JP2004341991A - Raw material sold-out detection device - Google Patents

Raw material sold-out detection device Download PDF

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Publication number
JP2004341991A
JP2004341991A JP2003140173A JP2003140173A JP2004341991A JP 2004341991 A JP2004341991 A JP 2004341991A JP 2003140173 A JP2003140173 A JP 2003140173A JP 2003140173 A JP2003140173 A JP 2003140173A JP 2004341991 A JP2004341991 A JP 2004341991A
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Japan
Prior art keywords
raw material
sold
container
detecting
detecting means
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JP2003140173A
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Japanese (ja)
Inventor
Masataka Oda
雅隆 小田
Takashi Higashida
隆司 東田
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2003140173A priority Critical patent/JP2004341991A/en
Publication of JP2004341991A publication Critical patent/JP2004341991A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem, related to a raw material sold-out device in a beverage vending machine which produces and sells coffee and the like, that the sold-out detection accuracy is reduced by erroneous sales caused by detecting only the presence/ absence of a raw material in a container, although in the state of an uneven raw material accumulation, or by deposition of the raw material onto a surface adhering to a sold-out sensor, caused by humidity or the like, in the raw material container which is frequently attached/ detached. <P>SOLUTION: The device comprises a raw material flow detection means 33 for detecting the flow state due to delivery of a raw material into a row material container 21, and a sold-out detection means 38 for detecting the presence/absence of the raw material by an action of the raw material flow detection means 33, which is provided outside the raw material container. Thus, it is made possible to indirectly detect the behavior of the raw material itself and stably detect the sold-out irrespective of the state of the raw material accumulated and the deposition of the raw material in the container. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明はコーヒー等を製造して販売する飲料自動販売機の原料売切れ検出装置に関する。
【0002】
【従来の技術】
飲料自動販売機としてコーヒー自動販売機を例に取ると、この自動販売機は、コーヒー等の原料を収納する原料容器、湯タンク、そして砂糖や粉末ミルクなど添加物の収納容器を備え、販売指令にて適当量のコーヒー原料、添加物原料、そして湯とが飲料製造部に送られてコーヒーが販売されるものとなっている。
【0003】
ここで、コーヒーや砂糖などの原料の貯蔵量を知り、売切れ処理及び原料の補充時期などに適切に対応するために、原料売切れ検出装置が必要となる。
【0004】
従来の原料売切れ検出装置としては、原料容器に静電式容量式の売切れセンサーを密着させたもの(例えば、特許文献1参照)がある。
【0005】
以下図面を参照しながら上記従来の原料売切れ検出装置を説明する。
【0006】
図5は、従来の原料売切れ検出装置の断面図である。 図5に示すように、従来の原料売切れ検出装置は、原料容器1とその外側に原料容器1に密着するように配置された静電容量式の売切れセンサー15と、樹脂などの部材よりなるセンサーケース16と、売切れセンサー15を配置するためにセンサーケース16に開けられた窓口17と、売切れセンサー15を常に原料容器1の側壁1aに押し当てるためのスプリング18と、その押し当て板19とから構成されている。
