JP2016118313A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator which enables easy attachment and detachment of a duct member and improvement of the airtightness in an air channel.SOLUTION: The refrigerator includes: a duct member 30 provided on a front surface of an inner box 2b and forming a supply air channel 15 with the inner box 2b; a duct cover 20 provided on a front surface of the duct member 30 and covering the duct member 30; and engagement receiving members 40 which are fixed to the inner box 2b and engaged with the duct cover 20. Attachment holes 46 for attaching the engagement receiving members 40 to left and right outer sides of the duct member 30 are formed in the inner box 2b. The engagement receiving members 40 engage with engagement parts 25 formed in the duct cover 20. The structure allows the duct cover 20 and the duct member 30 to be easily attached or detached. Further, the structure inhibits a gap from occurring between the duct member 30 and the inner box 2b to improve the airtightness of the supply air channel 15.SELECTED DRAWING: Figure 7

Description

Translated fromJapanese

本発明は、貯蔵室内に食品等を冷却保存する冷蔵庫に関し、特に、冷却器で冷却された空気を貯蔵室に供給するための供給風路を有する冷蔵庫に関する。  The present invention relates to a refrigerator that stores food or the like in a storage room in a cold state, and particularly relates to a refrigerator that has a supply air passage for supplying air cooled by a cooler to a storage room.

従来、冷却器で冷却された空気を貯蔵室に供給するための供給風路を、冷蔵庫の断熱箱体を構成する内箱と、内箱の内部（貯蔵室側）に設けられるダクト部材との間に形成した冷蔵庫が知られている（例えば、特許文献１、特許文献２）。  Conventionally, a supply air passage for supplying air cooled by a cooler to a storage room is composed of an inner box constituting a heat insulating box body of a refrigerator, and a duct member provided in the inner box (on the storage room side). A refrigerator formed between them is known (for example,Patent Document 1 and Patent Document 2).

特許文献１に開示された冷蔵庫は、冷蔵室の内部に、冷蔵室背面パネルと発泡断熱材とから構成される冷蔵室用ダクトを備えている。発泡断熱材には、冷気通路を形成する発泡断熱材凸部が形成されており、冷蔵室用ダクトは、プッシュリベットとグロメットリベットを用いて内箱に取り付けられる。これにより、発泡断熱材凸部が内箱の内面に押し付けられ、発泡断熱材と内箱との間に冷気通路が形成される。  The refrigerator disclosed inPatent Document 1 includes a refrigerating room duct including a refrigerating room back panel and a foam heat insulating material inside the refrigerating room. The foam heat insulating material is formed with a foam heat insulating material convex portion that forms a cold air passage, and the refrigerator compartment duct is attached to the inner box using a push rivet and a grommet trivet. Thereby, a foam heat insulating material convex part is pressed on the inner surface of an inner box, and a cold air | gas channel | path is formed between a foam heat insulating material and an inner box.

また、特許文献２に開示された冷蔵庫は、内方に開口する一対の溝部を備える内箱と、内箱の内方に取り付けられて冷気を案内する風路を形成する風路形成体と、を備える。風路形成体の左右両側には内箱に向けて突出する嵌入部が形成され、該嵌入部は内箱の溝部に嵌め込まれる。これにより、内箱と風路形成体との間に風路が形成される。  Moreover, the refrigerator disclosed inPatent Document 2 includes an inner box having a pair of grooves that open inward, an air path forming body that is attached to the inner side of the inner box and forms an air path that guides cold air, and Is provided. Insertion portions projecting toward the inner box are formed on both the left and right sides of the air passage forming body, and the insertion portions are fitted into the groove portions of the inner box. Thereby, an air path is formed between the inner box and the air path forming body.

特開２００８−２７３２号公報（第６−７頁、第４図）JP 2008-2732 A (page 6-7, FIG. 4)特開２０１０−７８７０号公報（第６頁、第４図）JP 2010-7870 A (6th page, FIG. 4)

しかしながら、従来技術の冷蔵庫では、冷気の供給風路を形成するダクト部材の取り付け及び取り外しを容易にし、且つ供給風路のシール性を高める観点において更に改善すべき点があった。  However, in the refrigerator of the prior art, there was a point that should be further improved in terms of facilitating attachment and detachment of the duct member forming the cold air supply air passage and enhancing the sealing performance of the air supply passage.

具体的には、特許文献１に開示された冷蔵庫のように、冷蔵室用ダクトをリベット等によって内箱に固定する場合、リベット等の近傍、即ちリベット等によって冷蔵室用ダクトが内箱に押圧されている部分は、シール性を確保できる。しかし、リベット等から離れた部分は、内箱への押圧力が弱くなるので、リベット等の近傍に比べてシール性能が低くなるという問題点があった。  Specifically, when the refrigerator compartment duct is fixed to the inner box with a rivet or the like as in the refrigerator disclosed inPatent Document 1, the refrigerator compartment duct is pressed against the inner box in the vicinity of the rivet or the like, that is, with the rivet or the like. The sealed portion can ensure sealing performance. However, the portion away from the rivet or the like has a problem that the sealing performance is lower than the vicinity of the rivet or the like because the pressing force to the inner box becomes weak.

特に、長尺のダクト部材では、意匠的な制約から上下方向の中間部にリベット等を取り付けられない場合もある。そのような場合、ダクト部材の上部及び下部をリベット等で止めても、中間部においてダクト部材と内箱との間に間隙が発生し易い。そのため、その間隙を介して供給風路の冷気が漏れてしまう。また、リベット等による固定箇所を増やすと、部品数が増加し、供給風路の組み立てが煩雑になる。  In particular, in the case of a long duct member, a rivet or the like may not be attached to an intermediate portion in the vertical direction due to design restrictions. In such a case, even if the upper and lower portions of the duct member are stopped with rivets or the like, a gap is likely to be generated between the duct member and the inner box at the intermediate portion. Therefore, the cold air in the supply air passage leaks through the gap. Further, when the number of fixing points by rivets or the like is increased, the number of parts increases and the assembly of the supply air passage becomes complicated.

また、特許文献２に開示された冷蔵庫のように、風路形成体に形成される嵌入部を、内箱に形成される溝部に挿入して、風路形成体を内箱に固定する場合、内箱の成形が難しいという問題点があった。  Moreover, like the refrigerator disclosed inPatent Document 2, when inserting the fitting portion formed in the air passage formation body into the groove portion formed in the inner box and fixing the air passage formation body to the inner box, There was a problem that it was difficult to mold the inner box.

即ち、風路形成体を内箱に固定するためには、風路形成体の嵌入部に突起部を形成すると共に、内箱に形成される溝部には、前記突起部に係合するための突起を形成する必要があった。つまり、内箱の溝部は、アンダーカット形状に形成される必要があり、その加工が困難であった。  That is, in order to fix the air passage formation body to the inner box, a protrusion is formed in the fitting portion of the air passage formation body, and a groove formed in the inner box is used to engage the protrusion. It was necessary to form protrusions. That is, the groove portion of the inner box needs to be formed in an undercut shape, and the processing is difficult.

また、断熱箱体の成形においては、発泡される断熱材によって内箱が押されて変形し易いので、内箱の寸法精度を高く維持することが難しい。内箱の寸法精度が低いと、風路形成体と内箱との組み立てが困難になり、両者の間に間隙が発生して供給風路のシール性が悪くなる。  Further, in forming the heat insulating box, the inner box is easily pushed and deformed by the foamed heat insulating material, so it is difficult to maintain high dimensional accuracy of the inner box. If the dimensional accuracy of the inner box is low, it becomes difficult to assemble the air path forming body and the inner box, and a gap is generated between the two, resulting in poor sealing of the supply air path.

また、特許文献２に開示された冷蔵庫のように、風路形成体を構成する発泡ポリスチレンからなるダクトに嵌入部を形成する場合には、嵌入部の強度が弱く破損し易い。そのため、風路形成体を取り外す際に嵌入部が破損する恐れがあり、風路形成体の取り外しが困難であった。  Moreover, like the refrigerator disclosed bypatent document 2, when forming an insertion part in the duct which consists of a polystyrene foam which comprises an air path formation body, the intensity | strength of an insertion part is weak and it is easy to damage. Therefore, there is a possibility that the fitting portion may be damaged when removing the air passage formation body, and it is difficult to remove the air passage formation body.

本発明は、上記の事情に鑑みてなされたものであり、ダクト部材の取り付け及び取り外しを容易に行うことができ、且つ風路の気密性を高めることができる冷蔵庫を提供することを目的とする。  This invention is made | formed in view of said situation, and it aims at providing the refrigerator which can perform attachment and removal of a duct member easily, and can improve the airtightness of an air path. .

