the outdoor side surface is located at the outdoor side end of the lower frame auxiliary material 2. An intermediate gap portion 23c is formed between the outer hollow portion 23a and the inner hollow portion 23b with the outer upper side surface portion 21a and the inner groove 26b as the upper side surface and the main body upper side surface portion 11 of the lower frame main body 1 as the lower side surface. Is done. The main body upper surface drain hole 15 of the lower frame main body 1 communicates with the intermediate gap 23c. An upper surface drain hole 25a is formed on the indoor side of the inner rail 22b, that is, a horizontal portion of the inner upper side surface portion 21b, and the upper surface drain hole 25a communicates with the inner hollow portion 23b. Further, a lower drain hole 25b is formed in the lower end on the outdoor side of the inner hollow portion 23b and communicates with the intermediate gap portion 23c. Therefore, from the inner upper side surface portion 21b, the chamber passes through the upper surface drain hole 25a, the inner hollow portion 23b, the lower drain hole 25b, the intermediate gap portion 23c, the main body upper surface drain hole 15, the main body hollow portion 12, and the main body front drain hole 16. A drainage path communicating with the outside is formed. Further, an outer groove drain hole 25c is formed at the bottom of the outer groove 26a and communicates with the outer hollow portion 23a. An inner groove drain hole 25d is formed at the bottom of the inner groove 26b, and communicates with the intermediate gap 23c. Further, a front drain hole 25e is formed on the outdoor side surface of the outer hollow portion 23a and communicates with the outdoor side. A plurality of these drain holes are formed in the left-right direction. However, the inner groove drain hole 25d is formed only on the right side portion from the center of the lower frame auxiliary material 2. A closing member (not shown) is inserted in the center of the inner groove 26b to block the inner groove 26b to the left and right.
さらに、図５（ｂ）に示すように、下枠補助材２の左右の端面５は、上側から下側に向けて左右方向中央側へ約４５度傾斜している。より詳しくは、左右の端面５の上端のわずかな部分は垂直であって、その下側部分全体が傾斜している。この垂直部分の下端は、外上側面部２１ａの室内側端の高さに合わせたものである。外上側面部２１ａの室内側端は、外上側面部２１ａ及び内上側面部２１ｂの中で最も低い箇所であり、すなわち、外上側面部２１ａと内上側面部２１ｂの左右の端面５はすべて垂直に形成されていて、その下側が傾斜しているということである。このようにしたのは、下枠補助材２の最上端部から端面５を傾斜させると、外上側面部２１ａや内上側面部２１ｂの低い部分では左右端が中央側に食い込んでしまうので、隙間を生じて気密性・水密性が低下し、また意匠性も損なわれるからである。
Further, as shown in FIG. 5B, the left and right end surfaces 5 of the lower frame auxiliary member 2 are inclined by about 45 degrees from the upper side to the lower side toward the center in the left-right direction. More specifically, a slight portion of the upper ends of the left and right end surfaces 5 is vertical, and the entire lower portion thereof is inclined. The lower end of the vertical portion is set to the height of the indoor side end of the outer upper side surface portion 21a. The indoor side end of the outer upper side surface portion 21a is the lowest point among the outer upper side surface portion 21a and the inner upper side surface portion 21b, that is, the left and right end surfaces 5 of the outer upper side surface portion 21a and the inner upper side surface portion 21b are It is all formed vertically and its lower side is inclined. The reason for this is that when the end surface 5 is inclined from the uppermost end of the lower frame auxiliary material 2, the left and right ends of the lower part of the outer upper side part 21a and the inner upper side part 21b bite into the center side. This is because gaps are formed, the airtightness and watertightness are lowered, and the design is also impaired.
そして、図３に示すように、外レール２２ａ及び内レール２２ｂの上を、それぞれ外障子４ａと内障子４ｂの戸車４１ａ，４１ｂが走行する。なお、外障子４ａと内障子４ｂは、何れも室外側下端部から下方に延びる垂下片４２ａ，４２ｂを有しており、外障子４ａの垂下片４２ａが外溝２６ａに挿入されており、内障子４ｂの垂下片４２ｂが内溝２６ｂに挿入されている。そして、外溝２６ａ内の室内側面及び内溝２６ｂ内の室外側面と室内側面にはタイト材２７が取り付けてあって、各タイト材２７は垂下片４２ａ，４２ｂに当接しており、室内外を遮断して気密性・水密性を確保している。
And as shown in FIG. 3, the doors 41a and 41b of the external shoji 4a and the internal shoji 4b run on the outer rail 22a and the inner rail 22b, respectively. Each of the outer shoji 4a and the inner shoji 4b has hanging pieces 42a and 42b extending downward from the lower end of the outdoor side, and the hanging piece 42a of the outer shoji 4a is inserted into the outer groove 26a. The hanging piece 42b of the shoji 4b is inserted into the inner groove 26b. Tight materials 27 are attached to the indoor side surface in the outer groove 26a, the outdoor side surface and the indoor side surface in the inner groove 26b, and each tight material 27 is in contact with the hanging pieces 42a and 42b, Shut off to ensure airtightness and watertightness.
さらに、図１及び図２に示すように、下枠補助材２の左右両端と、左右の縦枠２０の間には、それぞれ樹脂製の端部部品３を設けてある（図１及び図２は右側端について図示）。図６に示すように、端部部品３（右側端に取り付けるもの）は、ブロック状のもので、左側面が、上側から下側に向けて左右方向中央側へ約４５度傾斜しており、この面が下枠補助材２の端面５と当接する当接面６となっている。ただし、当接面６の上端部は、下枠補助材２の端面５に対応して垂直に形成されている。そして、当接面６には、中間空隙部２３ｃに挿入して係合する突起３１を形成してある。突起３１は、下枠補助材２の外上側面部２１ａに対応して、上面が室内側に向けて下方に傾斜している。また、端部部品３は、縦枠２０の内周側面に当接している。ここで、縦枠２０の内周側面には、外障子４ａ又は内障子４ｂの戸当り框に対向して内周側に突出する突条２０ａが形成されているが、この突条２０ａの下端部は切除されており、切除部に端部部品３が納まっている。また、端部部品３の上面の左右方向幅（Ｌ１）は、突条２０ａの突出長さ（Ｌ２）よりも長くなっており、端部部品３の上面には、上面と同じ左右方向幅で上向きに突出する突出片３５を形成してあって、突出片３５に突条２０ａの下端部が当接している。そして、端部部品３は、その当接面６によって、下枠補助材２の外ホロー部２３ａ及び中間空隙部２３ｃの右端を塞いでいる。また、室内側には、内ホロー部２３ｂと連通する内ホロー部連通部３２を形成してあり、内ホロー部連通部３２は、略Ｕ字形状で上側に開口している。さらに、室内外中央部には、内溝２６ｂに連通する内溝連通部３３を形成してあり、内溝連通部３３は、略Ｕ字形状で上側に開口している。また、室外側には、外溝２６ａと連通する外溝連通部３４を形成してあり、外溝連通部３４は上側、右側及び室外側に開口している。ただし、外溝連通部３４の右側には縦枠２０の内周側面が位置しているので、外溝連通部３４は外溝２６ａから室外側へ至る排水経路となっている。なお、下枠補助材２の左側端に取り付ける端部部品は、上記の右側端に取り付ける端部部品３と略左右対称のものである。ただし、下枠補助材２の外溝２６ａを塞ぐものである点と、内溝連通部が室外側に開口していて、内溝２６ｂから室外側へ至る排水経路が形成されている点が異なる。
Further, as shown in FIGS. 1 and 2, resin end parts 3 are provided between the left and right ends of the lower frame auxiliary material 2 and the left and right vertical frames 20, respectively (FIGS. 1 and 2). Is shown on the right side). As shown in FIG. 6, the end part 3 (attached to the right end) is in a block shape, and the left side surface is inclined about 45 degrees from the upper side to the lower side toward the center in the left-right direction. This surface is a contact surface 6 that contacts the end surface 5 of the lower frame auxiliary member 2. However, the upper end portion of the contact surface 6 is formed vertically corresponding to the end surface 5 of the lower frame auxiliary material 2. The contact surface 6 is formed with a protrusion 31 that is inserted into and engaged with the intermediate gap 23c. The upper surface of the protrusion 31 is inclined downward toward the indoor side, corresponding to the outer upper side surface portion 21a of the lower frame auxiliary member 2. The end part 3 is in contact with the inner peripheral side surface of the vertical frame 20. Here, on the inner peripheral side surface of the vertical frame 20, a ridge 20a is formed that protrudes toward the inner periphery facing the door ridge of the outer shoji 4a or the inner shoji 4b. The lower end of the ridge 20a The part is cut off, and the end part 3 is housed in the cut part. Further, the lateral width (L 1 ) of the upper surface of the end part 3 is longer than the protruding length (L 2 ) of the protrusion 20a, and the upper surface of the end part 3 has the same lateral direction as the upper surface. A protruding piece 35 that protrudes upward in width is formed, and the lower end portion of the protrusion 20 a is in contact with the protruding piece 35. The end part 3 closes the right end of the outer hollow part 23a and the intermediate gap part 23c of the lower frame auxiliary material 2 by the contact surface 6 thereof. In addition, an inner hollow portion communication portion 32 communicating with the inner hollow portion 23b is formed on the indoor side, and the inner hollow portion communication portion 32 is substantially U-shaped and opens upward. Further, an inner groove communication portion 33 communicating with the inner groove 26b is formed in the indoor / outdoor central portion, and the inner groove communication portion 33 is substantially U-shaped and opens upward. Further, an outer groove communication portion 34 communicating with the outer groove 26a is formed on the outdoor side, and the outer groove communication portion 34 opens on the upper side, the right side, and the outdoor side. However, since the inner peripheral side surface of the vertical frame 20 is located on the right side of the outer groove communication portion 34, the outer groove communication portion 34 is a drainage path from the outer groove 26a to the outdoor side. Note that the end part attached to the left end of the lower frame auxiliary member 2 is substantially bilaterally symmetric with the end part 3 attached to the right end. However, the difference is that the outer groove 26a of the lower frame auxiliary material 2 is closed, and the inner groove communication portion is open to the outdoor side, and a drainage path from the inner groove 26b to the outdoor side is formed. .
