JPS6222623Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案は後付二重窓の内側サツシ取付構造に関
するものである。[Detailed Description of the Invention] The present invention relates to an inner sash mounting structure for retrofitted double-glazed windows.

外側サツシが既設されている躯体開口部に内側
サツシを後付けして成る後付二重窓において、内
側サツシを取付けるには枠組みした窓枠を躯体開
口部に取付けているのが通常である。 In retrofitted double-glazed windows in which an inner sash is retrofitted to an opening in the frame where an outer sash is already installed, the inner sash is usually attached by attaching a framed window frame to the opening in the frame.

しかしながら、躯体開口部の開口寸法は各地方
によつて種々異なるので、それぞれの躯体開口の
開口寸法に合致した内側サツシを製作しなければ
ならず、部品点数が多くなつて製作及び在庫管理
等が面倒となつてしまう。 However, since the opening dimensions of the frame openings vary depending on the region, it is necessary to manufacture an inner sash that matches the opening dimensions of each frame opening, which increases the number of parts and makes production and inventory management difficult. It becomes a hassle.

また、内側サツシと躯体開口部との間に生ずる
隙間を閉塞するために内側サツシの内側に化粧部
分を形成して前記隙間を閉塞するようにすると、
前記隙間につめ材を設ける作業がし難くなつて内
側サツシが躯体開口部内において微動し易く強固
に取付けできないとの不具合を有する。 Further, in order to close the gap that occurs between the inner sash and the opening of the frame, a decorative part is formed inside the inner sash to close the gap,
It becomes difficult to provide the pawl material in the gap, and the inner sash tends to move slightly within the opening of the frame, making it impossible to securely attach it.

本考案は上記の事情に鑑みなされたものであ
り、その目的は躯体開口部の開口寸法が異なつて
も確実強固に取付けできるようにした後付二重窓
の内側サツシを提供することである。 The present invention was made in view of the above circumstances, and its purpose is to provide an inner sash for a retrofitted double-glazed window that can be reliably and firmly attached even if the opening dimensions of the frame opening differ.

以下図面を参照して本考案の実施例を説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.

第１図は縦断面図、第２図は横断面図であり、
躯体開口部Ａは鴨居１と敷居２と左右柱３，３と
により方形状となつている。 FIG. 1 is a longitudinal cross-sectional view, and FIG. 2 is a cross-sectional view.
The frame opening A has a rectangular shape with a lintel 1, a sill 2, and left and right pillars 3, 3.

Ｂは躯体開口部Ａの外側に取付けた外側サツシ
であり、上枠４、下枠５、左右竪枠６，６より方
形状となつた窓枠７を躯体開口部Ａの外側に取付
け、その窓枠７内に外、内障子８，９を引き違い
に装着してある。 B is an outer sash attached to the outside of the frame opening A, and a window frame 7, which has a rectangular shape from the upper frame 4, lower frame 5, and left and right vertical frames 6, 6, is attached to the outer side of the frame opening A, and Inside the window frame 7, outer and inner shoji screens 8 and 9 are installed alternately.

Ｃは躯体開口部Ａの内側に取付けた内側サツシ
であり、上枠１０、下枠１１、左右竪枠１２，１
２より方形状に枠組みされた窓枠１３内に外、内
障子１４，１５を装着したものである。 C is an inner sash installed inside the frame opening A, which includes an upper frame 10, a lower frame 11, and left and right vertical frames 12, 1.
Outer and inner shoji screens 14 and 15 are mounted inside a window frame 13 which is framed in a rectangular shape.

前記上枠１０は上枠本体１６と取付体１７とを
備え、上枠本体１６は外内上レール１８，１９を
有する横壁２０と両端部の外内壁２１，２２とに
より上向開口１６′を形成したものであり、該外
壁２１には気密材取付溝２３が形成され、内壁２
２は内側縦片２２ａと略Ｃ字状に折曲した外側縦
片２２ｂとにより中空形状となつて化粧上縁とな
つている。 The upper frame 10 includes an upper frame main body 16 and a mounting body 17, and the upper frame main body 16 has an upward opening 16' formed by a horizontal wall 20 having outer and inner upper rails 18 and 19, and outer and inner walls 21 and 22 at both ends. An airtight material mounting groove 23 is formed on the outer wall 21, and an airtight material mounting groove 23 is formed on the inner wall 2.
2 has a hollow shape formed by an inner vertical piece 22a and an outer vertical piece 22b bent into a substantially C-shape, and forms a decorative upper edge.

