JP2004191024A - Opening part sealing member for insulated casing and method of manufacturing insulated casing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seal member capable of being inexpensively manufactured, and saving a space in carrying and storing. <P>SOLUTION: The final shape of the seal member is a rectangular frame shape along an opening edge of an opening part. A strip-shaped sheet material 45 is formed as a primary article. A central part of the sheet material 45 is provided with a cut line 46 of which both ends are closed. V-shaped outer cut parts 47 are formed outside of both ends of the cut line 46, and an approximately V-shaped inner cut part 48 is formed on an intermediate position of the cut line 46. A hand is inserted into the cut line 46 to expand the cut line 46 while elastically bending a hinge part 49 as a bottom part of each of cut parts 47, 48, and side edges 47a, 48a of the cut parts 47, 48 are abutted to each other when the cut line is expanded until a longitudinal part 41 and a lateral part 42 adjacent to each other are at right angles to each other, whereby the rectangular frame-shaped seal member formed by alternately connecting the longitudinal part 41 and the lateral part 42 at right angles is formed. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、断熱箱体の開口部に取付台を取り付ける場合に用いるシール部材、並びに断熱箱体の製造方法に関する。
【０００２】
【従来の技術】
従来、冷蔵庫における冷凍装置等の設置構造の一例として、図１１に記載されたものが知られている（例えば、特許文献１参照）。これは、断熱箱体からなる冷蔵庫本体１側では、天井部分に冷却器室２が設けられるとともに、その天井面に開口部３が形成されている。一方、上記の開口部３を塞いで載置可能な断熱性の取付台４が備えられ、上面に、圧縮機、凝縮器及び凝縮器ファン等からなる冷凍装置５が、また下面に、冷凍装置５と冷媒配管により循環接続された冷却器６がそれぞれ取り付けられてユニット化されている。
そして、冷却器６を冷却器室２内に入れつつ取付台４を開口部３を塞いで載置することで組み立てられ、稼働時には、冷凍装置５とともに庫内ファン７を駆動すると、庫内ファン７により引かれた庫内空気が冷却器６付近を通過することで冷気が生成され、この冷気が吹出口から貯蔵室８に向けて循環送風されることによって、貯蔵室８内が冷却されるようになっている。
【０００３】
一方上記構造のものでは、冷却器室２内の断熱性を確保するために、開口部３の上面の口縁に、ゴム製等の枠状のシール部材９を貼り付け、このシール部材９上に取付台４の下面の周縁を載せることで、開口部３と取付台４との間をシールしている。
従来このシール部材９は、歩留まり等を考慮して、母材であるシート材から例えば長短２本の帯状の縁辺部９ａ，９ｂを切り出し、これを図１２に示すように、端部を突き合わせつつ長方形の枠状に配置し、突き合わせ端同士を接着することで製品として完成していた。
【０００４】
【特許文献１】
特開２００１−２７２１４７公報
【０００５】
【発明が解決しようとする課題】
しかしながら従来のシール部材９は、四つ角の部分で接着作業をする必要があることから、工数が掛かってコスト高に繋がり、また、形状が中央に大きなスペースを持った枠状であるために嵩張り、運搬や保管等に際して大きく場所を取るという問題があった。
