JP5643243B2

JP5643243B2 - Weighing machine that can easily recover from inundation

Info

Publication number: JP5643243B2
Application number: JP2012036679A
Authority: JP
Inventors: 中原　慎二; 慎二中原; 公夫山田
Original assignee: 株式会社富永製作所
Priority date: 2012-02-22
Filing date: 2012-02-22
Publication date: 2014-12-17
Anticipated expiration: 2032-02-22
Also published as: JP2013170000A

Description

本発明は、大雨、洪水、津波などの災害で計量機が浸水して壊れてしまった場合でも、水が引いた後に特別な工具を用いずとも容易に復旧できる計量機に関するものである。 The present invention relates to a weighing machine that can be easily recovered without using a special tool after the water is drawn even if the weighing machine is flooded and broken due to a disaster such as heavy rain, flood, or tsunami.

下記文献１及び２のように、不意の停電などに備えた計量機は存在するものの、浸水後の迅速な復旧に対応した計量機は存在しない。 As described in the following documents 1 and 2, there are weighing machines that are prepared for unexpected power outages, but there are no weighing machines that can be quickly restored after flooding.

特開２００７−２６１５８９号公報JP 2007-261589 A 特開２００７−２６１２８９号公報JP 2007-261289 A

ガソリンステーション等で使用されている従来の計量機は、大雨、洪水、津波などの災害で浸水した場合を想定して設計されていない。そのため浸水後に復旧させるためには、水に浸かって使用不能になった制御回路、表示器、モータなどの電気系統の部品を全て交換しなければならない。しかしながらモータなどの配線は計量機の筐体内部で複雑に引き回されているため、すべての電気系統の部品を交換することは容易ではない。 Conventional measuring machines used in gasoline stations and the like are not designed on the assumption that they are inundated by disasters such as heavy rain, floods, and tsunamis. Therefore, in order to recover after flooding, all parts of the electrical system such as control circuits, indicators, motors, etc. that have become unusable after being soaked in water must be replaced. However, since the wiring of the motor and the like is complicatedly routed inside the housing of the weighing machine, it is not easy to replace all the electrical system components.

すべての使用部品を防水構造とすることも考えられるが、計量機の価格が著しく高くなって、現実的ではない。 Although it is conceivable to make all the parts used waterproof, it is not practical because the price of the weighing machine becomes extremely high.

また、ポンプのサンプ室は大気と連通しているため、浸水の際にポンプ内に水が浸入するので、水抜きの作業も必要となる。 Further, since the sump chamber of the pump communicates with the atmosphere, water enters the pump when it is submerged, so that it is necessary to drain the water.

本発明の目的は、計量機の価格を著しく高くすることなく、浸水復旧を容易にした計量機を提供することにある。 It is an object of the present invention to provide a weighing machine that facilitates restoration of flooding without significantly increasing the price of the weighing machine.

上記目的に加えて、本発明の他の目的は、簡単な構造でモータの交換を容易にした計量機を提供することにある。 In addition to the above object, another object of the present invention is to provide a weighing machine that can easily replace a motor with a simple structure.

さらに本発明の他の目的は、簡単な構造でポンプを防水構造にした計量機を提供することにある。 Another object of the present invention is to provide a weighing machine having a simple structure and a waterproof pump structure.

本発明が改良の対象とする計量機は、筐体内に、少なくともポンプ、ポンプを駆動するモータ及び流量計が収納されている第１の部品収納室と、少なくともモータの電源回路を含む制御回路及び表示装置が収納されている第２の部品収納室とを備えている。モータと制御回路とは、接続用電気ケーブルによって接続されている。本発明で用いるポンプは、水に浸かっても内部に水が入らない防水構造と防爆構造を有している。また流量計も防水構造と防爆構造を有している。モータは、防爆構造を有しているが防水構造は有していない。本発明では、モータを、工具を使用せずに取り外しが可能な取付構造を用いて第１の部品収納室内に固定する。そして本発明では、接続用電気ケーブルを、モータから延びる第１の電気ケーブルと第２の部品収納室から出て第１の部品収納室内に延びる第２の電気ケーブルと、第１の部品収納室内に配置されて第１の電気ケーブルと第２の電気ケーブルとを接続する防水構造及び防爆構造を有するコネクタとから構成する。また制御回路及び表示装置が収納された第２の部品収納室は防水構造を有している。 A weighing machine to be improved by the present invention is a control circuit including at least a pump, a motor for driving the pump and a flow meter in a housing, and a power circuit for at least the motor. And a second component storage chamber in which the display device is stored. The motor and the control circuit are connected by a connecting electric cable. The pump used in the present invention has a waterproof structure and an explosion-proof structure in which water does not enter even when immersed in water. The flow meter also has a waterproof structure and an explosion-proof structure. The motor has an explosion-proof structure but does not have a waterproof structure. In the present invention, the motor is fixed in the first component storage chamber using a mounting structure that can be removed without using a tool. In the present invention, the connection electric cable includes a first electric cable extending from the motor, a second electric cable extending from the second component storage chamber and extending into the first component storage chamber, and the first component storage chamber. And a connector having a waterproof structure and an explosion-proof structure for connecting the first electric cable and the second electric cable. The second component storage chamber in which the control circuit and the display device are stored has a waterproof structure.

モータを防水構造にするためには、複雑な構造が必要になる上、モータの価格が非常に高くなる。そこで本発明では、浸水が発生した場合、モータが使用不能になっても、計量機の設置場所に予備のモータを予め準備しておけば、専門家でなくても、簡単にモータを交換できるようにし、その他の電気部品を交換しなくても、計量機を動作可能にできるようにするために上記構成を採用した。本発明の計量機では、コネクタを用いてモータから延びる第１の電気ケーブルを第２の電気ケーブルと接続しているので、コネクタの接続を解除すれば、工具を使用しなくても、モータと一緒に第１の電気ケーブルを簡単に取り外すことができる。したがってコネクタで接続可能な第１の電気ケーブルが接続された予備のモータを予め準備しておけば、専門家でなくても、その場でモータと一緒に第１の電気ケーブルを交換することにより、計量機を動作可能な状態に復旧できる。なお、この予備のモータにはドライブプーリが予め取り付けられているのが好ましい。 In order to make the motor waterproof, a complicated structure is required and the price of the motor becomes very high. Therefore, in the present invention, even if the motor becomes unusable in the case of flooding, if a spare motor is prepared in advance at the place where the weighing machine is installed, the motor can be easily replaced even by a non-expert. Thus, the above-described configuration is adopted so that the weighing machine can be operated without replacing other electrical components. In the weighing machine of the present invention, since the first electric cable extending from the motor is connected to the second electric cable using the connector, if the connection of the connector is released, the motor and the motor can be used without using a tool. Together, the first electrical cable can be easily removed. Therefore, if a spare motor to which a first electric cable that can be connected by a connector is connected is prepared in advance, even if it is not an expert, the first electric cable can be exchanged together with the motor on the spot. The weighing machine can be restored to an operable state. In addition, it is preferable that a drive pulley is attached to the spare motor in advance.