このように構成した下枠補助材２及び端部部品３を下枠本体１に取り付ける際には、図７に示すように、まず、端部部品３をそれぞれ左右の縦枠２０に当接させて設置する。続いて、下枠補助材２の一方の端面５（図では左側の端面５）の垂直部分を、一方の端部部品３の当接面６の垂直部分に当接させる。この際、下枠補助材２の外上側面部２１ａを突起３１に係合させることで、正確に位置決めできる。そして、この当接部分を回転中心として下枠補助材２を回転させて、他方の端部を他方の端部部品３に上側から近づける。そのまま下枠補助材２が水平向きになる位置まで回転させると、端部部品３の当接面６が下枠補助材２の左右の端面５にそれぞれ当接し、突起３１が中間空隙部２３ｃに挿入される。そして、上面から下枠補助材２を端部部品３にネジ止め（図示省略）し、さらにアングル片２１ｃを躯体にネジ止めして、下枠補助材２が固定される。ここで、端部部品３は樹脂製であるから、ネジを受けるために金属製のナット片を挿入してある。一方、下枠補助材２を下枠本体１から取り外す際には、ネジを外して、取付時とは逆に動かせばよい。
When attaching the lower frame auxiliary material 2 and the end part component 3 configured as described above to the lower frame main body 1, first, as shown in FIG. 7, the end part component 3 is first brought into contact with the left and right vertical frames 20. Install. Subsequently, the vertical portion of one end surface 5 (left end surface 5 in the drawing) of the lower frame auxiliary member 2 is brought into contact with the vertical portion of the contact surface 6 of the one end part 3. At this time, the outer upper side surface portion 21 a of the lower frame auxiliary member 2 can be accurately positioned by engaging the protrusion 31. Then, the lower frame auxiliary material 2 is rotated with the contact portion as a rotation center, and the other end portion is brought close to the other end portion component 3 from above. If the lower frame auxiliary material 2 is rotated as it is to the horizontal position as it is, the contact surfaces 6 of the end part parts 3 come into contact with the left and right end surfaces 5 of the lower frame auxiliary material 2, respectively, and the protrusions 31 enter the intermediate gap 23c. Inserted. Then, the lower frame auxiliary material 2 is fixed by screwing the lower frame auxiliary material 2 to the end part 3 from the upper surface (not shown) and further screwing the angle piece 21c to the housing. Here, since the end part 3 is made of resin, a metal nut piece is inserted to receive the screw. On the other hand, when removing the lower frame auxiliary material 2 from the lower frame main body 1, the screw may be removed and moved in the reverse direction to the attachment.
なお、端部部品３の下側面と外周側面には一連のパッキンを取り付けてあり、それぞれ端部部品３と下枠本体１の上面及び端部部品３と縦枠２０の内周側面の間を密封している。また、端部部品３の当接面６にもパッキンを取り付けてあり、端部部品３と下枠補助材２の間を密封している。さらに、端部部品３の室内側面にもパッキンを取り付けてある。このパッキンは、縦枠２０の室内側端のアングル片２０ｂ（図２）の下端と、下枠本体１の室内側端の起立片１３の上端との金属同士の接触部に、室外側から当接して、縦枠２０のアングル片２０ｂの下端から室内側へ躯体内漏水が生じることを防ぐものである。
A series of packings are attached to the lower side surface and the outer peripheral side surface of the end part 3, and the end part 3 and the upper surface of the lower frame main body 1 and between the end part 3 and the inner peripheral side surface of the vertical frame 20, respectively. Sealed. Further, a packing is also attached to the contact surface 6 of the end part 3 to seal between the end part 3 and the lower frame auxiliary material 2. Furthermore, packing is also attached to the indoor side surface of the end part 3. This packing is applied to the metal contact portion between the lower end of the angle piece 20b (FIG. 2) at the indoor end of the vertical frame 20 and the upper end of the upright piece 13 at the indoor end of the lower frame body 1 from the outdoor side. In contact therewith, leakage of the enclosure from the lower end of the angle piece 20b of the vertical frame 20 to the indoor side is prevented.
このように、第一実施形態においては、下枠補助材２の一端を端部部品３に当接させた上で、上側から回転させて着脱するので、下枠補助材２が左右に動くことがなく、下枠補助材２の端部が縦枠２０の内周側面に接触することを回避できる。ここで、下枠補助材２を回転させて着脱可能となったのは、下枠補助材２の端面５を上側から下側に向けて左右方向中央側へ傾斜させたからである。もし端面が垂直であれば、一端の上部を回転中心とした際に、他端の下部が端部部品３に食い込んで当接面６を傷付けたり、当接面６に取り付けたパッキンを削り取ったりしてしまうが、傾斜によりこの食い込みを回避したものであり、当接面６に取り付けたパッキンも適切に密着させて隙間を密封できる。なお、端面５の上端部には垂直部分が形成されているが、取り付け状態において回転中心と高さが略一致するわずかな部分であるから、食い込むことはなく取り付けには影響しない。また、下枠補助材２の端面５が垂直である場合、下枠補助材２を着脱可能とするためには、左右の縦枠２０の間隔よりも下枠補助材２を短くして、ある程度のクリアランスを設けることが必要であったが、第一実施形態のように下枠補助材２を回転させて取り付けるようにすると、クリアランスが不要となり、さらに、端部部品３の当接面６を下枠補助材２の端面５に対向して傾斜させてあるので、下枠補助材２の端面５と端部部品３の当接面６とを密着させることができ、この部分の気密性・水密性が向上する。そして、端部部品３は縦枠２０に当接させて設置するものであるから、縦枠２０と端部部品３、及び端部部品３と下枠補助材２とを密着させて一連のものとすることができる。さらに、端部部品３の上面の突出片３５に突条２０ａの下端部が当接しているので、縦枠２０の突条２０ａの下端部から下枠補助材２までが端部部品３により隙間なく連続して、気密・水密が維持される。
Thus, in the first embodiment, the lower frame auxiliary material 2 moves left and right because one end of the lower frame auxiliary material 2 is brought into contact with the end part 3 and then rotated and detached from the upper side. Therefore, it is possible to avoid the end of the lower frame auxiliary material 2 from contacting the inner peripheral side surface of the vertical frame 20. Here, the reason why the lower frame auxiliary member 2 is rotated and becomes detachable is that the end surface 5 of the lower frame auxiliary member 2 is inclined from the upper side to the lower side toward the center in the left-right direction. If the end surface is vertical, when the upper end of one end is the center of rotation, the lower end of the other end bites into the end part 3 and scratches the contact surface 6 or scrapes the packing attached to the contact surface 6. However, this biting is avoided by the inclination, and the packing attached to the contact surface 6 can also be brought into close contact appropriately to seal the gap. In addition, although the vertical part is formed in the upper end part of the end surface 5, since it is a slight part whose height substantially coincides with the rotation center in the attached state, it does not bite and does not affect the attachment. In addition, when the end surface 5 of the lower frame auxiliary material 2 is vertical, in order to make the lower frame auxiliary material 2 detachable, the lower frame auxiliary material 2 is made shorter than the distance between the left and right vertical frames 20 to some extent. However, if the lower frame auxiliary material 2 is rotated and attached as in the first embodiment, the clearance becomes unnecessary, and the contact surface 6 of the end part 3 is further reduced. Since it is inclined to face the end surface 5 of the lower frame auxiliary material 2, the end surface 5 of the lower frame auxiliary material 2 and the contact surface 6 of the end part 3 can be brought into close contact with each other. Water tightness is improved. Since the end part 3 is installed in contact with the vertical frame 20, the vertical frame 20 and the end part 3, and the end part 3 and the lower frame auxiliary material 2 are in close contact with each other. It can be. Further, since the lower end portion of the protrusion 20 a is in contact with the protruding piece 35 on the upper surface of the end part 3, the end part 3 has a gap between the lower end of the protrusion 20 a of the vertical frame 20 and the lower frame auxiliary material 2. Airtight and watertight are maintained continuously.