本発明は上記のような事情に基づいて完成されたものであって、その目的は、安価に製造でき、また運搬や保管等に際して省スペース化を図ることができるシール部材を提供するところにある。
【０００６】
【課題を解決するための手段】
上記の目的を達成するための手段として、請求項１の発明は、断熱箱体の周壁に形成された開口部には冷却装置等を設けた取付台が塞いで取り付けられるものにおいて、前記開口部の口縁に張設されて前記取付台との間をシールすることに用いられるシール部材であって、一次形成品としての弾性材料からなるシート材には、両側に縁辺部となる部分を形成すべく両端が閉じた切込線が入れられるとともに、この切込線の両端の外側に対応する外縁と、前記切込線の途中位置とにＶ字形をなす切欠部が形成されており、このシート材を、前記各切欠部の底の部分を弾性的に曲げ変形つつ前記切込線から広げ、かつ前記各切欠部の側縁同士を合わせることにより、前記開口部の口縁に沿った枠状に形成されている構成としたところに特徴を有する。
【０００７】
請求項２の発明は、請求項１に記載のものにおいて、前記切欠部の互いに合わせられる側縁には、抜け止め状態に嵌合可能な凹凸部が形成されているところに特徴を有する。
請求項３の発明は、請求項１または請求項２に記載のものにおいて、前記シート材が、独立気泡構造の発泡合成ゴム材または発泡合成樹脂材により形成されているところに特徴を有する。
【０００８】
請求項４の発明に係る断熱箱体の製造方法は、断熱箱体の周壁に形成された開口部には冷却装置等を設けた取付台が塞いで取り付けられるものにおいて、一次形成品としての弾性材料からなるシート材を備え、このシート材には、両側に縁辺部となる部分を形成すべく両端が閉じた切込線が入れられるとともに、この切込線の両端の外側に対応する外縁と、前記切込線の途中位置とにＶ字形をなす切欠部が形成されており、このシート材を、前記各切欠部の底の部分を弾性的に曲げ変形つつ前記切込線から広げ、かつ前記各切欠部の側縁同士を合わせることにより、前記開口部の口縁に沿った枠状をなすシール部材を形成し、このシール部材を前記開口部の口縁に張設したのち、前記取付台をシール部材上に載せて取り付けるところに特徴を有する。
【０００９】
【発明の作用及び効果】
＜請求項１及び請求項４の発明＞
一次形成品としてのシート材を切欠部の底の部分を曲げつつ切込線から広げ、また各切欠部の側縁同士を合わせることで、開口部の口縁に沿った枠状をなすシール部材が形成される。このシール部材は引き続いて開口部の口縁に接着等によって貼られて用いられる。
一次形成品の状態では、言わば閉じられた単なるシート材であって、張り付けの現場で初めて枠状に広げられるのであるから、運搬や保管等に際して省スペース化を図ることができる。各縁辺部は予め繋がった状態にあって、縁辺部間を接着する必要が無いから、工数を減じてコスト低減を図ることができる。また、別体のものを突き合わせて接着する場合と比べて、予め繋がっていることでシール性により優れたものとなる。
【００１０】
＜請求項２の発明＞
各切欠部の側縁同士を合わせた際に、凹凸部が嵌合して抜け止め状態に接合され、ひいては広がった所定の枠状に形状保持されるから、引き続いて開口部の口縁に接着等によって貼る作業を簡単にかつスムーズに行うことができる。
＜請求項３の発明＞
シール材が非通気性を保持しつつ弾力性に富んだものとなり、開口部の口縁や取付台に良く密着して、よりシール性を高めることができる。
【００１１】
【発明の実施の形態】
以下、本発明の実施形態を添付図面に基づいて説明する。
＜第１実施形態＞
本発明の第１実施形態を図１ないし図８によって説明する。まず、図１及び図２によって、本実施形態の冷蔵庫の全体構造を説明する。
符号１０は冷蔵庫本体であって、内外の箱体内に断熱材１１の充填された前面開口の断熱箱体から構成されており、４本の脚１２で支持されているとともに、内部が貯蔵室１３となっている。貯蔵室１３内には、棚柱１４に設けられた棚受部材を介して棚網１４ａが複数段に設置できるようになっている。貯蔵室１３の前面開口は上下に仕切られて２つの出入口１５が形成され、各出入口１５には断熱扉１６が観音開き式に装着されている。
【００１２】
冷蔵庫本体１０の上面には、側壁１８で覆われた上面開放の機械室１９が設けられている。一方、貯蔵室１３の奥側の天井部分には、ドレンパンを兼ねたエアダクト２１が設けられ、その上方に冷却器室２２が形成されている。冷却器室２２の天井壁２２ａには、長方形をなす開口部２４が形成されている。一方、この開口部２４よりも一回り大きな断熱性の取付台２５が備えられ、開口部２４を塞いで載置可能とされている。
取付台２５の上面には、図３にも示すように、圧縮機２７、凝縮器２８及び凝縮器ファン２９等からなる冷凍装置２６と、電装箱３０等が取り付けられ、一方下面には、冷凍装置２６と冷媒配管により循環接続された冷却器３２が取り付けられてユニット化されている。
【００１３】