本発明は、筐体に販売時点情報管理装置（ＰＯＳ）が収納された第３の収納室が設けられる場合において、第３の収納室を防水構造を有しない構造とすることを許容する。販売時点情報管理装置（ＰＯＳ）は、計量機の売り上げ管理に使用するものであって、計量機の運転動作には本来的に必要なものではない。そこで販売時点情報管理装置（ＰＯＳ）が収納される第３の収納室を防水構造を有しない構造とすれば、浸水に早期に復旧対応できる計量機の価格上昇を抑えることができる。 The present invention allows the third storage chamber to have a structure that does not have a waterproof structure when the third storage chamber in which the point-of-sale information management device (POS) is stored is provided in the housing. The point-of-sale information management device (POS) is used for sales management of the weighing machine, and is not essentially required for the operation of the weighing machine. Therefore, if the third storage room in which the point-of-sale information management device (POS) is stored has a structure that does not have a waterproof structure, it is possible to suppress an increase in the price of a weighing machine that can quickly recover from flooding.

コネクタは、第１の電気ケーブルに接続された第１のコネクタ部材と、第２の電気ケーブルに接続された第２のコネクタ部材とからなる。そして第１のコネクタ部材と第２のコネクタ部材とは、工具を使用せずに接続及び分離が可能な構造を有しているものを用いることが好ましい。 The connector includes a first connector member connected to the first electric cable and a second connector member connected to the second electric cable. And it is preferable to use what has a structure which can connect and isolate | separate a 1st connector member and a 2nd connector member, without using a tool.

モータの配置場所は任意であるが、筐体内のスペースを有効利用することを考えるとポンプの上にモータを配置するのが好ましい。この場合には、ポンプの上にモータ固定台を固定し、モータはモータ固定台に取り付けられた前述の取付構造を用いて固定すればよい。このようにするとモータがポンプの上にあるため、交換作業が容易である上、交換作業の際に取付構造が落下したり紛失したりすることを防止できる。 The location of the motor is arbitrary, but considering the effective use of the space in the housing, it is preferable to arrange the motor on the pump. In this case, a motor fixing base may be fixed on the pump, and the motor may be fixed using the mounting structure described above attached to the motor fixing base. In this case, since the motor is on the pump, the replacement work is easy, and it is possible to prevent the mounting structure from dropping or being lost during the replacement work.

なお前述のコネクタの第２のコネクタ部材を、第１のコネクタ部材が上側に位置する姿勢でモータ固定台に固定すれば、第１のコネクタ部材の接続及び分離作業を楽な姿勢で行える上、モータの交換作業中に第２のコネクタが落下して破損することを防止できる。 If the second connector member of the above-mentioned connector is fixed to the motor fixing base in a posture in which the first connector member is located on the upper side, the connection and separation work of the first connector member can be performed in an easy posture. It is possible to prevent the second connector from being dropped and damaged during the motor replacement operation.

取付構造は、工具を用いることなくモータを交換できるものであれば、どのような構造でもよい。例えば、取付構造をモータ固定台に固定されたベルト取付部と、モータを間に介してベルト取付部と対向する位置にモータ固定台に固定されたアジャスト・ファスナ取付部と、該アジャスト・ファスナ取付部に取り付けられたアジャスト・ファスナ本体と、ベルト取付部に一端が取り付けられ、他端にアジャスト・ファスナ用フックが取り付けられてモータをモータ固定台に向かって押し付けるベルトとから構成することができる。このような構造の取付構造であれば、モータを押さえ付ける位置にベルトを配置し、アジャスト・ファスナ用フックをアジャスト・ファスナ本体に係止させてアジャスト・ファスナ本体を操作することにより、簡単にモータを取り付けることができる。またモータを取り外す際には、アジャスト・ファスナ本体を操作することにより簡単にモータを外すことができる。この取付構造では、構成部品がモータ固定台から落下することがないので、専門家以外の者が作業する場合でも、取付構造の構成部品が交換作業中に紛失してしまうことを防止できる。 The attachment structure may be any structure as long as the motor can be replaced without using a tool. For example, a belt mounting portion whose mounting structure is fixed to the motor fixing base, an adjustment / fastener mounting portion fixed to the motor fixing base at a position facing the belt mounting portion with the motor interposed therebetween, and the adjustment / fastener mounting An adjustment / fastener main body attached to the belt portion, and a belt having one end attached to the belt attachment portion and an adjustment / fastener hook attached to the other end to press the motor toward the motor fixing base. With this type of mounting structure, the belt can be placed at the position where the motor is pressed, the adjustment / fastener hook can be locked to the adjustment / fastener body, and the adjustment / fastener body can be operated. Can be attached. When removing the motor, the motor can be easily removed by operating the adjust fastener main body. In this mounting structure, since the component parts do not fall from the motor fixing base, it is possible to prevent the component parts of the mounting structure from being lost during the replacement work even when a person other than an expert works.

アジャスト・ファスナ本体としては、アジャスト・ファスナ用フックと係合するフック係合部と、手動でセット操作されるとフック係合部を介してアジャスト・ファスナ用フックに引っ張り力を与え、手動で解除操作されるとフック係合部とアジャスト・ファスナ用フックとの係合を解除する操作機構とを備えたものを用いることができる。 As for the adjuster / fastener body, a hook engaging part that engages with the adjuster / fastener hook, and when manually set, a pulling force is applied to the adjuster / fastener hook via the hook engaging part to release it manually. When operated, it is possible to use one provided with an operation mechanism for releasing the engagement between the hook engaging portion and the adjustment / fastener hook.

ベルトだけでモータを固定した場合、モータとモータ固定台とが並ぶ方向へのモータの動きは規制できるものの、この方向と直交する直交方向への動きを規制することができない。そのため外部から加わる振動で、モータが直交方向へ移動する可能性がある。そこで取付構造は、モータの取付用ベースに設けられた係合部と、モータ固定台に設けられてモータの係合部と係合する被係合部とを更に備えているのが好ましい。この係合部と被係合部とは、モータをポンプに近づけるときに係合状態となり、モータをポンプから離すときに非係合状態になる係合構造を有しているのが好ましい。このような係合構造を有する係合部と被係合部とを取付構造に付加すると、外部からどの方向の振動が加わっても、モータが移動することを簡単な構造で阻止することができる。なお係合部を複数の穴及び複数のピンの一方から構成し、被係合部を複数の穴及び複数のピンの他方から構成すると、非常に簡単な構造で、取付構造を構成することができる。 When the motor is fixed only by the belt, the movement of the motor in the direction in which the motor and the motor fixing base are arranged can be restricted, but the movement in the orthogonal direction orthogonal to this direction cannot be restricted. Therefore, the motor may move in the orthogonal direction due to vibration applied from the outside. Therefore, the mounting structure preferably further includes an engaging portion provided on the motor mounting base and an engaged portion provided on the motor fixing base and engaged with the engaging portion of the motor. The engaging portion and the engaged portion preferably have an engaging structure that is in an engaged state when the motor is brought close to the pump and is in a non-engaged state when the motor is separated from the pump. When the engaging portion and the engaged portion having such an engaging structure are added to the mounting structure, it is possible to prevent the motor from moving with a simple structure no matter which direction vibration is applied from the outside. . If the engaging part is composed of one of a plurality of holes and a plurality of pins, and the engaged part is composed of the other of the plurality of holes and the plurality of pins, the mounting structure can be configured with a very simple structure. it can.