前記取付体１７は横壁２４と両端部の外内壁２
５，２６とにより前記上向開口１６′内に嵌合す
る下向コ字状となり、外壁２５には前記外壁内面
２１ａに接しかつ下向段部２１ｂと当接する折曲
片２５ａが形成してあり、内壁２６にはビス孔２
７が形成され、かつ前記内側縦片２２ａに当接し
て取付体１７は上枠本体１６に対して上下方向に
移動自在となつていると共に、前記内側縦片２２
ａの取付体１７より上方位置には気密材取付溝２
８が形成されている。 The mounting body 17 has a horizontal wall 24 and outer and inner walls 2 at both ends.
5 and 26 form a downward U-shape that fits into the upward opening 16', and the outer wall 25 is formed with a bent piece 25a that contacts the outer wall inner surface 21a and the downward stepped portion 21b. There is a screw hole 2 in the inner wall 26.
7 is formed, and the mounting body 17 is movable in the vertical direction with respect to the upper frame body 16 by contacting the inner vertical piece 22a, and
Airtight material mounting groove 2 is located above the mounting body 17 of a.
8 is formed.

また、下枠１１は下枠本体３０と取付体３１と
を備え、下枠本体３０は外内下レール３２，３３
を有する中空横壁３４と中空形状の化粧下縁３５
とより成り、中空横壁３４には下向の連結吊下片
３６と当接片３７とが一体形成されかつ外側には
下向溝３８と気密材取付溝３９とが形成してあ
る。 Further, the lower frame 11 includes a lower frame main body 30 and a mounting body 31, and the lower frame main body 30 has outer and inner lower rails 32, 33.
A hollow side wall 34 and a hollow decorative lower edge 35
A downward connecting hanging piece 36 and an abutting piece 37 are integrally formed on the hollow side wall 34, and a downward groove 38 and an airtight material mounting groove 39 are formed on the outside.

前記取付体３１は横壁４０の両端部に凹条溝４
１と立上り壁４２とを一体形成したものであり、
凹条溝４１内に連結吊下片３６の球状先端部３６
ａが回動可能に嵌合されて取付体３１と下枠本体
３０とは上下方向に回動自在に連結され、立上り
壁４２が下向溝３８内に嵌合するように位置決め
してあると共に、化粧下縁３５の内壁３５ａには
気密材取付溝５３が形成してある。 The mounting body 31 has grooves 4 at both ends of the horizontal wall 40.
1 and a rising wall 42 are integrally formed,
A spherical tip 36 of the connecting hanging piece 36 is installed in the concave groove 41.
a is rotatably fitted, and the mounting body 31 and the lower frame main body 30 are connected rotatably in the vertical direction, and the rising wall 42 is positioned so as to fit into the downward groove 38. An airtight material mounting groove 53 is formed in the inner wall 35a of the decorative lower edge 35.

また、前記竪枠１２は竪枠本体４３と取付体４
４とを備え、竪枠本体４３は中空竪壁４５と中空
形状の化粧竪縁４６とより成り、中空竪壁４５に
は横向溝４７と気密材取付溝４８とが形成してあ
る。 Further, the vertical frame 12 includes a vertical frame main body 43 and a mounting body 4.
4, the vertical frame body 43 is composed of a hollow vertical wall 45 and a hollow decorative vertical edge 46, and the hollow vertical wall 45 is formed with a horizontal groove 47 and an airtight material mounting groove 48.

前記取付体４４は縦壁４９の両端部に外、内折
曲壁５０，５１を形成したコ字状となり、外折曲
壁５０が横向溝４７内に嵌入し、内折曲壁５１が
化粧竪縁４６の内壁４６ａに接して取付体４４は
竪枠本体４３に対して移動自在となつていると共
に、前記内壁４６ａには気密材取付溝５２が形成
してある。 The mounting body 44 has a U-shape in which outer and inner bent walls 50 and 51 are formed at both ends of a vertical wall 49, with the outer bent wall 50 fitting into the horizontal groove 47 and the inner bent wall 51 forming a decorative part. The mounting body 44 is in contact with an inner wall 46a of the vertical edge 46 and is movable relative to the vertical frame body 43, and an airtight material mounting groove 52 is formed in the inner wall 46a.