本発明の冷蔵庫は、外箱と内箱との間に断熱材が充填されて前方が開口する断熱箱体と、前記内箱の前面に設けられて前記内箱との間に風路を形成するダクト部材と、前記ダクト部材の前面に設けられて前記ダクト部材を覆うダクトカバーと、前記内箱に固定されて前記ダクトカバーが係合される係合受部材と、を備え、前記内箱には、前記ダクト部材の左右外側に前記係合受部材を取り付ける取付孔が形成され、前記係合受部材は、前記内箱の背面に当接する基部と、前記基部から前方に突設されて前記取付孔に挿通される係合受部と、前記係合受部から左右方向の外側に向かって突設される突起部と、を有し、前記ダクトカバーには、その左右に係合部が形成され、前記係合部は、左右方向の内側に向かって突設される爪部を有し、前記係合受部材に対して左右方向の外側から係合することを特徴とする。  The refrigerator of the present invention is provided with a heat insulating material between the outer box and the inner box so that the front is opened, and the air box is formed between the inner box and the front surface of the inner box. A duct member provided on a front surface of the duct member and covering the duct member; and an engagement receiving member fixed to the inner box and engaged with the duct cover. Mounting holes for attaching the engagement receiving member are formed on the left and right outer sides of the duct member, and the engagement receiving member protrudes forward from the base and a base that contacts the back surface of the inner box. An engagement receiving portion that is inserted through the mounting hole; and a projection that protrudes outward from the engagement receiving portion in the left-right direction, and the duct cover includes engagement portions on the left and right sides thereof. And the engaging portion has a claw portion projecting inward in the left-right direction, Characterized by engaging from the outside in the lateral direction with respect to engagement receiving member.

また、本発明の冷蔵庫は、前記内箱には、前記ダクト部材の左右外側に沿って上下方向に延在する凸部が形成されることを特徴とする。  Moreover, the refrigerator of the present invention is characterized in that the inner box is formed with a convex portion extending in the vertical direction along the left and right outer sides of the duct member.

また、本発明の冷蔵庫は、前記凸部が前記係合受部材の外側に形成されることを特徴とする。  The refrigerator according to the present invention is characterized in that the convex portion is formed outside the engagement receiving member.

また、本発明の冷蔵庫は、前記ダクトカバーには、後方に向かって突設されて前記ダクト部材の左右外側に沿って上下方向に延在するガイド部が形成され、前記係合部は、前記ガイド部に形成されることを特徴とする。  In the refrigerator of the present invention, the duct cover is provided with a guide portion that protrudes rearward and extends in the vertical direction along the left and right outer sides of the duct member. It is formed in a guide part.

また、本発明の冷蔵庫は、前記ダクトカバーと前記内箱とを固定する取付部材と、を有し、前記ダクトカバーは、その上部及び下部において前記取付部材によって前記内箱に固定され、前記係合部は、前記上部の取付部材よりも下方且つ前記下部の取付部材よりも上方に形成されることを特徴とする。  The refrigerator of the present invention includes an attachment member that fixes the duct cover and the inner box, and the duct cover is fixed to the inner box by the attachment member at an upper portion and a lower portion thereof, and the engagement member The joint portion is formed below the upper mounting member and above the lower mounting member.

また、本発明の冷蔵庫は、前記ダクトカバーの左右外側には、前記ダクトカバーの端部近傍が左右外側へ弾性変形することを許容する空間部が形成されることを特徴とする。  The refrigerator of the present invention is characterized in that a space that allows elastic deformation of the vicinity of the end of the duct cover to the left and right outer sides is formed on the left and right outer sides of the duct cover.

また、本発明の冷蔵庫は、前記ダクトカバーの左右の端部近傍を外側へ弾性変形させることよって、前記係合部と前記係合受部との係合が解除されることを特徴とする。  The refrigerator of the present invention is characterized in that the engagement between the engagement portion and the engagement receiving portion is released by elastically deforming the vicinity of the left and right end portions of the duct cover outward.

本発明の冷蔵庫によれば、内箱に係合受部材を取り付ける取付孔が形成される。係合受部材は、内箱の背面から取付孔に挿通され、内箱の内側にダクトカバーの係合部と係合するための係合受部を形成する。これにより、内箱にダクトカバーを取り付けるためのアンダーカット形状の溝等を形成する必要がなくなるので、内箱の形が単純になり、内箱の成形が容易になる。また、係合受部材を容易且つ高強度に固定できる。  According to the refrigerator of the present invention, the attachment hole for attaching the engagement receiving member to the inner box is formed. The engagement receiving member is inserted into the mounting hole from the back surface of the inner box, and forms an engagement receiving portion for engaging with the engagement portion of the duct cover inside the inner box. This eliminates the need to form an undercut groove or the like for attaching the duct cover to the inner box, thereby simplifying the shape of the inner box and facilitating the molding of the inner box. Further, the engagement receiving member can be fixed easily and with high strength.

また、係合部と係合受部材とを係合させることにより、ダクト部材と内箱との間に間隙が発生することを抑制して、供給風路のシール性能を高めることができる。また、係合部及び係合受部をダクト部材の左右に設けることによりダクト部材の左右でダクト部材と内箱との押し付け力を高め、高いシール性を発揮できる。  Further, by engaging the engaging portion and the engagement receiving member, it is possible to suppress the generation of a gap between the duct member and the inner box, and to improve the sealing performance of the supply air passage. Further, by providing the engaging portion and the engaging receiving portion on the left and right sides of the duct member, the pressing force between the duct member and the inner box can be increased on the left and right sides of the duct member, and high sealing performance can be exhibited.

また、ダクトカバーの係合部の爪部は、内側に向かって突設されており、係合受部に形成される突起部は、外側に向かって突設される。これにより、ダクトカバーを取り外す際に、ダクトカバーを左右に広げて係合部と係合受部材との係合を解除し、ダクトカバーを容易に取り外すことができる。また、取り外し時に、ダクトカバーの爪部に過大な力が作用しないので爪部の破損を防止できる。  Further, the claw portion of the engaging portion of the duct cover protrudes toward the inside, and the protrusion formed on the engagement receiving portion protrudes toward the outside. Thus, when removing the duct cover, the duct cover can be widened to the left and right to release the engagement between the engaging portion and the engagement receiving member, and the duct cover can be easily removed. Further, when removing, since an excessive force does not act on the claw portion of the duct cover, the claw portion can be prevented from being damaged.

また、本発明の冷蔵庫によれば、内箱の内側に、ダクト部材の左右外側に沿って上下方向に延在する凸部を備えている。これにより、ダクト部材及びダクトカバーを取り付ける際、ダクト部材やダクトカバーの位置決めが容易になる。  Moreover, according to the refrigerator of this invention, the convex part extended in the up-down direction along the left-right outer side of a duct member is provided inside the inner box. Thereby, when attaching a duct member and a duct cover, positioning of a duct member or a duct cover becomes easy.

また、本発明の冷蔵庫によれば、凸部は、係合受部材を取り付ける取付孔の外側に形成されている。これにより、ダクトカバーの係合部は、凸部の内側に挿入されることになり、凸部に案内されてダクトカバーの位置決めが容易になる。また、凸部によって係合部の過大な変位が規制されるので、係合部と係合受部との係合の外れを防止することができる。  Moreover, according to the refrigerator of this invention, the convex part is formed in the outer side of the attachment hole which attaches an engagement receiving member. Thereby, the engaging part of a duct cover will be inserted inside a convex part, and it will be guided by a convex part and positioning of a duct cover will become easy. Moreover, since the excessive displacement of the engaging part is regulated by the convex part, it is possible to prevent the engagement part and the engagement receiving part from being disengaged.

また、本発明の冷蔵庫によれば、ダクトカバーの内側にダクト部材を固定するためのガイド部が形成される。これにより、ダクト部材の位置決めが容易になる。また、ガイド部に係合部を形成することにより、ダクトカバー及びダクト部材の位置決めや取り付けが容易になる。  Moreover, according to the refrigerator of this invention, the guide part for fixing a duct member is formed inside a duct cover. Thereby, positioning of a duct member becomes easy. Further, by forming the engaging portion in the guide portion, positioning and attachment of the duct cover and the duct member are facilitated.

