JP2015077253A - Lid opening/closing detection device for washing machine - Google Patents

Lid opening/closing detection device for washing machine Download PDF

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Publication number
JP2015077253A
JP2015077253A JP2013215963A JP2013215963A JP2015077253A JP 2015077253 A JP2015077253 A JP 2015077253A JP 2013215963 A JP2013215963 A JP 2013215963A JP 2013215963 A JP2013215963 A JP 2013215963A JP 2015077253 A JP2015077253 A JP 2015077253A
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lid
opening
magnet
washing machine
closing detection
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村上 進
Susumu Murakami
進 村上
重雄 梅谷
Shigeo Umetani
重雄 梅谷
聡一 畠中
Soichi Hatanaka
聡一 畠中
奈津美 菊池
Natsumi Kikuchi
奈津美 菊池
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a lid opening/closing detection device for a washing machine capable of detecting an open state of a lid even when an opening amount of the lid is small.SOLUTION: A lid opening/closing detection device for a washing machine includes: an opening 12 where laundry is put in/taken out; a lid 13 for opening/closing the opening 12; a magnet 30 disposed in the lid 13; and a magnetic sensor 28 for detecting a magnetic field 30b of the magnet 30 in the opening 12. The magnet 30 is movably fitted to the lid 13, and it is configured so as to face the magnetic sensor 28 when the lid 13 is closed, and moves within a movable range according to the opening movement of the lid 13. Thus, the magnetic field 30b of the magnet 30 moves as greatly as or more greatly than the size of the movement according to the opening movement of the lid 13 when the lid 13 is opened, and the magnetic field 30b changes greatly, so that even a slight opening of the lid 13 can be detected.

Description

本発明は洗濯機の衣類投入部を開閉する蓋の開閉状態を検知する洗濯機の蓋開閉検知装置に関するものである。   The present invention relates to a lid opening / closing detection apparatus for a washing machine that detects an open / closed state of a lid that opens and closes a clothing input portion of the washing machine.

従来、この種の洗濯機の蓋開閉検知装置は図4および図5に示すように構成されていた。図4は、従来の洗濯機の側面断面図であり、縦型洗濯機の一例を示す。外槽1は底部に攪拌翼2を回転自在に配置した洗濯兼脱水槽3を内包し、吊棒4により筐体5内に吊り下げられている。モータ6は、減速機構兼クラッチ7を介して、洗いステップ時には攪拌翼2を駆動し、脱水ステップ時には洗濯兼脱水槽3を駆動する。排水弁8は外槽1内の洗濯水を排水し、給水弁9は外槽1に水道水を給水する。洗濯兼脱水槽3は、上部に脱水時の振動を低減させるための流体バランサー10を有し、外槽1は、上部に内蓋11を有する。また、洗濯物の衣類が出し入れされる開口部12が筐体5の上面に設けられ、開口部12は中折れ式の蓋13を有している。制御装置26は、マイイクロコンピュータによって、モータ6、排水弁8、給水弁9などの動作を制御し、洗い、すすぎ、脱水の一連のステップを実行する。制御装置26は、筐体5の上面前部に設けられた操作パネル17内に、プリント基板29を有し、キースイッチ18や発光ダイオードなどの表示部19を備えている。   Conventionally, a lid opening / closing detection device of this type of washing machine has been configured as shown in FIGS. FIG. 4 is a side sectional view of a conventional washing machine and shows an example of a vertical washing machine. The outer tub 1 includes a washing / dehydrating tub 3 in which a stirring blade 2 is rotatably disposed at the bottom, and is hung in a housing 5 by a suspension bar 4. The motor 6 drives the agitation blade 2 via the speed reduction mechanism / clutch 7 during the washing step, and drives the washing / dehydration tank 3 during the dehydration step. The drain valve 8 drains the washing water in the outer tub 1, and the water supply valve 9 supplies tap water to the outer tub 1. The washing and dewatering tub 3 has a fluid balancer 10 for reducing vibration during dehydration at the top, and the outer tub 1 has an inner lid 11 at the top. In addition, an opening 12 through which clothes for laundry are put in and out is provided on the upper surface of the housing 5, and the opening 12 has a folding lid 13. The control device 26 controls the operation of the motor 6, the drain valve 8, the water supply valve 9 and the like by a micro computer, and executes a series of steps of washing, rinsing and dewatering. The control device 26 includes a printed circuit board 29 in an operation panel 17 provided on the front upper surface of the housing 5, and includes a display unit 19 such as a key switch 18 or a light emitting diode.