またモータの取付構造を、モータの取付用ベースに設けられた複数の貫通穴と、モータ固定台に設けられて複数の貫通穴を貫通する複数のネジ付きピンと、複数の貫通穴に挿入されて複数の貫通穴から突出する複数のネジ付きピンのネジ部に螺合されて手作業で回すことができる複数の手回しナット部材とから構成することができる。このような構造の取付構造を用いると、手回しナット部材を回す作業をするだけで、モータの取り外しと、モータの取付とを行うことができる。 The motor mounting structure is inserted into a plurality of through holes provided in the motor mounting base, a plurality of screw pins provided in the motor fixing base and penetrating the plurality of through holes, and the plurality of through holes. A plurality of hand-turned nut members that can be screwed into the threaded portions of the plurality of threaded pins protruding from the plurality of through holes and can be manually rotated. When the attachment structure having such a structure is used, the motor can be removed and the motor can be attached only by the operation of turning the hand-turned nut member.

ポンプが、内部に空気分離装置で分離された空気を溜めるサンプ室を有している場合には、サンプ室の空気を外部に放出する空気放出路に、ポンプが水に浸かったときに、サンプ室に水が入ることを阻止するフロート・バルブを設けるのが好ましい。このようにすると既存のポンプをフロート・バルブを追加するだけで簡単な構造で防水構造にすることができる。したがって費用をかけずに、ポンプの防水化を図ることができる。 When the pump has a sump chamber in which the air separated by the air separation device is stored, when the pump is immersed in water in the air discharge path for releasing the air in the sump chamber to the outside, A float valve is preferably provided to prevent water from entering the chamber. In this way, an existing pump can be made waterproof with a simple structure by simply adding a float valve. Therefore, the pump can be waterproofed without cost.

なおフロート・バルブは、モータ固定台に固定するのが好ましい。このような構造にすると、フロート・バルブの設置が容易になる上、浸水した場合にフロート・バルブが水で浮動して破損することを防止できる。 The float valve is preferably fixed to a motor fixing base. With such a structure, it is easy to install the float valve, and it is possible to prevent the float valve from floating due to water and being damaged when immersed.

第２の部品収納室の防水構造は、第２の部品収納室に引き込まれる信号線及び動力線を介して第２の部品収納室内に水が入ることを阻止するために、防水コネクタを備えているのが好ましい。このような構造であれば、第２の部品収納室を防水構造にしても、組み立ての際のケーブルの接続が容易になる。 The waterproof structure of the second component storage chamber includes a waterproof connector in order to prevent water from entering the second component storage chamber via the signal line and the power line drawn into the second component storage chamber. It is preferable. With such a structure, even if the second component storage chamber is made waterproof, it is easy to connect the cables during assembly.

モータからポンプに動力を伝える動力伝達機構の構成は任意であるが、モータの出力軸にドライブプーリを固定し、ポンプの入力軸に被ドライブプーリを固定し、ドライブプーリと被ドライブプールとをベルトにより連結する動力伝達機構を用いることができる。このような動力伝達機構を設ければ、予め出力軸にドライブプーリを取り付けたモータを用意しておけば、手作業でベルトの掛け替えを行うだけで、動力伝達機構を復旧することができる。 The power transmission mechanism that transmits power from the motor to the pump is optional, but the drive pulley is fixed to the motor output shaft, the driven pulley is fixed to the pump input shaft, and the drive pulley and the driven pool are belted. It is possible to use a power transmission mechanism that is coupled by the above. If such a power transmission mechanism is provided, if a motor having a drive pulley attached to the output shaft is prepared in advance, the power transmission mechanism can be restored simply by changing the belt manually.

（Ａ）乃至（Ｄ）は、本発明をガソリン等の給油機の計量機に適用した実施の形態の正面図、側面図、正面下側パネルを外して筐体の一部を透明なものとして示した正面図及び背面下側パネルを外して筐体の一部を透明なものとして示した背面図である。(A) thru | or (D) remove the front view, side view, front lower panel of embodiment which applied this invention to the measuring machine of refueling machines, such as gasoline, and make a part of housing | casing transparent It is the rear view which removed the shown front view and the back lower panel, and showed a part of housing | casing as a transparent thing. （Ａ）乃至（Ｃ）は、ポンプの上にモータが装着された状態の側面図、正面図及び背面図である。(A) thru | or (C) are the side view of the state with which the motor was mounted | worn on the pump, a front view, and a rear view. フロート・バルブの構造を示す断面図である。It is sectional drawing which shows the structure of a float valve | bulb. （Ａ）及び（Ｂ）は、第２の部品収納室の防水構造を説明するために用いる図である。(A) And (B) is a figure used in order to demonstrate the waterproof structure of a 2nd components storage chamber.

以下、図面を参照して、本発明の実施の形態の一例を詳細に説明する。図１（Ａ）乃至（Ｄ）は、本発明をガソリン等の給油機の計量機１に適用した実施の形態の正面図、側面図、正面下側パネルを外して筐体の一部を透明なものとして示した正面図及び背面下側パネルを外して筐体の一部を透明なものとして示した背面図である。この計量機１は、図１（Ａ）及び（Ｂ）に示すように、筐体３の正面側と背面側の下側パネル５にそれぞれ３つのノズル掛け７を有しており、またノズル掛け７に装着された３つのノズル９にはそれぞれ３本のホース１１が接続されている。ホース１１は、筐体の天板部３Ａに設けられたホース接続部１３に接続されている。 Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. 1 (A) to 1 (D) show a front view, a side view, and a front lower panel of an embodiment in which the present invention is applied to a measuring machine 1 of a refueling machine such as gasoline, and a part of a housing is transparent. It is the rear view which removed the front view shown as a thing and a back lower panel, and showed a part of housing | casing as a transparent thing. As shown in FIGS. 1 (A) and 1 (B), the weighing machine 1 has three nozzle hooks 7 on the lower panel 5 on the front side and the rear side of the housing 3, respectively. Three hoses 11 are connected to the three nozzles 9 attached to 7 respectively. The hose 11 is connected to a hose connection portion 13 provided on the top plate portion 3A of the housing.

図１（Ｃ）及び（Ｄ）に示すように、筐体３の天板部３Ａ及び一対の側壁部３Ｂ及び３Ｃ内には、ホース接続部１３に一端が繋がる６本の供給管１５が、３本ずつ分けて収納されている。正面側の３つのホース接続部１３に接続された３本の供給管１５の他端は、筐体３の下側領域に形成された第１の部品収納室１７内に導入されている。また背面側の３つのホース接続部１３に接続された３本の供給管１５の他端も、筐体３の下側領域に形成された第１の部品収納室１７内に導入されている。なお図１（Ｃ）及び（Ｄ）には、ホース１１は図示を省略してある。 As shown in FIGS. 1C and 1D, in the top plate portion 3A and the pair of side wall portions 3B and 3C of the housing 3, six supply pipes 15 having one end connected to the hose connection portion 13 are provided. Three are stored separately. The other ends of the three supply pipes 15 connected to the three hose connection portions 13 on the front side are introduced into a first component storage chamber 17 formed in the lower region of the housing 3. The other ends of the three supply pipes 15 connected to the three hose connection portions 13 on the back side are also introduced into the first component storage chamber 17 formed in the lower region of the housing 3. In addition, the hose 11 is abbreviate | omitting illustration in FIG.1 (C) and (D).