また、本発明の冷蔵庫によれば、ダクトカバーの上部近傍及び下部近傍を取付部材（ねじ等）によって固定し、上下方向の略中間部を係合部と係合受部とによって係合させる。これにより、取付部材（ねじ等）の個数が少なくても高いシール性を発揮できる。また、部品数を減らして取り付け作業を容易にできる。また、取付部材の個数が少ないので、意匠性も向上する。  Further, according to the refrigerator of the present invention, the vicinity of the upper portion and the lower portion of the duct cover are fixed by the attachment members (screws or the like), and the substantially intermediate portion in the vertical direction is engaged by the engaging portion and the engaging receiving portion. Thereby, even if the number of attachment members (screws etc.) is small, high sealing performance can be exhibited. In addition, the number of parts can be reduced to facilitate installation. Moreover, since the number of attachment members is small, the design is improved.

また、本発明の冷蔵庫によれば、ダクトカバーの左右外側には、ダクトカバーの端部近傍が左右外側へ弾性変形することを許容する空間部が形成される。これにより、ダクトカバーの端部を左右に拡げる作業のためのスペースが確保され、ダクトカバーの取り外しが容易になる。  Further, according to the refrigerator of the present invention, a space that allows the vicinity of the end of the duct cover to be elastically deformed to the left and right outside is formed on the left and right outside of the duct cover. Thereby, the space for the operation | work which expands the edge part of a duct cover to right and left is ensured, and the removal of a duct cover becomes easy.

また、本発明の冷蔵庫によれば、ダクトカバーの左右の端部近傍を外側へ弾性変形させることよって、係合部と係合受部との係合が解除される。そのため、ダクトカバーを容易に取り外すことができる。  Further, according to the refrigerator of the present invention, the engagement between the engagement portion and the engagement receiving portion is released by elastically deforming the vicinity of the left and right end portions of the duct cover outward. Therefore, the duct cover can be easily removed.

本発明の実施形態に係る冷蔵庫の正面外観図である。It is a front external view of the refrigerator which concerns on embodiment of this invention.本発明の実施形態に係る冷蔵庫の概略構造を示す右側断面図である。It is right side sectional drawing which shows schematic structure of the refrigerator which concerns on embodiment of this invention.本発明の実施形態に係る冷蔵庫の冷蔵室の断熱扉を外した状態を示す正面図である。It is a front view which shows the state which removed the heat insulation door of the refrigerator compartment of the refrigerator which concerns on embodiment of this invention.本発明の実施形態に係る冷蔵庫の冷蔵室の水平断面図（図３に示すＡ−Ａ線断面図）である。It is a horizontal sectional view (the AA line sectional view shown in Drawing 3) of the refrigerator compartment of the refrigerator concerning the embodiment of the present invention.本発明の実施形態に係る冷蔵庫の冷蔵室供給風路の概略構成を示す分解斜視図である。It is a disassembled perspective view which shows schematic structure of the refrigerator compartment supply air path of the refrigerator which concerns on embodiment of this invention.本発明の実施形態に係る冷蔵庫のダクトカバー及びダクト部材を示す分解斜視図である。It is a disassembled perspective view which shows the duct cover and duct member of the refrigerator which concern on embodiment of this invention.本発明の実施形態に係る冷蔵庫の（Ａ）冷蔵室供給風路部分を拡大した水平断面図（図４に示すＢ部拡大図）、（Ｂ）係合部の近傍を拡大して示す水平断面図（図７（Ａ）に示すＣ部拡大図）である。The horizontal cross-sectional view (B section enlarged view shown in FIG. 4) which expanded the (A) refrigerator compartment supply air path part of the refrigerator which concerns on embodiment of this invention, (B) The horizontal cross section which expands and shows the vicinity of an engaging part It is a figure (C section enlarged view shown to FIG. 7 (A)).本発明の実施形態に係る冷蔵庫の係合部の近傍を示す拡大斜視図である。It is an expansion perspective view which shows the vicinity of the engaging part of the refrigerator which concerns on embodiment of this invention.本発明の実施形態に係る冷蔵庫の内箱及び係合受部材を示す背面分解斜視図である。It is a back surface disassembled perspective view which shows the inner case and engagement receiving member of the refrigerator which concern on embodiment of this invention.

以下、本発明の実施形態に係る冷蔵庫を図面に基づき詳細に説明する。  Hereinafter, the refrigerator which concerns on embodiment of this invention is demonstrated in detail based on drawing.

図１は、本実施形態に係る冷蔵庫１の概略構造を示す正面外観図である。図２は、冷蔵庫１の右側断面図である。なお、図２において、庫内を循環する冷気の流れを実線矢印で示している。  FIG. 1 is a front external view showing a schematic structure of therefrigerator 1 according to the present embodiment. FIG. 2 is a right sectional view of therefrigerator 1. In addition, in FIG. 2, the flow of the cold air which circulates in the store | warehouse | chamber is shown with the solid line arrow.

図１に示すように、冷蔵庫１は、断熱箱体２を備え、該断熱箱体２の内部に食品等を貯蔵する貯蔵室を形成している。貯蔵室の内部は、保存温度や用途に応じて複数の収納室３〜７に区分されている。最上段が冷蔵室３、その下段左側が製氷室４で右側が上段冷凍室５、更にその下段が下段冷凍室６、最下段が野菜室７である。なお、製氷室４、上段冷凍室５及び下段冷凍室６は、何れも冷凍温度域の収納室であり、以下の説明では適宜、これらをまとめて冷凍室４〜６と称する。  As shown in FIG. 1, therefrigerator 1 includes aheat insulating box 2 and forms a storage room for storing food and the like inside theheat insulating box 2. The interior of the storage room is divided into a plurality ofstorage rooms 3 to 7 according to storage temperature and usage. The uppermost stage is therefrigerator compartment 3, the lower left side is the ice making room 4, the right side is theupper freezer room 5, the lower stage is the lowerstage freezer room 6, and the lowermost stage is thevegetable room 7. The ice making chamber 4, the upper freezingchamber 5, and the lower freezingchamber 6 are all storage chambers in the freezing temperature range, and in the following description, these are collectively referred to as freezing chambers 4 to 6 as appropriate.

断熱箱体２の前面は開口しており、前記各収納室３〜７に対応する前記開口には、各々断熱扉８〜１２が開閉自在に設けられている。断熱扉８ａ、８ｂは、冷蔵室３の前面を分割して塞ぐもので、断熱扉８ａの左上下部及び断熱扉８ｂの右上下部が断熱箱体２に回転自在に支持されている。また、断熱扉９〜１２は、冷蔵庫１の前方に引出自在に、断熱箱体２に支持されている。  The front surface of theheat insulation box 2 is opened, andheat insulation doors 8 to 12 are provided in the openings corresponding to thestorage chambers 3 to 7 so as to be opened and closed, respectively. Theheat insulating doors 8a and 8b divide and block the front surface of therefrigerator compartment 3, and the left upper and lower parts of theheat insulating door 8a and the upper right lower part of theheat insulating door 8b are rotatably supported by theheat insulating box 2. Moreover, the heat insulation doors 9-12 are supported by theheat insulation box 2 so that it can be pulled out to the front of therefrigerator 1.

図２に示すように、冷蔵庫１の本体である断熱箱体２は、前面に開口部を有する鋼板製の外箱２ａと、該外箱２ａの内側に間隙を持たせて配設され、前面に開口部を有する合成樹脂製の内箱２ｂと、前記外箱２ａと内箱２ｂとの間隙に充填発泡される発泡ポリウレタン製の断熱材２ｃと、から構成されている。なお、各断熱扉８〜１２も、断熱箱体２と同様の断熱構造を採用している。  As shown in FIG. 2, theheat insulation box 2 which is the main body of therefrigerator 1 is disposed with a steel plateouter box 2a having an opening on the front surface and a gap inside theouter box 2a. And aninner box 2b made of synthetic resin having an opening and aheat insulating material 2c made of polyurethane foam filled and foamed in a gap between theouter box 2a and theinner box 2b. Each of theheat insulating doors 8 to 12 adopts the same heat insulating structure as that of theheat insulating box 2.

冷蔵室３と、その下段に位置する冷凍室４〜６との間は、断熱仕切壁５５によって仕切られている。断熱仕切壁５５は、合成樹脂の成形品であり、その内部には断熱材が充填されている。  Therefrigerator compartment 3 and the freezer compartments 4 to 6 located in the lower stage are partitioned by a heat insulatingpartition wall 55. The heat insulatingpartition wall 55 is a molded product of synthetic resin, and the inside thereof is filled with a heat insulating material.

また、冷凍室４〜６内部の製氷室４と上段冷凍室５との間は、仕切壁（図面に表れない）によって仕切られている。製氷室４及び上段冷凍室５と、その下段に設けられる下段冷凍室６とは、冷気が流通自在に連通している。そして、冷凍室４〜６と野菜室７との間は、断熱仕切壁５６によって区分けされている。  Further, the ice making chamber 4 and the upper freezingchamber 5 inside the freezing chambers 4 to 6 are partitioned by a partition wall (not shown in the drawing). The ice making chamber 4 and the upper freezingchamber 5 communicate with the lower freezingchamber 6 provided in the lower stage thereof so that cold air can flow freely. The freezer compartments 4 to 6 and thevegetable compartment 7 are partitioned by a heat insulatingpartition wall 56.

