本発明は、障子が周囲の一縁部を支点に回動して開口部を開閉するサッシに関する。
The present invention relates to a sash in which a shoji is rotated around a peripheral edge to open and close an opening.
従来、突き出し窓等の開き窓においては、図７に示すように、蝶番９０を用いて障子９１を枠９２に取付けている。蝶番９０は、障子９１と枠９２とにそれぞれビス９３ａ，９３ｂで固定しているが、蝶番９０には障子９１の自重や風圧による強い力が加わり、さらに排煙突出し窓においてはダンパーによる下向きの付勢力も掛かり、ビス９３ａ，９３ｂだけでこれらの力を負担しなければならないので、ビス９３ａ，９３ｂの本数が必然的に多くなり（通常、一つの蝶番につき障子と枠にそれぞれ５本ずつのビスで固定している）、そのため障子９１を枠９２に取付ける際の作業性が非常に悪い。また蝶番を介して障子を枠に取付ける際には、図８（ａ）に示すように、蝶番９０をビス９３ａで障子９１に先に取付けてから、図８（ｂ）に示すように、作業者が障子９１を支持して蝶番９０を枠９２の内周見込み面に押し付けながら、見込み方向及び左右方向の位置調整を行わなければならないため、取付け作業が容易に行えなかった。
Conventionally, in an opening window such as a protruding window, a shoji 91 is attached to a frame 92 using a hinge 90 as shown in FIG. The hinge 90 is fixed to the shoji 91 and the frame 92 with screws 93a and 93b, respectively. However, the hinge 90 is subjected to a strong force due to the weight of the shoji 91 and the wind pressure, and further, the smoke is protruded and the window is faced downward by a damper. Since the urging force is also applied and these forces must be borne only by the screws 93a and 93b, the number of the screws 93a and 93b inevitably increases (usually five hinges and one frame for each hinge). Therefore, workability when attaching the shoji 91 to the frame 92 is very poor. When the shoji is attached to the frame via the hinge, as shown in FIG. 8 (a), the hinge 90 is first attached to the shoji 91 with the screw 93a, and then the work is performed as shown in FIG. 8 (b). Since the person must support the shoji 91 and press the hinge 90 against the prospective inner circumferential surface of the frame 92, the position adjustment in the prospective direction and the left-right direction must be performed, so that the mounting operation cannot be easily performed.
本発明は以上に述べた実情に鑑み、障子を枠に取付ける際の作業性が良好なサッシの提供を目的とする。
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a sash having good workability when attaching a shoji to a frame.
上記の課題を達成するために請求項１記載の発明によるサッシは、枠と障子と蝶番とを備え、蝶番は、障子側部材と枠側部材とを軸で回動自在に連結したものであり、障子は、蝶番の障子側部材の端部が係合する係合部を有し、枠は、蝶番の枠側部材の端部が係合する係合部を有し、蝶番の障子側部材は、障子の係合部に端部を係合すると共に障子の外周見込み面に固定してあり、蝶番の枠側部材は、枠の係合部に端部を係合すると共に枠の内周見込み面に固定してあることを特徴とする。
In order to achieve the above object, a sash according to the invention described in claim 1 includes a frame, a shoji, and a hinge, and the hinge is a pivotal connection between the shoji side member and the frame side member. The shoji has an engaging portion with which an end of the hinge side member of the hinge is engaged, and the frame has an engaging portion with which the end of the frame side member of the hinge is engaged. Is engaged with the engaging portion of the shoji and fixed to the expected outer surface of the shoji, and the frame side member of the hinge engages the end with the engaging portion of the frame and the inner periphery of the frame. It is fixed to the prospective surface.
請求項２記載の発明によるサッシは、請求項１記載の発明の構成に加え、蝶番は、軸が室外側寄り又は室内側寄りに設けてあり、枠側部材は、軸に近い方の端部が枠の係合部に係合していることを特徴とする。
In the sash according to the second aspect of the invention, in addition to the configuration of the first aspect of the invention, the hinge is provided with the shaft closer to the outdoor side or the indoor side, and the frame side member is the end portion closer to the shaft. Is engaged with the engaging portion of the frame.
請求項３記載の発明によるサッシは、請求項１又は２記載の発明の構成に加え、枠はタイト材ホルダーを有し、タイト材ホルダーと内周見込み面との間に蝶番の枠側部材が係合していることを特徴とする。
The sash according to the invention of claim 3 has the structure of the invention of claim 1 or 2, the frame has a tight material holder, and the frame side member of the hinge is between the tight material holder and the inner peripheral prospective surface. It is characterized by being engaged.
請求項４記載の発明によるサッシは、請求項１，２又は３記載の発明の構成に加え、蝶番は、枠側部材の枠の係合部に係合する端部が内周側に斜めに曲げてあることを特徴とする。
The sash according to the invention described in claim 4 has the structure of the invention described in claim 1, 2, or 3, and the hinge is configured so that the end portion engaged with the engaging portion of the frame of the frame side member is inclined obliquely toward the inner peripheral side It is bent.
請求項１記載の発明によるサッシは、障子と枠とに蝶番の係合部がそれぞれ設けてあり、これら係合部により障子の自重等を受けることで、蝶番を枠と障子に固定するビス等の本数を少なくすることができるため、障子を枠に取付ける際の作業性が良好である。また蝶番を障子及び枠に取付ける際に、蝶番の端部を障子及び枠の係合部に係合させることで蝶番が位置決めされるから、ビス等で固定する作業が容易になる。
In the sash according to the first aspect of the present invention, hinges are respectively provided on the shoji and the frame, and screws or the like for fixing the hinge to the frame and the shoji by receiving the weight of the shoji by the engaging portions. Therefore, the workability when attaching the shoji to the frame is good. Further, when the hinge is attached to the shoji and the frame, the hinge is positioned by engaging the end portion of the hinge with the engaging portion of the shoji and the frame.
請求項２記載の発明によるサッシは、蝶番の軸が室外側寄り又は室内側寄りに設けられ、蝶番の枠側部材の軸に近い方の端部が枠の係合部に係合していることで、障子の自重等を枠の係合部に効率よく負担させられ、少ないビス等で安定して蝶番を枠に固定できる。
In the sash according to the second aspect of the present invention, the hinge shaft is provided closer to the outdoor side or the indoor side, and the end of the hinge closer to the shaft of the frame side member is engaged with the engaging portion of the frame. Thus, the weight of the shoji can be efficiently borne by the engaging portion of the frame, and the hinge can be stably fixed to the frame with a small number of screws.