図5は、従来の洗濯機の制御装置近傍の断面図である。制御装置26は、蓋13が開放されたときに運転を自動的に一時停止するため、磁石25と磁気センサ28を利用した蓋開閉検知装置14を備えている。制御装置26は、プリント基板29にホールIC等の磁気センサ28を備え、開口部12の前部に配設されている。そして、蓋13の先端付近に磁石25が配設され、磁気センサ28と上下に対向する位置に取り付けられている。磁気センサ28は、樹脂でモールドされており、蓋13が閉じられると磁気を検知してハイ信号を出力し、蓋13が開かれて磁石25が離れるとロー信号を出力して出力信号を反転させる。制御装置26は、この磁気センサ28の信号により蓋13の開閉状態を判断する。   FIG. 5 is a cross-sectional view of the vicinity of a control device of a conventional washing machine. The control device 26 includes a lid opening / closing detection device 14 using a magnet 25 and a magnetic sensor 28 in order to automatically stop the operation when the lid 13 is opened. The control device 26 includes a magnetic sensor 28 such as a Hall IC on a printed circuit board 29 and is disposed in front of the opening 12. A magnet 25 is disposed in the vicinity of the tip of the lid 13 and is attached at a position facing the magnetic sensor 28 in the vertical direction. The magnetic sensor 28 is molded with resin. When the lid 13 is closed, the magnetic sensor 28 detects magnetism and outputs a high signal. When the lid 13 is opened and the magnet 25 is separated, a low signal is output and the output signal is inverted. Let The control device 26 determines the open / closed state of the lid 13 based on the signal from the magnetic sensor 28.

上記構成において、使用者は、開口部12の蓋13を開け、洗濯兼脱水槽3に洗濯物と洗剤を投入した後、蓋13を閉じて運転を開始する。制御装置26は、洗いステップとして、給水弁9を駆動して洗濯兼脱水槽3内に設定水位まで給水する。その後、モータ6を駆動して撹拌翼2を回転することにより、衣類に機械力を加えて汚れを落とす。次に、すすぎステップとして、洗濯兼脱水槽3内に設定水位まで給水し、モータ6を駆動して撹拌翼2を回転することにより衣類をすすぎ、その後、排水弁8を駆動して、洗濯兼脱水槽3内の水を排水する。次に、脱水ステップとして、モータ6を駆動し、洗濯兼脱水槽3を高速で回転して遠心力で洗濯物の脱水を行う。   In the above configuration, the user opens the lid 13 of the opening 12, puts laundry and detergent into the washing and dewatering tub 3, then closes the lid 13 and starts operation. As a washing step, the control device 26 drives the water supply valve 9 to supply water to the set water level in the washing and dewatering tub 3. Thereafter, the motor 6 is driven to rotate the stirring blade 2, thereby applying mechanical force to the clothes to remove dirt. Next, as a rinsing step, water is supplied to the set water level in the washing and dewatering tub 3, and the clothes are rinsed by driving the motor 6 and rotating the stirring blade 2, and then the drain valve 8 is driven to The water in the dehydration tank 3 is drained. Next, as a dehydration step, the motor 6 is driven, the washing and dewatering tub 3 is rotated at a high speed, and the laundry is dehydrated by centrifugal force.

このように洗濯兼脱水槽3が高速で回転しているとき、使用者が洗濯物の状態を見るなどのために蓋13を開けると、磁石25が磁気センサ28より離れるため、磁気センサ28の出力信号はローとなり、制御装置26は、蓋13が開けられたことを検知する。これにより、制御装置26はモータ6を停止し、減速機構兼クラッチ7に内蔵されているブレーキをかけて洗濯兼脱水槽3を停止させる。   Thus, when the washing and dewatering tub 3 is rotating at high speed, the magnet 25 is separated from the magnetic sensor 28 when the user opens the lid 13 to see the state of the laundry. The output signal goes low and the control device 26 detects that the lid 13 has been opened. Thereby, the control device 26 stops the motor 6 and applies the brake built in the speed reduction mechanism / clutch 7 to stop the washing / dehydration tub 3.