第１の部品収納室１７には、正面側及び背面側に配置されて対向する２つのノズル９に対して１台ずつ設けられる３台のポンプ１９と、３台のポンプ１９をそれぞれ駆動する３台のモータ２１と、６台の流量計２３等が配置されている。１台のポンプ１９に対して２台の流量計２３が設けられている。２台の流量計２３は、それぞれ正面側及び背面側に配置されて対向する２つのノズル９につながる２本の供給管１５に吐き出される燃料の量をそれぞれ計量する。ポンプ１９とモータ２１との配置関係については後に詳しく説明する。ポンプ１９は、後述するフロート・バルブを設けることにより水に浸かっても内部に水が入らない防水構造になっており、また防爆構造を有している。また流量計２３も防水構造と防爆構造を有している。しかしモータ２１は、防爆構造を有しているが防水構造は有していない。 In the first component storage chamber 17, three pumps 19 provided for each of the two nozzles 9 arranged on the front side and the back side and facing each other, and three pumps 19 are respectively driven. A motor 21 and six flow meters 23 are arranged. Two flow meters 23 are provided for one pump 19. The two flow meters 23 measure the amount of fuel discharged to the two supply pipes 15 connected to the two nozzles 9 arranged on the front side and the back side, respectively. The arrangement relationship between the pump 19 and the motor 21 will be described in detail later. The pump 19 is provided with a float valve, which will be described later, and has a waterproof structure in which water does not enter even when immersed in water, and has an explosion-proof structure. The flow meter 23 also has a waterproof structure and an explosion-proof structure. However, the motor 21 has an explosion-proof structure but does not have a waterproof structure.

本実施の形態では、モータ２１からポンプ１９に動力を伝える動力伝達機構を、モータの出力軸に取付けられたドライブプーリ２２と、ポンプ１９の入力軸に取付けられた被ドライブプーリ２０と、ドライブプーリ２２と被ドライブプール２０とを連結するベルト２４とから構成している。このような動力伝達機構を設ければ、予め出力軸にドライブプーリ２２を取り付けたモータ２１を用意しておけば、手作業でベルト２４の掛け替えを行うだけで、動力伝達機構を復旧することができる。 In the present embodiment, a power transmission mechanism for transmitting power from the motor 21 to the pump 19 includes a drive pulley 22 attached to the output shaft of the motor, a driven pulley 20 attached to the input shaft of the pump 19, and a drive pulley. 22 and a belt 24 for connecting the driven pool 20 to each other. If such a power transmission mechanism is provided, if the motor 21 having the drive pulley 22 attached to the output shaft is prepared in advance, the power transmission mechanism can be restored simply by changing the belt 24 manually. it can.

第１の部品収納室１７の上には、べーパバリア機能を有する隔壁部２５が配置され、隔壁部２５の上には、図示しないモータの電源回路を含む制御回路及び表示部２７と表示部駆動回路を含む表示装置２９が収納されている第２の部品収納室３１と、販売時点情報管理装置ＰＯＳが収納された第３の収納室３３とを備えている。本実施の形態では、後に詳しく説明するように第２の部品収納室３１は防水構造を有しているが、第３の部品収納室３３は特に防水構造を有していない。 A partition 25 having a vapor barrier function is disposed on the first component storage chamber 17. On the partition 25, a control circuit including a motor power circuit (not shown), a display 27, and a display drive A second component storage chamber 31 in which a display device 29 including a circuit is stored and a third storage chamber 33 in which a point-of-sale information management device POS is stored are provided. In the present embodiment, as will be described in detail later, the second component storage chamber 31 has a waterproof structure, but the third component storage chamber 33 does not have a waterproof structure.

図１（Ｄ）に示すように、第２の部品収納室３１内に収納された制御回路と３台のモータ２１は、それぞれ接続用電気ケーブル３５によって接続されている。図１（Ｄ）においては、簡略的に接続用電気ケーブル３５を図示しているが、３台のモータ２１には３本の接続用電気ケーブル３５を介して電力が供給される。接続用電気ケーブル３５は、モータ２１から延びる第１の電気ケーブル３５Ａ［図２（Ａ）及び（Ｃ）］と第２の部品収納室３１から出て第１の部品収納室１７内に延びる第２の電気ケーブル３５Ｂと、第１の部品収納室１７内に配置されて第１の電気ケーブル３５Ａと第２の電気ケーブル３５Ｂとを接続する防水構造及び防爆構造を有するコネクタ３７とから構成する。 As shown in FIG. 1 (D), the control circuit and the three motors 21 housed in the second component housing chamber 31 are connected to each other by a connecting electric cable 35. In FIG. 1D, the connection electric cable 35 is illustrated in a simplified manner, but power is supplied to the three motors 21 via the three connection electric cables 35. The connecting electrical cable 35 is connected to the first electrical cable 35 </ b> A [FIGS. 2A and 2C] extending from the motor 21, and the first electrical cable 35 A extending from the second component storage chamber 31 into the first component storage chamber 17. And a connector 37 having a waterproof structure and an explosion-proof structure that is disposed in the first component storage chamber 17 and connects the first electric cable 35A and the second electric cable 35B.

図２（Ａ）乃至（Ｃ）は、ポンプ１９の上にモータ２１が装着された状態の側面図、正面図及び背面図を示している。図２（Ａ）及び（Ｃ）に示すように、コネクタ３７は、第１の電気ケーブル３５Ａに接続された第１のコネクタ部材３７Ａと、第２の電気ケーブル３５Ｂに接続された第２のコネクタ部材３７Ｂとから構成される。第２のコネクタ部材３７Ｂの結合側端部の外周には、雄ネジ部が形成されている。また第１のコネクタ部材３７Ａの結合側端部には回転可能に締め付け用リング部材３７Ｃが嵌合されている。リング部材３７Ｃの内周には、第２のコネクタ部材３７Ｂの雄ネジ部に螺合される雌ネジ部が形成されている。第１のコネクタ部材３７Ａを第２のコネクタ部材３７Ｂに結合させた後、リング部材３７Ｃを回して締め付けることにより、第１のコネクタ部材３７Ａと第２のコネクタ部材３７Ｂとの間に防水防爆構造が構成される。 2A to 2C show a side view, a front view, and a rear view in a state where the motor 21 is mounted on the pump 19. As shown in FIGS. 2A and 2C, the connector 37 includes a first connector member 37A connected to the first electric cable 35A and a second connector connected to the second electric cable 35B. It is comprised from the member 37B. A male screw portion is formed on the outer periphery of the coupling-side end portion of the second connector member 37B. A tightening ring member 37C is rotatably fitted to the coupling side end of the first connector member 37A. On the inner periphery of the ring member 37C, a female screw portion that is screwed into the male screw portion of the second connector member 37B is formed. After the first connector member 37A is coupled to the second connector member 37B, the ring member 37C is turned and tightened to provide a waterproof / explosion-proof structure between the first connector member 37A and the second connector member 37B. Composed.