請求項３記載の発明によるサッシは、枠のタイト材ホルダーと内周見込み面との間に蝶番の枠側部材を係合したので、枠に蝶番の係合部を別に設ける必要がないため、枠の形状を単純にでき、コストを下げることができる。
Since the sash according to the invention of claim 3 has engaged the frame side member of the hinge between the tight material holder of the frame and the inner peripheral prospective surface, it is not necessary to separately provide the hinge engaging portion on the frame. The shape of the frame can be simplified and the cost can be reduced.
請求項４記載の発明によるサッシは、蝶番の枠側部材の枠の係合部に係合する端部が内周側に斜めに曲げてあることで、障子を枠に取付ける際に、蝶番の枠側部材の端部を枠の係合部に係合させるのが容易になると共に、枠側部材を枠の内周見込み面に当接させると、枠側部材の曲がった端部が枠の係合部に突っ張り、蝶番のがたつきを防止できる。
The sash according to the invention described in claim 4 has an end portion that engages with the engaging portion of the frame side member of the hinge being bent obliquely toward the inner peripheral side, so that when the shoji is attached to the frame, While it becomes easy to engage the edge part of a frame side member with the engaging part of a frame, when the frame side member is made to contact | abut on the estimated inner peripheral surface of a frame, the curved edge part of a frame side member will become a frame's engagement part. Stretching on the engaging part can prevent the hinge from rattling.
本発明のサッシの一実施形態（排煙突出し窓）を示す縦断面図である。It is a longitudinal cross-sectional view which shows one Embodiment (smoke exhaust protrusion window) of the sash of this invention.
同サッシの横断面図である。It is a cross-sectional view of the sash.
同サッシの室外側正面図である。It is an outdoor front view of the sash.
障子を枠に取付ける際の手順を示す縦断面図であって、障子に蝶番を取付けるときの様子を示している。It is a longitudinal cross-sectional view which shows the procedure at the time of attaching a shoji to a frame, Comprising: The mode when attaching a hinge to a shoji is shown.
図４−１の続きであり、障子に固定した蝶番を枠に係合し、ビスで固定する様子を示している。FIG. 4 is a continuation of FIG. 4A, showing a state where a hinge fixed to a shoji is engaged with a frame and fixed with a screw.
（ａ）は蝶番の平面図、（ｂ）は蝶番の側面図である。(A) is a top view of a hinge, (b) is a side view of a hinge.
障子と枠の連結部の他の実施形態を示す縦断面図である。It is a longitudinal cross-sectional view which shows other embodiment of the connection part of a shoji and a frame.
従来の突出し窓の障子と上枠との連結部を示す縦断面図である。It is a longitudinal cross-sectional view which shows the connection part of the shoji of the conventional protruding window, and an upper frame.
従来の突出し窓において、蝶番により障子を枠に取付ける手順を示す縦断面図である。It is a longitudinal cross-sectional view which shows the procedure which attaches a shoji to a frame with a hinge in the conventional protruding window.
以下、本発明の実施の形態を図面に基づいて説明する。図１〜３は、本発明のサッシの一実施形態であって、ビル用の排煙突出し窓に適用した実施形態を示している。本サッシは、躯体開口部に取付けられる枠１と、枠１内に開閉自在に設けた障子２とを備えている。障子２は、図１，３に示すように、上框１０が左右方向に間隔をおいて配置した２個の蝶番３，３により上枠７と連結され、蝶番３の軸６を支点として室外側に回動して開くようになっている。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1-3 is one Embodiment of the sash of this invention, Comprising: The embodiment applied to the smoke extraction protrusion window for buildings is shown. The sash includes a frame 1 attached to the housing opening and a shoji 2 provided in the frame 1 so as to be freely opened and closed. As shown in FIGS. 1 and 3, the shoji 2 is connected to the upper frame 7 by two hinges 3 and 3, which are spaced apart in the left-right direction, and the shaft 6 of the hinge 3 is used as a fulcrum. It is designed to rotate outward.
枠１は、アルミニウム合金の押出形材よりなる上枠７と下枠１２と左右の竪枠１３，１３とを四方枠組みして構成してある。上枠７は、図１に示すように、室外側の見付け面の下縁部に沿ってタイト材ホルダー８が室内側に突出する形で形成してあり、そのタイト材ホルダー８に水切りタイト材１４が下向きに取付けられ、水切りタイト材１４により上枠７と上框１０間の隙間を塞いでいる。上枠７は、内周見込み面１５がフラットに形成され、内周見込み面１５とタイト材ホルダー８との間に、蝶番３が係合する係合溝９が形成してある。係合溝９は、上枠７の内周見込み面１５と連続して室内側が開口するように形成され、係合溝９の溝幅は蝶番３の板厚よりも広くなっている。
The frame 1 is constituted by an upper frame 7 and a lower frame 12 made of an aluminum alloy extruded profile, and left and right eaves frames 13, 13. As shown in FIG. 1, the upper frame 7 is formed such that a tight material holder 8 protrudes indoors along the lower edge of the outdoor-side finding surface, and the tight material holder 8 has a draining tight material. 14 is attached downward, and the gap between the upper frame 7 and the upper rod 10 is closed by the draining tight material 14. In the upper frame 7, an expected inner peripheral surface 15 is formed flat, and an engaging groove 9 for engaging the hinge 3 is formed between the estimated inner peripheral surface 15 and the tight material holder 8. The engagement groove 9 is formed so as to open the interior side of the upper frame 7 in a continuous manner with the expected inner periphery 15, and the groove width of the engagement groove 9 is wider than the plate thickness of the hinge 3.
障子２は、アルミニウム合金の押出形材よりなる上框１０と下框１６と左右の竪框１７，１７とを四周框組みし、各框の内周側に形成された溝１８内にガラスパネル１９の周縁部を嵌め込んで固定したものとなっている。上框１０は、図１に示すように、外周見込み面２０の室内側端部に、先端が室外側に向けて曲がった鉤形の突起２１が設けてあり、該突起２１により蝶番３が係合する係合溝１１が形成されている。また、係合溝１１の室外側に凹部３０が形成されている。
The shoji 2 is formed by assembling the upper and lower halves 10 and 16 and the left and right ridges 17 and 17 made of an aluminum alloy extruded shape four times, and a glass panel is formed in a groove 18 formed on the inner peripheral side of each ridge. Nineteen peripheral edges are fitted and fixed. As shown in FIG. 1, the upper collar 10 is provided with a bowl-shaped protrusion 21 whose tip is bent toward the outdoor side at the indoor side end of the outer peripheral prospective surface 20. Engaging engagement grooves 11 are formed. A recess 30 is formed outside the engagement groove 11.