また、冷凍室４〜６の奥側には、合成樹脂製の仕切部材で区画されて、供給風路１４（冷凍室供給風路）が形成されている。供給風路１４は、冷却器５３で冷却された冷気を流す風路である。また、下段冷凍室６の下部背面には、冷凍室４〜６から冷却室１３へと空気を戻す戻り口が形成されている。  In addition, a supply air passage 14 (freezer compartment supply air passage) is formed on the back side of the freezer compartments 4 to 6 by a partition member made of synthetic resin. Thesupply air passage 14 is an air passage through which the cool air cooled by the cooler 53 flows. In addition, a return port for returning air from the freezing chambers 4 to 6 to the coolingchamber 13 is formed in the lower back surface of the lower freezingchamber 6.

冷蔵室３の背面には、冷却器５３で冷却された冷気を冷蔵室３へと供給する風路として、供給風路１５（冷蔵室供給風路）が形成されている。供給風路１５は、ダクト部材３０と内箱２ｂとの間に形成され、ダクト部材３０の前面には、ダクトカバー２０が配設される。  A supply air passage 15 (refrigeration chamber supply air passage) is formed on the back surface of therefrigerator compartment 3 as an air passage for supplying the cold air cooled by the cooler 53 to therefrigerator compartment 3. Thesupply air passage 15 is formed between theduct member 30 and theinner box 2b, and theduct cover 20 is disposed on the front surface of theduct member 30.

供給風路１４と供給風路１５とは、ダンパ５４（風路開閉器）を介して連通している。ダンパ５４は、冷蔵室３へと供給する冷気の流量を制御して、冷蔵室３内部の温度を適切に維持するためのものである。  Thesupply air passage 14 and thesupply air passage 15 communicate with each other via a damper 54 (air passage switch). Thedamper 54 is for controlling the flow rate of the cool air supplied to the refrigeratingchamber 3 to appropriately maintain the temperature inside the refrigeratingchamber 3.

冷蔵室３と野菜室７とは、図示しない連結風路によって連通されている。これにより、冷蔵室３に供給された冷気は、連結風路を介して野菜室７へと供給される。また、断熱仕切壁５６の内部には、野菜室７と冷却室１３とをつなぎ、野菜室７から冷却室１３へと冷気を戻すための帰還風路１６が形成されている。  Therefrigerator compartment 3 and thevegetable compartment 7 are connected by a connection air passage (not shown). Thereby, the cold air supplied to therefrigerator compartment 3 is supplied to thevegetable compartment 7 via a connection air path. Further, inside the heat insulatingpartition wall 56, areturn air passage 16 is formed for connecting thevegetable compartment 7 and thecooling compartment 13 and returning cold air from thevegetable compartment 7 to thecooling compartment 13.

内箱２ｂ内部の供給風路１４の更に奥側には、仕切体で区分けされて冷却室１３が設けられる。冷却室１３上部の仕切体には、冷却室１３と供給風路１４とをつなぐ開口１３ａが形成されており、開口１３ａには、貯蔵室の各収納室３〜７に冷気を供給するための送風機５２が配設されている。他方、冷却室１３の下方には、貯蔵室からの帰還冷気を冷却室１３の内部へと吸入する開口１３ｂが形成されている。  On the further back side of thesupply air passage 14 inside theinner box 2b, a coolingchamber 13 is provided by being divided by a partition. An opening 13a that connects the coolingchamber 13 and thesupply air passage 14 is formed in the upper partition of the coolingchamber 13, and the opening 13a is used to supply cold air to thestorage chambers 3 to 7 of the storage chamber. A blower 52 is provided. On the other hand, below the coolingchamber 13, anopening 13 b is formed for sucking the return cold air from the storage chamber into the coolingchamber 13.

そして、冷却室１３の内部には、循環する空気を冷却するための冷却器５３（蒸発器）が配置されている。冷却器５３は、圧縮器５１、放熱器（図示せず）、膨張弁（キャピラリーチューブ）（図示せず）に冷媒配管を介して接続されており、蒸気圧縮式の冷凍サイクル回路を構成するものである。なお、本実施形態に係る冷蔵庫１では、前記冷凍サイクルの冷媒として、イソブタン（Ｒ６００ａ）を用いている。  A cooler 53 (evaporator) for cooling the circulating air is disposed inside the coolingchamber 13. The cooler 53 is connected to the compressor 51, a radiator (not shown), and an expansion valve (capillary tube) (not shown) via a refrigerant pipe, and constitutes a vapor compression refrigeration cycle circuit. It is. In therefrigerator 1 according to this embodiment, isobutane (R600a) is used as the refrigerant of the refrigeration cycle.

図３は、冷蔵庫１の冷蔵室３の断熱扉８を外した状態を示す正面図である。図３に示すように、冷蔵室３の略中央の奥に供給風路１５の前面を覆うようにダクトカバー２０が備えられる。ダクトカバー２０には、冷蔵室３に冷気を吹き出す複数の吹出口２１が形成される。冷却器５３（図２参照）で冷却された冷気は、供給風路１５を通り吹出口２１より吹き出される。  FIG. 3 is a front view showing a state in which theheat insulating door 8 of therefrigerator compartment 3 of therefrigerator 1 is removed. As shown in FIG. 3, aduct cover 20 is provided in the substantially central back of therefrigerator compartment 3 so as to cover the front surface of thesupply air passage 15. Theduct cover 20 is formed with a plurality ofair outlets 21 through which cold air is blown into therefrigerator compartment 3. The cool air cooled by the cooler 53 (see FIG. 2) passes through thesupply air passage 15 and is blown out from theoutlet 21.

ダクトカバー２０は、上下方向に延在する部材であり、その上部近傍及び下部近傍が、取付部材としての、ねじ３９によって内箱２ｂに固定される。なお、ねじ３９の前面には、ねじ３９を前面から見えないように覆うカバー部材等が取り付けられても良い。また、ねじ３９によって内箱２ｂに固定される固定部材等を別途設け、該固定部材にダクトカバー２０を係合させて固定するよう構成することもできる。  Theduct cover 20 is a member extending in the vertical direction, and the vicinity of the upper part and the vicinity of the lower part thereof are fixed to theinner box 2b byscrews 39 as mounting members. A cover member or the like that covers thescrew 39 so as not to be seen from the front surface may be attached to the front surface of thescrew 39. Further, a fixing member or the like that is fixed to theinner box 2b by ascrew 39 may be separately provided, and theduct cover 20 may be engaged with and fixed to the fixing member.

図４は、冷蔵庫１の冷蔵室３の水平断面図であり、図３におけるＡ−Ａ線断面を表している。図４に示すように、ダクトカバー２０の背面側には、ダクト部材３０が取り付けられる。即ち、ダクト部材３０は、ダクトカバー２０と内箱２ｂとに挟まれるように配設される。これにより、冷蔵室３の奥に、ダクト部材３０と内箱２ｂとに挟まれて供給風路１５が形成される。  FIG. 4 is a horizontal sectional view of therefrigerator compartment 3 of therefrigerator 1, and represents a cross section taken along line AA in FIG. 3. As shown in FIG. 4, aduct member 30 is attached to the back side of theduct cover 20. That is, theduct member 30 is disposed so as to be sandwiched between theduct cover 20 and theinner box 2b. Thereby, thesupply air path 15 is formed in the back of therefrigerator compartment 3 between theduct member 30 and theinner box 2b.

図５は、冷蔵庫１の供給風路１５の概略構成を示す分解斜視図である。なお、図５において、紙面左下が冷蔵庫１の前面側である。図５に示すように、ダクト部材３０は、内箱２ｂの内側（前面側）に取り付けられ、ダクトカバー２０は、ダクト部材３０を覆うようにその前面に取り付けられる。  FIG. 5 is an exploded perspective view showing a schematic configuration of thesupply air passage 15 of therefrigerator 1. In FIG. 5, the lower left side of the drawing is the front side of therefrigerator 1. As shown in FIG. 5, theduct member 30 is attached to the inner side (front side) of theinner box 2 b, and theduct cover 20 is attached to the front surface so as to cover theduct member 30.