なお図２（Ａ）及び（Ｃ）においては、第１の電気ケーブル３５Ａは一部図示を省略してある。第１のコネクタ部材３７Ａと第２のコネクタ部材３７Ｂとは、差し込み動作と引き抜き動作だけで、工具を使用せずに接続及び分離が可能な構造を有している。本実施の形態では、コネクタ３７の第２のコネクタ部材３７Ｂは、第１のコネクタ部材３７Ａが上側に位置する姿勢でモータ固定台３９に固定されている。このようにすれば、第１のコネクタ部材３７Ａの接続及び分離作業を楽な姿勢で行える上、モータ２１の交換作業中に第２のコネクタ部材３７Ｂが落下して破損することを防止できる。 2A and 2C, the first electric cable 35A is partially omitted. The first connector member 37A and the second connector member 37B have a structure that can be connected and disconnected without using a tool by only an insertion operation and an extraction operation. In the present embodiment, the second connector member 37B of the connector 37 is fixed to the motor fixing base 39 so that the first connector member 37A is positioned on the upper side. In this way, it is possible to connect and disconnect the first connector member 37A in an easy posture, and it is possible to prevent the second connector member 37B from being dropped and damaged during the motor 21 replacement operation.

図２（Ａ）乃至（Ｃ）に示すように、モータ２１は、工具を使用せずに取り外しが可能な取付構造４１を用いて第１の部品収納室１７内に固定されている。モータ２１の配置場所は任意であるが、本実施の形態では、ポンプ１９の上にモータ固定台３９を固定し、モータ２１はモータ固定台３９に取り付けられた取付構造４１を用いて、モータ固定台３９に固定されている。このようにするとモータ２１がポンプ１９の上にあるため、モータの交換作業が容易である上、交換作業の際に取付構造が落下したり紛失したりすることを防止できる。 As shown in FIGS. 2A to 2C, the motor 21 is fixed in the first component storage chamber 17 by using a mounting structure 41 that can be removed without using a tool. The motor 21 can be arranged at any location, but in this embodiment, the motor fixing base 39 is fixed on the pump 19, and the motor 21 is fixed to the motor by using an attachment structure 41 attached to the motor fixing base 39. It is fixed to the base 39. In this way, since the motor 21 is on the pump 19, it is easy to replace the motor, and it is possible to prevent the mounting structure from dropping or being lost during the replacement operation.

取付構造４１は、工具を用いることなくモータ２１を交換できるものであれば、どのような構造でもよい。そこで本実施の形態では、取付構造４１の一部をモータ固定台３９に固定されたベルト取付部４３［図２（Ａ）］と、モータ２１を間に介してベルト取付部４３と対向する位置にモータ固定台３９に固定されたアジャスト・ファスナ取付部４５と、アジャスト・ファスナ取付部４５に取り付けられたアジャスト・ファスナ本体４７と、ベルト取付部４３に一端が取り付けられ、他端にアジャスト・ファスナ用フック４９が取り付けられてモータ２１をモータ固定台３９に向かって押し付けるベルト５１とから構成している。本実施の形態では、アジャスト・ファスナ本体４７としては、アジャスト・ファスナ用フック４９と係合するフック係合部４７Ａと、手動でセット操作されるとフック係合部４７Ａを介してアジャスト・ファスナ用フック４９に引っ張り力を与え、手動で解除操作されると引っ張り力の付与を解除する操作レバー４７Ｂを含む操作機構とを備えている。操作レバー４７Ｂを上に上げるとフック係合部４７Ａがフリーになってロック解除状態となり、操作レバー４７Ｂを下に下げるとフック係合部４７Ａが引きつけられてロック状態となる。このような構造の取付構造４１であれば、モータ２１を押さえ付ける位置にベルト５１を配置し、アジャスト・ファスナ用フック４９をアジャスト・ファスナ本体４７のフック係合部４７Ａに係止させて操作レバー４７Ｂを下に下げる操作することにより、簡単にモータ２１をモータ固定台３９に取り付けることができる。またモータ２１を取り外す際には、アジャスト・ファスナ本体４７の操作レバー４７Ｂを上に上げる操作をすることにより簡単にモータ２１をモータ固定台３９外すことができる。この取付構造４１では、構成部品がモータ固定台３９から落下することがないので、専門家以外の者が作業する場合でも、取付構造４１の構成部品が交換作業中に紛失してしまうことを防止できる。 The attachment structure 41 may be any structure as long as the motor 21 can be replaced without using a tool. Therefore, in the present embodiment, the belt mounting portion 43 [FIG. 2A] in which a part of the mounting structure 41 is fixed to the motor fixing base 39 and the position facing the belt mounting portion 43 with the motor 21 interposed therebetween. One end is attached to the adjustment / fastener mounting portion 45 fixed to the motor fixing base 39, the adjustment / fastener main body 47 attached to the adjustment / fastener attachment portion 45, and the belt attachment portion 43, and the other end is adjusted / fastener. A hook 51 is attached and the belt 51 presses the motor 21 toward the motor fixing base 39. In the present embodiment, the adjust fastener main body 47 includes a hook engaging portion 47A that engages with the adjust fastener hook 49, and an adjust fastener for the adjust fastener via the hook engaging portion 47A when manually set. An operation mechanism including an operation lever 47B that applies a pulling force to the hook 49 and cancels the application of the pulling force when manually released is provided. When the operating lever 47B is raised upward, the hook engaging portion 47A becomes free and unlocked, and when the operating lever 47B is lowered downward, the hook engaging portion 47A is attracted and locked. In the mounting structure 41 having such a structure, the belt 51 is disposed at a position where the motor 21 is pressed, and the adjustment / fastener hook 49 is locked to the hook engagement portion 47A of the adjustment / fastener main body 47 to operate the operation lever. By performing the operation of lowering 47B downward, the motor 21 can be easily attached to the motor fixing base 39. When the motor 21 is removed, the motor 21 can be easily removed from the motor fixing base 39 by raising the operation lever 47B of the adjuster / fastener body 47. In this mounting structure 41, since the component parts do not fall from the motor fixing base 39, even when a person other than an expert works, the component parts of the mounting structure 41 are prevented from being lost during the replacement work. it can.