取付台２５は、冷却器３２を冷却器室２２内に入れつつ、開口部２４の上面を塞いで載置される。そして稼働時には、冷凍装置２６とともに冷却器室２２内に装備された庫内ファン３４を駆動すると、吸込口３５を通して庫内ファン３４により引かれた庫内空気が、冷却器３２付近を通過することで冷気が生成され、この冷気が吹出口３６から貯蔵室１３に向けて循環送風される。また、図示しない庫内センサにより庫内温度が検知され、庫内温度に応じて冷凍装置２６と庫内ファン３４の運転と停止とが制御されて、庫内温度が略一定の冷却温度に維持されるようになっている。
【００１４】
さて、上記した開口部２４の上面側の口縁にはシール部材４０が貼られ、このシール部材４０上に取付台２５の下面の周縁が載せられることで、開口部２４と取付台２５との間をシールするようになっている。
シール部材４０について詳細に説明する。このシール部材４０の完成形状は、図４及び図８に示すように、開口部２４の口縁に沿った長方形の枠状であって、より詳細には、所定幅を持った２本ずつ長辺部４１と短辺部４２とを交互に直角に連結した形状となっている。
【００１５】
このシール部材４０は、後記するように、開口部２４の口縁に貼られる段になって初めて、長方形の枠状に形成され、まず一次形成品として、図５に示すように、帯状のシート材４５が形成される。
このシート材４５は詳細には、独立気泡構造の発泡合成ゴム材からなり、全体としては、完成品としてのシール部材４０における長辺部４１若しくは短辺部４２の幅の２倍の幅を持ち、同じく完成品としてのシール部材４０における長辺部４１の外縁側の長さ寸法Ａと短辺部４２の外縁側の長さ寸法Ｂとを加えた長さ（Ａ＋Ｂ）を有する帯状をなしている。
【００１６】
シート材４５の幅方向と長さ方向の中心には、両端が閉じた切込線４６が入れられている。この切込線４６は、完成品としてのシール部材４０における長辺部４１の内縁側の長さ寸法ａと短辺部４２の内縁側の長さ寸法ｂに、後記する内側切欠部４８の底辺の長さ寸法ｃを加えた長さ（ａ＋ｂ＋ｃ）を有している。
シート材４５の長さ方向の両端部には、Ｖ字形の外側切欠部４７が形成されている。この外側切欠部４７は詳細には、シート材４５の全幅を底辺とした直角二等辺三角形をなしており、外側切欠部４７の底の部分が切込線４６の端部とは離間していて、この部分がヒンジ部４９とされている。
【００１７】
また、切込線４６で切断された両切断面には、上記の外側切欠部４７よりも一回り小さいＶ字形をなす内側切欠部４８が対称位置に形成されている。より詳細には、図５の下側の切断面の内側切欠部４８は、その底の部分が、シート材４５における同図の左端から短辺部４２の外縁側の長さ寸法Ｂだけ入り込んだ位置に来るように、また、反対側の切断面の内側切欠部４８は、その底の部分が、シート材４５における同図の右端から同じく短辺部４２の外縁側の長さ寸法Ｂだけ入り込んだ位置に来るように、それぞれ形成されている。
両内側切欠部４８の底の部分は、シート材４５の外側縁の手前に留まっており、この部分が同じくヒンジ部４９となっている。
【００１８】
続いて、本実施形態の作用を説明する。
シール部材４０を組み付け現場に搬入する場合は、図５に示す帯状のシート材４５の形態で搬入される。組み付け現場では、シート材４５の切込線４６に手を入れ、４つのヒンジ部４９を弾性的に曲げながら切込線４６から広げると、図６に示すように扁平な平行四辺形から、図７に示すように、さらに広がった平行四辺形に変形し、隣り合う長辺部４１と短辺部４２とが直角をなすまで広げられると、図８に示すように、各切欠部４７，４８の側縁４７ａ，４８ａ同士も合わさって、長辺部４１と短辺部４２とが交互に直角に連結された長方形の枠状をなすシール部材４０が形成される。
【００１９】
一方、冷却器室２２の天井壁２２ａの開口部２４における上側の口縁には、予め接着材が塗布されていて、上記のように長方形の枠状に形成されたシール部材４０が、開口部２４の上側の口縁に沿って貼り付けられる。
続いて、冷凍装置２６、冷却器３２等を取り付けた取付台２５が、その下面の周縁をシール部材４０の上に載せつつ開口部２４を塞ぎ、取付台２５を天井壁２２ａにねじ等で止めることにより、シール部材４０が弾性的に圧縮され、これにより、開口部２４と取付台２５との間のシールが取られ、冷却器室２２内が外部から断熱された状態とされる。
【００２０】
以上のように本実施形態のシール部材４０は、製造時では、言わば閉じられた単なる帯状のシート材４５であって、貼り付け作業を行う現場で初めて枠状に広げられるのであるから、運搬や保管等に際して省スペース化を図ることができる。また、枠の長辺部４１と短辺部４２とは予め繋がった状態にあって、長辺部４１と短辺部４２間を接着する必要が無いから、作業工数の削減が図れて、コスト低減を実現することができる。
【００２１】
＜第２実施形態＞
図９及び図１０は、本発明の第２実施形態を示す。第２実施形態に係るシール部材４０ａでは、一次形成品としてのシート材４５ａが形成された状態において、外側切欠部４７の一対の側縁４７ａに、互いに嵌合する凸部５０と凹部５１とが形成されている。凸部５０は、円の外周部の一部を弓形に切除したような形状であって、基端側の幅寸法が狭められている。凹部５１も同形状であって、入口の幅寸法が狭められている。