さらに、端部部品３の上面の左右方向幅を、縦枠２０の突条２０ａの突出長さよりも長くしたことにより、左右の端部部品３の間に納まる下枠補助材２は、縦枠２０の突条２０ａに干渉することがない。従来、この干渉を避けるために下枠補助材を見込方向に複数に分割しており、分割された部材同士の隙間からホコリや砂が入り込んで下枠本体の上面にたまってしまい、清掃に手間がかかることが問題であった。しかし、第一実施形態では、見込方向に一体の下枠補助材２を取り付けることができるので、下枠本体１にホコリや砂がたまることはなく、清掃が極めて容易である。また、下枠補助材２と突条２０ａとの干渉がなくなることで、下枠補助材２を左右方向にも一体の部材とすることが可能となり、部品点数を減らして安価に製品を提供できる。さらに、下枠補助材２の左右の端面５及びこれに対向する端部部品３の当接面６について、左右対称に傾斜させたことにより、左右のどちら側でも、都合のよい方を回転中心として下枠補助材２を着脱できる。なお、下枠本体１に対して下枠補助材２を上側から取り付けるものであって、室内外方向に動かす必要はないから、下枠本体１の上面に立ち上がり部分がある場合にも、下枠補助材２の着脱が可能である。
Further, the width of the upper surface of the end part 3 in the left-right direction is made longer than the protruding length of the protrusion 20a of the vertical frame 20, so that the lower frame auxiliary material 2 that fits between the left and right end parts 3 is There is no interference with the 20 ridges 20a. Conventionally, in order to avoid this interference, the lower frame auxiliary material is divided into multiple parts in the expected direction, and dust and sand enter from the gaps between the divided members and accumulate on the upper surface of the lower frame main body, which is troublesome to clean. It was a problem to take. However, in the first embodiment, since the integrated lower frame auxiliary material 2 can be attached in the expected direction, dust and sand do not accumulate in the lower frame main body 1, and cleaning is extremely easy. Further, since the interference between the lower frame auxiliary material 2 and the protrusions 20a is eliminated, the lower frame auxiliary material 2 can be an integral member in the left and right direction, and the product can be provided at a low cost by reducing the number of parts. . Further, the right and left end surfaces 5 of the lower frame auxiliary member 2 and the contact surfaces 6 of the end parts 3 facing the lower end auxiliary material 2 are inclined symmetrically so that the convenient center of rotation on either the left or right side is provided. The lower frame auxiliary material 2 can be attached and detached. The lower frame auxiliary material 2 is attached to the lower frame main body 1 from the upper side and does not need to be moved indoors or outdoors. Therefore, even when there is a rising portion on the upper surface of the lower frame main body 1, the lower frame The auxiliary material 2 can be attached and detached.
次に、図３に基づき、この下枠１０の上面に生じた水（結露水や、室外側から吹き込む雨水など）の排水経路について説明する。なお、図３はサッシの右側部分における断面を示したものである。ただし、本来サッシの左側に位置する内障子４ｂや、本来左右方向位置が異なる各排水孔２５ａ〜２５ｅのすべてを、一つの図面に模式的に示してある。まず、内レール２２ｂの室内側に生じた水は、内上側面部２１ｂの傾斜に沿って室外側へ流れ、内レール２２ｂの室内側に形成した上面排水孔２５ａへと流れ落ちる。そして水は、上面排水孔２５ａから、内ホロー部２３ｂ、下部排水孔２５ｂ、中間空隙部２３ｃ、本体上面排水孔１５、本体ホロー部１２及び本体正面排水孔１６を経由して室外側に排水される（Ａ矢印）。また、外レール２２ａと内レール２２ｂの間に生じた水は、サッシの左右で排水経路が異なる。サッシの右側、すなわち外障子４ａの室内側に生じた水は、外上側面部２１ａの傾斜に沿って室内側へ流れ、内溝２６ｂに流入し、内溝２６ｂの底部に形成した内溝排水孔２５ｄに流れ落ちる。そして水は、内溝排水孔２５ｄから、中間空隙部２３ｃ、本体上面排水孔１５、本体ホロー部１２及び本体正面排水孔１６を経由して室外側に排水される（Ｂ矢印）。一方、サッシの左側、すなわち内障子４ｂの室外側に生じた水は、外上側面部２１ａの傾斜に沿って室内側へ流れ、内溝２６ｂに流入し、内溝２６ｂの左端から左側の端部部品の内溝連通部を経由して室外側に排水される。さらに、外レール２２ａの室外側に生じた水は、外溝２６ａに流入し、外溝２６ａの底部に形成した外溝排水孔２５ｃに流れ落ちる。そして水は、外溝排水孔２５ｃから、外ホロー部２３ａ及び正面排水孔２５ｅを経由して室外側に排水される（Ｃ矢印）。また、水量が多い場合には、外溝２６ａの右端から右側の端部部品３の外溝連通部３４を経由して室外側に排水される。
Next, a drainage path of water (condensation water, rainwater blown from the outdoor side, etc.) generated on the upper surface of the lower frame 10 will be described with reference to FIG. FIG. 3 shows a cross section of the right portion of the sash. However, all the drainage holes 25a to 25e that are originally located on the left side of the sash and that are originally different in the left-right direction are schematically shown in one drawing. First, water generated on the indoor side of the inner rail 22b flows to the outdoor side along the inclination of the inner upper side surface portion 21b, and flows down to the upper surface drain hole 25a formed on the indoor side of the inner rail 22b. Water is drained from the upper surface drain hole 25a to the outdoor side through the inner hollow portion 23b, the lower drain hole 25b, the intermediate gap portion 23c, the main body upper surface drain hole 15, the main body hollow portion 12, and the main body front drain hole 16. (A arrow). Further, the water generated between the outer rail 22a and the inner rail 22b has different drainage paths on the left and right sides of the sash. The water generated on the right side of the sash, that is, on the indoor side of the shoji 4a flows into the indoor side along the inclination of the outer upper side surface portion 21a, flows into the inner groove 26b, and is drained into the inner groove formed at the bottom of the inner groove 26b. It flows down into the hole 25d. Then, the water is drained from the inner groove drain hole 25d to the outdoor side via the intermediate gap 23c, the main body upper surface drain hole 15, the main body hollow section 12, and the main body front drain hole 16 (B arrow). On the other hand, the water produced on the left side of the sash, that is, on the outdoor side of the inner impeller 4b, flows indoors along the inclination of the outer upper side surface portion 21a, flows into the inner groove 26b, and from the left end of the inner groove 26b to the left end. It is drained to the outdoor side through the inner groove communication part of the part. Furthermore, the water generated on the outdoor side of the outer rail 22a flows into the outer groove 26a and flows down to the outer groove drain hole 25c formed at the bottom of the outer groove 26a. Then, the water is drained from the outer groove drain hole 25c to the outdoor side via the outer hollow portion 23a and the front drain hole 25e (C arrow). Further, when the amount of water is large, the water is drained from the right end of the outer groove 26a to the outdoor side via the outer groove communicating portion 34 of the right end part 3.
なお、下枠補助材２の取り付けの際、左右のうち初めに端面５を当接させる側（回転中心側）においては、端部部品３の突起３１を下枠補助材２のホロー部２３に挿入するようにしてもよい（このホロー部２３は、上記の外ホロー部２３ａ又は内ホロー部２３ｂでもよいし、それらとは別に形成したものでもよい）。この場合、図８に示すように、突起３１の先端部分の下面を先細となるように傾斜させることが望ましい。このようにすれば、傾斜部分３１ａが、突起３１をホロー部２３に挿入する際のガイドとなる。また、傾斜していない根元部分３１ｂが、下枠補助材２の上下動を規制して、下枠補助材２を確実に位置決めできる。
When attaching the lower frame auxiliary material 2, the projection 31 of the end part component 3 is formed on the hollow portion 23 of the lower frame auxiliary material 2 on the side where the end surface 5 is first brought into contact with the left and right (rotation center side). You may make it insert (this hollow part 23 may be said outer hollow part 23a or inner hollow part 23b, and may be formed separately from them). In this case, as shown in FIG. 8, it is desirable to incline the lower surface of the tip portion of the protrusion 31 so as to be tapered. In this way, the inclined portion 31 a serves as a guide when the protrusion 31 is inserted into the hollow portion 23. Moreover, the base part 31b which is not inclined restrict | limits the vertical motion of the lower frame auxiliary material 2, and can position the lower frame auxiliary material 2 reliably.