ベルト５１だけでモータ２１を固定した場合、モータ２１とモータ固定台３９とが並ぶ方向（上下方向）へのモータ２１の動きは規制できる。しかし、上下方向と直交する直交方向（水平方向）へのモータ２１の動きを規制することができない。そのため外部から加わる振動で、モータ２１が直交方向（水平方向）へ移動する可能性がある。そこで本実施の形態では、取付構造４１は、モータ２１の取付用ベース２１Ａに設けられた係合部としての図示しない複数の嵌合穴（本実施の形態では貫通孔）と、モータ固定台３９に設けられてモータ２１の係合部としての図示しない複数の嵌合穴と係合する被係合部としての複数のピン５３［図２（Ｂ）及び（Ｃ）］を更に備えている。図示していないが、本実施の形態はピン５３は４本設けられており、モータ２１の取付用ベース２１Ａには４つの嵌合孔が形成されている。この係合部（図示しない複数の嵌合穴）と被係合部（ピン５３）とは、モータ２１をポンプ１９に向かって上から近づけるときに係合状態となり、モータ２１を上に向かって挙げてポンプ１９から離すときに非係合状態になる係合構造を構成している。このような係合構造を有する係合部（図示しない複数の嵌合穴）と被係合部（ピン５３）とを取付構造４１に付加すると、外部からどの方向の振動が加わっても、モータ２１が移動することを簡単な構造で阻止することができる。なお係合部をピンから構成し、被係合部を穴から構成してもよい。 When the motor 21 is fixed only by the belt 51, the movement of the motor 21 in the direction (vertical direction) in which the motor 21 and the motor fixing base 39 are arranged can be restricted. However, the movement of the motor 21 in the orthogonal direction (horizontal direction) orthogonal to the vertical direction cannot be restricted. Therefore, there is a possibility that the motor 21 moves in the orthogonal direction (horizontal direction) due to vibration applied from the outside. Therefore, in the present embodiment, the mounting structure 41 includes a plurality of fitting holes (not shown) (through holes in the present embodiment) as engaging portions provided in the mounting base 21 </ b> A of the motor 21, and the motor fixing base 39. And a plurality of pins 53 (FIGS. 2B and 2C) as engaging portions that engage with a plurality of fitting holes (not shown) as engaging portions of the motor 21. Although not shown in the drawings, in this embodiment, four pins 53 are provided, and four fitting holes are formed in the mounting base 21 </ b> A of the motor 21. The engaging portion (a plurality of fitting holes (not shown)) and the engaged portion (pin 53) are engaged when the motor 21 approaches the pump 19 from above, and the motor 21 faces upward. For example, an engagement structure that is in a non-engagement state when separated from the pump 19 is configured. When an engaging portion (a plurality of fitting holes not shown) having such an engaging structure and an engaged portion (pin 53) are added to the mounting structure 41, the motor can be driven in any direction from the outside. The movement of 21 can be prevented with a simple structure. The engaging portion may be constituted by a pin, and the engaged portion may be constituted by a hole.

本実施の形態では、アジャスト・ファスナ（４７，４９）及びベルト５１と、複数のピン５３及び複数の嵌合穴とにより取付構造を構成している。しかし取付構造はこの構成に限定されるものではなく、アジャスト・ファスナ（４７，４９）及びベルト５１を用いずに、モータ２１の取付用ベース２１Ａに設けた複数の嵌合穴を複数の貫通穴により構成し、さらにモータ固定台３９に設けた複数のピン５３を複数のネジ付きピンにより構成し、複数の貫通穴から突出した複数のネジ付きピンのネジ部に手作業で回すことができる複数の手回しナット部材を螺合させる構造により取付構造を構成してもよいのは勿論である。 In this embodiment, the adjustment fastener (47, 49), the belt 51, the plurality of pins 53, and the plurality of fitting holes constitute an attachment structure. However, the mounting structure is not limited to this configuration, and a plurality of fitting holes provided in the mounting base 21A of the motor 21 without using the adjust fasteners (47, 49) and the belt 51 are formed into a plurality of through holes. In addition, a plurality of pins 53 provided on the motor fixing base 39 are constituted by a plurality of threaded pins, and a plurality of pins can be manually turned to screw portions of the plurality of threaded pins protruding from the plurality of through holes. Of course, the mounting structure may be constituted by a structure in which the hand-cranked nut member is screwed together.

本実施の形態では、ポンプ１９が、内部に空気分離装置で分離された空気を溜めるサンプ室５５［図２（Ａ）］を有している。そこでサンプ室５５の空気を外部に放出する空気放出路に、ポンプが水に浸かったときに、サンプ室５５に水が入ることを阻止するために、フロート・バルブ５７を設けている。フロート・バルブ５７の内部構造は、図３に示す通りであり、ケース５９の内部のバルブ収納室６１に弁体６３を備えたフロート６５を備えている。バルブ収納室６１内に下から水が浸入すると、フロート６５が上に移動して弁体６３が弁座６７と密着し、空気放出路が閉じられる。水が浸入していないときには、フロート６５が重力で下に移動する。ストッパ６９はフロートと接触した状態では空気放出路を閉じないように構造が定められている。フロート・バルブ５７の一方のポート７１は、パイプ７５を介してサンプ室５５の吐き出し口に接続されている。フロート・バルブ５７の他方のポート７３は、下に向かって延びるパイプ７７に接続されている。このような構造を採用すると、既存のポンプ１９にフロート・バルブ５７を追加するだけで簡単な構造で防水構造にすることができる。したがって費用をかけずに、ポンプの防水化を図ることができる。本実施の形態では、フロート・バルブ５７は、モータ固定台３９に固定される。したがってフロート・バルブ５７の設置が容易になる上、浸水した場合にフロート・バルブ５７が水で浮動して破損することを防止できる。 In the present embodiment, the pump 19 has a sump chamber 55 [FIG. 2A] in which air separated by an air separation device is stored. Therefore, a float valve 57 is provided to prevent water from entering the sump chamber 55 when the pump is immersed in water in the air discharge path for releasing the air in the sump chamber 55 to the outside. The internal structure of the float valve 57 is as shown in FIG. 3, and a float 65 including a valve body 63 is provided in a valve storage chamber 61 inside the case 59. When water enters the valve storage chamber 61 from below, the float 65 moves upward, the valve body 63 comes into close contact with the valve seat 67, and the air discharge path is closed. When the water is not entering, the float 65 moves downward due to gravity. The structure of the stopper 69 is determined so as not to close the air discharge path when in contact with the float. One port 71 of the float valve 57 is connected to the discharge port of the sump chamber 55 via a pipe 75. The other port 73 of the float valve 57 is connected to a pipe 77 extending downward. By adopting such a structure, it is possible to make a waterproof structure with a simple structure simply by adding the float valve 57 to the existing pump 19. Therefore, the pump can be waterproofed without cost. In the present embodiment, the float valve 57 is fixed to the motor fixing base 39. Accordingly, the float valve 57 can be easily installed, and the float valve 57 can be prevented from floating and being damaged by water when it is submerged.

