JPS5910549Y2 - Door opening/closing detection device for refrigerators, etc. - Google Patents

Description

【考案の詳細な説明】 本考案は冷蔵庫等箱体におけるドアの半開き状態、ある
いは開閉状態を検知し、ブザー、ランプ等で所定の制御
を行うための光学素子を使用したドア開閉検知装置に関
し、構或簡単にして安価に得ることを目白勺とする。[Detailed description of the invention] The present invention relates to a door opening/closing detection device that uses an optical element to detect the half-open state or open/closed state of a door in a box body such as a refrigerator, and to perform predetermined control using a buzzer, lamp, etc. The aim is to simplify the structure and obtain it at low cost.

この種従来例としては庫内灯、あるいは庫内かくはん用
ファンを制御するドアスイッチを併用したもの、又は一
枚のドアに設けた光学回路をオンオフする光学的ドア開
閉装置が知られている。As conventional examples of this kind, there are known devices that use a door switch to control an internal light or a stirring fan in the refrigerator, or an optical door opening/closing device that turns on and off an optical circuit provided in one door.

しかしながら従来の装置において、例えば、ドアスイッ
チを利用したものにあっては、回路上複雑となり、また
スイッチ自体も多数の接点群を必要とした。However, in conventional devices using door switches, for example, the circuitry is complicated, and the switch itself requires a large number of contact groups.

また、一枚のドアの開閉を検知するために多数の発光、
受光素子を必要とし、製造コストの高騰を招いていた。In addition, in order to detect the opening and closing of a single door, a large number of light emitting lights,
This requires a light-receiving element, leading to a rise in manufacturing costs.

本考案は、このような欠点をなくシ、一対の発光受光素
子にて複数枚のドアのうち少なくとも任意の一つが開い
た場合にも、それを検出できるようにして、製造ゴスト
の低減を計るものである。The present invention eliminates such drawbacks and enables a pair of light-emitting and light-receiving elements to detect when at least one of a plurality of doors is opened, thereby reducing manufacturing dust. It is something.

以下本考案を冷蔵庫に適用した一実施例を示す図面を参
照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention applied to a refrigerator will be described below with reference to the drawings.

１は冷蔵庫本体で、上方には冷凍室ドア２、下方には冷
蔵室ドア３を開閉自在に設けてある。Reference numeral 1 denotes a refrigerator body, which has a freezer compartment door 2 at the top and a refrigerator compartment door 3 at the bottom, which can be opened and closed.

４は前記、冷蔵庫本体１に固定され、かつ冷凍室ドア２
、冷蔵室ドア３の間にあって、これらの開閉軸と１なる
ヒンジである。4 is fixed to the refrigerator main body 1 and is connected to the freezer compartment door 2.
This hinge is located between the refrigerator compartment door 3 and the opening/closing shaft thereof.

５は前記ヒンジ４の両面に設けた発光、受光ユニットで
あり、この発光、受光ユニットの上向き方向に傾斜した
一面は発光素子６、下向き方向に傾斜した他面には受光
素子７が設けられ、又前記発光素子６と対面的に冷凍室
ドア゛２に発光素子６からの光を直下に案内する第１反
射部材８を設け、さらに、受光素子７と対面的にすなわ
ち第１反射部材８からの光を受光素子７に案内する第２
反射部材９を冷蔵室ドア３に設けている。5 is a light emitting/light receiving unit provided on both sides of the hinge 4; one side of the light emitting/light receiving unit that is inclined upward is provided with a light emitting element 6, and the other side that is inclined downward is provided with a light receiving element 7; Further, a first reflecting member 8 for guiding the light from the light emitting element 6 directly below is provided on the freezer compartment door 2 facing the light emitting element 6, and a first reflecting member 8 is provided facing the light receiving element 7, that is, from the first reflecting member 8. The second guides the light to the light receiving element 7.
A reflective member 9 is provided on the refrigerator compartment door 3.

１０はヒンジ４を貫通し、発光素子６から発せられた光
が第１反射部材８で屈折反射され、第２反射部材９に達
するための光通過用孔である。Reference numeral 10 denotes a light passage hole that passes through the hinge 4, through which light emitted from the light emitting element 6 is refracted and reflected by the first reflecting member 8 and reaches the second reflecting member 9.

このような構戊において、両ドア２，３が閉状態のとき
は、発光素子６から発せられた光が、第１反射部材８で
反射され光通過用孔１０を通り、第２反射部材９で反射
され、受光素子７に至る光学回路が閉状態となり、例え
ば、警報ブザー、ランプ（図示せず）等の作動は生じな
い。In such a structure, when both doors 2 and 3 are in a closed state, light emitted from the light emitting element 6 is reflected by the first reflecting member 8, passes through the light passage hole 10, and passes through the second reflecting member 9. The light is reflected by the light, and the optical circuit leading to the light receiving element 7 is closed, so that, for example, an alarm buzzer, a lamp (not shown), etc. are not activated.