このように、蓋開閉検知装置14として、蓋13に設けられた磁石25と開口部12に設けられた磁気センサ28により磁気の変化を検知して蓋13の開閉を検知するようにしたので、それまでに開口部に設けられていたガラス管で構成されていたリードスイッチより取り扱いが容易になり、また、プリント基板29への実装も汎用自動機で行えるため、
安価に構成することができる。
As described above, as the lid opening / closing detection device 14, the magnet 25 provided on the lid 13 and the magnetic sensor 28 provided on the opening 12 detect the change in magnetism to detect the opening / closing of the lid 13. Since it is easier to handle than a reed switch that has been configured with a glass tube that has been provided in the opening until then, mounting to the printed circuit board 29 can also be performed with a general-purpose automatic machine,
It can be configured at low cost.

図6は、従来の洗濯機の他の蓋開閉検知装置近傍の断面図であり、従来の洗濯機に備えられた蓋開閉検知装置を本発明の構成に見立てた模式図である。開口部12に蓋13が設けられ、開口部12の前部に制御装置26が設けられている。磁気センサ28は、制御装置26のプリント基板29に取り付けられている。蓋13には磁石25が磁気センサ28と前後に対向するように配設され、磁石25は着磁方向が磁気センサ28に向く方向で固定されている。磁石25から出ている磁力線の向きを矢印25aで示し、磁気センサ28が磁力を検知することができる磁場の範囲を領域25bで示す。しかし、この構成は、磁石の磁力ばらつきや磁力センサの感度ばらつき、および製造上の組立てばらつきなどを含む。そこで、これらのばらつきを所定範囲で許容しても磁力センサが磁力を検知しやすいように、磁石の磁場の範囲が大きめになるように構成されていた。   FIG. 6 is a cross-sectional view of the vicinity of another lid opening / closing detection device of a conventional washing machine, and is a schematic diagram in which the lid opening / closing detection device provided in the conventional washing machine is regarded as the configuration of the present invention. A lid 13 is provided at the opening 12, and a control device 26 is provided at the front of the opening 12. The magnetic sensor 28 is attached to the printed circuit board 29 of the control device 26. A magnet 25 is disposed on the lid 13 so as to face the magnetic sensor 28 in the front-rear direction, and the magnet 25 is fixed in a direction in which the magnetization direction faces the magnetic sensor 28. The direction of the magnetic field lines coming out of the magnet 25 is indicated by an arrow 25a, and the range of the magnetic field in which the magnetic sensor 28 can detect the magnetic force is indicated by a region 25b. However, this configuration includes variations in the magnetic force of the magnet, variations in the sensitivity of the magnetic sensor, assembly variations in manufacturing, and the like. Accordingly, the magnetic field range of the magnet is configured to be large so that the magnetic force sensor can easily detect the magnetic force even if these variations are allowed within a predetermined range.

特開2002−346290号公報JP 2002-346290 A

しかしながら、このような従来の構成では、磁石の磁場の範囲が広いため、磁石が磁気センサから大きく離れないと磁気センサの出力が変化せず、制御装置は、蓋がある程度開けられてからしか蓋が開けられたことを検知できないという課題があった。また、蓋の内側に高速で回転する洗濯兼脱水槽を有する洗濯機としては、蓋が開けられたことをできるだけ早く検知して回転する洗濯兼脱水槽を停止させたいという要望がある。   However, in such a conventional configuration, since the magnetic field range of the magnet is wide, the output of the magnetic sensor does not change unless the magnet is greatly separated from the magnetic sensor, and the control device can only open the lid after the lid is opened to some extent. There was a problem that it was not possible to detect that was opened. Further, there is a demand for a washing machine having a washing and dewatering tub rotating at high speed inside the lid to stop the rotating washing and dehydrating tub by detecting that the lid has been opened as soon as possible.

本発明は、上記従来の課題を解決するもので、蓋がわずかに開いただけで蓋の開状態を検知することでき、より高い安全性を有する洗濯機の蓋開閉検知装置を提供することを目的とする。   The present invention solves the above-described conventional problems, and an object of the present invention is to provide a lid opening / closing detection device for a washing machine that can detect the open state of the lid only by slightly opening the lid and has higher safety. And

前記従来の課題を解決するために、本発明の洗濯機の蓋開閉検知装置は、洗濯物が出し入れされる開口部と、前記開口部を開閉する蓋と、前記蓋に配設された磁石と、前記開口部に前記磁石の磁場を検知する磁気センサとを備え、前記磁石は、可動自在に前記蓋に取り付けられるとともに、前記蓋が閉じているときに前記磁気センサに対向し、前記蓋が開く動きに伴って可動範囲で移動するように構成されている。   In order to solve the above-described conventional problems, a lid opening / closing detection device for a washing machine according to the present invention includes an opening through which laundry is put in and out, a lid that opens and closes the opening, and a magnet disposed on the lid. A magnetic sensor for detecting the magnetic field of the magnet in the opening, the magnet being movably attached to the lid, and facing the magnetic sensor when the lid is closed, It is comprised so that it may move in a movable range with the opening movement.

