JPH03113270A - Heat insulating door - Google Patents

Heat insulating door

Info

Publication number
JPH03113270A
JPH03113270A JP25262889A JP25262889A JPH03113270A JP H03113270 A JPH03113270 A JP H03113270A JP 25262889 A JP25262889 A JP 25262889A JP 25262889 A JP25262889 A JP 25262889A JP H03113270 A JPH03113270 A JP H03113270A
Authority
JP
Japan
Prior art keywords
door
plate
inner plate
receiver
heat insulating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP25262889A
Other languages
Japanese (ja)
Inventor
Chiaki Ito
伊藤 千明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP25262889A priority Critical patent/JPH03113270A/en
Publication of JPH03113270A publication Critical patent/JPH03113270A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent a shelf receiver from deforming and the inner plate of a door from warping by forming a through hole at a position opposed to the shelf receiver of the inner plate of the door at a reinforcing plate, and filling a foamable heat insulator also in the receiver via the hole. CONSTITUTION:A plurality of through holes 4a are, for example, opened at positions opposed to a shelf receiver 2a of an inner plate 2 of a door at a reinforcing plate 4 made of metal to be superposed on the rear surface of the plate 2, a foamable heat insulator 5 is completely filled in the receiver 2a from the holes in the case of foaming, and no space is formed in the receiver as a prior art. Thus, warpage of a heat insulating door generated due to temperature difference between the interior and the exterior of a refrigerator can be effectively prevented by the plate superposed on the rear surface of the inner plate of the door, and the deformation of the receiver, for example, raised at the inner plate can be effectively prevented by the presence of the receiver of the insulator invaded from the holes opened at the reinforcing plate.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、冷蔵庫扉等として用いられる断熱扉の構造
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to the structure of a heat insulating door used as a refrigerator door or the like.

[従来の技術] 第9図は例えば実公昭58−54623号公報に示され
た従来の断熱扉の断面図である0図において(1)は金
属製の扉外板とこれに対向して配設される合成樹脂製の
扉内板(2)で、前記内板(2)にはポケット類のうけ
や、内板自身の補強用に横溝部が形成されている。また
、これら両板(1) (2)間には周縁部で装着される
合成樹脂製の扉枠体(3)とによって囲繞形成される空
間に硬質ウレタンフオーム等の断熱材(4)を充填して
形成されている。扉枠体(3)は、外板側周縁部に扉外
板(1)を咬持し固定する咬持固定溝(5)が、内板側
周縁部にバッキング(図示せず)を取り付けるバッキン
グ取付溝(6)と内板方向に延出する支持片(7)がそ
れぞれ設けられて合成樹脂材料で押出成形で形成されて
いる。
[Prior Art] Fig. 9 is a sectional view of a conventional heat insulating door shown in, for example, Japanese Utility Model Publication No. 58-54623. An inner door plate (2) made of synthetic resin is provided, and horizontal grooves are formed in the inner plate (2) for receiving pockets and for reinforcing the inner plate itself. In addition, a heat insulating material (4) such as hard urethane foam is filled in the space surrounded by the synthetic resin door frame (3) attached at the periphery between these two plates (1) and (2). It is formed as follows. The door frame body (3) has a gripping fixing groove (5) that grips and fixes the door outer panel (1) on the outer panel side peripheral edge, and a backing that attaches a backing (not shown) to the inner panel side peripheral edge. A mounting groove (6) and a support piece (7) extending toward the inner plate are provided and formed by extrusion molding from a synthetic resin material.

また、内板(2)裏側には補強板(8)が形成されてい
る。
Further, a reinforcing plate (8) is formed on the back side of the inner plate (2).

[発明が解決しようとする課題] 従来の冷蔵庫扉は、以上のように構成されており、その
使用中に冷蔵庫扉と冷蔵庫本体との気密性が悪くなると
いう問題があるため、補強板を内板裏側に配設して、冷
却中のソリ対策をしていた。
[Problems to be Solved by the Invention] Conventional refrigerator doors are constructed as described above, but there is a problem that the airtightness between the refrigerator door and the refrigerator body deteriorates during use, so a reinforcing plate is installed inside the refrigerator door. It was placed on the back side of the board to prevent warping during cooling.