蝶番３は、図１，５に示すように、上枠７に取付けられる枠側部材４と、上框１０に取付けられる障子側部材５とを、軸６で回動自在に連結して構成してある。軸６は、室外側寄りの位置に設けてある。枠側部材４は、上部に室外側に延びる室外側延出部２２と、室内側に延びる室内側延出部２３とを面一状に有している。枠側部材４の室外側の端部４ａは、内周側に向けて斜めに曲げてあり、この部分が軸６の上方で上枠７の係合溝９内に上下方向に突っ張る形で係合している。室内側延出部２３には、図５（ａ）に示すように、室内側寄りの位置に左右方向に間隔をあけてビス挿通孔２４が２箇所設けてある。障子側部材５は、図５に示すように、左右方向に間隔をあけてビス挿通孔２５が２箇所設けてあり、室内側の端部５ａが内周側にオフセットするように少し曲がった形になっている。
As shown in FIGS. 1 and 5, the hinge 3 is configured by connecting a frame side member 4 attached to the upper frame 7 and a shoji side member 5 attached to the upper collar 10 so as to be rotatable by a shaft 6. It is. The shaft 6 is provided at a position closer to the outdoor side. The frame side member 4 has the outdoor side extension part 22 extended to the outdoor side in the upper part, and the indoor side extension part 23 extended to the indoor side in the same shape. The end 4a on the outdoor side of the frame side member 4 is bent obliquely toward the inner peripheral side, and this portion is engaged in a manner that it projects vertically in the engagement groove 9 of the upper frame 7 above the shaft 6. Match. As shown in FIG. 5A, the indoor side extension 23 is provided with two screw insertion holes 24 at a position closer to the indoor side with a space in the left-right direction. As shown in FIG. 5, the shoji-side member 5 is provided with two screw insertion holes 25 at intervals in the left-right direction, and is slightly bent so that the indoor side end 5 a is offset to the inner peripheral side. It has become.
障子２を枠１に取付ける際の手順を説明すると、まず図４−１（ａ）に示すように、蝶番３の障子側部材５の室内側端部５ａを上框１０の凹部３０から係合溝１１内に差し入れ、室外側に倒して障子側部材５を上框１０の外周見込み面２０に当接させる。そうすると図４−１（ｂ）に示すように、障子側部材５の室内側端部５ａが上框１０の係合溝１１の外周側に突き当たって係合し、障子側部材５ががたつかないように位置決めされる。このように、障子側部材５の室内側端部５ａを上框１０の凹部３０に差し入れ、室外側に倒すようにして係合溝１１に係合させることで、上框１０の見付け壁３１との間に室内側部材５を室内外方向にスライドさせるための隙間を設ける必要がない。その後、上方から２本のビス２６で障子側部材５を上框１０に固定する。ビス２６を捩じ込むと、障子側部材５の先端部５ａが上框１０の係合溝１１の外周側（突起２１）に密着するように突っ張り、これにより障子側部材５のがたつきが防止される。そうして蝶番３を上框１０に取付けた後、図４−２（ｃ）に示すように、蝶番３の枠側部材４を室内側に若干倒した状態で、その室外側端部４ａを上枠７の係合溝９に室内側から差し入れるようにして係合する。その際、蝶番３の枠側部材４の室外側端部４ａが内周側に少し曲がっており、且つ上枠７の係合溝９の溝幅が蝶番３の板厚よりも広いため、容易に係合させることができる。次に、障子２を持ち上げるようにして、蝶番３の枠側部材４の上面を上枠７の内周見込み面１５に突き当てると、図４−２（ｄ）に示すように、枠側部材４の室外側端部４ａが上枠７の係合溝９内で突っ張る形になり、この状態で枠側部材４の室内側を下方から２本のビス２７で上枠７に固定する。
The procedure for attaching the shoji 2 to the frame 1 will be described. First, as shown in FIG. 4A, the indoor side end 5a of the shoji side member 5 of the hinge 3 is engaged from the recess 30 of the upper collar 10. The sliding door side member 5 is brought into contact with the outer peripheral prospective surface 20 of the upper collar 10 by being inserted into the groove 11 and tilted outward. Then, as shown in FIG. 4B, the indoor side end 5a of the shoji side member 5 abuts against the outer peripheral side of the engaging groove 11 of the upper collar 10, and the shoji side member 5 is rattled. Positioned so that there is no. In this way, by inserting the indoor side end 5a of the shoji-side member 5 into the recess 30 of the upper collar 10 and engaging it with the engagement groove 11 so as to be tilted outward, the positioning wall 31 of the upper collar 10 and It is not necessary to provide a gap for sliding the indoor side member 5 in the indoor and outdoor directions. Thereafter, the shoji side member 5 is fixed to the upper collar 10 with the two screws 26 from above. When the screw 26 is screwed in, the front end portion 5a of the shoji side member 5 is stretched so as to be in close contact with the outer peripheral side (projection 21) of the engaging groove 11 of the upper collar 10, and thereby the shoji side member 5 is not rattled. Is prevented. Then, after attaching the hinge 3 to the upper collar 10, as shown in FIG. 4-2 (c), with the frame side member 4 of the hinge 3 slightly tilted to the indoor side, the outdoor end 4a is The upper frame 7 is engaged with the engaging groove 9 so as to be inserted from the indoor side. At that time, the outdoor side end 4a of the frame side member 4 of the hinge 3 is slightly bent toward the inner peripheral side, and the groove width of the engagement groove 9 of the upper frame 7 is wider than the plate thickness of the hinge 3, so that it is easy. Can be engaged. Next, when the shoji 2 is lifted and the upper surface of the frame side member 4 of the hinge 3 is brought into contact with the expected inner peripheral surface 15 of the upper frame 7, as shown in FIG. 4-2 (d), the frame side member 4, the outdoor side end 4 a is stretched in the engagement groove 9 of the upper frame 7. In this state, the indoor side of the frame side member 4 is fixed to the upper frame 7 with two screws 27 from below.