内箱２ｂの背面からは、係合受部材４０が挿通されて内箱２ｂに固定される。そして、ダクトカバー２０は、係合受部材４０の係合受部４２に係合する。これにより、ダクトカバー２０及びダクト部材３０が内箱２ｂに固定される  From the back surface of theinner box 2b, theengagement receiving member 40 is inserted and fixed to theinner box 2b. Theduct cover 20 is engaged with theengagement receiving portion 42 of theengagement receiving member 40. Thereby, theduct cover 20 and theduct member 30 are fixed to theinner box 2b.

ここで、ダクトカバー２０は、例えば、ＰＰ（ポリプロピレン）等の合成樹脂から成形される部材である。他方、ダクト部材３０は、例えば、ＰＳ（発泡ポリスチレン）等から成形される部材である。なお、ダクトカバー２０やダクト部材３０には、各種センサや配線等を装着するための図示しない形状、例えば、凹凸形状や溝等を形成しても良い。  Here, theduct cover 20 is a member molded from a synthetic resin such as PP (polypropylene). On the other hand, theduct member 30 is a member formed from, for example, PS (expanded polystyrene) or the like. Theduct cover 20 and theduct member 30 may be formed with a shape (not shown) for mounting various sensors, wirings, etc., such as an uneven shape or a groove.

ダクト部材３０の左右側面部の上下方向の略中央には、ダクト部材３０の中心方向に凹む凹部３４が形成されている。凹部３４は、内箱２ｂの背面から取り付けられて内箱の内側に突出する係合受部材４０の係合受部４２に干渉しないように形成される逃げ構造である。係合受部４２と凹部３４との位置が対応することにより、内箱２ｂに対するダクト部材３０の位置決めが容易になる。  Aconcave portion 34 that is recessed in the center direction of theduct member 30 is formed at the approximate center in the vertical direction of the left and right side surface portions of theduct member 30. Therecess 34 is a relief structure formed so as not to interfere with theengagement receiving portion 42 of theengagement receiving member 40 that is attached from the back surface of theinner box 2b and protrudes to the inside of the inner box. Since the positions of theengagement receiving portion 42 and the recessedportion 34 correspond to each other, the positioning of theduct member 30 with respect to theinner box 2b is facilitated.

図６は、冷蔵庫１のダクトカバー２０及びダクト部材３０を示す分解斜視図である。なお、図６において、紙面左上が冷蔵庫１の前面である。図６に示すように、ダクト部材３０は、水平断面略コ字状で上下方向に延在する部材である。具体的には、ダクト部材３０の背面には、水平断面略コ字状で上下方向に延在する凹部３２が形成されており、この凹部３２が冷気を流す供給風路１５となる。  FIG. 6 is an exploded perspective view showing theduct cover 20 and theduct member 30 of therefrigerator 1. In FIG. 6, the upper left side of the drawing is the front surface of therefrigerator 1. As shown in FIG. 6, theduct member 30 is a member that has a substantially U-shaped horizontal cross section and extends in the vertical direction. Specifically, arecess 32 is formed on the back surface of theduct member 30 with a substantially U-shaped horizontal section and extending in the vertical direction. Therecess 32 serves as asupply air passage 15 through which cool air flows.

前述のとおり、ダクトカバー２０の前面部２２には、冷蔵室３（図２参照）に冷気を送るための吹出口２１が形成されている。また、ダクト部材３０の前面には、供給風路１５からの冷気を吹き出すための吹出孔３１が形成されている。  As described above, theair outlet 21 for sending cold air to the refrigerator compartment 3 (see FIG. 2) is formed in thefront surface portion 22 of theduct cover 20. In addition, ablowout hole 31 for blowing out cool air from thesupply air passage 15 is formed in the front surface of theduct member 30.

ここで、ダクトカバー２０の吹出口２１及びダクト部材３０の吹出孔３１の位置は、夫々対応している。吹出口２１及び吹出孔３１を通して供給風路１５からの冷気を冷蔵室３へと送ることができる。  Here, the positions of theair outlet 21 of theduct cover 20 and theair outlet 31 of theduct member 30 correspond to each other. Cold air from thesupply air passage 15 can be sent to the refrigeratingchamber 3 through theair outlet 21 and theair outlet 31.

ダクトカバー２０の上部近傍及び下部近傍には、ダクトカバー２０を内箱２ｂ（図５参照）に固定するための取付孔２８が形成されている。即ち、ダクトカバー２０は、上部近傍の取付孔２８及び下部近傍の取付孔２８に挿通されるねじ３９（図３参照）によって、内箱２ｂに固定される。  Anattachment hole 28 for fixing theduct cover 20 to theinner box 2b (see FIG. 5) is formed near the upper part and the lower part of theduct cover 20. That is, theduct cover 20 is fixed to theinner box 2b by screws 39 (see FIG. 3) inserted through the mountingholes 28 near the upper part and the mountingholes 28 near the lower part.

なお、ダクト部材３０の下部近傍右側には、ダクトカバー２０と内箱２ｂとを固定するための取付孔３３が形成されている。取付孔３３の位置は、ダクトカバー２０の下部近傍右側の取付孔２８に対応しており、取付孔２８、３３に、ねじ３９が挿通されることにより、ダクトカバー２０及びダクト部材３０の下部近傍右側が内箱２ｂに固定される。  Anattachment hole 33 for fixing theduct cover 20 and theinner box 2b is formed on the right side near the lower portion of theduct member 30. The position of the mountinghole 33 corresponds to theright mounting hole 28 in the vicinity of the lower part of theduct cover 20, and the vicinity of the lower parts of theduct cover 20 and theduct member 30 by insertingscrews 39 into the mountingholes 28 and 33. The right side is fixed to theinner box 2b.

また、ダクトカバー２０の背面側の左右には、係合部２５が形成されている。詳しくは、係合部２５は、上部近傍の取付孔２８よりも下方且つ下部近傍の取付孔２８よりも上方に形成される。そして、ダクトカバー２０は、係合部２５が係合受部材４０（図５参照）の係合受部４２（図５参照）に係合することによっても、内箱２ｂに固定される。  Engagingportions 25 are formed on the left and right sides of the back side of theduct cover 20. Specifically, the engagingportion 25 is formed below theattachment hole 28 near the upper portion and above theattachment hole 28 near the lower portion. Theduct cover 20 is also fixed to theinner box 2b when the engagingportion 25 engages with the engaging receiving portion 42 (see FIG. 5) of the engaging receiving member 40 (see FIG. 5).

即ち、ダクトカバー２０は、上部近傍及び下部近傍の取付孔２８及び中間部の係合部２５によって内箱２ｂに固定されることになる。これにより、ダクト部材３０と内箱２ｂとの押し付け力を高め、供給風路１５のシール性を確保することができる。また、ねじ３９の個数が少なくても高いシール性を発揮できるので、部品数を減らして取り付け作業を容易にすることができる。  That is, theduct cover 20 is fixed to theinner box 2b by the mountingholes 28 in the vicinity of the upper part and the lower part and theengaging part 25 in the intermediate part. Thereby, the pressing force of theduct member 30 and theinner box 2b can be increased, and the sealing performance of thesupply air passage 15 can be ensured. Moreover, since a high sealing performance can be exhibited even if the number ofscrews 39 is small, the number of parts can be reduced and the mounting operation can be facilitated.

ダクト部材３０の左右側面部に形成される凹部３４は、ダクトカバー２０の係合部２５に対応する位置に形成される（図８参照）。即ち、凹部３４と係合部２５は、略同じ高さに形成されている。これにより、係合部２５とダクト部材３０との干渉が避けられると共に、ダクトカバー２０に対するダクト部材３０の位置決めが容易になる。  Therecesses 34 formed on the left and right side surfaces of theduct member 30 are formed at positions corresponding to the engagingportions 25 of the duct cover 20 (see FIG. 8). That is, the recessedpart 34 and theengaging part 25 are formed in substantially the same height. Thereby, interference with the engagingpart 25 and theduct member 30 is avoided, and positioning of theduct member 30 with respect to theduct cover 20 is facilitated.

また、ダクトカバー２０の内側には、ガイド部２４が形成されている。ガイド部２４は、ダクトカバー２０の前面部２２の左右端部近傍から背面側に向かって突設され、上下方向に延在している。ガイド部２４は、ダクト部材３０を左右から挟み込むように形成されており、これにより、ダクト部材３０の位置決めが容易になる。  Aguide portion 24 is formed inside theduct cover 20. Theguide portion 24 protrudes from the vicinity of the left and right end portions of thefront surface portion 22 of theduct cover 20 toward the back surface side, and extends in the vertical direction. Theguide part 24 is formed so as to sandwich theduct member 30 from the left and right, and thereby the positioning of theduct member 30 is facilitated.