また、下枠補助材２の端面５の傾斜角度は特に限定されるものではないが、垂直面に対して３０度程度の傾斜角度とすれば、上記の作用効果が得られ、かつ下枠補助材２の端部が鈍角となるので、端部の強度の低下を防ぐことができるとともに、作業者が触れてもけがをしにくく、取り扱い上の安全性も確保できる。
In addition, the inclination angle of the end surface 5 of the lower frame auxiliary material 2 is not particularly limited. However, if the inclination angle is about 30 degrees with respect to the vertical plane, the above-described effects can be obtained, and the lower frame auxiliary material can be obtained. Since the end portion of the material 2 has an obtuse angle, the strength of the end portion can be prevented from being lowered, and it is difficult to be injured even if the operator touches it, and safety in handling can be ensured.
続いて、本発明のサッシの第二実施形態について説明する。第二実施形態において、第一実施形態と異なる点は、下枠補助材２０２の一方の端面のみが傾斜している点である。より詳しくは、第二実施形態は、第一実施形態と同じ断面形状の下枠２１０（下枠本体２０１及び下枠補助材２０２）と縦枠２０を備えるものであって、図９に示すように、下枠補助材２０２の右側の端面２０５のみが、上側から下側に向けて左右方向中央側へ約４５度傾斜しており、左側の端面２０５は、垂直である。そして、下枠補助材２０２の右端と右側の縦枠２０の間には、第一実施形態と同じ形状の端部部品２０３を設けてあり、下枠補助材２０２の左端は左側の縦枠２０に直接当接している。このように構成した下枠補助材２０２及び端部部品２０３を下枠本体２０１に取り付ける際には、まず、端部部品２０３を右側の縦枠２０に当接させて設置する。続いて、下枠補助材２０２の左側の端面２０５の上端部を、左側の縦枠２０に当接させる。この際、下枠補助材２０２を縦枠２０の突条２０ａの下端の切除部に潜り込ませることになるが、下枠補助材２０２と突条２０ａとの干渉を避ける必要がある。そこで、図１０に示すように、取り付けの際には下枠補助材２０２を本来の位置よりも室内側にずらし、内溝２２６ｂに突条２０ａの下端部を入り込ませるようにして、突条２０ａを回避する。そして、縦枠２０に当接させた左側の端面２０５の上端部を回転中心として下枠補助材２０２を回転させて、右側の端部を端部部品２０３に上側から近づける。下枠補助材２０２を突条２０ａに干渉しない位置まで回転させたら、下枠補助材２０２を室外側の本来の位置にずらし、さらに下枠補助材２０２が水平向きになる位置まで回転させると、端部部品２０３の当接面２０６が下枠補助材２０２の右側の端面２０５に当接する。また、左側の縦枠２０の突条２０ａの下端は、下枠補助材２０２の上面に略当接する。
Next, a second embodiment of the sash of the present invention will be described. The second embodiment is different from the first embodiment in that only one end face of the lower frame auxiliary material 202 is inclined. More specifically, the second embodiment includes the lower frame 210 (the lower frame main body 201 and the lower frame auxiliary material 202) and the vertical frame 20 having the same cross-sectional shape as the first embodiment, as shown in FIG. In addition, only the right end surface 205 of the lower frame auxiliary member 202 is inclined by about 45 degrees from the upper side to the lower side toward the center in the left-right direction, and the left end surface 205 is vertical. An end part 203 having the same shape as that of the first embodiment is provided between the right end of the lower frame auxiliary material 202 and the right vertical frame 20, and the left end of the lower frame auxiliary material 202 is the left vertical frame 20. Directly touching. When attaching the lower frame auxiliary member 202 and the end part 203 configured as described above to the lower frame main body 201, first, the end part 203 is placed in contact with the right vertical frame 20. Subsequently, the upper end portion of the left end face 205 of the lower frame auxiliary member 202 is brought into contact with the left vertical frame 20. At this time, the lower frame auxiliary member 202 is made to enter the cut portion at the lower end of the protrusion 20a of the vertical frame 20, but it is necessary to avoid interference between the lower frame auxiliary member 202 and the protrusion 20a. Therefore, as shown in FIG. 10, when attaching, the lower frame auxiliary material 202 is shifted to the indoor side from the original position, and the lower end of the ridge 20a is inserted into the inner groove 226b, so that the ridge 20a. To avoid. Then, the lower frame auxiliary member 202 is rotated with the upper end portion of the left end surface 205 in contact with the vertical frame 20 as the rotation center, and the right end portion is brought closer to the end part 203 from above. When the lower frame auxiliary material 202 is rotated to a position where it does not interfere with the ridge 20a, the lower frame auxiliary material 202 is shifted to the original position on the outdoor side, and further rotated to a position where the lower frame auxiliary material 202 is horizontally oriented. The contact surface 206 of the end part 203 contacts the right end surface 205 of the lower frame auxiliary material 202. Further, the lower end of the ridge 20 a of the left vertical frame 20 is substantially in contact with the upper surface of the lower frame auxiliary material 202.
この第二実施形態のように、下枠補助材２０２の一方の端面２０５のみを傾斜させた場合でも、他方の端部を回転中心として上側から回転させて着脱することで、下枠補助材２０２が左右に動くことがなく、下枠補助材２０２の端部が不意に縦枠２０の内周側面に接触することを回避できる。また、下枠補助材２０２の左右の両端面２０５が垂直である場合、下枠補助材２０２を着脱可能とするためには、左右の縦枠２０の間隔よりも下枠補助材２０２を短くして、ある程度のクリアランスを設けることが必要であったが、下枠補助材２０２を回転させて取り付けるようにすると、クリアランスが不要となり、さらに、端部部品２０３の当接面２０６を下枠補助材２０２の端面２０５に対向して傾斜させてあるので、下枠補助材２０２の端面２０５と端部部品２０３の当接面２０６とを密着させることができ、この部分の気密性・水密性が向上する。その他、端部部品２０３と、下枠補助材２０２又は縦枠２０との関係は、第一実施形態の場合と同じである。なお、第二実施形態では、垂直に形成した下枠補助材２０２の左側の端面２０５を縦枠２０に直接当接させているが、下枠補助材２０２の左側の端面２０５にキャップ部品を取り付けて、キャップ部品が下枠補助材２０２の左端と左側の縦枠２０の間に位置するようにしてもよい。この場合、キャップ部品は、第一実施形態の左側に取り付けた端部部品のように、内溝２２６ｂから室外側へ至る排水経路を有することが望ましい。
Even when only one end face 205 of the lower frame auxiliary material 202 is inclined as in the second embodiment, the lower frame auxiliary material 202 is attached and detached by rotating from the upper side with the other end portion as the rotation center. Does not move left and right, and the end of the lower frame auxiliary member 202 can be prevented from unexpectedly contacting the inner peripheral side surface of the vertical frame 20. Further, when the left and right end faces 205 of the lower frame auxiliary material 202 are vertical, in order to make the lower frame auxiliary material 202 removable, the lower frame auxiliary material 202 is made shorter than the interval between the left and right vertical frames 20. Thus, it is necessary to provide a certain amount of clearance. However, if the lower frame auxiliary member 202 is rotated and attached, the clearance becomes unnecessary, and the contact surface 206 of the end part 203 is further provided on the lower frame auxiliary member. Since it is inclined to face the end face 205 of 202, the end face 205 of the lower frame auxiliary member 202 and the abutting face 206 of the end part 203 can be brought into close contact with each other, and the air tightness and water tightness of this part are improved. To do. In addition, the relationship between the end part 203 and the lower frame auxiliary material 202 or the vertical frame 20 is the same as in the case of the first embodiment. In the second embodiment, the left end surface 205 of the vertically formed lower frame auxiliary member 202 is directly brought into contact with the vertical frame 20, but a cap component is attached to the left end surface 205 of the lower frame auxiliary member 202. Thus, the cap component may be positioned between the left end of the lower frame auxiliary member 202 and the left vertical frame 20. In this case, it is desirable that the cap part has a drainage path from the inner groove 226b to the outdoor side, like the end part attached to the left side of the first embodiment.