なお、図示はしないが、内側切欠部４８の両側縁４８ａにも、同様の凸部５０と凹部５１とが形成されている。
【００２２】
この第２実施形態では、シート材４５ａが切込線４６から広げられ、図１０に示すように、隣り合う長辺部４１と短辺部４２とが直角をなすまで広げられて、切欠部４７，４８の側縁４７ａ，４８ａ同士が合わさることで長方形の枠状に形成された際、切欠部４７，４８の両側縁４７ａ，４８ａの凸部５０と凹部５１とが緊密に嵌まり合い、凸部５０の基端が凹部５１の入口に引っ掛かることで抜け止めされる。
このように各切欠部４７，４８の側縁４７ａ，４８ａ同士が抜け止め状態に接合されることで、シール部材４０ａは広がった長方形の枠状に形状保持されるから、引き続いてシール部材４０ａを冷却器室２２の天井壁２２ａにおける開口部２４の口縁に貼り付ける作業を、簡単にかつスムーズに行うことができる。
【００２３】
＜他の実施形態＞
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
（１）切欠部の形状（切欠角度）や形成個数等を変えることで、三角形や五角形以上の多角形をなす枠状にも形成することが可能である。
（２）第２実施形態に示した抜け止め状態に嵌合する凸部と凹部との形状は、ありとあり溝のような形状であってもよい。
（３）シール部材の素材としては、独立気泡構造の合成樹脂材であってもよく、またシール性と弾力性とを備える限り、他のゴム材や合成樹脂材を用いてもよい。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る冷蔵庫の全体構造を示す縦断面図
【図２】機械室を示す平面図
【図３】取付台の設置部分の分解断面図
【図４】取付台を設置する前の機械室の平面図
【図５】シート材の一部切欠平面図
【図６】シート材を広げる途中の一部切欠平面図
【図７】シート材をさらに広げた状態の一部切欠平面図
【図８】シール部材の形成完了状態の一部切欠平面図
【図９】第２実施形態に係るシート材の部分平面図
【図１０】そのシール部材の形成完了状態の部分平面図
【図１１】従来例に係る取付台の設置部分の分解断面図
【図１２】そのシール部材の平面図
【符号の説明】
１０…冷蔵庫本体 ２２…冷却器室 ２２ａ…（冷却器室２２の）天井壁 ２４…開口部 ２５…取付台 ２６…冷凍装置 ３２…冷却器 ４０…シール部材
４１…長辺部 ４２…短辺部 ４５…シート材（一次形成品） ４６…切込線
４７…外側切欠部 ４７ａ…（外側切欠部４７の）側縁 ４８…内側切欠部
４８ａ…（内側切欠部４８の）側縁 ４９…ヒンジ部 ４０ａ…シール部材 ４５ａ…シート材（一次形成品） ５０…凸部 ５１…凹部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a seal member used when a mounting base is attached to an opening of a heat insulating box, and a method of manufacturing the heat insulating box.
[0002]
[Prior art]
BACKGROUND ART Conventionally, as an example of an installation structure of a refrigerator or the like in a refrigerator, one shown in FIG. 11 is known (for example, see Patent Document 1). In the refrigerator main body 1 composed of an insulated box, a cooler room 2 is provided in a ceiling portion, and an opening 3 is formed in the ceiling surface. On the other hand, a heat insulating mount 4 is provided which can be placed to close the opening 3, and a refrigerating device 5 including a compressor, a condenser and a condenser fan is provided on the upper surface, and a refrigerating device 5 is provided on the lower surface. 5 and a cooler 6 circulated by a refrigerant pipe are attached to each other to form a unit.