以上のように構成された原料売切れ装置について、以下その動作を説明する。
【0007】
まず、原料売切れ装置においては、容器1内の粉末原料Pが位置レベル的に実線状態図に示すように売切センサー15を凌ぐほどに十分にある場合には原料有とし、一点鎖線状態のように位置レベルが下がり、空間域が売切れセンサー15に対応するようになると売切れととなる。その際、静電容量の変化を売切れセンサーで検知することで原料の有無を判別し、売切れ表示ランプなどを点灯するなりして、その補充時期を報せる。
【0008】
【特許文献1】
特開平5−307671号公報
【0009】
【発明が解決しようとする課題】
しかしながら、上記従来の構成では、売切れセンサー15は常に押し当て密着させる必要があり、頻繁な脱着を伴う原料容器にあっては湿気等による密着面への原料付着等の要因もあり、検出の安定性に欠き、売切れの検出精度に影響を及ぼしてしまうという問題点を有している。
【0010】
本発明は従来の課題を解決するもので、脱着によっても売切れの検出精度に影響を及ぼさず原料の売切れ判別を的確かつ容易に検出できる原料売切れ検出装置を提供することを目的とする。
【0011】
さらに、上記従来の構成は、前後方向に挿入脱着する原料容器にあって常に密着させて取り付ける構造上、取り付け位置およびスプリング18付勢方向が制約され、売切れ検出後の売残しが多く販売ロスが増えるなどの問題点を有している。
【0012】
本発明の他の目的は、構造上の制約が少なく、売切れ検出時の売残しが少なく販売ロスの少ない原料売切れ検出装置を提供することを目的とする。
【0013】
さらに、上記従来の構成では、販売消費に伴う原料容器内における原料充填レベルの変化が一様でなく、一時的に偏よった原料堆積状態の発生や固着やブリッジの発生といった場合には原料が供給されないにもかかわらず、原料の容器内での有無のみの検出しか行わないため、販売動作が行われて品質の低い飲料が提供されるといった問題点を有している。
【0014】
本発明は従来の課題を解決するもので、事実上供給可能な原料を直接検出することで、原料容器内に存在しながらもブリッジ等により供給し得ない原料がある場合においても誤販売してしまうことなく常に品質の安定した飲料販売を行うことができる原料売切れ検出装置を提供することを目的とする。
【0015】
【課題を解決するための手段】
本発明の請求項1に記載の発明は、原料容器内にあって原料の払い出しに伴う流動状態を検出する原料流動検出手段と原料容器外にあって原料流動検出手段の動作により原料の有無を検出する売切れ検知手段を設けたものであり、原料容器内における原料の単なる存在有無はもとより、実際に販売に供される有効原料の有無を直接検出するべく、払い出しに伴う原料容器内における原料自体の挙動を直接的に検出しうる作用を有している。
【0016】
請求項2に記載の発明は、売切れ検知手段が磁気もしくは光を検出対象とする非接触検知手段で構成したものであり、寸法構成上の制約を受けにくく、密着度等の接触状況によらず高い検出精度で安定して検出しうる作用を有する。
【0017】
請求項3に記載の発明は、原料流動検出手段による動作を原料容器外の売切れ検知手段に伝達する検出伝達手段を設けたものであり、原料容器内における原料自体の挙動を外部に設けられた売切れ検知手段のより近い位置にまで伝達することで検出に対する安定性、確実性を向上させる作用を有する。
【0018】
【発明の実施の形態】
以下、本発明による自動販売機の原料売切れ検出装置の実施の形態について、図面を参照しながら説明する。なお、従来と同一構成については、同一符号を付して詳細な説明を省略する。
【0019】
(実施の形態1)
図1は、本発明の実施の形態1による自動販売機の原料売切れ検出装置の断面図である。図2は、同実施の形態による原料売切れ装置の売切れ状態の断面図であり。図3は同実施の形態による原料売切れ装置の販売可能状態の断面図である。
【0020】
図1、図2、図3において、原料容器21はパウダー原料およびビーンズ原料等を収納する容器で、原料容器21の下部には原料固着防止のためのアジテータホイール22およびアジテータホイール22に連動して動作するアジテータプレート23が設けられている。
【0021】
原料の送出用スクリュー24は、販売指令ごとに回転して送出口25より原料を取り出す。減速機構付27きのモータ26は送出用スクリュー24を回転駆動させるものである。
【0022】
支持台28は原料容器21を載置支持するもので、支持台28の先端には原料容器21を動かなく固定するためのロック金具29が止着されている。一方、原料容器21の底壁21bの前方位置には、このロック金具29に挿入されて原料容器21を支持台28にセットするための爪部30が形成されており、さらに原料容器21の後方位置にも正しくセットするための勘合穴(図示しない)が支持台28に配設された挿着時の案内ポスト(図示しない)に対応した位置に設けられている。
【0023】
よって、ロック金具29と爪部30とを一直線的に位置合せして、原料容器21の底面を支持台28の面上に載せるよう押し進めると、ロック金具29が爪部30と、案内ポストが勘合穴とそれぞれ係合し始め、完全に係合するとロック金具29の弾性係止部29aによって爪部30はロック保持されるとともに原料容器21自体がモータ26出力と原料の排出抵抗とにより発生する旋回力を受けないよう支持台28に固定される。この時、送出用スクリュー24後端のジョイント31は減速機構27の軸先端に設けた駆動ピン32と嵌合連結する。
【0024】
次に、原料容器21内下部の反送出口25側には原料流動検出手段33が設置されており、この原料流動検出手段33は、原料容器21の両壁面を貫通する軸34と、軸34に回動自在に軸支された原料流動検知プレート35、および原料流動検知プレート35の一端に固着係支された永久磁石で形成されたマグネット36により主に構成されている。ここで、原料流動検知プレート35の反マグネット36側先端部は、売り切れ検出残量を最小限に留めるために送出用スクリュー24の反送出口25側近傍にまで延伸して構成されている。
【0025】