しかしながら冷凍室ドア２、冷蔵室ドア３の一方、ある
いは双方が開かれると第１および第２反射部材８，９が
発光および受光素子６，７からずれる。However, when one or both of the freezer compartment door 2 and the refrigerator compartment door 3 are opened, the first and second reflective members 8 and 9 are displaced from the light emitting and light receiving elements 6 and 7.

したがって、発光素子６の光は、第１反射部材８、光通
過用孔１０、第２反射部材９を介して受光素子７に伝わ
らなくなり、光学回路が開状態となる。Therefore, the light from the light emitting element 6 is no longer transmitted to the light receiving element 7 via the first reflecting member 8, the light passage hole 10, and the second reflecting member 9, and the optical circuit is in an open state.

ドアがわずかに開いた場合でも、光学回路が開状態とな
り、開放状態を感知できる。Even if the door is slightly opened, the optical circuit will be in an open state and the open state can be detected.

さらにヒンジ４に発光受光ユニット５、光通過用孔１０
を設けることにより部品の共用化が可能となり、又、第
１、第２反射部材８，９とも近接し、光学回路が簡単に
構戒でき、外部からの防害光の影響を受け誤動作を生じ
ることが少ない。Further, the hinge 4 includes a light emitting/receiving unit 5 and a light passage hole 10.
The provision of the reflector makes it possible to share parts, and since the first and second reflective members 8 and 9 are also located close to each other, the optical circuit can be easily monitored, and malfunctions may occur due to the influence of external pollution light. There aren't many things.

このように本考案は閉或した複数のドアの間に、一面に
発光素子、他面に受光素子を有する発光、受光ユニット
を設け、前記各ドアには前記発光素子と受光素子の光学
回路を形或する各反射部材を設けたものであるから、一
対の発光，受光素子によって複数のドアの開扉が感知で
き、回路が簡単になるとともに製造コストも低減できる
。In this way, the present invention provides a light emitting and light receiving unit having a light emitting element on one side and a light receiving element on the other side between a plurality of closed doors, and each door has an optical circuit of the light emitting element and the light receiving element. Since each reflective member of a certain shape is provided, the opening of a plurality of doors can be sensed by a pair of light emitting and light receiving elements, and the circuit can be simplified and the manufacturing cost can be reduced.

また、ドア間に発光受光ユニットが設けられているので
、防害光の影響をうけることもない。Furthermore, since the light emitting/receiving unit is provided between the doors, it will not be affected by anti-pollution light.

なお、発光受光ユニットのドアのヒンジに形威した場合
には各反射部材に対する発光及び受光素子の位置精度が
高まり、正確な検知と組立簡単にできる利点がある。In addition, when the light-emitting and light-receiving unit is mounted on a door hinge, the positional accuracy of the light-emitting and light-receiving elements with respect to each reflecting member is increased, and there is an advantage that accurate detection and easy assembly are possible.

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

第１図は本考案一実施例の検知装置を有する冷蔵庫の斜
規図、第２図は第１図■■−Ｉ■′線の断面図、第３図
は同要部斜視図である。 ２・・・・・・冷凍室ドア、３・・・・・・冷蔵庫ドア
、５・・・・・・発光受光ユニット、６・・・・・・発
光素子、７・・・・・・受光素子、８，９・・・・・・
第１および第２反射部材。FIG. 1 is a perspective view of a refrigerator having a detection device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line 1--1 in FIG. 1, and FIG. 3 is a perspective view of the main parts thereof. 2... Freezer compartment door, 3... Refrigerator door, 5... Light emitting/receiving unit, 6... Light emitting element, 7... Light receiving Element, 8, 9...
First and second reflective members.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 冷凍室および冷蔵室等を閉或した各ドアの間に、一面に
発光素子、他面に受光素子を有する発光受光ユニットを
設け、前記各ドアに前記発光素子と受光素子の光学回路
を形成する各反射部材を設けてなる冷蔵庫等のドア開閉
検知装置。A light-emitting and light-receiving unit having a light-emitting element on one side and a light-receiving element on the other side is provided between each closed door of a freezer compartment, a refrigerator compartment, etc., and an optical circuit of the light-emitting element and the light-receiving element is formed in each door. A door opening/closing detection device for a refrigerator, etc., which is provided with various reflective members.