Then, it is assembled by placing the mounting stand 4 with the opening 3 closed while the cooler 6 is placed in the cooler room 2. In operation, when the internal fan 7 is driven together with the refrigerating device 5, the internal fan is Cooling air is generated by the air in the refrigerator drawn by 7 passing near the cooler 6, and the cool air is circulated and blown from the outlet to the storage room 8, thereby cooling the inside of the storage room 8. It has become.
[0003]
On the other hand, in the above-described structure, a frame-shaped sealing member 9 made of rubber or the like is attached to the rim of the upper surface of the opening 3 in order to secure heat insulation in the cooler chamber 2. By mounting the peripheral edge of the lower surface of the mounting base 4 on the base, the gap between the opening 3 and the mounting base 4 is sealed.
Conventionally, this sealing member 9 cuts out, for example, two long and short strip-shaped edge portions 9a and 9b from a sheet material as a base material in consideration of a yield and the like, and assembles the end portions as shown in FIG. The product was completed by arranging it in a rectangular frame shape and bonding the butted ends together.
[0004]
[Patent Document 1]
JP 2001-272147 A
[Problems to be solved by the invention]
However, the conventional sealing member 9 requires the bonding work at the four corners, which leads to an increase in man-hours and cost, and a bulky shape because the shape is a frame shape having a large space in the center. However, there is a problem that a large space is required for transportation and storage.
The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a seal member that can be manufactured at low cost and that can save space during transportation and storage. .
[0006]
[Means for Solving the Problems]
As means for achieving the above object, the invention according to claim 1 is characterized in that a mounting base provided with a cooling device or the like is closed and attached to an opening formed in a peripheral wall of the heat insulating box, A sealing member which is used to seal the space between the mounting table and the outer periphery of the mounting member. A cut line with both ends closed is inserted as much as possible, and a V-shaped notch is formed at an outer edge corresponding to the outside of both ends of the cut line and at an intermediate position of the cut line. The sheet material is expanded from the cut line while elastically bending and deforming the bottom portion of each notch, and the side edges of each notch are aligned to form a frame along the edge of the opening. The feature is that it is configured as a shape .
[0007]
A second aspect of the present invention is characterized in that, in the first aspect, a concave / convex portion that can be fitted in a retaining state is formed on a side edge of the cutout portion that is aligned with each other.
According to a third aspect of the present invention, in the first or second aspect, the sheet material is formed of a foamed synthetic rubber material or a foamed synthetic resin material having a closed cell structure.
[0008]
According to a fourth aspect of the present invention, there is provided a method for manufacturing a heat insulating box, wherein a mounting base provided with a cooling device or the like is closed and attached to an opening formed on a peripheral wall of the heat insulating box. A sheet material made of a material is provided.In this sheet material, a cut line with both ends closed is formed to form a portion to be an edge on both sides, and an outer edge corresponding to the outside of both ends of the cut line is formed. A V-shaped notch is formed at an intermediate position of the cut line, and the sheet material is expanded from the cut line while elastically bending and deforming a bottom portion of each cut portion, and By joining the side edges of the notches, a frame-shaped sealing member is formed along the edge of the opening, and the sealing member is stretched over the edge of the opening, and then the mounting is performed. The feature is that the base is mounted on the seal member and attached. To.
[0009]
Function and effect of the present invention
<Inventions of Claims 1 and 4>
A sheet member as a primary formed product is bent from the cut line while bending the bottom portion of the cutout portion, and by joining the side edges of each cutout portion, a frame-shaped sealing member is formed along the edge of the opening. Is formed. This seal member is subsequently used by being adhered to the edge of the opening by bonding or the like.
In the state of the primary formed product, it is a so-called closed sheet material, which can be spread in a frame shape for the first time at the attaching site, so that space can be saved during transportation and storage. Since the edges are connected in advance and there is no need to bond between the edges, the number of steps can be reduced and cost can be reduced. In addition, compared to the case where separate components are butt-bonded, the connection is made in advance, so that the sealing performance is more excellent.
[0010]
<Invention of Claim 2>
When the side edges of each notch are joined together, the concave and convex parts are fitted and joined in a state that prevents them from coming off, and the shape is maintained in a widened frame shape. The work of pasting can be performed easily and smoothly.
<Invention of Claim 3>
The sealing material has high elasticity while maintaining non-breathability, and can be more closely adhered to the edge of the opening and the mounting base, thereby further improving the sealing performance.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
<First embodiment>
A first embodiment of the present invention will be described with reference to FIGS. First, the overall structure of the refrigerator of the present embodiment will be described with reference to FIGS.