さらに、原料流動検知プレート35の上方には軸34を夾んでマグネット36取り付け側の上部を覆うようにカバー37が配設されており、原料が存在しないかもしくは売切れ状態の時には軸34を中心としてマグネット36取り付け側が重量バランス的に重くなるように原料流動検知プレート35の重心位置が予め設定されている。
【0026】
次に、支持台28にあって、原料容器21が支持台28に装着された際に、原料流動検知プレート35のマグネット36が対向近接する位置には売切れ検知手段38が設けられている。この売切れ検知手段38は、たとえばリードスイッチあるいはホール素子等の磁界の強度に反応して動作検出するセンサーによって構成されている。
【0027】
したがって、マグネット36および売切れ検知手段38の近傍にて構成されるすべての部材については、磁気の影響を受けない樹脂材料もしくは非磁性金属材料により構成されている。
【0028】
以上のように構成された原料売切れ検出装置について、以下その動作を説明する。
【0029】
本発明では、売切れの検出として、リードスイッチもしくはホール素子等の売切れ検知手段38を用い、売切れ検知手段38を原料容器21の外側に近接させて配置した構成の実施の形態について述べる。
【0030】
売切れ検知は、販売による原料供給に伴う原料の流動状態の有無、つまり原料による原料流動検知プレート35の回動抵抗の有無によってマグネット36が売切れ検知手段38と近接または乖離によってもたらされる磁気強度の変化を検出することにより行なう。この磁界強度の差によりリードスイッチの接点開閉あるいは図示しない検知回路、判別回路などにて原料の有無を判別し、売切れ表示ランプなどを点灯するなりして、その補充時期を報せる。
【0031】
一般的に、原料容器21内の原料の流動については、送出用スクリュー24の後端側を起点に行われる。すなわち、送出用スクリュー24のピッチ空間に落ち込んだ原料の大部分がそのまま送出口25側に送り出されていくことになるため、送出用スクリュー24のピッチ空間が事実上空の状態で始まる送出用スクリュー24の最後端部を起点として、原料の落下供給による流動が始まる。そのため、原料容器21内の原料は送出用スクリュー24後端部側から減っていくことになる。
【0032】
図2に示すように、売切れ状態では原料流動検知プレート35は原料との接触干渉がないため、その重量バランスによりマグネット36側が軸34を中心として売切検知手段38に最も近接する側に傾倒しており、近接した高磁界により売切れ信号ONの状態にある。
【0033】
次に、図3に示すように、売切れ状態から原料を原料容器21内に補充され販売可能となる場合について述べる。この際、比重が大きい原料の場合やコーヒー豆等の固形粒状原料の場合には上部からの投入により原料流動検知プレート35への直接の衝突や原料堆積時の圧力により、原料流動検知プレート35の重量バランスがくずれて売切れ検知手段38から乖離する方向に回動しようとする。これにより、売切れ検知手段38の磁気検知感度を下回る位置まで回動乖離した場合には、近接信号OFF状態となり売切れ状態から解除復帰される。
【0034】
一方、原料が微粉末状であったり嵩比重が小さかったりした場合には、上部からの投入においても拡散状態で飛散落下することから、原料流動検知プレート35への直接の衝突や原料堆積時の圧力も得られない場合がある。
【0035】
この場合、売り切れ状態からの解除復帰は、その後の原料供給に伴ってもたらされる。
【0036】
つまり、原料容器21内の流動は、まず送出用スクリュー24の後端部において積極的に行われるため、送出用スクリュー24の後端部上方に設置された原料流動検知プレート35近傍では原料が落下する方向へと流動が進む。
【0037】
このとき、原料流動検知プレート35はこの落下方向とは交錯する角度に傾倒しているために、原料流動検知プレート35の下方において発生した落下流動によって原料流動検知プレート35下部は粗密度状態となる。そのため、原料流動検知プレート35は、圧力バランスを平衡維持するように働き、結果的に原料の流れに沿う下向き方向へと回動することとなる。
【0038】
したがって、原料の供給につれてマグネット36側が軸34を中心として売切れ検知手段38から乖離する側に徐々に傾倒していき、売切れ検知手段38の磁気検知感度を下回る位置まで回動乖離した場合に、近接信号OFF状態となりここで初めて売切れ状態から解除復帰される。
【0039】
これらの場合については、原料補充後もしばらく売切れ状態が継続することになるため、売切れ時の原料補充後は予め設定された原料供給動作時期(杯数)まで売切れの入力信号を制限して販売を行うように図示しない制御回路によりコントロールされている。
【0040】
次に、原料が消費されて充填量の堆積レベルが原料流動検知プレート35の下方先端部近傍レベル以下にまで到達した時、原料が原料流動検知プレート35下端部に接触して傾斜角度を維持しようとする力に対して、原料流動検知プレート35自体の重量バランスによる復元力が上回った場合、原料流動検知プレート35は、軸34を中心としてマグネット36側が売切れ検知手段38に最も近接する所定位置にまで一気に回旋して、近接状態となり売切れ信号ONの状態になる。
【0041】
以上のように本実施の形態の原料売切れ検出装置は、原料容器21内にあって原料の払い出しにともなう流動状態を検出する原料流動検出手段33と原料容器21外にあって原料流動検出手段33の動作により原料の有無を検出する売切れ検知手段38を設けたことにより、間接的に原料の有無を検出でき、原料容器21内における微粉の付着やよごれ、および原料容器21の着色や変色、並びに検出する原料自体の色差、比重等に依らずに安定して売切れを検出することができるとともに、事実上供給可能な原料を直接検出することになるため、原料容器21内に存在しながらも、ブリッジ等により供給し得ない原料がある場合においても、誤販売してしまうことなく常に品質の安定した飲料販売を行うことができる。
【0042】
また、原料容器21内には配線を必要とするような機能部品が無く、また売切れ検知手段38と原料容器21とは分離してそれぞれ別体物とできるので、原料容器21をそのまま清掃できてメンテナンス性が良いものとなる。
【0043】