ガイド部２４の上部近傍及び下部近傍には、内側に向かって突出す固定爪２４ａが形成されている。他方、ダクト部材３０には、背面左右端部の上部近傍及び下部近傍に爪受部３５が形成されている。  In the vicinity of the upper portion and the lower portion of theguide portion 24, a fixingclaw 24a that protrudes inward is formed. On the other hand, theduct member 30 is formed withclaw receiving portions 35 in the vicinity of the upper and lower portions of the left and right end portions of the back surface.

ダクトカバー２０に組み付けられたダクト部材３０は、固定爪２４ａによって支持される。即ち、固定爪２４ａ及び爪受部３５の位置は、夫々対応しており、固定爪２４ａを爪受部３５に係合させることにより、ダクトカバー２０とダクト部材３０とが固定される。これにより、ダクト部材３０の脱落を防止して、ダクト部材３０が取り付けられたダクトカバー２０を内箱２ｂに取り付ける作業を容易に行うことができる。  Theduct member 30 assembled to theduct cover 20 is supported by the fixingclaws 24a. That is, the positions of the fixedclaw 24 a and theclaw receiving portion 35 correspond to each other, and theduct cover 20 and theduct member 30 are fixed by engaging the fixedclaw 24 a with theclaw receiving portion 35. Accordingly, theduct member 30 can be prevented from falling off, and theduct cover 20 to which theduct member 30 is attached can be easily attached to theinner box 2b.

図７（Ａ）は、冷蔵庫１の供給風路１５部分を拡大した水平断面図であり、図４におけるＢ部の拡大図である。図７（Ｂ）は、係合部２５の近傍を拡大して示す水平断面図であり、図７（Ａ）に示すＣ部の拡大図である。  FIG. 7A is an enlarged horizontal sectional view of thesupply air passage 15 portion of therefrigerator 1, and is an enlarged view of a portion B in FIG. FIG. 7B is an enlarged horizontal sectional view showing the vicinity of the engagingportion 25, and is an enlarged view of a portion C shown in FIG. 7A.

図７（Ａ）に示すように、内箱２ｂとダクト部材３０との当接部には、シール部材３８が介装される。つまり、水平断面略コ字状を成すダクト部材３０の背面側の端面であるシール面３６は、シール部材３８を介して内箱２ｂに当接する。シール部材３８は、例えば、発砲樹脂製のシート材等である。これにより、ダクト部材３０と内箱２ｂとの当接部のシール性を高め、供給風路１５から冷気が漏れ出ることを抑制している。  As shown in FIG. 7A, aseal member 38 is interposed at the contact portion between theinner box 2 b and theduct member 30. That is, theseal surface 36 which is the end surface on the back surface side of theduct member 30 having a substantially U-shaped horizontal section is in contact with theinner box 2b via theseal member 38. Theseal member 38 is, for example, a foamed resin sheet material. Thereby, the sealing performance of the contact portion between theduct member 30 and theinner box 2b is enhanced, and the leakage of cold air from thesupply air passage 15 is suppressed.

内箱２ｂには、冷蔵庫１の前面側に向かって突出して、ダクト部材３０の左右外側に沿って上下方向に延在する凸部４５が形成されている。凸部４５は、係合受部材４０の左右外側に形成され、ダクト部材３０を左右から挟み込むように設けられる。  Theinner box 2 b is formed with aconvex portion 45 that protrudes toward the front side of therefrigerator 1 and extends in the vertical direction along the left and right outer sides of theduct member 30. Theconvex portion 45 is formed on the left and right outer sides of theengagement receiving member 40 and is provided so as to sandwich theduct member 30 from the left and right.

内箱２ｂに凸部４５を形成することにより、ダクトカバー２０及びダクト部材３０を内箱２ｂに取り付ける際、凸部４５によってダクトカバー２０及びダクト部材３０が案内されるので、その位置決めが容易になる。  By forming theconvex portion 45 on theinner box 2b, theduct cover 20 and theduct member 30 are guided by theconvex portion 45 when theduct cover 20 and theduct member 30 are attached to theinner box 2b. Become.

また、凸部４５によりダクトカバー２０及びダクト部材３０が案内されて装着が容易になることにより、係合部２５に過大な力が作用することを抑制して、係合部２５の破損等を防止することができる。  In addition, theduct cover 20 and theduct member 30 are guided by theconvex portion 45 so that the mounting becomes easy, so that an excessive force is prevented from acting on the engagingportion 25, and the engagingportion 25 is damaged. Can be prevented.

また、ダクトカバー２０及びダクト部材３０が装着された後は、凸部４５によってダクトカバー２０の係合部２５の過大な変位が規制されるので、係合部２５と係合受部４２との係合の外れを防止することができる。また、凸部４５は、アンダーカット形状ではないので、内箱の加工が容易である。  In addition, after theduct cover 20 and theduct member 30 are mounted, an excessive displacement of the engagingportion 25 of theduct cover 20 is restricted by theconvex portion 45, so that theengagement portion 25 and theengagement receiving portion 42 The disengagement can be prevented. Moreover, since theconvex part 45 is not an undercut shape, the process of an inner box is easy.

図７（Ｂ）に示すように、係合受部材４０は、基部４１と、基部４１から突設される係合受部４２と、を有し、内箱２ｂの背面側から取り付けられる。詳しくは、係合受部４２は、内箱２ｂに形成される取付孔４６に挿通されて内箱２ｂの内側に突き出される。  As shown in FIG. 7B, theengagement receiving member 40 has abase 41 and anengagement receiving part 42 protruding from thebase 41, and is attached from the back side of theinner box 2b. Specifically, theengagement receiving portion 42 is inserted into the mountinghole 46 formed in theinner box 2b and protrudes to the inner side of theinner box 2b.

係合受部材４０の基部４１は内箱２ｂの背面側に当接し、背面側から図示しないテープ等で固定される。また更に、基部４１は、断熱箱体２を組み立てる際に断熱箱体２の内部に発泡充填される断熱材２ｃによって固定される。  Thebase 41 of theengagement receiving member 40 abuts on the back side of theinner box 2b and is fixed from the back side with a tape (not shown). Furthermore, thebase 41 is fixed by aheat insulating material 2 c that is foam-filled inside theheat insulating box 2 when theheat insulating box 2 is assembled.

前述のとおり、ダクトカバー２０の係合部２５は、係合受部材４０の係合受部４２に係合する。これにより、ダクトカバー２０が内箱２ｂに固定される。詳しくは、ダクトカバー２０の係合部２５には、左右方向の内側に向かって突設される爪部２６が設けられており、内箱２ｂの内側に突き出される係合受部４２には、左右方向の外側に向かって突設される突起部４３が形成されている。  As described above, the engagingportion 25 of theduct cover 20 is engaged with the engaging receivingportion 42 of the engaging receivingmember 40. Thereby, theduct cover 20 is fixed to theinner box 2b. Specifically, the engagingportion 25 of theduct cover 20 is provided with aclaw portion 26 that protrudes inward in the left-right direction, and the engaging receivingportion 42 that protrudes inside theinner box 2b includes A projection 43 is formed to project outward in the left-right direction.

なお、突起部４３は、係合受部４２の側面略中央に凹部を形成して係合受部４２の先端近傍を相対的に厚くすることよって形成されても良い。また、係合受部４２の側面略中央に凹部を形成して突起部４３を形成することにより、係合受部４２の上下端部近傍を突起部４３と同程度の厚みに形成しても良い。これにより、係合受部材４０の軽量化を図りつつ、係合受部４２の強度を確保することができる。  Note that the protrusion 43 may be formed by forming a recess substantially in the center of the side surface of theengagement receiving portion 42 and relatively thickening the vicinity of the tip of theengagement receiving portion 42. In addition, by forming a recess 43 by forming a recess substantially at the center of the side surface of theengagement receiving portion 42, the vicinity of the upper and lower end portions of theengagement receiving portion 42 can be formed to have the same thickness as the protrusion 43. good. Thereby, the strength of theengagement receiving portion 42 can be ensured while reducing the weight of theengagement receiving member 40.

そして、係合部２５の爪部２６が係合受部４２の突起部４３に引っ掛かることによりダクトカバー２０と内箱２ｂとが固定される。これにより、ダクト部材３０は、ダクトカバー２０によって内箱２ｂ側へ押圧される。即ち、ダクト部材３０は、ダクトカバー２０により全体的に圧力を受けて、内箱２ｂに押し付けられる。その結果、ダクト部材３０のシール面３６と内箱２ｂとの間に間隙が生ずることが抑制され、供給風路１５のシール性が向上する。  And theduct cover 20 and theinner box 2b are fixed when the nail | clawpart 26 of theengaging part 25 is hooked on the projection part 43 of theengagement receiving part 42. FIG. Thereby, theduct member 30 is pressed by theduct cover 20 to theinner box 2b side. That is, theduct member 30 is entirely pressed by theduct cover 20 and pressed against theinner box 2b. As a result, the occurrence of a gap between the sealingsurface 36 of theduct member 30 and theinner box 2b is suppressed, and the sealing performance of thesupply air passage 15 is improved.