これにより、蓋の開く動きに伴って磁石が移動することで、蓋の開きがわずかでも磁石の磁場が大きく移動するため、磁石が蓋に固定されている場合より、蓋の開状態を早く検知することができる。   As a result, the magnet moves with the movement of the lid opening, and the magnetic field of the magnet moves greatly even if the lid opens slightly. Therefore, the open state of the lid is detected earlier than when the magnet is fixed to the lid. can do.

本発明の洗濯機の蓋開閉検知装置は、蓋の開き動作に合わせて磁石の磁場が大きく変わるため、蓋の開状態をより早く検知することができる。   The lid opening / closing detection device for a washing machine of the present invention can detect the lid open state more quickly because the magnetic field of the magnet changes greatly in accordance with the lid opening operation.

本発明の実施の形態1における洗濯機の側面断面図Side surface sectional drawing of the washing machine in Embodiment 1 of this invention 本実施の形態における洗濯機の蓋開閉検知装置近傍の断面図Sectional drawing of the lid opening / closing detection device vicinity of the washing machine in this Embodiment 本実施の形態における洗濯機の蓋開閉検知装置近傍の断面図Sectional drawing of the lid opening / closing detection device vicinity of the washing machine in this Embodiment 従来の洗濯機の側面断面図Side sectional view of a conventional washing machine 従来の洗濯機の蓋開閉検知装置近傍の断面図Sectional view of the vicinity of a lid opening / closing detection device of a conventional washing machine 従来の洗濯機の他の蓋開閉検知装置近傍の断面図Sectional drawing of the vicinity of another lid opening / closing detection device of a conventional washing machine

第1の発明の洗濯機の蓋開閉検知装置は、洗濯物が出し入れされる開口部と、前記開口部を開閉する蓋と、前記蓋に配設された磁石と、前記開口部に前記磁石の磁場を検知する磁気センサとを備え、前記磁石は、可動自在に前記蓋に取り付けられるとともに、前記蓋が閉じているときに前記磁気センサに対向し、前記蓋が開く動きに伴って可動範囲で移動するように構成されたものである。この構成により、蓋の開く動きに伴って磁石が移動することで、蓋の開きが少なくても磁石の磁場が大きく移動するため、わずかな蓋の開きによっても磁気センサに向かっていた磁場を大きく変化させることが可能となるため、蓋の開状態の検知をより早くすることができる。   A lid opening / closing detection device for a washing machine according to a first aspect of the present invention includes an opening through which laundry is put in and out, a lid that opens and closes the opening, a magnet disposed in the lid, and a magnet installed in the opening. A magnetic sensor for detecting a magnetic field, and the magnet is movably attached to the lid and faces the magnetic sensor when the lid is closed, and moves within a movable range as the lid opens. It is configured to move. With this configuration, the magnet moves with the movement of the lid opening, so that the magnetic field of the magnet moves greatly even if there is little opening of the lid. Since it becomes possible to change, detection of the open state of a lid can be made earlier.

第2の発明は、特に第1の発明において、前記磁石の磁場は、前記蓋が開かれるときに、前記蓋が開く動きに伴う移動の大きさ以上に大きく移動するものである。この構成により、磁気センサが磁場の包含からより早く外れ、蓋が開いたことをより早く検知することができる。   In a second aspect of the invention, particularly in the first aspect of the invention, when the lid is opened, the magnetic field of the magnet moves larger than the movement associated with the movement of the lid opening. With this configuration, it is possible to detect earlier that the magnetic sensor is removed from the inclusion of the magnetic field earlier and the lid is opened.

第3の発明は、特に第1または第2の発明において、前記磁石は、回転軸部を介して前記蓋に回転自在に取り付けられ、前記蓋が開く動きに伴って前記回転軸部を中心に回動するものである。この構成により、磁石が回転するためのスペースは小さくて済み、蓋の開き度合いに対する磁石の回転角度を大きくすることができる。   In a third aspect of the invention, particularly in the first or second aspect of the invention, the magnet is rotatably attached to the lid via a rotary shaft portion, and the rotary shaft portion is centered as the lid opens. It rotates. With this configuration, a space for rotating the magnet is small, and the rotation angle of the magnet with respect to the degree of opening of the lid can be increased.