さらに、売切れ検知手段38と原料容器21とは密着させる必要がなく、脱着に伴う装着位置ズレ等に起因する検出信頼性を損なうことなく、構造上簡便で安価なものとすることができる。
【0044】
なお、説明では原料容器21内に貯蔵する原料はコーヒーの粉末原料として説明したが、コーヒーの豆原料および砂糖や粉末ミルクなどを入れた原料容器21に本発明の原料売切れ検知装置を利用できることは言う迄もない。
【0045】
(実施の形態2)
図4は、本発明の実施の形態2による原料売切れ検出装置の要部断面図である。図4において、原料容器21はパウダー原料およびビーンズ原料等を収納するもので、売切れ検知装置は、原料容器21の両壁面を貫通する軸34に、回転自在に軸支された原料流動検知プレート35およびその検出伝達手段39からなる。
【0046】
以上のように構成された原料売切れ検出装置について、以下その動作を説明する。
【0047】
本発明では、原料の有無に伴う原料流動によって原料流動プレート35が回転し、それと連動して検出伝達手段39が回転する。検出伝達手段の原料容器21外側にはマグネットが取り付けられており、これとリードスイッチが接触、非接触を行うことりより、原料の有無を判別し売切れ表示ランプなどを点灯するなりして、その補充時期を報せる。
【0048】
以上のように本実施の形態の原料売切れ検出装置は、実施の形態1と同様に、原料容器21内にあって原料の払い出しにともなう流動状態を検出する原料流動検出手段35と原料容器21外にあって原料流動検出手段35の動作により原料の有無を検出する売切れ検知手段38を設けたことにより、間接的に原料の有無を検出でき、原料容器21内における微粉の付着やよごれ、および原料容器21の着色や変色、並びに検出する原料自体の色差、比重等に依らずに安定して売切れを検出することができるとともに、事実上供給可能な原料を直接検出することになるため、原料容器21内に存在しながらも、ブリッジ等により供給し得ない原料がある場合においても、誤販売してしまうことなく常に品質の安定した飲料販売を行うことができる。
【0049】
また、原料容器21内には配線を必要とするような機能部品が無く、また売切れ検知手段38と原料容器21とは分離してそれぞれ別体物とできるので、原料容器21をそのまま清掃できてメンテナンス性が良いものとなる。
【0050】
また、売切れ検知手段38と原料容器21とは密着させる必要がなく、脱着に伴う装着位置ズレ等に起因する検出信頼性を損なうことなく、構造上簡便で安価なものとすることができる。
【0051】
さらに、上記説明ではリードスイッチを用いた場合であったが、原料流動検知プレート35の動作に連動させて磁界を遮断と復帰させる構成もしくは磁性体を近接させることで磁界の誘引による磁束密度分布の変化を検地する構成としても本発明と同様の効果が得られることはいう迄もない。
【0052】
【発明の効果】
以上説明したように請求項1に記載の発明は、原料容器内にあって原料の払い出しに伴う流動状態を検出する原料流動検出手段と原料容器外にあって原料流動検出手段の動作により原料の有無を検出する売切れ検知手段を設けたことで、原料容器内における原料の単なる存在有無はもとより、実際に販売に供される有効原料の有無を直接検出でき、払い出しに伴う原料容器内における原料自体の挙動を直接的に検出することができる。また、直接的に原料の有無を検出することで、原料容器21内における微粉の付着やよごれ、および原料容器21の着色や変色、並びに検出する原料自体の色差、比重等に依らずに売切れを検出でき、安定した飲料販売を行うことができる。
【0053】
また、請求項2に記載の発明は、請求項1に記載の発明に加えて、売切れ検知手段を磁気もしくは光を検出対象とする非接触検知手段にしたことで、原料容器21内には配線を必要とするような機能部品が無く、また売切れ検知手段38と原料容器21とは分離してそれぞれ別体物とできるので、原料容器21をそのまま清掃できてメンテナンス性が良いものとなる。
【0054】
さらに、売切れ検知手段38と原料容器21とは密着させる必要がなく、脱着に伴う装着位置ズレ等に起因する検出信頼性を損なうことなく、構造上簡便で安価なものとすることができる。
【0055】
また、請求項3に記載の発明は、請求項2に記載の発明に加えて、原料流動検出手段による動作を原料容器外の売切れ検知手段に伝達する検出伝達手段を設けたことで、マグネット36を原料容器21内に設けることができ、マグネット36への原料の付着がなくなり、より安定した売切れ検出を行うことができる。
【図面の簡単な説明】
【図1】本発明による原料売切れ検出装置の実施の形態1の断面図
【図2】同実施形態の売切れ状態の断面図
【図3】同実施形態の販売可能状態の断面図
【図4】本発明による原料売切れ検出装置の実施の形態2の要部断面図
【図5】従来の原料売切れ検出装置の断面図
【符号の説明】
21 原料容器
33 原料流動検出手段
38 売切れ検知手段
39 検出伝達手段
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a raw material sold-out detection device of a beverage vending machine that manufactures and sells coffee and the like.
[0002]
[Prior art]
Taking a coffee vending machine as an example of a beverage vending machine, this vending machine has a raw material container for storing ingredients such as coffee, a hot water tank, and a storage container for additives such as sugar and powdered milk. The appropriate amount of coffee raw materials, additive raw materials, and hot water are sent to the beverage production department to sell coffee.