下枠１２の内周見込み面と下框１６の外周見込み面との間のスペースには、図１に示すように、滑車とワイヤー等よりなるオペレーター装置２８が設けてある。また、竪枠１３と竪框１７との間には、図２に示すように、ダンパー２９が取付けてある。障子２は、図示しない操作ボタンを操作することでダンパー２９の力で開き、オペレーター装置２８により障子２を閉めることができる。
As shown in FIG. 1, an operator device 28 including a pulley and a wire is provided in a space between the inner peripheral prospective surface of the lower frame 12 and the outer peripheral prospective surface of the lower rod 16. Also, a damper 29 is attached between the collar frame 13 and the collar 17 as shown in FIG. The shoji 2 can be opened by the force of the damper 29 by operating an operation button (not shown), and the shoji 2 can be closed by the operator device 28.
以上に述べたように本サッシは、上枠７と上框１０にそれぞれ設けた係合溝９，１１に蝶番３を係合しており、これら係合部により障子２の自重やダンパー２９の付勢力等の上下方向の力を受けるため、ビス２６，２７に掛かる負担が小さくなり、蝶番３を上枠７及び上框１０に止めるビス２６，２７の本数を、それぞれ２本ずつと少なくすることができる。そのため、障子２を枠１に取付ける際の作業性が良好になる。また、蝶番３を上框１０及び上枠７に取付ける際、蝶番３を係合溝９，１１に係合させながら行うことで蝶番３が位置決めされるから、ビス止めの作業がしやすい。さらに、上枠７と上框１０のビス孔の加工を少なくできる。
さらに本サッシは、蝶番３の軸６を室外側寄りに設けると共に、軸６のほぼ真上で蝶番３の室外側端部４ａを上枠７に係合しているため、障子１の自重等を上枠７の係合部に効率よく負担させられ、これによりビス２７に掛かる負担が一層小さくなるから、少ないビス２７で安定して蝶番３を上枠７に固定できる。しかも上枠７は、タイト材ホルダー８を利用して蝶番３を係合したので、上枠７に蝶番３の係合部を別に設ける必要がなく、上枠７の形状を単純にでき、コストを下げることができる。
さらに蝶番３は、枠側部材４の室外側端部４ａが内周側に斜めに曲げてあり、上枠７の係合溝９の溝幅が蝶番３の板厚よりも広くなっているため、障子２を枠１に取付ける際に、蝶番３の枠側部材４の室外側端部４ａを上枠７の係合溝９に係合させるのが容易になると共に、障子２を持ち上げるようにして枠側部材４の上面を上枠７の内周見込み面１５に当接させると、枠側部材４の曲がった端部４ａが上枠７の係合溝９内で突っ張るので、蝶番３のがたつきを防止できる。
As described above, this sash has the hinge 3 engaged with the engaging grooves 9 and 11 provided in the upper frame 7 and the upper collar 10, respectively. Since the vertical force such as urging force is received, the load applied to the screws 26 and 27 is reduced, and the number of screws 26 and 27 for holding the hinge 3 on the upper frame 7 and the upper rod 10 is reduced to two each. be able to. Therefore, workability when attaching the shoji 2 to the frame 1 is improved. Further, when the hinge 3 is attached to the upper rod 10 and the upper frame 7, the hinge 3 is positioned by engaging the hinge 3 with the engaging grooves 9 and 11, so that it is easy to fix the screw. Further, the processing of the screw holes in the upper frame 7 and the upper collar 10 can be reduced.
Further, in this sash, the shaft 6 of the hinge 3 is provided closer to the outdoor side, and the outdoor side end portion 4a of the hinge 3 is engaged with the upper frame 7 almost directly above the shaft 6, so that the weight of the shoji 1 etc. Is efficiently borne by the engaging portion of the upper frame 7, thereby further reducing the load applied to the screw 27, so that the hinge 3 can be stably fixed to the upper frame 7 with a small number of screws 27. Moreover, since the upper frame 7 is engaged with the hinge 3 using the tight material holder 8, it is not necessary to separately provide an engaging portion of the hinge 3 on the upper frame 7, the shape of the upper frame 7 can be simplified, and the cost is reduced. Can be lowered.
Further, the hinge 3 has an outer end 4a of the frame side member 4 bent obliquely toward the inner peripheral side, and the groove width of the engaging groove 9 of the upper frame 7 is wider than the plate thickness of the hinge 3. When the shoji 2 is attached to the frame 1, it is easy to engage the outdoor end 4 a of the frame-side member 4 of the hinge 3 with the engaging groove 9 of the upper frame 7, and lift the shoji 2. When the upper surface of the frame side member 4 is brought into contact with the estimated inner peripheral surface 15 of the upper frame 7, the bent end 4 a of the frame side member 4 stretches in the engagement groove 9 of the upper frame 7. It can prevent rattling.
図６は、障子２と枠１の連結部の他の実施形態であって、障子２が室内側に開く場合を示している。蝶番３は、先に述べた実施形態のものとは室外側と室内側が逆になっており、軸６が室内側寄りに設けてあり、枠側部材４の室内側端部４ｂが軸６の上方で上枠７の内周側面１５に設けた係合溝９に係合しており、室外側がビス２７で上枠７に固定してある。蝶番３の障子側部材５は、室外側の端部５ｂが上框１０の係合溝１１に係合している。
FIG. 6 shows another embodiment of the connecting portion between the shoji 2 and the frame 1 and shows a case where the shoji 2 opens to the indoor side. The hinge 3 has the outdoor side and the indoor side opposite to those of the embodiment described above, the shaft 6 is provided closer to the indoor side, and the indoor side end 4 b of the frame side member 4 is the shaft 6. The upper side is engaged with the engaging groove 9 provided on the inner peripheral side surface 15 of the upper frame 7, and the outdoor side is fixed to the upper frame 7 with screws 27. As for the shoji side member 5 of the hinge 3, the end portion 5b on the outdoor side is engaged with the engaging groove 11 of the upper collar 10.