しかして、内側サツシＣを取付けるには上、
下、左右竪枠１０，１１，１２，１２を枠組み連
結し、下枠本体３０の連結吊下片３６を取付体３
１の凹条溝４１内に嵌合して上下回動自在に連結
する。 However, in order to install the inner satsushi C,
The lower, left and right vertical frames 10, 11, 12, 12 are connected as a frame, and the connecting hanging pieces 36 of the lower frame main body 30 are attached to the mounting body 3.
It fits into the concave groove 41 of No. 1 and is connected so as to be vertically movable.

この状態で取付体３１の横壁４０を敷居２の内
面２ａにビス５４で固着する。この時、取付体３
１の外向段部３１ａが敷居内側面２ｂと当接して
位置決めされる。 In this state, the horizontal wall 40 of the mounting body 31 is fixed to the inner surface 2a of the sill 2 with screws 54. At this time, the mounting body 3
The outward step portion 31a of 1 is positioned in contact with the inner side surface 2b of the sill.

そして、窓枠１３全体を取付体３１と下枠本体
３０との枢着連結部を支点として上方に回動し窓
枠１３全体を躯体開口部Ａ内に建込む。 Then, the entire window frame 13 is rotated upward about the pivot joint between the mounting body 31 and the lower frame main body 30 as a fulcrum, and the entire window frame 13 is built into the frame opening A.

これにより、下枠本体３０の下向溝３８内に取
付体３１の立上り壁４２が嵌合固定され下枠本体
３０が取付体３１に連結固定されるので、下枠１
１は敷居２に強固に位置決めされて取付けられ
る。 As a result, the rising wall 42 of the attachment body 31 is fitted and fixed in the downward groove 38 of the lower frame body 30, and the lower frame body 30 is connected and fixed to the attachment body 31, so that the lower frame 1
1 is firmly positioned and attached to the sill 2.

一方、各気密材取付溝２３，３９，４８に取付
けた気密材５５，５６，５７は既設外側サツシＢ
の上下左右竪枠４，５，６，６の内壁４ａ，５
ａ，６ａ，６ａにそれぞれ圧着して気密保持する
とともに位置決めされる。 On the other hand, the airtight materials 55, 56, 57 installed in the respective airtight material mounting grooves 23, 39, 48 are attached to the existing outer sash B.
Inner walls 4a, 5 of vertical frames 4, 5, 6, 6
a, 6a, and 6a, respectively, to maintain airtightness and position.

そして、取付体２４及び取付体４４を鴨居１の
内面１ａ及び柱３の内面３ａにビス５８，５９で
それぞれ取付ける。なお、図示してないが上枠本
体１６及び竪枠本体４３にはビス螺合用の孔がそ
れぞれ形成され、ビス螺合後に盲栓で閉塞され
る。 Then, the mounting body 24 and the mounting body 44 are attached to the inner surface 1a of the lintel 1 and the inner surface 3a of the pillar 3 with screws 58 and 59, respectively. Although not shown, holes for screwing are formed in the upper frame main body 16 and the vertical frame main body 43, respectively, and are closed with blind plugs after screwing.

以上の様に、窓枠１３全体を、取付体３１と下
枠本体３０との枢着連結部を支点として上方に回
動して躯体開口部Ａ内に建込むので、位置決めし
て簡単に取付けできる。 As described above, the entire window frame 13 is pivoted upward using the pivot connection between the mounting body 31 and the lower frame body 30 as a fulcrum and is built into the frame opening A, so it is easy to position and install. can.

なお、下枠本体３０と取付体３１とを蝶番等で
上下回動自在に枢着連結しても良いと共に、第３
図に示す如く下枠１１の取付体３１の立上り壁４
２に既設外側サツシ下枠５の内壁５ａに当接する
突片４２ａを形成し、取付体３１の位置決めをす
るようにしても良い。 Note that the lower frame main body 30 and the mounting body 31 may be pivotally connected using a hinge or the like so as to be movable up and down.
As shown in the figure, the rising wall 4 of the mounting body 31 of the lower frame 11
2 may be formed with a protruding piece 42a that abuts on the inner wall 5a of the existing outer sash lower frame 5 to position the mounting body 31.