第4の発明は、特に第3の発明において、前記磁石は、前記蓋が開いている時に、所定の位置に移動せしめられる付勢部を有し、前記開口部は、前記蓋が閉じている時に、前記磁石が前記付勢部の付勢力に対抗して前記磁気センサに対向するよう向きを規制する当接部を有するものである。この構成により、簡単な構成で磁石を回転させ、所定の向きまたは位置に規制することができる。   In a fourth aspect of the invention, particularly in the third aspect of the invention, the magnet has a biasing portion that is moved to a predetermined position when the lid is open, and the opening is closed by the lid. Sometimes, the magnet has an abutting portion that restricts the direction so as to oppose the urging force of the urging portion so as to face the magnetic sensor. With this configuration, the magnet can be rotated with a simple configuration and can be regulated to a predetermined direction or position.

第5の発明は、前記付勢部が、重力の作用を利用するように重心位置を構成されたものである。この構成により、付勢部として弾性部材等の追加部材を必要とせず、簡単な構成とすることができる。   According to a fifth aspect of the invention, the urging portion is configured to have a center of gravity position so as to utilize the action of gravity. With this configuration, an additional member such as an elastic member is not required as the urging portion, and a simple configuration can be achieved.

第6の発明は、前記付勢部が弾性部材で構成されたものである。この構成により、磁石の回転方向を任意の方向に設定することができ、蓋開閉検知装置の配設位置の自由度が向上する。   In a sixth aspect of the invention, the urging portion is constituted by an elastic member. With this configuration, the rotation direction of the magnet can be set to an arbitrary direction, and the degree of freedom of the arrangement position of the lid opening / closing detection device is improved.

以下、本発明の実施の形態について、図面を参照しながら説明する。また、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Further, the present invention is not limited by this embodiment.

(実施の形態1)
図1は、本発明の実施の形態1における洗濯機の側面断面図である。図2は、本実施の形態における洗濯機の蓋開閉検知装置近傍の断面図で、蓋が閉じた状態を示す。図3は、本実施の形態における洗濯機の蓋開閉検知装置近傍の断面図で、蓋がわずかに開いた状態を示す。なお、洗濯機としての機能は従来例と同様であり、従来例と同じ構成のものは同一符号を付して説明を省略する。
(Embodiment 1)
FIG. 1 is a side sectional view of a washing machine according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the vicinity of the lid opening / closing detection device of the washing machine according to the present embodiment, showing a state where the lid is closed. FIG. 3 is a cross-sectional view of the vicinity of the lid opening / closing detection device of the washing machine in the present embodiment, showing a state where the lid is slightly opened. In addition, the function as a washing machine is the same as that of a prior art example, and the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description.

図1において、開口部12に蓋13が設けられ、開口部12の前部に制御装置26が設けられている。制御装置26は、蓋13が開放されたときに運転を自動的に一時停止するため、磁石30を利用した蓋開閉検知装置34を備えている。制御装置26は、プリント基板29にホールIC等の磁気センサ28を備えている。そして、蓋13の先端付近に磁
石30が配設され、磁気センサ28と前後に対向する位置に取り付けられている。磁気センサ28は、樹脂でモールドされており、蓋13が閉じられると磁気を検知してハイ信号を出力し、蓋13が開かれて磁石30が離れるとロー信号を出力する。このように、磁気センサ28は磁場の強さがある値以上になると出力が反転するように構成されている。そして、制御装置26は、この磁気センサ28の信号により蓋13が開いているか閉じているかを判別する。
In FIG. 1, a lid 13 is provided at the opening 12, and a control device 26 is provided at the front of the opening 12. The control device 26 includes a lid opening / closing detection device 34 using a magnet 30 in order to automatically stop the operation when the lid 13 is opened. The control device 26 includes a magnetic sensor 28 such as a Hall IC on a printed circuit board 29. A magnet 30 is disposed in the vicinity of the tip of the lid 13 and is attached at a position facing the magnetic sensor 28 in the front-rear direction. The magnetic sensor 28 is molded with resin, detects a magnetism when the lid 13 is closed, and outputs a high signal, and outputs a low signal when the lid 13 is opened and the magnet 30 is separated. Thus, the magnetic sensor 28 is configured so that the output is reversed when the strength of the magnetic field exceeds a certain value. The control device 26 determines whether the lid 13 is open or closed based on the signal from the magnetic sensor 28.