本発明は以上に述べた実施形態に限定されない。蝶番３を配置する位置は、上枠７と上框１０間に限らず、下枠１２と下框１６間、竪枠１３と竪框１７間であってもよい。蝶番３は、ステンレスや鉄の板をプレス成形したものの他、アルミの押出形材で長尺に形成することもできる。障子２及び枠１に設けられる蝶番３の係合部の形態は、適宜変更することができる。蝶番３を枠１及び障子２に固定するのに、ビス以外の固着具（例えばリベット等）を使用することもできる。
The present invention is not limited to the embodiments described above. The position where the hinge 3 is arranged is not limited to between the upper frame 7 and the upper collar 10, but may be between the lower frame 12 and the lower collar 16, or between the collar frame 13 and the collar 17. The hinge 3 can be formed in a long shape by an aluminum extruded shape, in addition to a press-molded stainless or iron plate. The form of the engaging part of the hinge 3 provided in the shoji 2 and the frame 1 can be changed as appropriate. In order to fix the hinge 3 to the frame 1 and the shoji 2, a fixing tool (for example, a rivet) other than a screw can be used.
１ 枠
２ 障子
３ 蝶番
４ 枠側部材
４ａ 枠側部材の室外側端部
５ 障子側部材
５ａ 障子側部材の端部
６ 軸
７ 上枠
８ タイト材ホルダー
９ 上枠の係合溝（係合部）
１０ 上框
１１ 上框の係合溝（係合部）
１５ 上枠の内周見込み面
２０ 上框の外周見込み面
２６，２７ ビス
DESCRIPTION OF SYMBOLS 1 Frame 2 Shoji 3 Hinge 4 Frame side member 4a Outdoor side edge part of frame side member 5 Shoji side member 5a End part of shoji side member 6 Axis 7 Upper frame 8 Tight material holder 9 Engagement groove (engagement part of upper frame) )
10 Upper collar 11 Upper groove engagement groove (engagement part)
15 Expected inner circumference of upper frame 20 Expected outer circumference of upper collar 26,27 Screws
本発明は、障子が周囲の一縁部を支点に回動して開口部を開閉するサッシに関する。
The present invention relates to a sash in which a shoji is rotated around a peripheral edge to open and close an opening.
従来、突き出し窓等の開き窓においては、図７に示すように、蝶番９０を用いて障子９１を枠９２に取付けている。蝶番９０は、障子９１と枠９２とにそれぞれビス９３ａ，９３ｂで固定しているが、蝶番９０には障子９１の自重や風圧による強い力が加わり、さらに排煙突出し窓においてはダンパーによる下向きの付勢力も掛かり、ビス９３ａ，９３ｂだけでこれらの力を負担しなければならないので、ビス９３ａ，９３ｂの本数が必然的に多くなり（通常、一つの蝶番につき障子と枠にそれぞれ５本ずつのビスで固定している）、そのため障子９１を枠９２に取付ける際の作業性が非常に悪い。また蝶番を介して障子を枠に取付ける際には、図８（ａ）に示すように、蝶番９０をビス９３ａで障子９１に先に取付けてから、図８（ｂ）に示すように、作業者が障子９１を支持して蝶番９０を枠９２の内周見込み面に押し付けながら、見込み方向及び左右方向の位置調整を行わなければならないため、取付け作業が容易に行えなかった。
Conventionally, in an opening window such as a protruding window, a shoji 91 is attached to a frame 92 using a hinge 90 as shown in FIG. The hinge 90 is fixed to the shoji 91 and the frame 92 with screws 93a and 93b, respectively. However, the hinge 90 is subjected to a strong force due to the weight of the shoji 91 and the wind pressure, and further, the smoke is protruded and the window is faced downward by a damper. Since the urging force is also applied and these forces must be borne only by the screws 93a and 93b, the number of the screws 93a and 93b inevitably increases (usually five hinges and one frame for each hinge). Therefore, workability when attaching the shoji 91 to the frame 92 is very poor. When the shoji is attached to the frame via the hinge, as shown in FIG. 8 (a), the hinge 90 is first attached to the shoji 91 with the screw 93a, and then the work is performed as shown in FIG. 8 (b). Since the person must support the shoji 91 and press the hinge 90 against the prospective inner circumferential surface of the frame 92, the position adjustment in the prospective direction and the left-right direction must be performed, so that the mounting operation cannot be easily performed.
本発明は以上に述べた実情に鑑み、障子を枠に取付ける際の作業性が良好なサッシの提供を目的とする。
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a sash having good workability when attaching a shoji to a frame.
上記の課題を達成するために請求項１記載の発明によるサッシは、枠と障子と蝶番とを備え、蝶番は、障子側部材と枠側部材とを軸で回動自在に連結したものであり、蝶番の障子側部材は障子に固定され、蝶番の枠側部材は、室外側延出部と室内側延出部とを有し、室外側延出部と室内側延出部のうち障子が開放する際に障子が回動する一方側の延出部を枠に係合し、他方側の延出部を枠に当ててネジ止めしてあることを特徴とする。
In order to achieve the above object, a sash according to the invention described in claim 1 includes a frame, a shoji, and a hinge, and the hinge is a pivotal connection between the shoji side member and the frame side member. The hinge-side member of the hinge is fixed to the shoji, the frame-side member of the hinge has an outdoor extending portion and an indoor extending portion, and the shoji is out of the outdoor extending portion and the indoor extending portion. The extension part of one side which a shoji rotates when opening is engaged with a frame, and the extension part of the other side is applied to the frame, and is screwed .
請求項１記載の発明によるサッシは、蝶番の枠側部材に室外側延出部と室内側延出部とを有し、障子を枠に取付ける際に、室外側延出部と室内側延出部のうち障子が開放する際に障子が回動する一方側の延出部を枠に係合することで、蝶番を枠に位置決めできると共に、係合してからネジ止めするまで障子の荷重を枠の係合部に預けることができ、さらに障子を開き側に回動させると枠側部材のネジ止め箇所が露出してネジ止めがしやすくなるから、施工性が良い。
The sash according to the first aspect of the present invention has an outdoor side extension part and an indoor side extension part on the frame side member of the hinge, and when the shoji is attached to the frame, the outdoor side extension part and the indoor side extension part are provided. By engaging the extension part on one side where the shoji rotates when the shoji is released from the part, the hinge can be positioned on the frame and the load of the shoji is applied until it is screwed Since it can be deposited in the engaging portion of the frame, and when the shoji is further rotated to the open side, the screwing position of the frame side member is exposed and screwing is easy, so that the workability is good.
本発明のサッシの一実施形態（排煙突出し窓）を示す縦断面図である。It is a longitudinal cross-sectional view which shows one Embodiment (smoke exhaust protrusion window) of the sash of this invention.