続いて、本発明のサッシの第三実施形態について説明する。第三実施形態において、第一実施形態と異なる点は、下枠補助材３０２が長手方向（左右方向）に三分割されている点である。より詳しくは、第三実施形態は、第一実施形態と同じ断面形状の下枠３１０（下枠本体３０１及び下枠補助材３０２）と縦枠２０、及び左右の端部部品３０３を備えるものであって、下枠補助材３０２の左右の端面３０５は、上側から下側に向けて左右方向中央側へ約４５度傾斜している。そして、下枠補助材３０２が、長手方向に略三等分に分割されており、これらを左側から左側部材３０２Ｌ、中央部材３０２Ｃ及び右側部材３０２Ｒとする。このように構成した下枠補助材３０２及び端部部品３０３を下枠本体３０１に取り付ける際には、図１１に示すように、まず、端部部品３０３をそれぞれ左右の縦枠２０に当接させて設置する。続いて、左側部材３０２Ｌを下枠本体３０１の上面に載置して、左側の端面３０５を左側の端部部品３０３の当接面３０６に当接させ、さらに中央部材３０２Ｃを下枠本体３０１の上面に載置して、左端を左側部材３０２Ｌの右端に当接させる。そして、右側部材３０２Ｒの左端を中央部材３０２Ｃの右端に当接させ、この当接部分を回転中心として右側部材３０２Ｒを回転させて、右端を右側の端部部品３０３に上側から近づける。そのまま右側部材３０２Ｒが水平向きになる位置まで回転させると、右側の端部部品３０３の当接面３０６が右側部材３０２Ｒの右側の端面３０５に当接する。なお、上記の例では左側部材３０２Ｌを先に取り付けたが、もちろん右側部材３０２Ｒを先に取り付けてもよい。
Next, a third embodiment of the sash of the present invention will be described. The third embodiment is different from the first embodiment in that the lower frame auxiliary material 302 is divided into three in the longitudinal direction (left-right direction). More specifically, the third embodiment includes a lower frame 310 (lower frame main body 301 and lower frame auxiliary material 302) having the same cross-sectional shape as the first embodiment, a vertical frame 20, and left and right end parts 303. The left and right end surfaces 305 of the lower frame auxiliary member 302 are inclined about 45 degrees from the upper side to the lower side toward the center in the left-right direction. The lower frame auxiliary material 302 is divided into approximately three equal parts in the longitudinal direction, and these are defined as a left member 302L, a central member 302C, and a right member 302R from the left. When attaching the lower frame auxiliary material 302 and the end part component 303 configured as described above to the lower frame main body 301, first, the end part component 303 is first brought into contact with the left and right vertical frames 20 as shown in FIG. Install. Subsequently, the left member 302L is placed on the upper surface of the lower frame body 301, the left end surface 305 is brought into contact with the contact surface 306 of the left end component 303, and the central member 302C is further moved to the lower frame body 301. It is placed on the upper surface and the left end is brought into contact with the right end of the left member 302L. Then, the left end of the right member 302R is brought into contact with the right end of the central member 302C, and the right member 302R is rotated around the contact portion as a rotation center so that the right end is brought close to the right end part 303 from above. If the right member 302R is rotated as it is to the horizontal position, the contact surface 306 of the right end part 303 contacts the right end surface 305 of the right member 302R. In the above example, the left member 302L is attached first, but of course the right member 302R may be attached first.
この第三実施形態のように、下枠補助材３０２の長手方向に分割した場合でも、最端部の部材を上側から回転させて着脱することで、下枠補助材３０２を構成する各部材が不意に縦枠２０の内周側面に接触することを回避できる。また、下枠補助材３０２の左右の両端面３０５が垂直である場合、下枠補助材３０２を着脱可能とするためには、左右の縦枠２０の間隔よりも下枠補助材３０２を短くして、ある程度のクリアランスを設けることが必要であったが、下枠補助材３０２を回転させて取り付けるようにすると、クリアランスが不要となり、さらに、端部部品３０３の当接面３０６を下枠補助材３０２の端面３０５に対向して傾斜させてあるので、下枠補助材３０２の端面３０５と端部部品３０３の当接面３０６とを密着させることができ、この部分の気密性・水密性が向上する。その他、端部部品３０３と、下枠補助材３０２又は縦枠２０との関係は、第一実施形態の場合と同じである。なお、このように下枠補助材３０２を三分割した場合、内障子及び外障子を左右の一方に寄せることで、障子を取り外すことなく、左側部材３０２Ｌ又は右側部材３０２Ｒを着脱できる。
Even when the lower frame auxiliary material 302 is divided in the longitudinal direction as in the third embodiment, each member constituting the lower frame auxiliary material 302 can be removed by rotating the outermost member from the upper side and removing it. Abrupt contact with the inner peripheral side surface of the vertical frame 20 can be avoided. Further, when the left and right end faces 305 of the lower frame auxiliary material 302 are vertical, in order to make the lower frame auxiliary material 302 removable, the lower frame auxiliary material 302 is made shorter than the interval between the left and right vertical frames 20. Thus, it is necessary to provide a certain amount of clearance. However, if the lower frame auxiliary member 302 is rotated and attached, the clearance becomes unnecessary, and the abutting surface 306 of the end part 303 is further provided on the lower frame auxiliary member. 302 is inclined to face the end surface 305, so that the end surface 305 of the lower frame auxiliary member 302 and the contact surface 306 of the end part 303 can be brought into close contact with each other, and the air tightness and water tightness of this portion are improved. To do. In addition, the relationship between the end part component 303 and the lower frame auxiliary material 302 or the vertical frame 20 is the same as in the first embodiment. In addition, when the lower frame auxiliary material 302 is divided into three in this way, the left member 302L or the right member 302R can be attached and detached without removing the shoji by moving the inner and outer shoji to one of the left and right.
続いて、本発明のサッシの第四実施形態について説明する。第一実施形態と異なる部分を中心に説明し、第一実施形態と同じ部分の説明は適宜省略する。第四実施形態の下枠４１０も、下枠本体４０１と下枠補助材４０２とを備えるものであり、下枠本体４０１については、第一実施形態と略同じものである。そして、下枠補助材４０２は、図１４及び図１５に示すように、室外側補助材４０２ａと室内側補助材４０２ｂの二部材に分割されている。なお、図１４はサッシの右側部分における断面を示したものである。ただし、本来サッシの左側に位置する内障子や、本来左右方向位置が異なる各排水孔のすべてを、一つの図面に模式的に示してある。室外側補助材４０２ａは、室外側端から内上側面部４２１ｂの水平部分までを構成しており、室内側補助材４０２ｂは、内上側面部４２１ｂの傾斜部分から室内側端までを構成していて、内上側面部４２１ｂ及び内ホロー部４２３ｂも室内外に分割されている。内レール４２２ｂの下側には、壁面部４２４を形成してある。壁面部４２４は、室外側補助材４０２ａの内上側面部４２１ｂから下側に延び、途中で室外側に屈曲してさらに下側に延びており、内ホロー部４２３ｂの一部を構成するとともに、内溝４２６ｂのタイト材ホルダ及び内溝４２６ｂの一部を構成している。そして、第一実施形態と同じように、内レール４２２ｂの室内側、すなわち室外側補助材４０２ａの内上側面部４２１ｂの水平部分には、上面排水孔４２５ａが形成してあり、上面排水孔４２５ａは内ホロー部４２３ｂに連通している。また、内ホロー部４２３ｂの室外側下端部には、下部排水孔４２５ｂが形成してあり、中間空隙部４２３ｃに連通している。よって、内レール４２２ｂの室内側に生じた水の排水経路は、第一実施形態と同じである（図１４中の点線矢印）。その他、外上側面部４２１ａ、アングル片４２１ｃ、外ホロー部４２３ａ、外溝４２６ａ、外溝排水孔４２５ｃ、内溝排水孔４２５ｄ及び正面排水孔４２５ｅの構成も第一実施形態と同じであり、外レール４２２ａと内レール４２２ｂの間及び外レール４２２ａの室外側に生じた水の排水経路も、第一実施形態と同じである。
Subsequently, a fourth embodiment of the sash of the present invention will be described. The description will focus on the parts different from the first embodiment, and the description of the same parts as in the first embodiment will be omitted as appropriate. The lower frame 410 of the fourth embodiment is also provided with a lower frame main body 401 and a lower frame auxiliary material 402, and the lower frame main body 401 is substantially the same as that of the first embodiment. And the lower frame auxiliary | assistant material 402 is divided | segmented into two members, the outdoor side auxiliary material 402a and the indoor side auxiliary material 402b, as shown in FIG.14 and FIG.15. FIG. 14 shows a cross section of the right portion of the sash. However, all of the inner shoji which is originally located on the left side of the sash and each drainage hole which is originally different in the left-right direction are schematically shown in one drawing. The outdoor side auxiliary material 402a is configured from the outdoor side end to the horizontal portion of the inner upper side surface portion 421b, and the indoor side auxiliary material 402b is configured from the inclined portion of the inner upper side surface portion 421b to the indoor side end. Thus, the inner upper side surface portion 421b and the inner hollow portion 423b are also divided indoors and outdoors. A wall surface portion 424 is formed below the inner rail 422b. The wall surface portion 424 extends downward from the inner upper side surface portion 421b of the outdoor side auxiliary member 402a, bends to the outdoor side in the middle and extends further downward, and constitutes a part of the inner hollow portion 423b. The tight material holder of the inner groove 426b and a part of the inner groove 426b are configured. As in the first embodiment, the upper surface drain hole 425a is formed on the indoor side of the inner rail 422b, that is, the horizontal portion of the inner upper side surface portion 421b of the outdoor auxiliary member 402a, and the upper surface drain hole 425a. Is in communication with the inner hollow portion 423b. Further, a lower drain hole 425b is formed in the lower end on the outdoor side of the inner hollow portion 423b and communicates with the intermediate gap portion 423c. Therefore, the drainage path of the water generated on the indoor side of the inner rail 422b is the same as that of the first embodiment (dotted line arrow in FIG. 14). In addition, the configuration of the outer upper side surface portion 421a, the angle piece 421c, the outer hollow portion 423a, the outer groove 426a, the outer groove drain hole 425c, the inner groove drain hole 425d, and the front drain hole 425e is the same as that of the first embodiment. The drainage path of water generated between the rail 422a and the inner rail 422b and on the outdoor side of the outer rail 422a is also the same as in the first embodiment.