つまり、冷蔵庫の運転中、扉内板側は冷却されるのに対
し扉外板側はほぼ外気と同じ温度に保たれたまま°であ
るために、扉内板側の断熱材が収縮するのに対し、扉外
板側はそのままの状態であるため、第8図のようにソリ
が発生して、庫内との間にスキができ、気密性が低下す
るという問題点の改善策として補強板が配設されていた
が、内板横溝部には断熱材が充填せずに空気層が残り冷
却中に内部圧力の低下によって変形するという問題があ
った。
In other words, while the refrigerator is operating, the inner door panel is cooled, while the outer door panel remains at almost the same temperature as the outside air, causing the insulation material on the inner door panel to shrink. On the other hand, since the outer side of the door remains as it is, it warps as shown in Figure 8, creating a gap between it and the inside of the refrigerator, reducing airtightness. However, there was a problem in that the lateral grooves of the inner plate were not filled with heat insulating material and an air layer remained, causing deformation due to a drop in internal pressure during cooling.

この発明は上記のような問題点を解消するためになされ
たもので、ソリの発生を防止でき内板の変形の少ない強
固な断熱扉を得ることを目的とする。
This invention was made to solve the above-mentioned problems, and an object of the present invention is to obtain a strong heat-insulating door that can prevent warpage and minimize deformation of the inner plate.

[課題を解決するための手段] この発明に係る断熱扉は、扉内板側の横溝部に対応する
箇所に複数個の穴を形成した補強板を配設したものであ
る。
[Means for Solving the Problems] A heat insulating door according to the present invention is provided with a reinforcing plate in which a plurality of holes are formed at locations corresponding to the horizontal grooves on the inner panel side of the door.

[作 用] この発明における断熱扉は、冷蔵庫運転時、扉内板側の
断熱材は収縮しようとするが、扉内板裏側に配設された
補強板により収縮がおさえられるとともに、内板横溝部
にも補強板の穴から断熱材が充填されるものである。
[Function] In the heat insulating door of the present invention, when the refrigerator is operated, the heat insulating material on the inner plate side of the door tends to shrink, but the shrinkage is suppressed by the reinforcing plate arranged on the back side of the inner plate, and the inner plate horizontal groove The holes in the reinforcing plate are also filled with heat insulating material.

[実施例] 以下、この発明の一実施例を図について説明する。第1
図、第3図において断熱扉は、金属製の扉外板(1)と
、これに対向して配設される合成樹脂製の扉内板(2)
、上記扉内板(2)裏側に内板横溝部に対応する複数個
の穴を形成した補強板(8)を設けている。扉外板(1
)と扉内板(2)間の周縁部には合成樹脂製の扉枠体(
3)があって、これらの部品で形成される空間に硬質ウ
レタンフオーム等の断熱材(4)が充填される。
[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
In Figures 3 and 3, the heat insulating door consists of a metal door outer plate (1) and a synthetic resin door inner plate (2) disposed opposite to this.
A reinforcing plate (8) in which a plurality of holes corresponding to the inner plate horizontal grooves are formed is provided on the back side of the door inner plate (2). Door outer panel (1
) and the door inner plate (2), there is a synthetic resin door frame (
3), and the space formed by these parts is filled with a heat insulating material (4) such as hard urethane foam.

また扉枠体(3)は、外板側周縁部に扉外板(1)を咬
し固定する咬持固定溝(5)が、内板側周縁部にキャビ
ネットとの密閉をするためのバッキングを取り付けるバ
ッキング取付溝(6)と内板方向に延出する支持片(7
)がそれぞれ設けられて押呂成形で形成されている。
In addition, the door frame (3) has a gripping fixing groove (5) for gripping and fixing the door outer panel (1) on the outer edge of the outer panel, and a backing for sealing the door with the cabinet on the inner edge of the inner panel. The backing mounting groove (6) for attaching the backing and the support piece (7) extending toward the inner plate
) are respectively provided and formed by press molding.

この断熱扉(9)を冷蔵庫に取り付けて用いると、冷蔵
室を区画している断熱J′1(9)の扉内板(2)側は
冷却される。一方、断熱扉(9)の扉外板(1)側はほ
ぼ外気と同じ温度に保たれたままである。
When this heat insulation door (9) is attached to a refrigerator and used, the door inner plate (2) side of the heat insulation J'1 (9) that partitions the refrigerator compartment is cooled. On the other hand, the door outer plate (1) side of the heat insulating door (9) remains at approximately the same temperature as the outside air.