同サッシの横断面図である。It is a cross-sectional view of the sash.
同サッシの室外側正面図である。It is an outdoor front view of the sash.
障子を枠に取付ける際の手順を示す縦断面図であって、障子に蝶番を取付けるときの様子を示している。It is a longitudinal cross-sectional view which shows the procedure at the time of attaching a shoji to a frame, Comprising: The mode when attaching a hinge to a shoji is shown.
図４−１の続きであり、障子に固定した蝶番を枠に係合し、ビスで固定する様子を示している。FIG. 4 is a continuation of FIG. 4A, showing a state where a hinge fixed to a shoji is engaged with a frame and fixed with a screw.
（ａ）は蝶番の平面図、（ｂ）は蝶番の側面図である。(A) is a top view of a hinge, (b) is a side view of a hinge.
障子と枠の連結部の他の実施形態を示す縦断面図である。It is a longitudinal cross-sectional view which shows other embodiment of the connection part of a shoji and a frame.
従来の突出し窓の障子と上枠との連結部を示す縦断面図である。It is a longitudinal cross-sectional view which shows the connection part of the shoji of the conventional protruding window, and an upper frame.
従来の突出し窓において、蝶番により障子を枠に取付ける手順を示す縦断面図である。It is a longitudinal cross-sectional view which shows the procedure which attaches a shoji to a frame with a hinge in the conventional protruding window.
以下、本発明の実施の形態を図面に基づいて説明する。図１〜３は、本発明のサッシの一実施形態であって、ビル用の排煙突出し窓に適用した実施形態を示している。本サッシは、躯体開口部に取付けられる枠１と、枠１内に開閉自在に設けた障子２とを備えている。障子２は、図１，３に示すように、上框１０が左右方向に間隔をおいて配置した２個の蝶番３，３により上枠７と連結され、蝶番３の軸６を支点として室外側に回動して開くようになっている。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1-3 is one Embodiment of the sash of this invention, Comprising: The embodiment applied to the smoke extraction protrusion window for buildings is shown. The sash includes a frame 1 attached to the housing opening and a shoji 2 provided in the frame 1 so as to be freely opened and closed. As shown in FIGS. 1 and 3, the shoji 2 is connected to the upper frame 7 by two hinges 3 and 3, which are spaced apart in the left-right direction, and the shaft 6 of the hinge 3 is used as a fulcrum. It is designed to rotate outward.
枠１は、アルミニウム合金の押出形材よりなる上枠７と下枠１２と左右の竪枠１３，１３とを四方枠組みして構成してある。上枠７は、図１に示すように、室外側の見付け面の下縁部に沿ってタイト材ホルダー８が室内側に突出する形で形成してあり、そのタイト材ホルダー８に水切りタイト材１４が下向きに取付けられ、水切りタイト材１４により上枠７と上框１０間の隙間を塞いでいる。上枠７は、内周見込み面１５がフラットに形成され、内周見込み面１５とタイト材ホルダー８との間に、蝶番３が係合する係合溝９が形成してある。係合溝９は、上枠７の内周見込み面１５と連続して室内側が開口するように形成され、係合溝９の溝幅は蝶番３の板厚よりも広くなっている。
The frame 1 is constituted by an upper frame 7 and a lower frame 12 made of an aluminum alloy extruded profile, and left and right eaves frames 13, 13. As shown in FIG. 1, the upper frame 7 is formed such that a tight material holder 8 protrudes indoors along the lower edge of the outdoor-side finding surface, and the tight material holder 8 has a draining tight material. 14 is attached downward, and the gap between the upper frame 7 and the upper rod 10 is closed by the draining tight material 14. In the upper frame 7, an expected inner peripheral surface 15 is formed flat, and an engaging groove 9 for engaging the hinge 3 is formed between the estimated inner peripheral surface 15 and the tight material holder 8. The engagement groove 9 is formed so as to open the interior side of the upper frame 7 in a continuous manner with the expected inner periphery 15, and the groove width of the engagement groove 9 is wider than the plate thickness of the hinge 3.
障子２は、アルミニウム合金の押出形材よりなる上框１０と下框１６と左右の竪框１７，１７とを四周框組みし、各框の内周側に形成された溝１８内にガラスパネル１９の周縁部を嵌め込んで固定したものとなっている。上框１０は、図１に示すように、外周見込み面２０の室内側端部に、先端が室外側に向けて曲がった鉤形の突起２１が設けてあり、該突起２１により蝶番３が係合する係合溝１１が形成されている。また、係合溝１１の室外側に凹部３０が形成されている。
The shoji 2 is formed by assembling the upper and lower halves 10 and 16 and the left and right ridges 17 and 17 made of an aluminum alloy extruded shape four times, and a glass panel is formed in a groove 18 formed on the inner peripheral side of each ridge. Nineteen peripheral edges are fitted and fixed. As shown in FIG. 1, the upper collar 10 is provided with a bowl-shaped protrusion 21 whose tip is bent toward the outdoor side at the indoor side end of the outer peripheral prospective surface 20. Engaging engagement grooves 11 are formed. A recess 30 is formed outside the engagement groove 11.
蝶番３は、図１，５に示すように、上枠７に取付けられる枠側部材４と、上框１０に取付けられる障子側部材５とを、軸６で回動自在に連結して構成してある。軸６は、室外側寄りの位置に設けてある。枠側部材４は、上部に室外側に延びる室外側延出部２２と、室内側に延びる室内側延出部２３とを面一状に有している。枠側部材４の室外側の端部４ａは、内周側に向けて斜めに曲げてあり、この部分が軸６の上方で上枠７の係合溝９内に上下方向に突っ張る形で係合している。室内側延出部２３には、図５（ａ）に示すように、室内側寄りの位置に左右方向に間隔をあけてビス挿通孔２４が２箇所設けてある。障子側部材５は、図５に示すように、左右方向に間隔をあけてビス挿通孔２５が２箇所設けてあり、室内側の端部５ａが内周側にオフセットするように少し曲がった形になっている。
As shown in FIGS. 1 and 5, the hinge 3 is configured by connecting a frame side member 4 attached to the upper frame 7 and a shoji side member 5 attached to the upper collar 10 so as to be rotatable by a shaft 6. It is. The shaft 6 is provided at a position closer to the outdoor side. The frame side member 4 has the outdoor side extension part 22 extended to the outdoor side in the upper part, and the indoor side extension part 23 extended to the indoor side in the same shape. The end 4a on the outdoor side of the frame side member 4 is bent obliquely toward the inner peripheral side, and this portion is engaged in a manner that it projects vertically in the engagement groove 9 of the upper frame 7 above the shaft 6. Match. As shown in FIG. 5A, the indoor side extension 23 is provided with two screw insertion holes 24 at a position closer to the indoor side with a space in the left-right direction. As shown in FIG. 5, the shoji-side member 5 is provided with two screw insertion holes 25 at intervals in the left-right direction, and is slightly bent so that the indoor side end 5 a is offset to the inner peripheral side. It has become.