また、上枠１０は上枠本体１６に取付体１７を
上下動自在に取付けたものであるから、窓枠１３
を建込む時には取付体１７を上枠本体１６側（下
方）に移動させた状態とし、窓枠１３を躯体開口
部Ａに建込んだ後に取付体１７をビス５８で鴨居
内面１ａに固着して上枠１０を鴨居１に取付けれ
ば良い。 Further, since the upper frame 10 has a mounting body 17 attached to the upper frame main body 16 so as to be movable up and down, the window frame 13
When erecting, the mounting body 17 is moved to the upper frame main body 16 side (downward), and after the window frame 13 is erected in the frame opening A, the mounting body 17 is fixed to the lintel inner surface 1a with screws 58. It is sufficient to attach the upper frame 10 to the lintel 1.

この時、取付体１７は上枠本体１６と鴨居内面
の間隔に応じて上方に移動するので、躯体開口部
Ａの上下寸法（鴨居１と敷居２との間隔）がある
程度異なつても上枠１０を鴨居１に固着でき、開
口部Ａの上下方向の開口寸法が異なつても窓枠１
３を取付けできると共に、内側に化粧部分を形成
した窓枠でも強固に取付けできる。 At this time, the mounting body 17 moves upward according to the distance between the upper frame body 16 and the inner surface of the lintel, so even if the vertical dimensions of the frame opening A (the distance between the lintel 1 and the sill 2) differ to some extent, the upper frame 17 can be fixed to the lintel 1, and the window frame 1 can be fixed even if the vertical opening dimensions of the opening A are different.
3 can be attached, and even a window frame with a decorative part formed inside can be firmly attached.

したがつて、内側サツシＣの窓枠１３を共通化
できて部品点数を減らし製作及び在庫管理等が容
易となる。 Therefore, the window frame 13 of the inner sash C can be made common, reducing the number of parts and making manufacturing and inventory management easier.

なお、実施例においては取付体１７を固着後に
上枠本体１６の横壁２０よりビス６３をビス孔２
７に螺合して上枠本体１６と取付体１７とを強固
に連結している。 In addition, in the embodiment, after fixing the mounting body 17, the screw 63 is inserted into the screw hole 2 from the side wall 20 of the upper frame main body 16.
7 to firmly connect the upper frame main body 16 and the mounting body 17.

また、竪枠１２も同様に下枠本体４３に取付体
４４を左右移動自在に連結した構造であるから、
窓枠１３を躯体開口部Ａ内に建込んだ後に取付体
４４を竪枠本体４３と柱内面３ａとの間隔に応じ
て左右移動してビス５９で固着すれば良いので、
躯体開口部Ａの左右方向の開口寸法（左右柱間の
間隔）がある程度異なつても取付けでき、前述と
同様に内側サツシＣの窓枠１３を共通化できて部
品点数を減らし製作及び在庫管理等が容易となる
と共に、内側に化粧部分を形成した窓枠でも強固
に取付けできる。 In addition, since the vertical frame 12 has a structure in which the mounting body 44 is connected to the lower frame main body 43 so as to be movable from side to side,
After installing the window frame 13 in the frame opening A, the mounting body 44 can be moved left and right according to the distance between the vertical frame body 43 and the inner surface of the column 3a and fixed with the screws 59.
It can be installed even if the horizontal opening dimensions (distance between the left and right pillars) of the frame opening A differ to some extent, and as mentioned above, the window frame 13 of the inner sash C can be shared, reducing the number of parts and manufacturing and inventory management. Not only is it easy to install the window frame, but it can also be firmly attached to a window frame with a decorative part formed on the inside.

なお、実施例においては外折曲壁５１と内壁４
６ａとをビス６４で連結して強固に連結してあ
る。 In addition, in the embodiment, the outer bending wall 51 and the inner wall 4
6a and are firmly connected by screws 64.