[0003]
Here, in order to know the storage amounts of the raw materials such as coffee and sugar, and to appropriately respond to the sold-out processing and the replenishment timing of the raw materials, a raw material sold-out detection device is required.
[0004]
2. Description of the Related Art As a conventional raw material sold-out detection device, there is an apparatus in which an electrostatic capacity type sold-out sensor is closely attached to a raw material container (for example, see Patent Document 1).
[0005]
Hereinafter, the conventional raw material sold-out detecting device will be described with reference to the drawings.
[0006]
FIG. 5 is a sectional view of a conventional raw material sold-out detecting device. As shown in FIG. 5, the conventional raw material sold-out detection device includes a raw material container 1, a capacitance type sold-out sensor 15 disposed outside and in close contact with the raw material container 1, and a sensor made of a member such as resin. A case 16, a window 17 opened in the sensor case 16 for disposing the sold-out sensor 15, a spring 18 for constantly pressing the sold-out sensor 15 against the side wall 1 a of the raw material container 1, and a pressing plate 19 thereof. It is configured.
The operation of the raw material sold-out device configured as described above will be described below.
[0007]
First, in the raw material sold-out device, when the powder raw material P in the container 1 is sufficient in position level to surpass the sold-out sensor 15 as shown in the solid line state diagram, it is determined that the raw material is present, and as shown by the dashed line state. When the position level decreases to a point where the space area corresponds to the sold-out sensor 15, the sold-out state is reached. At this time, the presence or absence of the raw material is determined by detecting a change in the capacitance with a sold-out sensor, and a sold-out display lamp or the like is turned on to notify the replenishment time.
[0008]
[Patent Document 1]
Japanese Patent Application Laid-Open No. Hei 5-307671
[Problems to be solved by the invention]
However, in the above-described conventional configuration, the sold-out sensor 15 needs to be constantly pressed and brought into close contact. In the case of a material container which is frequently attached and detached, there is a factor such as attachment of the material to the contact surface due to moisture or the like, and the detection stability is reduced. However, there is a problem in that it lacks in performance and affects the detection accuracy of sold out.
[0010]
An object of the present invention is to solve the conventional problem, and an object of the present invention is to provide a raw material sold-out detection device capable of accurately and easily detecting a sold-out determination of a raw material without affecting the detection accuracy of sold-out even by desorption.
[0011]
Furthermore, in the above-mentioned conventional configuration, the mounting position and the biasing direction of the spring 18 are restricted due to the structure in which the raw material container is inserted and detached in the front-rear direction and is always attached in close contact. It has problems such as increase.
[0012]
Another object of the present invention is to provide a raw material sold-out detecting apparatus which has few structural restrictions, has less unsold when detecting sold-out, and has less sales loss.
[0013]
Furthermore, in the above-described conventional configuration, the change in the raw material filling level in the raw material container due to the sales and consumption is not uniform. Although only the presence or absence of the raw material in the container is detected even though it is not supplied, there is a problem that a selling operation is performed and a low-quality beverage is provided.
[0014]
The present invention is to solve the conventional problem, and by directly detecting the raw material that can be actually supplied, even if there is a raw material that cannot be supplied due to a bridge or the like even though it is present in the raw material container, it is erroneously sold. It is an object of the present invention to provide a raw material sold-out detection device capable of constantly selling beverages of stable quality without any delay.
[0015]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention is characterized in that the presence or absence of a raw material is determined by the operation of a raw material flow detecting means inside a raw material container and detecting a flow state accompanying the dispensing of raw material and outside the raw material container. It is equipped with a sold-out detection means to detect the raw material itself in the raw material container accompanying the dispensing in order to directly detect the presence or absence of the raw material in the raw material container as well as the presence or absence of the effective raw material actually sold for sale. Has the effect of being able to directly detect the behavior of
[0016]
According to the second aspect of the present invention, the sold-out detecting means is constituted by a non-contact detecting means for detecting a magnetic or light object, and is hardly restricted by a dimensional configuration, irrespective of a contact condition such as a degree of adhesion. It has the effect of enabling stable detection with high detection accuracy.
[0017]
The invention according to claim 3 is provided with a detection transmitting means for transmitting the operation of the raw material flow detecting means to the sold-out detecting means outside the raw material container, wherein the behavior of the raw material itself in the raw material container is provided outside. By transmitting the signal to a position closer to the sold-out detecting means, it has an effect of improving the stability and reliability of the detection.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a raw material sold-out detection device of a vending machine according to the present invention will be described with reference to the drawings. In addition, about the same structure as a conventional one, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
[0019]
(Embodiment 1)
FIG. 1 is a sectional view of a raw material sold-out detection device of a vending machine according to Embodiment 1 of the present invention. FIG. 2 is a sectional view of the raw material sold-out device according to the embodiment in a sold-out state. FIG. 3 is a cross-sectional view of the raw material sold-out device according to the embodiment in a sellable state.