障子２を枠１に取付ける際の手順を説明すると、まず図４−１（ａ）に示すように、蝶番３の障子側部材５の室内側端部５ａを上框１０の凹部３０から係合溝１１内に差し入れ、室外側に倒して障子側部材５を上框１０の外周見込み面２０に当接させる。そうすると図４−１（ｂ）に示すように、障子側部材５の室内側端部５ａが上框１０の係合溝１１の外周側に突き当たって係合し、障子側部材５ががたつかないように位置決めされる。このように、障子側部材５の室内側端部５ａを上框１０の凹部３０に差し入れ、室外側に倒すようにして係合溝１１に係合させることで、上框１０の見付け壁３１との間に室内側部材５を室内外方向にスライドさせるための隙間を設ける必要がない。その後、上方から２本のビス２６で障子側部材５を上框１０に固定する。ビス２６を捩じ込むと、障子側部材５の先端部５ａが上框１０の係合溝１１の外周側（突起２１）に密着するように突っ張り、これにより障子側部材５のがたつきが防止される。そうして蝶番３を上框１０に取付けた後、図４−２（ｃ）に示すように、蝶番３の枠側部材４を室内側に若干倒した状態で、その室外側端部４ａを上枠７の係合溝９に室内側から差し入れるようにして係合する。その際、蝶番３の枠側部材４の室外側端部４ａが内周側に少し曲がっており、且つ上枠７の係合溝９の溝幅が蝶番３の板厚よりも広いため、容易に係合させることができる。次に、障子２を持ち上げるようにして、蝶番３の枠側部材４の上面を上枠７の内周見込み面１５に突き当てると、図４−２（ｄ）に示すように、枠側部材４の室外側端部４ａが上枠７の係合溝９内で突っ張る形になり、この状態で枠側部材４の室内側を下方から２本のビス２７で上枠７に固定する。
The procedure for attaching the shoji 2 to the frame 1 will be described. First, as shown in FIG. 4A, the indoor side end 5a of the shoji side member 5 of the hinge 3 is engaged from the recess 30 of the upper collar 10. The sliding door side member 5 is brought into contact with the outer peripheral prospective surface 20 of the upper collar 10 by being inserted into the groove 11 and tilted outward. Then, as shown in FIG. 4B, the indoor side end 5a of the shoji side member 5 abuts against the outer peripheral side of the engaging groove 11 of the upper collar 10, and the shoji side member 5 is rattled. Positioned so that there is no. Thus, by inserting the indoor side end portion 5a of the shoji side member 5 into the concave portion 30 of the upper collar 10 and engaging with the engaging groove 11 so as to be tilted outward, It is not necessary to provide a gap for sliding the indoor side member 5 in the indoor and outdoor directions. Thereafter, the shoji side member 5 is fixed to the upper collar 10 with the two screws 26 from above. When the screw 26 is screwed in, the front end portion 5a of the shoji side member 5 is stretched so as to be in close contact with the outer peripheral side (projection 21) of the engaging groove 11 of the upper collar 10, and thereby the shoji side member 5 is not rattled. Is prevented. Then, after attaching the hinge 3 to the upper collar 10, as shown in FIG. 4-2 (c), with the frame side member 4 of the hinge 3 slightly tilted to the indoor side, the outdoor end 4a is The upper frame 7 is engaged with the engaging groove 9 so as to be inserted from the indoor side. At that time, the outdoor side end 4a of the frame side member 4 of the hinge 3 is slightly bent toward the inner peripheral side, and the groove width of the engagement groove 9 of the upper frame 7 is wider than the plate thickness of the hinge 3, so that it is easy. Can be engaged. Next, when the shoji 2 is lifted and the upper surface of the frame side member 4 of the hinge 3 is brought into contact with the expected inner peripheral surface 15 of the upper frame 7, as shown in FIG. 4-2 (d), the frame side member 4, the outdoor side end 4 a is stretched in the engagement groove 9 of the upper frame 7. In this state, the indoor side of the frame side member 4 is fixed to the upper frame 7 with two screws 27 from below.
下枠１２の内周見込み面と下框１６の外周見込み面との間のスペースには、図１に示すように、滑車とワイヤー等よりなるオペレーター装置２８が設けてある。また、竪枠１３と竪框１７との間には、図２に示すように、ダンパー２９が取付けてある。障子２は、図示しない操作ボタンを操作することでダンパー２９の力で開き、オペレーター装置２８により障子２を閉めることができる。
As shown in FIG. 1, an operator device 28 including a pulley and a wire is provided in a space between the inner peripheral prospective surface of the lower frame 12 and the outer peripheral prospective surface of the lower rod 16. Also, a damper 29 is attached between the collar frame 13 and the collar 17 as shown in FIG. The shoji 2 can be opened by the force of the damper 29 by operating an operation button (not shown), and the shoji 2 can be closed by the operator device 28.