また、係合部２５及び係合受部材４０は、ダクト部材３０の左右に設けられる。そのため、ダクト部材３０の左右両側でダクト部材３０と内箱２ｂとの押し付け力が高められ、これにより、高いシール性が発揮される。  Further, the engagingportion 25 and theengagement receiving member 40 are provided on the left and right of theduct member 30. Therefore, the pressing force between theduct member 30 and theinner box 2b is increased on both the left and right sides of theduct member 30, thereby exhibiting high sealing performance.

また、係合部２５は、左右方向の内側に向かって突設される爪部２６を有し、係合受部材４２に対して左右方向の外側から係合するので、ダクトカバー２０の側面部２３近傍を外側へ拡げることにより、係合部２５と係合受部４２との係合を容易に解除することがきる。即ち、ダクトカバー２０及びダクト部材３０を容易に取り外すことができる。また、ダクトカバー２０を取り外す際、ダクトカバー２０の係合部２５や爪部２６に過大な力が作用しないので、係合部２５や爪部２６が破損しにくい。  Further, since the engagingportion 25 has aclaw portion 26 projecting inward in the left-right direction and engages with theengagement receiving member 42 from the outer side in the left-right direction, the side portion of theduct cover 20 By enlarging the vicinity of 23 to the outside, the engagement between theengagement portion 25 and theengagement receiving portion 42 can be easily released. That is, theduct cover 20 and theduct member 30 can be easily removed. Further, when theduct cover 20 is removed, an excessive force does not act on the engagingportion 25 and theclaw portion 26 of theduct cover 20, so that the engagingportion 25 and theclaw portion 26 are not easily damaged.

また、前述のとおり、ダクトカバー２０は、例えば、ＰＰ等の合成樹脂から形成されており、このダクトカバー２０に係合部２５が形成されている。これにより、ＰＳ等で成形されるダクト部材３０に係合部を形成する場合に比べ、係合部２５の強度を高く確保することができる。これにより、ダクト部材３０と内箱２ｂとの押し付け力を高めてシール性を向上させると共に、取り付けや取り外し時の係合部２５の破損等を抑制することができる。  Further, as described above, theduct cover 20 is made of a synthetic resin such as PP, for example, and the engagingportion 25 is formed on theduct cover 20. Thereby, compared with the case where an engaging part is formed in theduct member 30 shape | molded by PS etc., the intensity | strength of theengaging part 25 can be ensured high. Accordingly, the pressing force between theduct member 30 and theinner box 2b can be increased to improve the sealing performance, and the breakage of the engagingportion 25 at the time of attachment or removal can be suppressed.

ダクトカバー２０の側面部２３は、前面部２２の左右両端部から連続して斜め背面側に折れ曲がるよう延設される。これにより、内箱２ｂの凸部４５、係合部２５、係合受部材４０及びダクト部材３０等を隠すことができ、意匠性が向上する。  Theside surface portion 23 of theduct cover 20 extends continuously from the left and right end portions of thefront surface portion 22 so as to bend diagonally to the back surface side. Thereby, theconvex part 45 of theinner box 2b, the engagingpart 25, theengagement receiving member 40, theduct member 30, etc. can be hidden, and the design property improves.

また、ダクトカバー２０の左右両端部と内箱２ｂとの間には、僅かな間隙４７を設けている。つまり、ダクトカバー２０の側面部２３の端部は、内箱２ｂに当接していない。間隙４７を設けることにより、ダクトカバー２０を取り外す際、間隙４７に指先（爪先）若しくは工具等を差し込むことができる。これにより、ダクトカバー２０の取り外しが容易になる。  Aslight gap 47 is provided between the left and right ends of theduct cover 20 and theinner box 2b. That is, the end portion of theside surface portion 23 of theduct cover 20 is not in contact with theinner box 2b. By providing thegap 47, when removing theduct cover 20, it is possible to insert a fingertip (toe) or a tool into thegap 47. Thereby, removal of theduct cover 20 becomes easy.

また、ダクトカバー２０の左右外側には、ダクトカバー２０の側面部２３端部近傍が左右外側へ弾性変形することを許容する空間部４８を確保している。即ち、ダクトカバー２０の左右外側には、ダクトカバー２０と干渉する形状を形成しない。  Further, on the left and right outer sides of theduct cover 20, aspace 48 that allows the vicinity of the end of theside surface portion 23 of theduct cover 20 to be elastically deformed left and right is secured. That is, a shape that interferes with theduct cover 20 is not formed on the left and right outer sides of theduct cover 20.

これにより、ダクトカバー２０の取り外し時に、ダクトカバー２０の側面部２３を左右に拡げ易くなる。また、空間部４８形成することにより、作業者は、ダクトカバー２０を掴み易くなり、指先（爪先）や工具等を間隙４７に差し込む作業も容易に行うことができる。  Thereby, when theduct cover 20 is removed, theside surface portion 23 of theduct cover 20 can be easily expanded to the left and right. In addition, by forming thespace 48, the operator can easily grasp theduct cover 20, and can easily perform the work of inserting a fingertip (toe) or a tool into thegap 47.

また、係合部２５と凸部４５との間には、係合部２５が左右外側へ弾性変形することを許容する空間部４９が確保されている。これにより、ダクトカバー２０の取り付け及び取り外し作業が容易になる。  Further, aspace 49 that allows the engagingportion 25 to be elastically deformed to the left and right outside is secured between the engagingportion 25 and theconvex portion 45. Thereby, the attachment and removal work of theduct cover 20 is facilitated.

即ち、ダクトカバー２０の取り付け時及び取り外し時には、係合部２５は、凸部４５によって案内されつつ、空間部４９によって、係合受部４２との係脱が可能な程度に外側へと拡がるよう変形することができる。これにより、ダクトカバー２０を容易に取り付ける若しくは取り外すことができる。  That is, when theduct cover 20 is attached and removed, the engagingportion 25 is guided by theconvex portion 45 and is deformed so as to expand outward by thespace portion 49 to the extent that it can be engaged with and disengaged from the engaging receivingportion 42. can do. Thereby, theduct cover 20 can be easily attached or detached.

図８は、冷蔵庫１の係合部２５の近傍を示す拡大斜視図である。なお、図８は、ダクトカバー２０にダクト部材３０が取り付けられた状態を示し、図８において、紙面右上が冷蔵庫１の前面側である。  FIG. 8 is an enlarged perspective view showing the vicinity of the engagingportion 25 of therefrigerator 1. 8 shows a state in which theduct member 30 is attached to theduct cover 20. In FIG. 8, the upper right side of the drawing is the front side of therefrigerator 1.

図８に示すように、係合部２５は、ガイド部２４に形成されており、係合部２５の上下近傍のガイド部２４には、略Ｖ形状の切欠部２９が形成されている。これにより、係合部２５は、ガイド部２４から独立して弾性変形し易くなり、ダクトカバー２０の取り付け及び取り外しが容易になる。  As shown in FIG. 8, the engagingportion 25 is formed in theguide portion 24, and a substantially V-shapedcutout portion 29 is formed in theguide portion 24 near the top and bottom of the engagingportion 25. Thereby, the engagingpart 25 becomes easy to elastically deform independently of theguide part 24, and attachment and removal of theduct cover 20 become easy.

また、係合部２５をガイド部２４に形成することにより、係合部２５をガイド部２４とは別途独立して形成する場合に比べ、ダクトカバー２０の成形が容易になる。  In addition, by forming the engagingportion 25 in theguide portion 24, theduct cover 20 can be easily formed as compared with the case where the engagingportion 25 is formed separately from theguide portion 24.

ダクトカバー２０には、側面部２３とガイド部２４との間をつなぐ補強リブ２７が複数形成される。特に、係合部２５の近傍に形成される補強リブ２７は、係合部２５の強度を高め、係合部２５と係合受部４２（図７参照）との係合力を高め、係合部２５の外れを抑制する効果を持つ。  Theduct cover 20 is formed with a plurality of reinforcingribs 27 that connect between theside surface portion 23 and theguide portion 24. In particular, the reinforcingrib 27 formed in the vicinity of the engagingportion 25 increases the strength of the engagingportion 25 and increases the engaging force between the engagingportion 25 and the engagement receiving portion 42 (see FIG. 7). This has the effect of suppressing the detachment of theportion 25.