Reference numeral 10 denotes a refrigerator main body, which is constituted by a heat-insulating box having a front opening filled with heat-insulating materials 11 inside and outside of the box, supported by four legs 12, and having a storage room 13 inside. It has become. In the storage room 13, a shelf network 14 a can be installed in a plurality of stages via a shelf receiving member provided on a shelf 14. The front opening of the storage room 13 is vertically divided to form two entrances and exits 15, and a heat insulation door 16 is attached to each entrance 15 in a double-door manner.
[0012]
On the upper surface of the refrigerator main body 10, a machine room 19 which is covered with a side wall 18 and has an open upper surface is provided. On the other hand, an air duct 21 also serving as a drain pan is provided in a ceiling part on the back side of the storage room 13, and a cooler room 22 is formed above the air duct 21. A rectangular opening 24 is formed in the ceiling wall 22 a of the cooler room 22. On the other hand, a heat insulating mount 25 which is slightly larger than the opening 24 is provided, and can be placed with the opening 24 closed.
As shown in FIG. 3, a refrigerating device 26 including a compressor 27, a condenser 28, a condenser fan 29, and the like, and an electrical box 30 are mounted on the upper surface of the mounting table 25. A cooler 32 that is circulated and connected to the device 26 by a refrigerant pipe is attached and unitized.
[0013]
The mounting table 25 is placed so as to cover the upper surface of the opening 24 while putting the cooler 32 into the cooler room 22. During operation, when the in-compartment fan 34 provided in the cooler room 22 is driven together with the refrigerating device 26, the in-compartment air drawn by the in-compartment fan 34 through the suction port 35 passes near the cooler 32. The cool air is circulated and blown from the outlet 36 toward the storage room 13. Further, the inside temperature is detected by a not-shown inside sensor, and the operation and stop of the refrigerating device 26 and the inside fan 34 are controlled in accordance with the inside temperature, so that the inside temperature is maintained at a substantially constant cooling temperature. It is supposed to be.
[0014]
A sealing member 40 is attached to the upper edge of the opening 24 described above, and the peripheral edge of the lower surface of the mounting table 25 is placed on the sealing member 40. The space is sealed.
The seal member 40 will be described in detail. As shown in FIGS. 4 and 8, the completed shape of the seal member 40 is a rectangular frame shape along the edge of the opening 24, and more specifically, two long frames each having a predetermined width. The sides 41 and the short sides 42 are alternately connected at right angles.
[0015]
As will be described later, this seal member 40 is formed in a rectangular frame shape only when it is attached to the edge of the opening 24, and firstly, as a primary formed product, as shown in FIG. The material 45 is formed.
Specifically, the sheet material 45 is made of a foamed synthetic rubber material having a closed-cell structure, and has a width twice as large as the width of the long side portion 41 or the short side portion 42 of the seal member 40 as a finished product as a whole. In the same manner, a belt member having a length (A + B) having the length A of the outer edge side of the long side portion 41 and the length dimension B of the outer edge side of the short side portion 42 in the completed sealing member 40 is formed. I have.
[0016]
At the center in the width direction and the length direction of the sheet material 45, a cut line 46 having both ends closed is formed. The cut line 46 has a length a of the inner edge of the long side 41 and a length b of the inner edge of the short side 42 in the seal member 40 as a finished product, and the bottom of the inner notch 48 described later. Has a length (a + b + c) obtained by adding the length dimension c of
V-shaped outer cutouts 47 are formed at both ends in the length direction of the sheet material 45. In detail, the outer notch 47 has a right-angled isosceles triangle with the entire width of the sheet material 45 as the base, and the bottom of the outer notch 47 is separated from the end of the cut line 46. This portion is a hinge 49.
[0017]
On both cut surfaces cut by the cut lines 46, V-shaped inner notches 48, which are slightly smaller than the outer notches 47, are formed at symmetrical positions. More specifically, the bottom of the inner cutout portion 48 of the lower cut surface in FIG. 5 has a length B inserted into the sheet material 45 from the left end in FIG. The bottom portion of the inner cutout 48 of the opposite cut surface is also inserted into the sheet material 45 by the length B of the outer edge side of the short side portion 42 from the right end in FIG. Each is formed so that it comes to a position.
The bottom portions of both inner cutouts 48 remain short of the outer edges of the sheet material 45, and these portions also serve as hinge portions 49.
[0018]
Subsequently, the operation of the present embodiment will be described.