以上に述べたように本サッシは、上枠７と上框１０にそれぞれ設けた係合溝９，１１に蝶番３を係合しており、これら係合部により障子２の自重やダンパー２９の付勢力等の上下方向の力を受けるため、ビス２６，２７に掛かる負担が小さくなり、蝶番３を上枠７及び上框１０に止めるビス２６，２７の本数を、それぞれ２本ずつと少なくすることができる。そのため、障子２を枠１に取付ける際の作業性が良好になる。また、蝶番３を上框１０及び上枠７に取付ける際、蝶番３を係合溝９，１１に係合させながら行うことで蝶番３が位置決めされるから、ビス止めの作業がしやすい。さらに、上枠７と上框１０のビス孔の加工を少なくできる。
さらに本サッシは、蝶番３の軸６を室外側寄りに設けると共に、軸６のほぼ真上で蝶番３の室外側端部４ａを上枠７に係合しているため、障子１の自重等を上枠７の係合部に効率よく負担させられ、これによりビス２７に掛かる負担が一層小さくなるから、少ないビス２７で安定して蝶番３を上枠７に固定できる。しかも上枠７は、タイト材ホルダー８を利用して蝶番３を係合したので、上枠７に蝶番３の係合部を別に設ける必要がなく、上枠７の形状を単純にでき、コストを下げることができる。
さらに蝶番３は、枠側部材４の室外側端部４ａが内周側に斜めに曲げてあり、上枠７の係合溝９の溝幅が蝶番３の板厚よりも広くなっているため、障子２を枠１に取付ける際に、蝶番３の枠側部材４の室外側端部４ａを上枠７の係合溝９に係合させるのが容易になると共に、障子２を持ち上げるようにして枠側部材４の上面を上枠７の内周見込み面１５に当接させると、枠側部材４の曲がった端部４ａが上枠７の係合溝９内で突っ張るので、蝶番３のがたつきを防止できる。
As described above, this sash has the hinge 3 engaged with the engaging grooves 9 and 11 provided in the upper frame 7 and the upper collar 10, respectively. Since the vertical force such as urging force is received, the load applied to the screws 26 and 27 is reduced, and the number of screws 26 and 27 for holding the hinge 3 on the upper frame 7 and the upper rod 10 is reduced to two each. be able to. Therefore, workability when attaching the shoji 2 to the frame 1 is improved. Further, when the hinge 3 is attached to the upper rod 10 and the upper frame 7, the hinge 3 is positioned by engaging the hinge 3 with the engaging grooves 9 and 11, so that it is easy to fix the screw. Further, the processing of the screw holes in the upper frame 7 and the upper collar 10 can be reduced.
Further, in this sash, the shaft 6 of the hinge 3 is provided closer to the outdoor side, and the outdoor side end portion 4a of the hinge 3 is engaged with the upper frame 7 almost directly above the shaft 6, so that the weight of the shoji 1 etc. Is efficiently borne by the engaging portion of the upper frame 7, thereby further reducing the load applied to the screw 27, so that the hinge 3 can be stably fixed to the upper frame 7 with a small number of screws 27. Moreover, since the upper frame 7 is engaged with the hinge 3 using the tight material holder 8, it is not necessary to separately provide an engaging portion of the hinge 3 on the upper frame 7, the shape of the upper frame 7 can be simplified, and the cost is reduced. Can be lowered.
Further, the hinge 3 has an outer end 4a of the frame side member 4 bent obliquely toward the inner peripheral side, and the groove width of the engaging groove 9 of the upper frame 7 is wider than the plate thickness of the hinge 3. When the shoji 2 is attached to the frame 1, it is easy to engage the outdoor end 4 a of the frame-side member 4 of the hinge 3 with the engaging groove 9 of the upper frame 7, and lift the shoji 2. When the upper surface of the frame side member 4 is brought into contact with the estimated inner peripheral surface 15 of the upper frame 7, the bent end 4 a of the frame side member 4 stretches in the engagement groove 9 of the upper frame 7. It can prevent rattling.
図６は、障子２と枠１の連結部の他の実施形態であって、障子２が室内側に開く場合を示している。蝶番３は、先に述べた実施形態のものとは室外側と室内側が逆になっており、軸６が室内側寄りに設けてあり、枠側部材４の室内側端部４ｂが軸６の上方で上枠７の内周側面１５に設けた係合溝９に係合しており、室外側がビス２７で上枠７に固定してある。蝶番３の障子側部材５は、室外側の端部５ｂが上框１０の係合溝１１に係合している。
FIG. 6 shows another embodiment of the connecting portion between the shoji 2 and the frame 1 and shows a case where the shoji 2 opens to the indoor side. The hinge 3 has the outdoor side and the indoor side opposite to those of the embodiment described above, the shaft 6 is provided closer to the indoor side, and the indoor side end 4 b of the frame side member 4 is the shaft 6. The upper side is engaged with the engaging groove 9 provided on the inner peripheral side surface 15 of the upper frame 7, and the outdoor side is fixed to the upper frame 7 with screws 27. As for the shoji side member 5 of the hinge 3, the end portion 5b on the outdoor side is engaged with the engaging groove 11 of the upper collar 10.
本発明は以上に述べた実施形態に限定されない。蝶番３を配置する位置は、上枠７と上框１０間に限らず、下枠１２と下框１６間、竪枠１３と竪框１７間であってもよい。蝶番３は、ステンレスや鉄の板をプレス成形したものの他、アルミの押出形材で長尺に形成することもできる。障子２及び枠１に設けられる蝶番３の係合部の形態は、適宜変更することができる。蝶番３を枠１及び障子２に固定するのに、ビス以外の固着具（例えばリベット等）を使用することもできる。
The present invention is not limited to the embodiments described above. The position where the hinge 3 is arranged is not limited to between the upper frame 7 and the upper collar 10, but may be between the lower frame 12 and the lower collar 16, or between the collar frame 13 and the collar 17. The hinge 3 can be formed in a long shape by an aluminum extruded shape, in addition to a press-molded stainless or iron plate. The form of the engaging part of the hinge 3 provided in the shoji 2 and the frame 1 can be changed as appropriate. In order to fix the hinge 3 to the frame 1 and the shoji 2, a fixing tool (for example, a rivet) other than a screw can be used.
１ 枠
２ 障子
３ 蝶番
４ 枠側部材
４ａ 枠側部材の室外側端部
５ 障子側部材
５ａ 障子側部材の端部
６ 軸
７ 上枠
８ タイト材ホルダー
９ 上枠の係合溝（係合部）
１０ 上框
１１ 上框の係合溝（係合部）
１５ 上枠の内周見込み面
２０ 上框の外周見込み面
２６，２７ ビス
DESCRIPTION OF SYMBOLS 1 Frame 2 Shoji 3 Hinge 4 Frame side member 4a Outdoor side edge part of frame side member 5 Shoji side member 5a End part of shoji side member 6 Axis 7 Upper frame 8 Tight material holder 9 Engagement groove (engagement part of upper frame) )
10 Upper collar 11 Upper groove engagement groove (engagement part)
15 Expected inner circumference of upper frame 20 Expected outer circumference of upper collar 26,27 Screws