図2および図3において、磁石30は回転軸部31を介して蓋13に取り付けられ、蓋13が開く動きに伴って回転軸部31を中心に所定の可動範囲で回動する。磁石30は磁気センサ28に磁力線30aが向かうように着磁されており、並行磁界よりも遠方に磁力線を放出することができる。磁石30は、磁石30の重心が回転軸部31の中心から磁気センサ28と反対側の付勢部30cに位置するようにして重力の作用を利用するように構成されており、蓋13が開く動きに伴って回転軸部31を中心に回動する。   2 and 3, the magnet 30 is attached to the lid 13 via the rotary shaft portion 31, and rotates within a predetermined movable range around the rotary shaft portion 31 as the lid 13 opens. The magnet 30 is magnetized so that the magnetic lines of force 30a are directed toward the magnetic sensor 28, and can emit magnetic lines of force farther than the parallel magnetic field. The magnet 30 is configured to utilize the action of gravity so that the center of gravity of the magnet 30 is positioned at the biasing portion 30c opposite to the magnetic sensor 28 from the center of the rotating shaft portion 31, and the lid 13 is opened. It rotates around the rotating shaft 31 with the movement.

図2に示すように、蓋13が閉じている状態では、開口部12に設けられた当接部32により、磁石30は磁気センサ28に対向するよう向きを規制される。また、図3に示すように、磁石30は、蓋13が開かれると重心の位置による重力の作用により蓋13の開き方向に回転し、蓋13が所定の開き量まで開かれると係止部33に当接して停止する。このとき、磁石30は蓋13の回転に加えて同じ方向にさらに回転する。このため、磁場30bは、蓋13が開く動きに伴う移動の大きさ以上に大きく回転方向に移動する。   As shown in FIG. 2, when the lid 13 is closed, the direction of the magnet 30 is regulated so as to face the magnetic sensor 28 by the contact portion 32 provided in the opening 12. As shown in FIG. 3, when the lid 13 is opened, the magnet 30 rotates in the opening direction of the lid 13 due to the action of gravity due to the position of the center of gravity, and when the lid 13 is opened to a predetermined opening amount, It abuts on 33 and stops. At this time, the magnet 30 further rotates in the same direction in addition to the rotation of the lid 13. For this reason, the magnetic field 30b moves in the direction of rotation larger than the magnitude of the movement accompanying the movement of the lid 13 opening.

以上のように構成された蓋開閉検知装置34について、その動作、作用を説明する。図2に示すような蓋13が閉じている状態では、磁石30は当接部32に押されて磁気センサ28に磁力線30aが向く。これにより、磁場30bの中に磁気センサ28が包含され、磁気センサ28は磁気を検知して蓋13が閉じている状態のハイ信号を出力する。   About the lid | cover opening / closing detection apparatus 34 comprised as mentioned above, the operation | movement and an effect | action are demonstrated. In the state where the lid 13 is closed as shown in FIG. 2, the magnet 30 is pushed by the contact portion 32, and the magnetic force line 30 a faces the magnetic sensor 28. Thereby, the magnetic sensor 28 is included in the magnetic field 30b, and the magnetic sensor 28 detects magnetism and outputs a high signal in a state where the lid 13 is closed.

また、図3に示すような蓋13がわずかに開いている状態では、磁石30は当接部32に規制されながら蓋13の開き量に応じて回転する。そのため、磁力線30aの方向が図3に示すように上方を向く。このとき、磁力線30aの方向は、蓋13の開き角度だけでなく、磁石30が回転した角度だけ余計に上方を向く。すなわち、磁力線30aに合わせて磁場30bも大きく移動する。これにより、磁気センサ28は磁場30bの包含から容易に外れ、蓋13が開いた状態のロー信号を出力する。従来例の図6と図2の蓋13の開き量hは同じ蓋13の開き度合いを示すが、磁石30が回転する構成にした本実施の形態の場合は磁気センサ28が磁場30bの包含からより早く外れ、蓋13が開いたことをより早く検知することができる。   In the state where the lid 13 is slightly opened as shown in FIG. 3, the magnet 30 rotates according to the opening amount of the lid 13 while being restricted by the contact portion 32. Therefore, the direction of the magnetic force line 30a faces upward as shown in FIG. At this time, the direction of the line of magnetic force 30a is directed upward not only by the opening angle of the lid 13 but also by the angle at which the magnet 30 is rotated. That is, the magnetic field 30b moves greatly in accordance with the magnetic lines of force 30a. Thereby, the magnetic sensor 28 is easily removed from the inclusion of the magnetic field 30b, and outputs a low signal in a state where the lid 13 is opened. The opening amount h of the lid 13 in FIGS. 6 and 2 of the conventional example shows the same degree of opening of the lid 13, but in the case of the present embodiment in which the magnet 30 rotates, the magnetic sensor 28 is included from the inclusion of the magnetic field 30b. It is possible to detect earlier that the lid 13 is removed earlier and the lid 13 is opened.