このため、扉外板(1)側近値の断熱材(4)はそのま
まであるのに対し、扉内板(2)側近値の断熱材(4)
は収縮しようという力がはたらくが、扉内板(2)裏側
の補強板(8)によって収縮がおさえられ、断熱扉(9
)はほとんどソリが生じない、そして第2図のように扉
内板(2)に一体に形成された横溝部(11)にあう箇
所に対応するように穴をあけることにより、横溝部(1
1)への断熱材(9)の充填もよくなり、強度もアップ
する。
For this reason, while the door outer panel (1), the insulation material (4) with the closest value, remains the same, the door inner panel (2), the insulation material (4) with the closest value, remains the same.
A force acts to shrink the door, but the shrinkage is suppressed by the reinforcing plate (8) on the back side of the door inner plate (2), and the insulation door (9
) almost never warps, and by drilling holes corresponding to the horizontal grooves (11) integrally formed on the inner door plate (2) as shown in Figure 2, the horizontal grooves (1
The filling of the heat insulating material (9) into 1) is improved, and the strength is also increased.

[発明の効果] 以上のようにこの発明によれば、断熱扉の庫内と庫外の
温度差により生ずる、扉体のソリおよび扉内板横溝部の
変形を、扉内板裏側に内板横溝部に対応する箇所に穴を
あけた補強板を配設した一体に発泡することによりきわ
めて安価に防止できる効果がある。
[Effects of the Invention] As described above, according to the present invention, warping of the door body and deformation of the horizontal groove portion of the door inner plate caused by the temperature difference between the inside and outside of the insulated door can be prevented by installing an inner plate on the back side of the door inner plate. By integrally foaming and providing a reinforcing plate with holes in locations corresponding to the lateral grooves, it is possible to prevent this problem at a very low cost.

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

第1図、第2図は本発明の斜視図、第3図は本発明の断
熱扉の断面図、第4図、第5図は他の実施例の斜視図、
第6図は他の実施例の断面図、第7図は断熱扉の斜視図
、第8図は従来の断熱扉、第9図は従来の断熱扉の断面
図である。 図において、(1)は扉外板、(2)は扉内板、(3)
は扉枠体、(4)は断熱材、(8)は補強板、(9)は
断熱扉、(10)は穴、(11)は横溝部、 (14)
はツメである。
1 and 2 are perspective views of the present invention, FIG. 3 is a sectional view of the heat insulating door of the present invention, and FIGS. 4 and 5 are perspective views of other embodiments.
FIG. 6 is a cross-sectional view of another embodiment, FIG. 7 is a perspective view of a heat-insulating door, FIG. 8 is a conventional heat-insulating door, and FIG. 9 is a cross-sectional view of a conventional heat-insulating door. In the figure, (1) is the door outer panel, (2) is the door inner panel, and (3) is the door outer panel.
is the door frame, (4) is the insulation material, (8) is the reinforcing plate, (9) is the insulation door, (10) is the hole, (11) is the horizontal groove, (14)
is a claw.

Claims (1)

【特許請求の範囲】[Claims] 扉枠体と、金属製の扉外板と、合成樹脂製の扉内板及び
扉内板で形成される空間内に注入発泡された発泡断熱材
とからなる断熱扉において、上記扉内板の裏面に、複数
個の穴を扉内板横溝部に合う箇所に対応するように形成
した補強板を配設したことを特徴とする断熱扉。
In an insulated door consisting of a door frame, a metal outer door plate, a synthetic resin door inner plate, and a foamed insulation material injected and foamed into the space formed by the door inner plate, the door inner plate is A heat insulating door characterized in that a reinforcing plate is disposed on the back side of the door, the reinforcing plate having a plurality of holes formed to correspond to the lateral grooves of the inner plate of the door.
JP25262889A 1989-09-28 1989-09-28 Heat insulating door Pending JPH03113270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25262889A JPH03113270A (en) 1989-09-28 1989-09-28 Heat insulating door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25262889A JPH03113270A (en) 1989-09-28 1989-09-28 Heat insulating door

Publications (1)

Publication Number Publication Date
JPH03113270A true JPH03113270A (en) 1991-05-14

Family

ID=17240007

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25262889A Pending JPH03113270A (en) 1989-09-28 1989-09-28 Heat insulating door

Country Status (1)

Country Link
JP (1) JPH03113270A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012057838A (en) * 2010-09-07 2012-03-22 Toshiba Corp Refrigerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012057838A (en) * 2010-09-07 2012-03-22 Toshiba Corp Refrigerator

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