また、実施例によれば上下左右竪枠１０，１
１，１２には化粧縁２２，３５，４６が形成さ
れ、躯体開口部Ａとの取付部を覆つているから外
観が美しいと共に、各化粧縁気密材取付溝２８，
５３，５２に取付けた気密材６０，６１，６２が
鴨居内側面１ｂ、敷居内側面２ｂ、柱内側面３ｂ
にそれぞれ接しているので、前記取付部内に異物
が浸入することを防止できる。 Further, according to the embodiment, the vertical frames 10, 1
1 and 12 are formed with decorative edges 22, 35, and 46, which cover the attachment part with the body opening A, giving a beautiful appearance, and each decorative edge airtight material mounting groove 28,
The airtight materials 60, 61, 62 attached to the lintels 53, 52 are attached to the inside surface 1b of the lintel, the inside surface 2b of the sill, and the inside surface 3b of the pillar.
Since they are in contact with each other, it is possible to prevent foreign matter from entering the mounting portion.

また、竪枠１２は第４図に示す如く構成しても
良い。 Further, the vertical frame 12 may be configured as shown in FIG.

つまり、下枠本体４３を中空縦壁４５と化粧竪
縁４６とを有し、中空縦壁４５に気密材取付溝４
８を形成した形状とし、取付体４４を縦壁４９と
外内折曲壁５０，５１とによりコ字状とし、外折
曲壁５０を気密材取付溝底部４８に直接当接し、
内折曲壁５１を内壁４６ａに当接してある。 That is, the lower frame main body 43 has a hollow vertical wall 45 and a decorative vertical edge 46, and the hollow vertical wall 45 has an airtight material mounting groove 4.
8, the mounting body 44 is made into a U-shape by a vertical wall 49 and outer and inner bent walls 50, 51, and the outer bent wall 50 is in direct contact with the airtight material mounting groove bottom 48,
The inwardly bent wall 51 is in contact with the inner wall 46a.

また、第５図に示す如く、内折曲壁５１にビス
孔６５を形成し、このビス孔６５にビス６４を竪
枠本体４３より螺合して連結しても良い。 Alternatively, as shown in FIG. 5, a screw hole 65 may be formed in the inwardly bent wall 51, and a screw 64 may be screwed into the screw hole 65 from the vertical frame body 43 for connection.

また、第６図のように竪枠本体４３と取付体４
４との間に弾性材７０を設けても良い。 In addition, as shown in FIG. 6, the vertical frame body 43 and the mounting body 4
4, an elastic material 70 may be provided between the two.

本考案は以上の様になり、内側サツシＣの窓枠
１３を構成する上枠１０と竪枠１２の取付体１７
と４４は、上枠本体１６の上向開口１６′と竪枠
本体４３の横向溝４７内に上下及び左右動自在に
嵌合してあるから、窓枠１３を躯体開口部Ａの内
面に取付ける際には取付体１７，４４を上枠本体
１６、竪枠本体４３に対して内方に移動して躯体
開口部Ａに干渉しないようにでき、しかも取付体
１７，４４は上向開口１６′、横向溝４７に嵌合
して外れたりしないので、窓枠１３を躯体開口部
Ａ内に簡単に挿入でき、しかも挿入した後には取
付体１７，４４を上枠本体１７、竪枠本体４３に
対して上下及び左右に移動して躯体開口部Ａの内
面に密着して連結できる。 The present invention is as described above, and the mounting body 17 of the upper frame 10 and the vertical frame 12 that constitute the window frame 13 of the inner sash C is
and 44 are fitted into the upward opening 16' of the upper frame body 16 and the horizontal groove 47 of the vertical frame body 43 so as to be movable vertically and horizontally, so that the window frame 13 can be attached to the inner surface of the frame opening A. In such a case, the mounting bodies 17, 44 can be moved inward with respect to the upper frame body 16 and the vertical frame body 43 so as not to interfere with the frame opening A, and the mounting bodies 17, 44 can be moved inwardly with respect to the upper frame body 16 and the vertical frame body 43 so as not to interfere with the frame opening A. Since the window frame 13 fits into the horizontal groove 47 and does not come off, the window frame 13 can be easily inserted into the frame opening A, and after insertion, the mounting bodies 17 and 44 can be attached to the upper frame body 17 and the vertical frame body 43. On the other hand, it can be moved up and down and left and right to tightly connect to the inner surface of the body opening A.