特に、本実施の形態のように磁石30が回転軸部31を介して取り付けられれば、磁石30が回転するためのスペースは小さくて済み、蓋13の開き度合いに対する磁石30の回転角度を大きくすることができる。また、磁石30は、蓋13が開いている時に、所定の位置に移動せしめられる重力などの付勢部30cを有し、開口部12は、蓋13が閉じている時に、磁石30が付勢部30cの付勢力に対抗して磁気センサ28に対向するよう向きを規制する当接部32を有する構成とすれば、簡単な構成で磁石30を回転させ、所定の向きまたは位置に規制することができる。   In particular, if the magnet 30 is attached via the rotary shaft portion 31 as in the present embodiment, the space for rotating the magnet 30 is small, and the rotation angle of the magnet 30 with respect to the degree of opening of the lid 13 is increased. be able to. Further, the magnet 30 has a biasing portion 30c such as gravity that is moved to a predetermined position when the lid 13 is open, and the opening 12 is biased by the magnet 30 when the lid 13 is closed. If the configuration has the contact portion 32 that restricts the direction to oppose the magnetic sensor 28 against the urging force of the portion 30c, the magnet 30 is rotated with a simple configuration and restricted to a predetermined direction or position. Can do.

以上のように、本発明の蓋開閉検知装置によれば、蓋に設けられた磁石が蓋の開く動きに伴って移動することで磁石の磁場が大きく変わるため、わずかな蓋の開きを検知することができ、より安全性を向上することができる。   As described above, according to the lid opening / closing detection device of the present invention, the magnet provided on the lid moves with the movement of the lid opening, so that the magnetic field of the magnet changes greatly. It is possible to improve safety.

なお、本実施の形態において、磁石30は、蓋13に取り付けられている回転軸部31を中心にその場で回転するだけの移動としたが、摺動するような構成として磁石30全体
が可動範囲で移動するようにしてもよい。要するに、磁場30bが、蓋13が開く動きに伴う移動の大きさ以上に大きく移動する構成とすればよい。
In the present embodiment, the magnet 30 is only moved on the spot around the rotating shaft portion 31 attached to the lid 13, but the entire magnet 30 is movable as a sliding configuration. You may make it move within a range. In short, the magnetic field 30b may be configured to move larger than the movement associated with the movement of the lid 13 opening.

また、磁石30を回転させる付勢部30cとしての付勢力は重力に限るものではなく、バネなどの弾性部材によるものでもよい。磁石30の重心を利用するのは、付勢部30cとして弾性部材等の追加部材を必要とせず、簡単な構成とすることができる。しかし、弾性部材によれば、重力のように磁石30の上下方向の回転だけに規制されることなく任意の方向に設定することができ、蓋開閉検知装置34の配設位置の自由度が向上する。さらに、当接部32は磁石30側に設けられてもよい。   Further, the urging force as the urging portion 30c for rotating the magnet 30 is not limited to gravity, and may be due to an elastic member such as a spring. Utilizing the center of gravity of the magnet 30 does not require an additional member such as an elastic member as the urging portion 30c, and can have a simple configuration. However, according to the elastic member, it can be set in any direction without being restricted only by the vertical rotation of the magnet 30 as in gravity, and the degree of freedom of the arrangement position of the lid opening / closing detection device 34 is improved. To do. Further, the contact portion 32 may be provided on the magnet 30 side.

以上のように、本発明にかかる洗濯機の蓋開閉検知装置は、磁気センサを用い、蓋に設けられた磁石を蓋の開きに伴って回転させることにより、わずかな蓋の開きを検知することができるので、ドラム式の洗濯機や乾燥機等の蓋の開閉検知のみならず、磁気センサを用いてわずかな動きを検知したい場合の検知装置の構成として有用である。   As described above, the lid opening / closing detection device for a washing machine according to the present invention uses a magnetic sensor to detect a slight lid opening by rotating a magnet provided on the lid as the lid opens. Therefore, it is useful not only for detection of opening / closing of a lid of a drum-type washing machine or dryer, but also as a configuration of a detection device for detecting a slight movement using a magnetic sensor.