第２の部品収納室３１の防水構造は、図４に示すように、正面及び背面（背面は正面と同様の取付構造のため図示せず）が開口したハウジング７９の開口部を蓋部材８１で密閉した構造を有している。蓋部材８１には、表示部２７を覆うアクリル製の透明板８３が接着材料を間に介して液密に固定されている。蓋部材８１とハウジング７９との間にはオーリング８５が配置されている。蓋部材８１の前方にはカバー部材８４が固定されている。カバー部材８４には、透明板８３に対向する位置に、アクリル製の透明窓部材８６が配置されている。透明板８３と透明窓部材８６との間には、透明窓部材８６を通してカバー部材８４の内部を覗くことができないようにする目隠し用の枠体８８が配置されている。また信号線及び動力線Ｌは、ハウジング７９に固定された防水コネクタ８７を介して第２の部品収納室３１に引き込まれている。このような構造であれば、第２の部品収納室３１を防水構造にしても、組み立ての際におけるケーブルの接続が容易になる。 As shown in FIG. 4, the waterproof structure of the second component storage chamber 31 is formed by using a lid member 81 to open an opening of a housing 79 whose front and back surfaces (the back surface is not shown because of the same mounting structure as the front surface). It has a sealed structure. An acrylic transparent plate 83 that covers the display unit 27 is fixed to the lid member 81 in a liquid-tight manner with an adhesive material in between. An O-ring 85 is disposed between the lid member 81 and the housing 79. A cover member 84 is fixed in front of the lid member 81. An acrylic transparent window member 86 is disposed on the cover member 84 at a position facing the transparent plate 83. A blindfold frame body 88 is disposed between the transparent plate 83 and the transparent window member 86 so that the inside of the cover member 84 cannot be seen through the transparent window member 86. The signal line and the power line L are drawn into the second component storage chamber 31 via a waterproof connector 87 fixed to the housing 79. With such a structure, even if the second component storage chamber 31 is made waterproof, it is easy to connect the cables during assembly.

販売時点情報管理装置ＰＯＳが収納される第３の収納室３３は、防水構造を有しない。したがって計量機が浸水すると、販売時点情報管理装置ＰＯＳは交換が必要になる。しかし販売時点情報管理装置ＰＯＳは、計量機１の売り上げ管理に使用するものであって、計量機１の運転動作には本来的に必要なものではない。したがって販売時点情報管理装置ＰＯＳについては早急に交換する必要がない。そこで本実施の形態では、第３の収納室３３を防水構造を有しない構造として、浸水に早期に復旧対応できる計量機の価格上昇を抑えている。 The third storage chamber 33 in which the point-of-sale information management device POS is stored does not have a waterproof structure. Therefore, when the weighing machine is submerged, the point-of-sale information management device POS needs to be replaced. However, the point-of-sale information management device POS is used for sales management of the weighing machine 1 and is not essential for the operation of the weighing machine 1. Therefore, it is not necessary to replace the point-of-sale information management device POS immediately. Therefore, in the present embodiment, the third storage chamber 33 has a structure that does not have a waterproof structure, thereby suppressing an increase in the price of a weighing machine that can quickly recover from flooding.

本実施の形態によれば、コネクタ３７を用いてモータ２１から延びる第１の電気ケーブル３５Ａを第２の電気ケーブル３５Ｂと接続しているので、コネクタ３７の接続を解除すれば、工具を使用しなくても、モータ２１と一緒に第１の電気ケーブル３５Ａを簡単に取り外すことができる。したがって第１の電気ケーブル３５Ａと第１のコネクタ部材３７Ａが接続されたモータ２１にドライブプーリ２２を取り付け、計量機の設置場所に予め用意しておけば、専門家でなくても、その場でモータと一緒に第１の電気ケーブル及び第１のコネクタ部材を交換することにより、計量機を動作可能な状態に復旧できる。 According to the present embodiment, since the first electric cable 35A extending from the motor 21 is connected to the second electric cable 35B using the connector 37, a tool is used if the connection of the connector 37 is released. Even if not, the first electric cable 35 </ b> A can be easily removed together with the motor 21. Therefore, if the drive pulley 22 is attached to the motor 21 to which the first electrical cable 35A and the first connector member 37A are connected, and prepared in advance at the place where the weighing machine is installed, even a non-expert will be able to perform on the spot. By exchanging the first electric cable and the first connector member together with the motor, the weighing machine can be restored to an operable state.

本発明によれば、モータを、工具を使用せずに取り外しが可能な取付構造を用いて第１の部品収納室内に固定しており、また接続用電気ケーブルを、モータから延びる第１の電気ケーブルと第２の部品収納室から出て第１の部品収納室内に延びる第２の電気ケーブルと、第１の部品収納室内に配置されて第１の電気ケーブルと第２の電気ケーブルとを接続する防水構造及び防爆構造を有するコネクタとから構成し、更に制御回路及び表示装置が収納された第２の部品収納室を防水構造としているので、コネクタで接続可能な第１の電気ケーブルが接続されたモータにドライブプーリを取り付け、計量機の設置場所に予め用意しておけば、専門家でなくても、工具を用いることなく、その場でモータと一緒に第１の電気ケーブルを交換することにより、計量機を動作可能な状態に復旧できる。 According to the present invention, the motor is fixed in the first component storage chamber using a mounting structure that can be removed without using a tool, and the connecting electric cable is connected to the first electric cable extending from the motor. A cable, a second electric cable extending from the second component storage chamber and extending into the first component storage chamber, and the first electric cable and the second electric cable arranged in the first component storage chamber are connected to each other. Since the second component storage chamber containing the control circuit and the display device has a waterproof structure, the first electric cable that can be connected with the connector is connected. If you attach a drive pulley to the motor and prepare it in advance at the place where the weighing machine is installed, even if you are not an expert, you can replace the first electric cable with the motor on the spot without using tools. More, can be restored to an operable state a weighing machine.

１計量機
３筐体
３Ａ天板部
３Ｂ，３Ｃ側壁部
５下側パネル
７ノズル掛け
９ノズル
１１ホース
１３ホース接続部
１５供給管
１７第１の部品収納室
１９ポンプ
２０被ドライブプーリ
２１モータ
２１Ａ取付用ベース
２２ドライブプーリ
２３流量計
２４ベルト
２５隔壁部
２７表示部
２９表示装置
３１第２の部品収納室
３３第３の部品収納室
３５接続用電気ケーブル
３５Ａ第１の電気ケーブル
３５Ｂ第２の電気ケーブル
３７コネクタ
３７Ａ第１のコネクタ部材
３７Ｂ第２のコネクタ部材
３７Ｃリング部材
３９モータ固定台
４１取付構造
４３ベルト取付部
４５アジャスト・ファスナ取付部
４７アジャスト・ファスナ本体
４７Ａフック係合部
４７Ｂ操作レバー
４９アジャスト・ファスナ用フック
５１ベルト
５３ピン
５５サンプ室
５７フロート・バルブ
５９ケース
６１バルブ収納室
６３弁体
６５フロート
６７弁座
６９ストッパ
７１ポート
７３ポート
７５パイプ
７７パイプ
７９ハウジング
８１蓋部材
８３透明板
８４カバー部材
８５オーリング
８６透明窓部材
８７防水コネクタ
８８枠体
ＰＯＳ販売時点情報管理装置 DESCRIPTION OF SYMBOLS 1 Weighing machine 3 Housing | casing 3A Top plate part 3B, 3C Side wall part 5 Lower panel 7 Nozzle hook 9 Nozzle 11 Hose 13 Hose connection part 15 Supply pipe 17 1st components storage chamber 19 Pump 20 Drive pulley 21 Motor 21A Installation Base 22 Drive pulley 23 Flow meter 24 Belt 25 Bulkhead portion 27 Display portion 29 Display device 31 Second component storage chamber 33 Third component storage chamber 35 Electrical cable for connection 35A First electrical cable 35B Second electrical cable 37 Connector 37A First connector member 37B Second connector member 37C Ring member 39 Motor fixing base 41 Mounting structure 43 Belt mounting portion 45 Adjust / fastener mounting portion 47 Adjust / fastener main body 47A Hook engagement portion 47B Operation lever 49 Adjust / Fastener hook 51 belt 53 pin 55 sump 57 Float valve 59 Case 61 Valve housing chamber 63 Valve body 65 Float 67 Valve seat 69 Stopper 71 Port 73 Port 75 Pipe 77 Pipe 79 Housing 81 Cover member 83 Transparent plate 84 Cover member 85 O-ring 86 Transparent window member 87 Waterproof connector 88 Frame POS point-of-sale information management device