また、図１５（ａ）に示すように、室外側補助材４０２ａの左右の端面４０５は、垂直向きであってかつ室外側から室内側に向けて左右方向中央側へ約３０度傾斜している。一方、室内側補助材４０２ｂの左右の端面は、垂直向きであってかつ室内外方向に平行である。
Further, as shown in FIG. 15A, the left and right end faces 405 of the outdoor side auxiliary member 402a are vertically oriented and inclined about 30 degrees toward the center in the left-right direction from the outdoor side toward the indoor side. . On the other hand, the left and right end surfaces of the indoor auxiliary material 402b are vertically oriented and parallel to the indoor / outdoor direction.
さらに、図１２及び図１３に示すように、下枠補助材４０２の左右両端と、左右の縦枠２０の間には、それぞれ樹脂製の端部部品４０３を設けてある（図１２及び図１３は右側端について図示）。図１６に示すように、端部部品４０３（右側端に取り付けるもの）は、ブロック状のもので、左側面の室外側部分は、室外側から室内側に向けて左右方向中央側へ約３０度傾斜しており、室内側部分は、室内外方向に平行に形成してあり、これらの面が下枠補助材４０２の端面４０５と当接する当接面４０６となっている。そして、当接面４０６（傾斜部分）には、中間空隙部４２３ｃに挿入して係合する突起４３１を形成してある。突起４３１は、下枠補助材４０２の外上側面部４２１ａに対応して、上面が室内側に向けて下方に傾斜している。また、端部部品４０３は、縦枠２０の内周側面に当接している。ここで、縦枠２０の内周側面には、外障子４ａ又は内障子４ｂの戸当り框に対向して内周側に突出する突条２０ａが形成されているが、この突条２０ａの下端部は切除されており、切除部に端部部品４０３が納まっている。また、端部部品４０３の上面には、上向きに突出する突出片４３５を形成してあって、突出片４３５に突条２０ａの下端部が当接している。そして、端部部品４０３は、その当接面４０６によって、下枠補助材４０２の外ホロー部４２３ａ及び中間空隙部４２３ｃの右端を塞いでいる。また、室内側には、内ホロー部４２３ｂと連通する内ホロー部連通部４３２を形成してあり、内ホロー部連通部４３２は、略Ｕ字形状で上側に開口している。さらに、室内外中央部には、内溝４２６ｂに連通する内溝連通部４３３を形成してあり、内溝連通部４３３は、略Ｕ字形状で上側に開口している。また、室外側には、外溝４２６ａと連通する外溝連通部４３４を形成してあり、外溝連通部４３４は上側、右側及び室外側に開口している。ただし、外溝連通部４３４の右側には縦枠２０の内周側面が位置しているので、外溝連通部４３４は外溝４２６ａから室外側へ至る排水経路となっている。なお、下枠補助材４０２の左側端に取り付ける端部部品は、上記の右側端に取り付ける端部部品４０３と略左右対称のものである。ただし、下枠補助材４０２の外溝４２６ａを塞ぐものである点と、内溝連通部が室外側に開口していて、内溝４２６ｂから室外側へ至る排水経路が形成されている点が異なる。
Further, as shown in FIGS. 12 and 13, resin end parts 403 are provided between the left and right ends of the lower frame auxiliary material 402 and between the left and right vertical frames 20, respectively (FIGS. 12 and 13). Is shown on the right side). As shown in FIG. 16, the end part 403 (attached to the right end) is in a block shape, and the outdoor portion on the left side surface is about 30 degrees from the outdoor side toward the indoor side in the left-right direction. It is inclined and the indoor side portion is formed parallel to the indoor / outdoor direction, and these surfaces serve as contact surfaces 406 that contact the end surface 405 of the lower frame auxiliary material 402. A protrusion 431 is formed on the contact surface 406 (inclined portion) to be inserted into and engaged with the intermediate gap 423c. The protrusion 431 has an upper surface inclined downward toward the indoor side in correspondence with the outer upper side surface portion 421a of the lower frame auxiliary member 402. The end part 403 is in contact with the inner peripheral side surface of the vertical frame 20. Here, on the inner peripheral side surface of the vertical frame 20, a ridge 20a is formed that protrudes toward the inner periphery facing the door ridge of the outer shoji 4a or the inner shoji 4b. The lower end of the ridge 20a The part is excised, and the end part 403 is accommodated in the excised part. Further, a projecting piece 435 projecting upward is formed on the upper surface of the end part component 403, and the lower end of the protrusion 20 a is in contact with the projecting piece 435. The end part 403 closes the right end of the outer hollow part 423a and the intermediate gap part 423c of the lower frame auxiliary member 402 by the contact surface 406. In addition, an inner hollow portion communication portion 432 that communicates with the inner hollow portion 423b is formed on the indoor side, and the inner hollow portion communication portion 432 is substantially U-shaped and opens upward. Further, an inner groove communicating portion 433 communicating with the inner groove 426b is formed in the indoor / outdoor central portion, and the inner groove communicating portion 433 is substantially U-shaped and opens upward. Further, an outer groove communication portion 434 that communicates with the outer groove 426a is formed on the outdoor side, and the outer groove communication portion 434 opens to the upper side, the right side, and the outdoor side. However, since the inner peripheral side surface of the vertical frame 20 is located on the right side of the outer groove communication portion 434, the outer groove communication portion 434 serves as a drainage path from the outer groove 426a to the outdoor side. Note that the end part attached to the left end of the lower frame auxiliary material 402 is substantially bilaterally symmetrical with the end part 403 attached to the right end. However, the difference is that the outer groove 426a of the lower frame auxiliary material 402 is closed, and the inner groove communication portion is open to the outdoor side, and a drainage path from the inner groove 426b to the outdoor side is formed. .
このように構成した下枠補助材４０２及び端部部品４０３を下枠本体４０１に取り付ける際には、図１７に示すように、まず、端部部品４０３をそれぞれ左右の縦枠２０に当接させて設置する。続いて、室外側補助材４０２ａの一方の端面４０５（図では左側の端面４０５）の室外側端部分を、一方の端部部品４０３の当接面４０６の室外側端部分に当接させる。そして、この当接部分を回転中心として室外側補助材４０２ａを回転させて、他方の端部を他方の端部部品４０３に室外側から近づける。そのまま室外側補助材４０２ａが左右方向に平行な向きになる位置まで回転させると、端部部品４０３の当接面４０６が室外側補助材４０２ａの左右の端面４０５にそれぞれ当接し、突起４３１が中間空隙部４２３ｃに挿入されて正確に位置決めできる。その後、室外側補助材４０２ａの室内側に室内側補助材４０２ｂを取り付け、アングル片４２１ｃを躯体にネジ止めして、下枠補助材４０２が固定される。一方、下枠補助材４０２を下枠本体４０１から取り外す際には、ネジを外して、取付時とは逆に動かせばよい。
When attaching the lower frame auxiliary material 402 and the end part 403 thus configured to the lower frame main body 401, as shown in FIG. 17, first, the end parts 403 are brought into contact with the left and right vertical frames 20, respectively. Install. Subsequently, the outdoor side end portion of one end surface 405 (the left end surface 405 in the figure) of the outdoor side auxiliary material 402a is brought into contact with the outdoor side end portion of the contact surface 406 of the one end part 403. Then, the outdoor auxiliary material 402a is rotated with this contact portion as the rotation center, and the other end portion is brought close to the other end part component 403 from the outdoor side. When the outdoor auxiliary material 402a is rotated as it is to a position parallel to the left-right direction, the contact surface 406 of the end part 403 contacts the left and right end surfaces 405 of the outdoor auxiliary material 402a, and the projection 431 is intermediate. It can be accurately positioned by being inserted into the gap 423c. Thereafter, the indoor auxiliary material 402b is attached to the indoor side of the outdoor auxiliary material 402a, and the angle piece 421c is screwed to the housing to fix the lower frame auxiliary material 402. On the other hand, when removing the lower frame auxiliary material 402 from the lower frame main body 401, the screw may be removed and moved in the reverse direction to the attachment.