When the seal member 40 is carried into the assembly site, it is carried in the form of a band-like sheet material 45 shown in FIG. At the assembly site, the user inserts his hand into the cut line 46 of the sheet material 45 and expands the four hinge portions 49 from the cut line 46 while elastically bending the four hinge portions 49, as shown in FIG. As shown in FIG. 7, when the shape is further expanded into a parallelogram and the adjacent long side portion 41 and short side portion 42 are extended to form a right angle, as shown in FIG. Side edges 47a and 48a are also joined together to form a rectangular frame-shaped seal member 40 in which the long sides 41 and the short sides 42 are alternately connected at right angles.
[0019]
On the other hand, the upper edge of the opening 24 of the ceiling wall 22a of the cooler room 22 is coated with an adhesive in advance, and the sealing member 40 formed in the rectangular frame shape as described above is provided with the opening. It is stuck along the upper edge of 24.
Subsequently, the mounting base 25 to which the refrigeration apparatus 26, the cooler 32, and the like are mounted closes the opening 24 while placing the peripheral edge of the lower surface on the seal member 40, and fastens the mounting base 25 to the ceiling wall 22a with screws or the like. As a result, the seal member 40 is elastically compressed, whereby the seal between the opening 24 and the mount 25 is taken, and the inside of the cooler chamber 22 is insulated from the outside.
[0020]
As described above, at the time of manufacturing, the sealing member 40 of the present embodiment is simply a closed band-shaped sheet material 45 so as to be spread for the first time at the site where the sticking operation is performed. Space can be saved during storage and the like. Further, since the long side 41 and the short side 42 are connected in advance and there is no need to bond the long side 41 and the short side 42, the number of working steps can be reduced and the cost can be reduced. Reduction can be realized.
[0021]
<Second embodiment>
9 and 10 show a second embodiment of the present invention. In the seal member 40a according to the second embodiment, in a state where the sheet material 45a as the primary formed article is formed, the convex portion 50 and the concave portion 51 that fit each other are fitted to the pair of side edges 47a of the outer cutout portion 47. Is formed. The convex portion 50 has a shape in which a part of the outer peripheral portion of a circle is cut in an arc shape, and the width of the base end side is reduced. The recess 51 has the same shape, and the width of the entrance is narrowed.
Although not shown, similar convex portions 50 and concave portions 51 are also formed on both side edges 48 a of the inner cutout portion 48.
[0022]
In the second embodiment, the sheet material 45a is expanded from the cut line 46, and as shown in FIG. 10, the adjacent long side portion 41 and short side portion 42 are expanded until they form a right angle. , 48, when the side edges 47a, 48a are joined together to form a rectangular frame, the convex portions 50 and the concave portions 51 of both side edges 47a, 48a of the cutout portions 47, 48 fit tightly, and the convex portions are formed. The base end of the portion 50 is caught by the entrance of the concave portion 51 and is prevented from falling off.
Since the side edges 47a and 48a of the cutouts 47 and 48 are joined to each other in a retaining state, the sealing member 40a is held in a shape of a widened rectangular frame. The work of sticking to the edge of the opening 24 in the ceiling wall 22a of the cooler room 22 can be performed easily and smoothly.
[0023]
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and furthermore, besides the following, within the scope not departing from the gist. Can be implemented with various modifications.
(1) By changing the shape (notch angle) of the notch, the number of the cuts, and the like, it is also possible to form a triangular or pentagonal or more polygonal frame.
(2) The shapes of the convex portion and the concave portion that fit in the retaining state shown in the second embodiment may have a shape like a dovetail.
(3) As a material of the seal member, a synthetic resin material having a closed cell structure may be used, or another rubber material or a synthetic resin material may be used as long as the material has sealability and elasticity.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing the entire structure of a refrigerator according to a first embodiment of the present invention. FIG. 2 is a plan view showing a machine room. FIG. 3 is an exploded sectional view of a mounting portion of a mounting base. FIG. 5 is a plan view of the machine room before the table is installed. FIG. 5 is a partially cutaway plan view of the sheet material. FIG. 6 is a partially cutaway plan view of the sheet material being expanded. FIG. 7 is a state in which the sheet material is further expanded. FIG. 8 is a partially cut-away plan view of the sheet material according to the second embodiment. FIG. 10 is a partially cut-away plan view of the sheet material according to the second embodiment. FIG. FIG. 11 is an exploded cross-sectional view of an installation portion of a mounting base according to a conventional example. FIG. 12 is a plan view of the seal member.