Claims

A housing in which at least a pump, a motor for driving the pump, and a flow meter are accommodated, and a control circuit and a display device including at least a power circuit for the motor are accommodated in the housing. A weighing machine comprising a parts storage chamber, wherein the motor and the control circuit are connected by an electric cable for connection,
The pump has a waterproof structure and an explosion-proof structure in which water does not enter even when immersed in water,
The flow meter has a waterproof structure and an explosion-proof structure,
The motor has an explosion-proof structure but does not have a waterproof structure, and is fixed in the first component storage chamber using an attachment structure that can be removed without using a tool.
The connection electric cable includes a first electric cable extending from the motor, a second electric cable extending from the second component storage chamber and extending into the first component storage chamber, and the first component storage chamber. And a connector having a waterproof structure and an explosion-proof structure for connecting the first electric cable and the second electric cable.
The second component storage chamber has a waterproof structure,
The housing further includes a third storage chamber that does not have a waterproof structure in which the point-of-sale information management device is stored,
The connector comprises a first connector member connected to the first electric cable and a second connector member connected to the second electric cable;
The first connector member and the second connector member have a structure that can be connected and disconnected without using a tool,
A motor fixing base is fixed on the pump,
The motor is fixed using the mounting structure attached to the motor fixing base,
The mounting structure includes a belt mounting portion fixed to the motor fixing base, an adjustment / fastener mounting portion fixed to the motor fixing base at a position facing the belt mounting portion with the motor interposed therebetween, An adjustment fastener main body attached to an adjustment fastener attaching portion; a belt having one end attached to the belt attaching portion and an adjustment fastener hook attached to the other end; and a belt for pressing the motor toward the motor fixing base; Consists of
The pump has a sump chamber in which air separated by an air separation device is stored.
The air discharge path for releasing the air in the sump chamber to the outside is provided with a float valve that prevents water from entering the sump chamber when the pump is immersed in water.
The float valve is fixed to the motor fixing base,
The waterproof structure of the second component storage chamber is provided with a waterproof connector for preventing water from entering the second component storage chamber via a signal line and a power line drawn into the second component storage chamber. weighing machine characterized in that it comprises.

A housing in which at least a pump, a motor for driving the pump, and a flow meter are accommodated, and a control circuit and a display device including at least a power circuit for the motor are accommodated in the housing. A weighing machine comprising a parts storage chamber, wherein the motor and the control circuit are connected by an electric cable for connection,
The pump has a waterproof structure and an explosion-proof structure in which water does not enter even when immersed in water,
The flow meter has a waterproof structure and an explosion-proof structure,
The motor has an explosion-proof structure but does not have a waterproof structure, and is fixed in the first component storage chamber using an attachment structure that can be removed without using a tool.
The connection electric cable includes a first electric cable extending from the motor, a second electric cable extending from the second component storage chamber and extending into the first component storage chamber, and the first component storage chamber. And a connector having a waterproof structure and an explosion-proof structure for connecting the first electric cable and the second electric cable.
The weighing machine, wherein the second component storage chamber has a waterproof structure.

The weighing machine according to claim 2 , wherein the housing further includes a third storage chamber that does not have a waterproof structure in which the point-of-sale information management device is stored.

The connector comprises a first connector member connected to the first electric cable and a second connector member connected to the second electric cable;
The weighing machine according to claim 2 or 3 , wherein the first connector member and the second connector member have a structure that can be connected and disconnected without using a tool.

A motor fixing base is fixed on the pump,
The weighing machine according to claim 2 or 3 , wherein the motor is fixed using the attachment structure attached to the motor fixing base.

A motor fixing base is fixed on the pump,
The motor is fixed using the mounting structure attached to the motor fixing base,
The weighing machine according to claim 4 , wherein the second connector member is fixed to the motor fixing base in a posture in which the first connector member is positioned on the upper side.

The mounting structure is
A belt mounting portion fixed to the motor fixing base, an adjustment / fastener mounting portion fixed to the motor fixing base at a position facing the belt mounting portion with the motor interposed therebetween, and the adjustment / fastener mounting portion And a belt for pressing the motor toward the motor fixing base with one end attached to the belt attaching portion and an adjustment fastener hook attached to the other end. The weighing machine according to claim 5 .

The adjustment fastener main body is provided with a hook engaging portion that engages with the adjustment fastener hook, and when the manual setting operation is performed, the adjustment fastener main body applies a pulling force to the adjustment fastener hook via the hook engagement portion, The weighing machine according to claim 7 , further comprising an operation mechanism that releases the engagement between the hook engaging portion and the adjustment / fastener hook when the manual release operation is performed.

The mounting structure is
An engaging portion provided on the mounting base of the motor;
An engagement portion provided on the motor fixing base and engaged with an engagement portion of the motor;
The engaging portion and the engaged portion have an engaging structure that is engaged when the motor is brought close to the pump and is disengaged when the motor is separated from the pump. The weighing machine according to claim 5 .

10. The weighing machine according to claim 9 , wherein the engaging portion includes one of a plurality of holes and a plurality of pins, and the engaged portion includes the other of the plurality of holes and the plurality of pins.

The pump has a sump chamber in which air separated by an air separation device is stored.
The air discharge passage for releasing the air in the sump chamber to the outside, when the pump is submerged, the sump chamber claims 2 to 10 float valve is provided for preventing the water from entering the The weighing machine according to any one of the above.

The weighing machine according to claim 11 , wherein the float valve is fixed to the motor fixing base.

The waterproof structure of the second component storage chamber is provided with a waterproof connector for preventing water from entering the second component storage chamber via a signal line and a power line drawn into the second component storage chamber. The weighing machine according to any one of claims 2 to 12 , further comprising:

The mounting structure is
A plurality of through holes provided in the mounting base of the motor;
A plurality of threaded pins provided on the motor fixing base and passing through the plurality of through holes;
3. A plurality of hand-operated nut members inserted into the plurality of through-holes and screwed into screw portions of the plurality of threaded pins projecting from the plurality of through-holes and capable of being manually rotated. The described weighing machine.