なお、端部部品４０３の下側面と外周側面には一連のパッキンを取り付けてあり、それぞれ端部部品４０３と下枠本体４０１の上面及び端部部品４０３と縦枠２０の内周側面の間を密封している。また、端部部品４０３の当接面４０６にもパッキンを取り付けてあり、端部部品４０３と下枠補助材４０２の間を密封している。さらに、端部部品４０３の室内側面にもパッキンを取り付けてある。このパッキンは、縦枠２０の室内側端のアングル片２０ｂ（図１２）の下端と、下枠本体４０１の室内側端の起立片４１３の上端との金属同士の接触部に、室外側から当接して、縦枠２０のアングル片２０ｂの下端から室内側へ躯体内漏水が生じることを防ぐものである。また、室外側補助材４０２ａと室内側補助材４０２ｂの間にもパッキンを設けて、両者の間を密封している。
In addition, a series of packings are attached to the lower side surface and the outer peripheral side surface of the end part 403, and the gap between the end part 403 and the upper surface of the lower frame body 401 and between the end part 403 and the inner peripheral side surface of the vertical frame 20, respectively. Sealed. Further, a packing is also attached to the contact surface 406 of the end part 403, and the gap between the end part 403 and the lower frame auxiliary material 402 is sealed. Further, a packing is also attached to the interior side surface of the end part 403. This packing is applied from the outdoor side to the metal contact portion between the lower end of the angle piece 20b (FIG. 12) at the indoor end of the vertical frame 20 and the upper end of the upright piece 413 at the indoor end of the lower frame body 401. In contact therewith, leakage of the enclosure from the lower end of the angle piece 20b of the vertical frame 20 to the indoor side is prevented. Further, a packing is also provided between the outdoor side auxiliary material 402a and the indoor side auxiliary material 402b to seal between the two.
このように、第四実施形態においては、下枠補助材４０２のうち、室外側補助材４０２ａの一端を端部部品４０３に当接させた上で、室外側から回転させて着脱するので、室外側補助材４０２ａが左右に動くことがなく、室外側補助材４０２ａの端部が縦枠２０の内周側面に接触することを回避できる。ここで、室外側補助材４０２ａを回転させて着脱可能となったのは、室外側補助材４０２ａの端面４０５を室外側から室内側に向けて左右方向中央側へ傾斜させたからである。もし端面が室内外方向に平行であれば、一端の室外側端部を回転中心とした際に、他端の室内側端部が端部部品４０３に食い込んで当接面４０６を傷付けたり、当接面４０６に取り付けたパッキンを削り取ったりしてしまうが、傾斜によりこの食い込みを回避したものであり、当接面４０６に取り付けたパッキンも適切に密着させて隙間を密封できる。また、室外側補助材４０２ａの端面４０５が室内外方向に平行である場合、室外側補助材４０２ａを着脱可能とするためには、左右の縦枠２０の間隔よりも室外側補助材４０２ａを短くして、ある程度のクリアランスを設けることが必要であったが、第四実施形態のように室外側補助材４０２ａを回転させて取り付けるようにすると、クリアランスが不要となり、さらに、端部部品４０３の当接面４０６を室外側補助材４０２ａの端面４０５に対向して傾斜させてあるので、室外側補助材４０２ａの端面４０５と端部部品４０３の当接面４０６とを密着させることができ、この部分の気密性・水密性が向上する。そして、端部部品４０３は縦枠２０に当接させて設置するものであるから、縦枠２０と端部部品４０３、及び端部部品４０３と下枠補助材４０２とを密着させて一連のものとすることができる。さらに、端部部品４０３の上面の突出片４３５に突条２０ａの下端部が当接しているので、縦枠２０の突条２０ａの下端部から下枠補助材４０２までが端部部品４０３により隙間なく連続して、気密・水密が維持される。
Thus, in the fourth embodiment, since one end of the outdoor side auxiliary material 402a in the lower frame auxiliary material 402 is brought into contact with the end part component 403 and then rotated from the outdoor side, it is attached and detached. The outer auxiliary material 402a does not move to the left and right, and the end of the outdoor auxiliary material 402a can be prevented from contacting the inner peripheral side surface of the vertical frame 20. Here, the reason why the outdoor auxiliary member 402a is rotated and becomes detachable is that the end surface 405 of the outdoor auxiliary member 402a is inclined from the outdoor side toward the indoor side toward the center in the left-right direction. If the end face is parallel to the indoor / outdoor direction, the indoor side end of the other end will bite into the end part 403 and damage the contact surface 406 when the outdoor end at one end is used as the center of rotation. The packing attached to the contact surface 406 is scraped off, but this biting is avoided by the inclination, and the packing attached to the contact surface 406 can also be brought into close contact with the gap to seal the gap. When the end surface 405 of the outdoor auxiliary material 402a is parallel to the indoor / outdoor direction, the outdoor auxiliary material 402a is shorter than the interval between the left and right vertical frames 20 in order to make the outdoor auxiliary material 402a detachable. Thus, it is necessary to provide a certain amount of clearance. However, if the outdoor auxiliary material 402a is rotated and attached as in the fourth embodiment, the clearance becomes unnecessary, and the end part 403 is further contacted. Since the contact surface 406 is inclined to face the end surface 405 of the outdoor auxiliary material 402a, the end surface 405 of the outdoor auxiliary material 402a and the contact surface 406 of the end part 403 can be brought into close contact with each other. Improves airtightness and watertightness. Since the end part 403 is installed in contact with the vertical frame 20, the vertical frame 20 and the end part 403, and the end part 403 and the lower frame auxiliary material 402 are in close contact with each other. It can be. Furthermore, since the lower end portion of the protrusion 20 a is in contact with the protruding piece 435 on the upper surface of the end part 403, the end part 403 has a gap between the lower end part of the protrusion 20 a of the vertical frame 20 and the lower frame auxiliary material 402. Airtight and watertight are maintained continuously.
さらに、下枠本体４０１に対して下枠補助材４０２を室外側から取り付けるものであって、上下方向に動かす必要はないから、縦枠２０の突条２０ａの突出長さにかかわらず、下枠補助材４０２が縦枠２０の突条２０ａに干渉することがない。従来、この干渉を避けるために下枠補助材を見込方向に複数に分割しており、分割された部材同士の隙間からホコリや砂が入り込んで下枠本体の上面にたまってしまい、清掃に手間がかかることが問題であった。しかし、第四実施形態では、見込方向に一連の下枠補助材４０２を取り付けることができるので、下枠本体４０１にホコリや砂がたまることはなく、清掃が極めて容易である（下枠補助材４０２は室外側補助材４０２ａと室内側補助材４０２ｂに分割されているが、両者は当接して一連になっており、従来品のような部材同士の隙間はないので、ホコリや砂が入らない）。なお、清掃などのメンテナンス時には、下枠補助材４０２のうち室外側補助材４０２ａのみを取り外すことができるので、作業が特に容易である。そして、下枠補助材４０２を分割したことにより、室外から見える室外側補助材４０２ａと、室内から見える室内側補助材４０２ｂとで色彩を変えることも容易である。また、下枠補助材４０２と突条２０ａとの干渉がなくなることで、下枠補助材４０２を左右方向にも一体の部材とすることが可能となり、部品点数を減らして安価に製品を提供できる。さらに、室外側補助材４０２ａの左右の端面４０５及びこれに対向する端部部品４０３の当接面４０６について、左右対称に傾斜させたことにより、左右のどちら側でも、都合のよい方を回転中心として室外側補助材４０２ａを着脱できる。
Further, since the lower frame auxiliary material 402 is attached to the lower frame main body 401 from the outdoor side and does not need to be moved in the vertical direction, the lower frame is independent of the protruding length of the protrusion 20a of the vertical frame 20. The auxiliary material 402 does not interfere with the protrusion 20a of the vertical frame 20. Conventionally, in order to avoid this interference, the lower frame auxiliary material is divided into multiple parts in the expected direction, and dust and sand enter from the gaps between the divided members and accumulate on the upper surface of the lower frame main body, which is troublesome to clean. It was a problem to take. However, in the fourth embodiment, since a series of lower frame auxiliary materials 402 can be attached in the expected direction, dust and sand do not accumulate on the lower frame main body 401, and cleaning is extremely easy (lower frame auxiliary materials). 402 is divided into an outdoor auxiliary material 402a and an indoor auxiliary material 402b, but they are in contact with each other and there is no gap between members as in the conventional product, so dust and sand do not enter. ). Note that, during maintenance such as cleaning, only the outdoor side auxiliary material 402a of the lower frame auxiliary material 402 can be removed, so that the operation is particularly easy. Then, by dividing the lower frame auxiliary material 402, it is easy to change the color between the outdoor auxiliary material 402a visible from the outdoor side and the indoor auxiliary material 402b visible from the indoor side. Further, since the interference between the lower frame auxiliary material 402 and the protrusions 20a is eliminated, the lower frame auxiliary material 402 can be an integral member in the left-right direction, and the product can be provided at a low cost by reducing the number of parts. . Further, the right and left end surfaces 405 of the outdoor auxiliary material 402a and the contact surfaces 406 of the end parts 403 facing the left and right end surfaces are inclined symmetrically, so that the convenient rotation center on either the left or right side The outdoor auxiliary material 402a can be attached and detached.