[0020]
1, 2 and 3, a raw material container 21 is a container for accommodating a powder raw material, a bean raw material and the like, and a lower part of the raw material container 21 is interlocked with an agitator wheel 22 for preventing the raw material sticking and an agitator wheel 22. An operating agitator plate 23 is provided.
[0021]
The raw material delivery screw 24 rotates for each sales command and takes out the raw material from the delivery port 25. A motor 26 with a speed reduction mechanism 27 drives the delivery screw 24 to rotate.
[0022]
The support base 28 supports the raw material container 21 thereon. A lock fitting 29 for fixing the raw material container 21 immovably is fixed to the tip of the support base 28. On the other hand, at the front position of the bottom wall 21 b of the raw material container 21, there is formed a claw portion 30 which is inserted into the lock fitting 29 and sets the raw material container 21 on the support base 28. A fitting hole (not shown) for correctly setting the position is provided at a position corresponding to a guide post (not shown) at the time of insertion provided on the support base 28.
[0023]
Therefore, when the lock fitting 29 and the claw portion 30 are aligned in a straight line and the bottom surface of the raw material container 21 is pushed on the surface of the support base 28, the lock fitting 29 engages with the claw portion 30 and the guide post. The claw portion 30 is locked by the elastic locking portion 29a of the lock fitting 29 and the raw material container 21 itself is turned by the output of the motor 26 and the discharge resistance of the raw material. It is fixed to the support base 28 so as not to receive a force. At this time, the joint 31 at the rear end of the delivery screw 24 is fitted and connected to the drive pin 32 provided at the tip of the shaft of the speed reduction mechanism 27.
[0024]
Next, a raw material flow detecting means 33 is provided on the lower side of the raw material container 21 on the side of the counter discharge port 25, and the raw material flow detecting means 33 includes a shaft 34 penetrating both wall surfaces of the raw material container 21 and a shaft 34. It is mainly constituted by a raw material flow detection plate 35 rotatably supported on the base material and a magnet 36 formed of a permanent magnet fixedly supported by one end of the raw material flow detection plate 35. Here, the tip of the material flow detection plate 35 on the side opposite to the magnet 36 is configured to extend to the vicinity of the side opposite to the side of the delivery screw 25 of the delivery screw 24 in order to minimize the remaining amount of sold-out detection.
[0025]
Further, a cover 37 is disposed above the raw material flow detection plate 35 so as to cover the upper portion on the magnet 36 mounting side with the shaft 34 interposed therebetween, and when the raw material does not exist or is sold out, the shaft 37 is centered. The position of the center of gravity of the raw material flow detection plate 35 is set in advance so that the side on which the magnet 36 is attached becomes heavier in weight balance.
[0026]
Next, when the raw material container 21 is mounted on the support base 28 on the support base 28, a sold-out detection means 38 is provided at a position where the magnet 36 of the raw material flow detection plate 35 is opposed to and close to the support base 28. The sold-out detecting means 38 is constituted by a sensor such as a reed switch or a Hall element that detects an operation in response to the strength of a magnetic field.
[0027]
Therefore, all members formed in the vicinity of the magnet 36 and the sold-out detecting means 38 are made of a resin material or a non-magnetic metal material which is not affected by magnetism.
[0028]
The operation of the raw material sold-out detection device configured as described above will be described below.
[0029]
In the present invention, an embodiment in which the sold-out detecting means 38 such as a reed switch or a Hall element is used and the sold-out detecting means 38 is arranged close to the outside of the raw material container 21 will be described.
[0030]
The sold-out detection is based on the presence or absence of the flow state of the raw material due to the supply of the raw material by selling, that is, the change in the magnetic strength caused by the proximity or separation of the magnet 36 from the sold-out detection means 38 depending on the presence or absence of the rotation resistance of the raw material flow detection plate 35 due to the raw material. Is performed by detecting Based on the difference in the magnetic field strength, the presence or absence of the raw material is determined by a contact switch of a reed switch or a detection circuit or a determination circuit (not shown), and a sold-out display lamp or the like is turned on to notify the replenishment time.
[0031]
Generally, the flow of the raw material in the raw material container 21 is performed starting from the rear end side of the delivery screw 24. That is, since most of the raw material that has fallen into the pitch space of the delivery screw 24 is sent out to the delivery port 25 side as it is, the delivery screw 24 that starts with the pitch space of the delivery screw 24 being practically empty. Starting from the last end of the flow, the flow by the falling supply of the raw material starts. Therefore, the raw material in the raw material container 21 is reduced from the rear end side of the delivery screw 24.
[0032]
As shown in FIG. 2, the raw material flow detection plate 35 has no contact interference with the raw material in the sold-out state, so that the magnet 36 tilts to the side closest to the sold-out detection means 38 around the shaft 34 due to the weight balance. And the sold-out signal is ON due to the close high magnetic field.
[0033]
Next, as shown in FIG. 3, a case where the raw material is refilled into the raw material container 21 from the sold-out state and becomes available for sale will be described. At this time, in the case of a raw material having a large specific gravity or in the case of a solid granular raw material such as coffee beans, the raw material flow detection plate 35 An attempt is made to rotate in a direction away from the sold-out detection means 38 due to a loss of weight balance. As a result, when the rotation is deviated to a position below the magnetic detection sensitivity of the sold-out detecting means 38, the proximity signal is turned off and the sold-out state is released and returned.