したがつて、躯体開口部Ａの内面に内側サツシ
Ｃを簡単に取付けできると共に、開口の大きさが
若干異なる躯体開口部Ａの内面にも同一寸法の内
側サツシＣを取付けできて内側サツシを共通化で
きて部品点数を減らし、製作及び在庫管理等が容
易となる。 Therefore, the inner sash C can be easily attached to the inner surface of the frame opening A, and the inner sash C of the same size can be attached to the inner surface of the structure opening A whose opening size is slightly different, so that the inner sash C can be shared. This reduces the number of parts and makes manufacturing and inventory management easier.

また、上枠本体１６、下枠本体３０、竪枠本体
４３には中空形状の上、下、竪化粧縁が一体形成
してあるから、それぞれの剛性を大にできると共
に、躯体開口部Ａと各取付体との間を閉塞して室
内側より目視できないようにでき、見栄えの良い
二重窓を構成できる。 In addition, since the upper frame body 16, the lower frame body 30, and the vertical frame body 43 have hollow upper, lower, and vertical decorative edges integrally formed, the rigidity of each can be increased, and the opening A of the frame body It is possible to close the space between each mounting body so that it cannot be seen from the indoor side, and to construct a good-looking double-glazed window.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案の実施例を示すものであり、第１
図は縦断面図、第２図は横断面図、第３図は下枠
取付部の他の実施例を示す縦断面図、第４図及び
第５図並びに第６図は竪枠取付部のそれぞれ異な
る他の実施例を示す横断面図である。 Ａは躯体開口部、Ｂは外側サツシ、Ｃは内側サ
ツシ、１０は上枠、１１は下枠、１２は竪枠、１
６は上枠本体、１７は取付体、３０は下枠本体、
３１は取付体。 The drawings show an embodiment of the present invention.
The figure is a vertical sectional view, FIG. 2 is a horizontal sectional view, FIG. 3 is a vertical sectional view showing another embodiment of the lower frame attachment part, and FIGS. 4, 5, and 6 are of the vertical frame attachment part. FIG. 7 is a cross-sectional view showing other different embodiments. A is the frame opening, B is the outer sash, C is the inner sash, 10 is the upper frame, 11 is the lower frame, 12 is the vertical frame, 1
6 is the upper frame body, 17 is the mounting body, 30 is the lower frame body,
31 is the mounting body.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 外側サツシＢが既設された躯体開口部Ａの内側
に内側サツシＣを後付けして成る二重窓におい
て、前記内側サツシＣの窓枠１３を上枠１０と下
枠１１と左右の竪枠１２，１２より方形状に形成
すると共に、その上枠１０を上向開口１６′と中
空形状の化粧上縁を有する上枠本体１６と、その
上向開口１６′内に上下動自在に嵌合した取付体
１７とより構成し、前記下枠１１を取付体３１上
に中空形状の化粧下縁３５を有する下枠本体３０
を連結した構成とすると共に、前記竪枠１２を横
向溝４７と中空形状の化粧竪縁４６を有する竪枠
本体４３と、その横向溝４７に左右動自在に嵌合
した取付体４４とより構成し、各取付体１７，３
１，４４を前記躯体開口部Ａの内面にそれぞれ連
結して化粧上縁と化粧下縁３５と化粧竪縁４６を
躯体開口部Ａの室内側面と対向させたことを特徴
とする後付二重窓の内側サツシ取付構造。 In a double-glazed window in which an inner sash C is retrofitted inside a frame opening A in which an outer sash B is already installed, the window frame 13 of the inner sash C is divided into an upper frame 10, a lower frame 11, and left and right vertical frames 12, 12, and the upper frame body 16 has an upward opening 16' and a hollow decorative upper edge, and the upper frame body 16 is fitted into the upward opening 16' so as to be vertically movable. A lower frame main body 30 comprising a lower frame 17 and a hollow decorative lower edge 35 on the mounting body 31.
The vertical frame 12 is composed of a vertical frame main body 43 having a horizontal groove 47 and a hollow decorative vertical edge 46, and a mounting body 44 fitted into the horizontal groove 47 so as to be movable left and right. and each mounting body 17, 3
1 and 44 are connected to the inner surface of the frame opening A, respectively, so that the decorative upper edge, the lower decorative edge 35, and the decorative vertical edge 46 face the indoor side surface of the frame opening A. Inside window sash mounting structure.