続いて、本発明のサッシの第五実施形態について説明する。第五実施形態において、第四実施形態と異なる点は、下枠補助材５０２が長手方向（左右方向）に二分割されている点である。より詳しくは、第五実施形態は、第四実施形態と同じ断面形状の下枠５１０（下枠本体５０１及び下枠補助材５０２（室外側補助材５０２ａ及び室内側補助材５０２ｂ））と縦枠２０、及び左右の端部部品５０３を備えるものであって、室外側補助材５０２ａの左右の端面５０５は、垂直向きであってかつ室外側から室内側に向けて左右方向中央側へ約３０度傾斜している。一方、室内側補助材５０２ｂの左右の端面は、垂直向きであってかつ室内外方向に平行である。そして、室外側補助材５０２ａが、長手方向に略二等分に分割されており、これらを左側から室外側左部材５０２ａＬ及び室外側右部材５０２ａＲとする。また、室内側補助材５０２ｂも、長手方向に略二等分に分割されており、これらを左側から室内側左部材５０２ｂＬ及び室内側右部材５０２ｂＲとする。このように構成した下枠補助材５０２及び端部部品５０３を下枠本体５０１に取り付ける際には、図１８に示すように、まず、端部部品５０３をそれぞれ左右の縦枠２０に当接させて設置する。続いて、室外側左部材５０２ａＬを下枠本体５０１の上面に載置して、左側の端面５０５を左側の端部部品５０３の当接面５０６に当接させる。そして、室外側右部材５０２ａＲの左端を室外側左部材５０２ａＬの右端に当接させ、この当接部分を回転中心として室外側右部材５０２ａＲを回転させて、右端を右側の端部部品５０３に室外側から近づける。そのまま室外側右部材５０２ａＲが左右方向に平行な向きになる位置まで回転させると、右側の端部部品５０３の当接面５０６が室外側右部材５０２ａＲの右側の端面５０５に当接する。その後、室外側補助材５０２ａの室内側に、室内側左部材５０２ｂＬ及び室内側右部材５０２ｂＲを取り付ける。なお、上記の例では室外側左部材５０２ａＬを先に取り付けたが、もちろん室外側右部材５０２ａＲを先に取り付けてもよい。
Next, a fifth embodiment of the sash of the present invention will be described. The fifth embodiment is different from the fourth embodiment in that the lower frame auxiliary material 502 is divided into two in the longitudinal direction (left-right direction). More specifically, in the fifth embodiment, the lower frame 510 (the lower frame main body 501 and the lower frame auxiliary material 502 (the outdoor side auxiliary material 502a and the indoor side auxiliary material 502b)) and the vertical frame have the same cross-sectional shape as the fourth embodiment. 20 and left and right end parts 503, and the left and right end surfaces 505 of the outdoor auxiliary member 502a are vertically oriented and about 30 degrees toward the center in the left-right direction from the outdoor side toward the indoor side. It is inclined. On the other hand, the left and right end surfaces of the indoor auxiliary material 502b are vertically oriented and parallel to the indoor / outdoor direction. The outdoor auxiliary material 502a is divided into approximately equal halves in the longitudinal direction, and these are referred to as an outdoor left member 502aL and an outdoor right member 502aR from the left side. The indoor auxiliary material 502b is also divided into approximately equal halves in the longitudinal direction, and these are referred to as an indoor left member 502bL and an indoor right member 502bR from the left side. When attaching the lower frame auxiliary member 502 and the end part component 503 configured as described above to the lower frame main body 501, first, as shown in FIG. 18, the end part component 503 is first brought into contact with the left and right vertical frames 20. Install. Subsequently, the outdoor left member 502aL is placed on the upper surface of the lower frame body 501, and the left end surface 505 is brought into contact with the contact surface 506 of the left end component 503. Then, the left end of the outdoor right member 502aR is brought into contact with the right end of the outdoor left member 502aL, the outdoor right member 502aR is rotated around the contact portion as a rotation center, and the right end is moved to the right end part 503. Approach from the outside. When the outdoor right member 502aR is rotated as it is to a position parallel to the left-right direction, the contact surface 506 of the right end part 503 contacts the right end surface 505 of the outdoor right member 502aR. Thereafter, the indoor left member 502bL and the indoor right member 502bR are attached to the indoor side of the outdoor auxiliary member 502a. In the above example, the outdoor left member 502aL is attached first, but of course the outdoor right member 502aR may be attached first.
この第五実施形態のように、下枠補助材５０２を長手方向に分割した場合でも、最端部の部材を室外側から回転させて着脱することで、下枠補助材５０２を構成する各部材が不意に縦枠２０の内周側面に接触することを回避できる。また、室外側補助材５０２ａの端面５０５が室内外方向に平行である場合、室外側補助材５０２ａを着脱可能とするためには、左右の縦枠２０の間隔よりも室外側補助材５０２ａを短くして、ある程度のクリアランスを設けることが必要であったが、室外側補助材５０２ａを回転させて取り付けるようにすると、クリアランスが不要となり、さらに、端部部品５０３の当接面５０６を室外側補助材５０２ａの端面５０５に対向して傾斜させてあるので、室外側補助材５０２ａの端面５０５と端部部品５０３の当接面５０６とを密着させることができ、この部分の気密性・水密性が向上する。その他、端部部品５０３と、下枠補助材５０２又は縦枠２０との関係は、第四実施形態の場合と同じである。なお、このように下枠補助材５０２を二分割した場合、内障子及び外障子を左右の一方に寄せることで、障子を取り外すことなく、室外側左部材５０２ａＬ及び室内側左部材５０２ｂＬ又は室外側右部材５０２ａＲ及び室内側右部材５０２ｂＲを着脱できる。
As in the fifth embodiment, even when the lower frame auxiliary material 502 is divided in the longitudinal direction, the members constituting the lower frame auxiliary material 502 can be removed by rotating and detaching the endmost member from the outdoor side. Can be prevented from unexpectedly contacting the inner peripheral side surface of the vertical frame 20. Further, when the end surface 505 of the outdoor auxiliary material 502a is parallel to the indoor / outdoor direction, the outdoor auxiliary material 502a is shorter than the interval between the left and right vertical frames 20 in order to allow the outdoor auxiliary material 502a to be detachable. Thus, it is necessary to provide a certain amount of clearance. However, if the outdoor auxiliary member 502a is rotated and attached, the clearance becomes unnecessary, and the contact surface 506 of the end part 503 is further provided with the outdoor auxiliary material. Since the end surface 505 of the material 502a is inclined to face the end surface 505 of the outdoor auxiliary material 502a and the abutting surface 506 of the end part 503 can be brought into close contact with each other. improves. In addition, the relationship between the end part component 503 and the lower frame auxiliary material 502 or the vertical frame 20 is the same as in the case of the fourth embodiment. When the lower frame auxiliary member 502 is divided into two parts in this way, the outdoor left member 502aL and the indoor left member 502bL or the outdoor side can be removed without removing the shoji by moving the inner and outer shoji to one of the left and right. The right member 502aR and the indoor right member 502bR can be attached and detached.
本発明は、上記の実施形態に限定されない。たとえば、下枠補助材を左右方向や室内外方向に分割する場合、何個に分割してもよい。また、端部部品に、下枠補助材のアングル片と一体となるような突出部を形成してもよい。
The present invention is not limited to the above embodiment. For example, when the lower frame auxiliary material is divided in the left-right direction or the indoor / outdoor direction, it may be divided into any number. Moreover, you may form the protrusion part integrated with the angle piece of a lower frame auxiliary | assistant material in an edge part component.