DESCRIPTION OF SYMBOLS 10 ... Refrigerator main body 22 ... Cooler room 22a ... Ceiling wall (of the cooler room 22) 24 ... Opening part 25 ... Mounting stand 26 ... Refrigerator 32 ... Cooler 40 ... Seal member 41 ... Long side part 42 ... Short side part 45 ... Sheet material (primary formed product) 46 ... Scission line 47 ... Outside notch 47a ... Side edge (of the outside notch 47) 48 ... Inner notch 48a ... Side edge (of the inner notch 48) 49 ... Hinge 40a: sealing member 45a: sheet material (primary formed product) 50: convex portion 51: concave portion

Claims (4)

断熱箱体の周壁に形成された開口部には冷却装置等を設けた取付台が塞いで取り付けられるものにおいて、前記開口部の口縁に張設されて前記取付台との間をシールすることに用いられるシール部材であって、
一次形成品としての弾性材料からなるシート材には、両側に縁辺部となる部分を形成すべく両端が閉じた切込線が入れられるとともに、この切込線の両端の外側に対応する外縁と、前記切込線の途中位置とにＶ字形をなす切欠部が形成されており、このシート材を、前記各切欠部の底の部分を弾性的に曲げ変形つつ前記切込線から広げ、かつ前記各切欠部の側縁同士を合わせることにより、前記開口部の口縁に沿った枠状に形成されていることを特徴とする断熱箱体の開口部シール部材。An attachment formed with a cooling device or the like is closed and attached to an opening formed in the peripheral wall of the heat insulating box, and is attached to an opening edge of the opening to seal between the opening and the attachment. A sealing member used for
In the sheet material made of the elastic material as the primary formed article, a cut line with both ends closed is formed to form a part to be an edge on both sides, and an outer edge corresponding to the outside of both ends of the cut line is formed. A V-shaped notch is formed at an intermediate position of the cut line, and the sheet material is expanded from the cut line while elastically bending and deforming a bottom portion of each cut portion, and An opening seal member for a heat-insulating box, wherein a side edge of each of the notches is aligned with each other to form a frame along the edge of the opening. 前記切欠部の互いに合わせられる側縁には、抜け止め状態に嵌合可能な凹凸部が形成されていることを特徴とする請求項１記載の断熱箱体の開口部シール部材。The sealing member for an opening of a heat-insulating box according to claim 1, wherein a concave / convex portion that can be fitted in a retaining state is formed at side edges of the cutout portion that are aligned with each other. 前記シート材が、独立気泡構造の発泡合成ゴム材または発泡合成樹脂材により形成されていることを特徴とする請求項１または請求項２記載の断熱箱体の開口部シール部材。3. The sealing member for an opening of a heat insulating box according to claim 1, wherein the sheet material is formed of a foamed synthetic rubber material or a foamed synthetic resin material having a closed cell structure. 断熱箱体の周壁に形成された開口部には冷却装置等を設けた取付台が塞いで取り付けられるものにおいて、
一次形成品としての弾性材料からなるシート材を備え、このシート材には、両側に縁辺部となる部分を形成すべく両端が閉じた切込線が入れられるとともに、この切込線の両端の外側に対応する外縁と、前記切込線の途中位置とにＶ字形をなす切欠部が形成されており、
このシート材を、前記各切欠部の底の部分を弾性的に曲げ変形つつ前記切込線から広げ、かつ前記各切欠部の側縁同士を合わせることにより、前記開口部の口縁に沿った枠状をなすシール部材を形成し、
このシール部材を前記開口部の口縁に張設したのち、前記取付台をシール部材上に載せて取り付けることを特徴とする断熱箱体の製造方法。At the opening formed on the peripheral wall of the heat insulating box, a mounting base provided with a cooling device or the like is closed and mounted,
A sheet material made of an elastic material as a primary formed article is provided, and a cut line having both ends closed is formed on the sheet material to form a portion serving as an edge on both sides, and both ends of the cut line are formed. A V-shaped notch is formed at the outer edge corresponding to the outer side and at an intermediate position of the score line,
The sheet material was expanded from the cut line while elastically bending and deforming the bottom portion of each cutout, and the side edges of the cutouts were aligned with each other so as to be along the edge of the opening. Form a frame-shaped seal member,
A method for manufacturing a heat-insulating box, comprising: attaching the seal member to an edge of the opening; and mounting the mount on the seal member.

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