[0034]
On the other hand, when the raw material is in the form of fine powder or has a low bulk specific gravity, the raw material falls and spreads in a diffused state even when charged from above. Pressure may not be obtained.
[0035]
In this case, the release from the sold-out state is brought back with the subsequent supply of the raw material.
[0036]
That is, since the flow in the raw material container 21 is positively performed at the rear end of the feed screw 24, the raw material falls near the raw material flow detection plate 35 installed above the rear end of the feed screw 24. Flow proceeds in the direction of
[0037]
At this time, since the raw material flow detection plate 35 is tilted at an angle intersecting with the falling direction, the lower part of the raw material flow detection plate 35 is brought into a coarse density state by the falling flow generated below the raw material flow detection plate 35. . For this reason, the raw material flow detection plate 35 acts to maintain the pressure balance in equilibrium, and as a result, rotates in a downward direction along the flow of the raw material.
[0038]
Accordingly, as the raw material is supplied, the magnet 36 gradually tilts about the shaft 34 toward the side deviating from the sold-out detecting means 38, and when the magnet 36 rotates and deviates to a position below the magnetic detection sensitivity of the sold-out detecting means 38, The signal is turned off, and here, the sold-out state is canceled and restored for the first time.
[0039]
In these cases, the sold-out state continues for a while after the replenishment of the raw materials. Therefore, after the replenishment of the raw materials at the time of the sold-out, the sold-out input signal is restricted until a preset raw material supply operation time (number of cups) is sold. Is controlled by a control circuit (not shown).
[0040]
Next, when the raw material is consumed and the accumulation level of the filling amount reaches a level lower than the level near the lower end of the raw material flow detection plate 35, the raw material contacts the lower end of the raw material flow detection plate 35 to maintain the inclination angle. When the restoring force due to the weight balance of the raw material flow detection plate 35 itself exceeds the force, the raw material flow detection plate 35 is moved to a predetermined position where the magnet 36 side around the shaft 34 is closest to the sold-out detection means 38. Until the sold-out signal is turned ON.
[0041]
As described above, the raw material out-of-stock detecting device according to the present embodiment includes the raw material flow detecting means 33 inside the raw material container 21 for detecting the flow state accompanying the discharge of the raw material and the raw material flow detecting means 33 outside the raw material container 21. By providing the sold-out detecting means 38 for detecting the presence or absence of the raw material by the operation of the above, the presence or absence of the raw material can be detected indirectly, the adhesion or contamination of the fine powder in the raw material container 21, the coloring or discoloration of the raw material container 21, and The sold-out can be detected stably without depending on the color difference of the raw material itself to be detected, specific gravity, etc., and the raw material that can be supplied is directly detected, so that the raw material can be detected in the raw material container 21, Even when there are raw materials that cannot be supplied due to a bridge or the like, it is possible to always sell beverages of stable quality without erroneous sales.
[0042]
Further, since there is no functional component in the raw material container 21 that requires wiring, and the sold-out detecting means 38 and the raw material container 21 can be separated and formed as separate objects, the raw material container 21 can be cleaned as it is. Good maintainability.
[0043]
Further, the sold-out detection means 38 and the raw material container 21 do not need to be in close contact with each other, and the structure can be made simple and inexpensive without deteriorating the detection reliability caused by the displacement of the mounting position due to the attachment and detachment.
[0044]
In the description, the raw material stored in the raw material container 21 is described as a coffee powder raw material. However, the raw material sold out detection device of the present invention can be used for the raw material container 21 containing coffee bean raw material, sugar, powdered milk, and the like. Needless to say.
[0045]
(Embodiment 2)
FIG. 4 is a sectional view of a main part of a raw material sold-out detection device according to Embodiment 2 of the present invention. In FIG. 4, a raw material container 21 stores a powder raw material, a bean raw material and the like, and a sold-out detecting device includes a raw material flow detecting plate 35 rotatably supported by a shaft 34 penetrating both wall surfaces of the raw material container 21. And its detection transmitting means 39.
[0046]
The operation of the raw material sold-out detection device configured as described above will be described below.
[0047]
In the present invention, the raw material flow plate 35 is rotated by the raw material flow accompanying the presence or absence of the raw material, and the detection transmitting means 39 is rotated in conjunction with the rotation. A magnet is attached to the outside of the raw material container 21 of the detection transmitting means, and the reed switch makes contact or non-contact with the magnet to determine the presence or absence of the raw material and turn on a sold-out display lamp or the like. Tell the time.