図９は、冷蔵庫１の内箱２ｂ及び係合受部材４０を示す背面分解斜視図である。なお、図９において、紙面左上が冷蔵庫１の前面側である。図９に示すように、内箱２ｂは、例えば、ＡＢＳ樹脂（アクリロニトリル、ブタジエン、スチレン共重合樹脂）で形成され、内箱２ｂには、係合受部材４０を取り付けるための取付孔４６が形成される。取付孔４６は、打ち抜き孔であり、その加工は、容易である。  FIG. 9 is a rear exploded perspective view showing theinner box 2 b and theengagement receiving member 40 of therefrigerator 1. In FIG. 9, the upper left side of the drawing is the front side of therefrigerator 1. As shown in FIG. 9, theinner box 2b is formed of, for example, ABS resin (acrylonitrile, butadiene, styrene copolymer resin), and theinner box 2b is formed with a mountinghole 46 for mounting theengagement receiving member 40. Is done. The mountinghole 46 is a punched hole, and its processing is easy.

前述のとおり、係合受部材４０は、内箱２ｂの背面に当接する基部４１と、基部４１から前方に向かって略垂直に立設される係合受部４２と、係合受部４２に形成されてダクトカバー２０の係合部２５（図８参照）を係合させるための突起部４３（図７参照）と、を有する。  As described above, theengagement receiving member 40 includes thebase portion 41 that abuts on the back surface of theinner box 2b, theengagement receiving portion 42 that is erected substantially vertically from thebase portion 41 toward the front, and theengagement receiving portion 42. And a protrusion 43 (see FIG. 7) that is formed and engages the engaging portion 25 (see FIG. 8) of theduct cover 20.

基部４１は、係合受部材４０を内箱２ｂの背面に固定するための部分であり、内箱ｂ２の背面に当接する略矩形板状の形態を成す。基部４１は、内箱２ｂの取付孔４６より大きく、係合受部材４０を内箱２ｂに取り付けた際に、留め具としての役割を果たす。  Thebase 41 is a portion for fixing theengagement receiving member 40 to the back surface of theinner box 2b, and has a substantially rectangular plate shape that contacts the back surface of the inner box b2. Thebase 41 is larger than theattachment hole 46 of theinner box 2b, and plays a role as a fastener when theengagement receiving member 40 is attached to theinner box 2b.

基部４１から突設される係合受部４２は、内箱２ｂの取付孔４６に背面側から挿入されて、内箱２ｂの内側に配置される。そして、係合受部材４０の基部４１は、内箱の背面側からテープ等で仮固定される。内箱２ｂと外箱２ａ（図４参照）を組み立て、内箱２ｂと外箱２ａとの間に断熱材２ｃ（図４参照）としてのポリウレタンが発泡される。これにより、係合受部材４０が強固に固定される。  Theengagement receiving portion 42 protruding from thebase portion 41 is inserted into the mountinghole 46 of theinner box 2b from the back side and is arranged inside theinner box 2b. Then, thebase 41 of theengagement receiving member 40 is temporarily fixed with a tape or the like from the back side of the inner box. Theinner box 2b and theouter box 2a (see FIG. 4) are assembled, and polyurethane as aheat insulating material 2c (see FIG. 4) is foamed between theinner box 2b and theouter box 2a. Thereby, theengagement receiving member 40 is firmly fixed.

以上、本発明の実施形態に係る冷蔵庫について説明したが、本発明は、これに限定されるものではなく、本発明の要旨を逸脱しない範囲で、種々の変更が可能である。  As mentioned above, although the refrigerator which concerns on embodiment of this invention was demonstrated, this invention is not limited to this, A various change is possible in the range which does not deviate from the summary of this invention.

１ 冷蔵庫
２ 断熱箱体
２ａ 外箱
２ｂ 内箱
２ｃ 断熱材
３ 冷蔵室
１５ 供給風路
２０ ダクトカバー
２４ ガイド部
２５ 係合部
２６ 爪部
３０ ダクト部材
４０ 係合受部材
４１ 基部
４２ 係合受部
４３ 突起部
４５ 凸部
４６ 取付孔
４７ 間隙
４８ 空間部
４９ 空間部DESCRIPTION OFSYMBOLS 1Refrigerator 2Heat insulation box2a Outer box2b Inner box 2cHeat insulating material 3Refrigerating room 15Supply air path 20Duct cover 24Guide part 25Engagement part 26Claw part 30Duct member 40Engagement receiving member 41Base 42 Engagement reception part 43Projection 45Projection 46Mounting Hole 47Gap 48Space 49 Space

Claims (7)

Translated fromJapanese

外箱と内箱との間に断熱材が充填されて前方が開口する断熱箱体と、
前記内箱の前面に設けられて前記内箱との間に風路を形成するダクト部材と、
前記ダクト部材の前面に設けられて前記ダクト部材を覆うダクトカバーと、
前記内箱に固定されて前記ダクトカバーが係合される係合受部材と、を備え、
前記内箱には、前記ダクト部材の左右外側に前記係合受部材を取り付ける取付孔が形成され、
前記係合受部材は、前記内箱の背面に当接する基部と、前記基部から前方に突設されて前記取付孔に挿通される係合受部と、前記係合受部から左右方向の外側に向かって突設される突起部と、を有し、
前記ダクトカバーには、その左右に係合部が形成され、
前記係合部は、左右方向の内側に向かって突設される爪部を有し、前記係合受部材に対して左右方向の外側から係合することを特徴とする冷蔵庫。A heat-insulating box body filled with a heat insulating material between the outer box and the inner box and opened at the front;
A duct member provided on the front surface of the inner box to form an air path between the inner box;
A duct cover provided on the front surface of the duct member and covering the duct member;
An engagement receiving member fixed to the inner box and engaged with the duct cover,
The inner box is formed with mounting holes for attaching the engagement receiving members to the left and right outer sides of the duct member,
The engagement receiving member includes a base that abuts on the back surface of the inner box, an engagement receiving part that protrudes forward from the base and is inserted into the mounting hole, and an outer side in the left-right direction from the engagement receiving part. And a projecting portion projecting toward the
The duct cover is formed with engaging portions on the left and right sides thereof,
The said engaging part has a nail | claw part protrudingly provided toward the inner side of the left-right direction, and is engaged with the said engagement receiving member from the outer side of the left-right direction. 前記内箱には、前記ダクト部材の左右外側に沿って上下方向に延在する凸部が形成されることを特徴とする請求項１に記載の冷蔵庫。  The refrigerator according to claim 1, wherein the inner box is formed with a convex portion extending in the vertical direction along the left and right outer sides of the duct member. 前記凸部は、前記係合受部材の外側に形成されることを特徴とする請求項２に記載の冷蔵庫。  The refrigerator according to claim 2, wherein the convex portion is formed outside the engagement receiving member. 前記ダクトカバーには、後方に向かって突設されて前記ダクト部材の左右外側に沿って上下方向に延在するガイド部が形成され、
前記係合部は、前記ガイド部に形成されることを特徴とする請求項１ないし請求項３の何れか１項に記載の冷蔵庫。The duct cover is formed with a guide portion protruding rearward and extending in the vertical direction along the left and right outer sides of the duct member,
The refrigerator according to any one of claims 1 to 3, wherein the engaging portion is formed in the guide portion. 前記ダクトカバーと前記内箱とを固定する取付部材と、を有し、
前記ダクトカバーは、その上部及び下部において前記取付部材によって前記内箱に固定され、
前記係合部は、前記上部の取付部材よりも下方且つ前記下部の取付部材よりも上方に形成されることを特徴とする請求項１ないし請求項４の何れか１項に記載の冷蔵庫。An attachment member for fixing the duct cover and the inner box;
The duct cover is fixed to the inner box by the mounting member at an upper part and a lower part thereof,
The refrigerator according to any one of claims 1 to 4, wherein the engagement portion is formed below the upper attachment member and above the lower attachment member. 前記ダクトカバーの左右外側には、前記ダクトカバーの端部近傍が左右外側へ弾性変形することを許容する空間部が形成されることを特徴とする請求項１ないし請求項５の何れか１項に記載の冷蔵庫。  The space part which accept | permits the edge part vicinity of the said duct cover is elastically deformed right and left outer side is formed in the left-right outer side of the said duct cover, The any one of Claim 1 thru | or 5 characterized by the above-mentioned. Refrigerator. 前記ダクトカバーの左右の端部近傍を外側へ弾性変形させることよって、前記係合部と前記係合受部との係合が解除されることを特徴とする請求項１ないし請求項６の何れか１項に記載の冷蔵庫。  The engagement between the engagement portion and the engagement receiving portion is released by elastically deforming the vicinity of the left and right end portions of the duct cover outward. The refrigerator of Claim 1.

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