12 開口部
13 蓋
28 磁気センサ
30 磁石
30a 磁力線
30b 磁場
30c 付勢部
31 回転軸部
32 当接部
33 係止部
34 蓋開閉検知装置
DESCRIPTION OF SYMBOLS 12 Opening part 13 Lid 28 Magnetic sensor 30 Magnet 30a Magnetic field line 30b Magnetic field 30c Energizing part 31 Rotating shaft part 32 Contact part 33 Locking part 34 Lid opening / closing detection apparatus

Claims (6)

洗濯物が出し入れされる開口部と、前記開口部を開閉する蓋と、前記蓋に配設された磁石と、前記開口部に前記磁石の磁場を検知する磁気センサとを備え、前記磁石は、前記蓋に可動自在に取り付けられるとともに、前記蓋が閉じているときに前記磁気センサに対向し、前記蓋が開く動きに伴って可動範囲で移動するように構成された洗濯機の蓋開閉検知装置。 An opening through which the laundry is put in and out; a lid that opens and closes the opening; a magnet disposed in the lid; and a magnetic sensor that detects a magnetic field of the magnet in the opening; A lid opening / closing detection device for a washing machine, which is movably attached to the lid, is opposed to the magnetic sensor when the lid is closed, and moves within a movable range as the lid opens. . 前記磁石の磁場は、前記蓋が開かれるときに、前記蓋が開く動きに伴う移動の大きさ以上に大きく移動する請求項1記載の洗濯機の蓋開閉検知装置。 2. The lid opening / closing detection apparatus for a washing machine according to claim 1, wherein the magnetic field of the magnet moves larger than the magnitude of movement accompanying the movement of the lid opening when the lid is opened. 前記磁石は、回転軸部を介して前記蓋に回転自在に取り付けられ、前記蓋が開く動きに伴って前記回転軸部を中心に回動する請求項1または2記載の洗濯機の蓋開閉検知装置。 The lid opening / closing detection of the washing machine according to claim 1 or 2, wherein the magnet is rotatably attached to the lid via a rotating shaft portion, and rotates around the rotating shaft portion as the lid opens. apparatus. 前記磁石は、前記蓋が開いている時に、所定の位置に移動せしめられる付勢部を有し、前記開口部は、前記蓋が閉じている時に、前記磁石が前記付勢部の付勢力に対抗して前記磁気センサに対向するよう向きを規制する当接部を有する請求項3記載の洗濯機の蓋開閉検知装置。 The magnet has an urging portion that is moved to a predetermined position when the lid is open, and the opening portion has an urging force applied to the urging portion when the lid is closed. The lid opening / closing detection device for a washing machine according to claim 3, further comprising a contact portion that restricts a direction to oppose the magnetic sensor. 前記付勢部が、重力の作用を利用するように重心位置を構成された請求項4記載の洗濯機の蓋開閉検知装置。 The lid opening / closing detection device for a washing machine according to claim 4, wherein the biasing portion is configured to have a center of gravity position so as to use an action of gravity. 前記付勢部が弾性部材で構成された請求項4記載の洗濯機の蓋開閉検知装置。 The lid opening / closing detection device for a washing machine according to claim 4, wherein the biasing portion is formed of an elastic member.
JP2013215963A 2013-10-17 2013-10-17 Lid opening/closing detection device for washing machine Pending JP2015077253A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106521869A (en) * 2015-09-14 2017-03-22 松下家电研究开发(杭州)有限公司 Method for detecting opening and closure of cover of clothing processing device, and clothing processing device
CN109706694A (en) * 2017-10-25 2019-05-03 青岛海尔洗衣机有限公司 Top-opening type clothes treatment device and its inside drum cover detection components

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106521869A (en) * 2015-09-14 2017-03-22 松下家电研究开发(杭州)有限公司 Method for detecting opening and closure of cover of clothing processing device, and clothing processing device
CN106521869B (en) * 2015-09-14 2019-01-11 松下家电研究开发(杭州)有限公司 The cover opening and closing inspection method and its clothes treatment device of clothes treatment device
CN109706694A (en) * 2017-10-25 2019-05-03 青岛海尔洗衣机有限公司 Top-opening type clothes treatment device and its inside drum cover detection components
CN109706694B (en) * 2017-10-25 2021-08-24 青岛胶南海尔洗衣机有限公司 Top-opening clothes treatment equipment and inner cylinder cover detection assembly thereof

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