[0048]
As described above, the raw material sold-out detection device according to the present embodiment includes the raw material flow detecting means 35 for detecting the flow state accompanying the discharge of the raw material and the raw material flow detecting device 35 outside the raw material container 21 as in the first embodiment. In addition, by providing the sold-out detecting means 38 for detecting the presence or absence of the raw material by the operation of the raw material flow detecting means 35, the presence or absence of the raw material can be indirectly detected, and the adhesion and contamination of the fine powder in the raw material container 21 and the raw material Since the sold-out can be detected stably without depending on the coloring or discoloration of the container 21 and the color difference, specific gravity, etc. of the raw material to be detected, the raw material that can be supplied is directly detected in practice. Even if there are raw materials that cannot be supplied due to a bridge or the like even though they are present in 21, it is possible to always sell beverages of stable quality without erroneous sales. .
[0049]
Further, since there is no functional component in the raw material container 21 that requires wiring, and the sold-out detecting means 38 and the raw material container 21 can be separated and formed as separate objects, the raw material container 21 can be cleaned as it is. Good maintainability.
[0050]
Further, the sold-out detecting means 38 and the raw material container 21 do not need to be in close contact with each other, and can be made simple and inexpensive structurally without deteriorating the detection reliability due to the displacement of the mounting position due to the attachment and detachment.
[0051]
Further, in the above description, the reed switch is used. However, a configuration in which the magnetic field is cut off and returned in conjunction with the operation of the raw material flow detection plate 35 or a magnetic substance is brought close to the magnetic material so that the magnetic flux density distribution is induced by the magnetic field. It goes without saying that the same effect as that of the present invention can be obtained even if the change is detected.
[0052]
【The invention's effect】
As described above, the invention according to claim 1 is based on the operation of the raw material flow detecting means inside the raw material container and detecting the flow state accompanying the discharge of the raw material and the raw material flow detecting means outside the raw material container. Provision of a sold-out detection means to detect the presence or absence of raw materials in the raw material container enables the direct detection of the presence or absence of the effective raw material actually sold for sale, as well as the raw material itself in the raw material container accompanying the dispensing. Can be directly detected. Further, by directly detecting the presence / absence of the raw material, it is possible to prevent the fine powder from adhering or becoming dirty in the raw material container 21, coloring or discoloring of the raw material container 21, and the sold out regardless of the color difference, specific gravity, etc. of the detected raw material itself. The beverage can be detected, and stable beverage sales can be performed.
[0053]
The invention according to a second aspect of the present invention is the same as the first aspect of the invention, except that the sold-out detection means is a non-contact detection means for detecting magnetic or light as a detection target. Since the sold-out detecting means 38 and the raw material container 21 can be separated from each other and separated from each other, the raw material container 21 can be cleaned as it is, and the maintenance property is good.
[0054]
Further, the sold-out detection means 38 and the raw material container 21 do not need to be in close contact with each other, and the structure can be made simple and inexpensive without deteriorating the detection reliability caused by the displacement of the mounting position due to the attachment and detachment.
[0055]
According to a third aspect of the present invention, in addition to the second aspect of the present invention, a detection transmission unit for transmitting the operation of the raw material flow detection unit to a sold-out detection unit outside the raw material container is provided. Can be provided in the raw material container 21, the raw material does not adhere to the magnet 36, and more stable out-of-sale detection can be performed.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a raw material sold-out detection device according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the sold-out state of the same embodiment. FIG. FIG. 5 is a cross-sectional view of a main part of a raw material sold-out detection device according to a second embodiment of the present invention.
21 raw material container 33 raw material flow detecting means 38 sold-out detecting means 39 detection transmitting means

Claims (3)

原料容器にコーヒー等の原料を収納し、販売毎に原料および湯水を供給して飲料を調合販売する飲料自動販売機において、原料容器内にあって原料の払い出しにともなう流動状態を検出する原料流動検出手段と原料容器外にあって原料流動検出手段の動作により原料の有無を検出する売切れ検知手段を設けたことを特徴とする原料売切れ検出装置。In a beverage vending machine that stores coffee and other raw materials in a raw material container and supplies the raw material and hot water for each sale to mix and sell beverages, a raw material flow in the raw material container that detects the flow state accompanying the dispensing of raw materials An apparatus for detecting a sold-out raw material, comprising a detecting means and a sold-out detecting means which is outside the raw material container and detects the presence or absence of the raw material by the operation of the raw material flow detecting means. 売切れ検知手段が磁気もしくは光を検出対象とする非接触検知手段であることを特徴とする請求項1に記載の原料売切れ検出装置。2. The raw material sold-out detecting apparatus according to claim 1, wherein the sold-out detecting means is a non-contact detecting means for detecting magnetic or light. 原料流動検出手段による動作を原料容器外の売切れ検知手段に伝達する検出伝達手段を設けたことを特徴とする請求項1または請求項2に記載の原料売切れ検出装置。The raw material sold-out detecting device according to claim 1 or 2, further comprising a detection transmitting means for transmitting the operation of the raw material flow detecting means to the sold-out detecting means outside the raw material container.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021041985A (en) * 2019-09-13 2021-03-18 ホシザキ株式会社 Beverage supply machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021041985A (en) * 2019-09-13 2021-03-18 ホシザキ株式会社 Beverage supply machine
JP7321856B2 (en) 2019-09-13 2023-08-07 ホシザキ株式会社 beverage dispenser

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