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JPS6122156B2 - - Google Patents

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Publication number
JPS6122156B2
JPS6122156B2JP2546784AJP2546784AJPS6122156B2JP S6122156 B2JPS6122156 B2JP S6122156B2JP 2546784 AJP2546784 AJP 2546784AJP 2546784 AJP2546784 AJP 2546784AJP S6122156 B2JPS6122156 B2JP S6122156B2
Authority
JP
Japan
Prior art keywords
sensor
discharge tube
hole
discharge
discharge pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP2546784A
Other languages
Japanese (ja)
Other versions
JPS59162391A (en
Inventor
Eiichiro Hiraoka
Yasuzo Hatasaki
Kenichi Yamada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co LtdfiledCriticalMatsushita Electric Industrial Co Ltd
Priority to JP59025467ApriorityCriticalpatent/JPS59162391A/en
Publication of JPS59162391ApublicationCriticalpatent/JPS59162391A/en
Publication of JPS6122156B2publicationCriticalpatent/JPS6122156B2/ja
Grantedlegal-statusCriticalCurrent

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Description

Translated fromJapanese

【発明の詳細な説明】産業上の利用分野 本発明は電動ポンプの液面検出装置に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a liquid level detection device for an electric pump.

従来例の構成とその問題点 一般に灯油等をタンクより機器に内蔵したタン
クに給油したり、その他、液体を移送するポンプ
で電池などを電源とし、電動ポンプを駆動するも
のが開発されてきた。さらにこの種の電動ポンプ
において、液体の吐出口部に液面センサーを取付
け、所定の液位になつたときこれを検出し、前記
電動ポンプの運転を自動的に停止させるものが考
えられてきている。
Conventional configurations and their problems In general, pumps have been developed that supply kerosene or the like from a tank to a tank built into the equipment, or that use a battery or other source as a power source to drive an electric pump for pumps that transfer liquids. Furthermore, in this type of electric pump, it has been considered that a liquid level sensor is attached to the liquid discharge port to detect when the liquid level reaches a predetermined level and automatically stop the operation of the electric pump. There is.

ところでこれまでの液面検出装置は第4図およ
び第5図に示すように、流下する液体がセンサー
22に触れないように吐出管23の先端部の側部
を半欠してこの半欠部24にセンサー22を取付
け、しかるのちにカバー25をねじ26で取付け
ていたものである。なお、センサー22は下部に
プリズム部をもち、内部に前記プリズム部に投射
する発光素子と、その反射光を受光する受光素子
を内蔵し、液面がプリズム部に接したときに前記
光の透過があつて信号を得られるようにしてい
る。また、カバー25は吐出した液体飛沫がセン
サー22のプリズム部に付着してセンサー22が
誤動作するのを防ぐ役目をなし、上下2段の孔2
6′,26″は液位が上昇したとき、下方の孔2
6″より流入してセンサー22に液体を接触させ
るためのものであり、上方の孔26′はカバー2
5内の空気を逃がすためのものである。
By the way, as shown in FIGS. 4 and 5, conventional liquid level detection devices have a half-cut side of the distal end of the discharge pipe 23 to prevent the flowing liquid from touching the sensor 22. The sensor 22 was attached to the cover 24, and then the cover 25 was attached with screws 26. The sensor 22 has a prism section at the bottom, and has a built-in light emitting element that projects the light onto the prism section and a light receiving element that receives the reflected light.When the liquid surface comes into contact with the prism section, the light is transmitted. This makes it possible to obtain a signal. Further, the cover 25 serves to prevent the ejected liquid droplets from adhering to the prism portion of the sensor 22 and malfunctioning of the sensor 22, and prevents the sensor 22 from malfunctioning.
6', 26'' are the lower holes 2 when the liquid level rises.
6'' to bring the liquid into contact with the sensor 22, and the upper hole 26' is for the liquid to come in contact with the sensor 22.
This is to release the air inside the chamber.

このような液面検出装置はセンサー22のリー
ド線28を吐出管23の壁面の孔29より導出す
ることから、リード線8の引き出しが面倒であ
り、またンサー22の取付けのためのリブ30、
さらにカバー25、ビス26等を必要として部品
点数が多くなり、製造ならびに組み立てが容易で
ない。
In such a liquid level detection device, the lead wire 28 of the sensor 22 is led out from the hole 29 in the wall of the discharge pipe 23, so it is troublesome to draw out the lead wire 8, and the rib 30 for mounting the sensor 22,
Furthermore, the cover 25, screws 26, etc. are required, which increases the number of parts, making it difficult to manufacture and assemble.

発明の目的 本発明は上記従来の問題点を解消するもので、
組み立てが容易で、かつコスト的にも安価にして
得られる電動ポンプの液面検出装置を提供するこ
とを目的とする。
Purpose of the invention The present invention solves the above-mentioned conventional problems.
It is an object of the present invention to provide a liquid level detection device for an electric pump that is easy to assemble and can be obtained at low cost.

発明の構成 上記目的を達成するために本発明は、センサー
ケースを吐出管先端キヤツプの遮蔽板上の内部一
側に、その液体流入孔と空気抜き孔が吐出管先端
キヤツプの側部の孔に対応するように収め、前記
吐出管先端キヤツプを吐出管の先端にはめ合わせ
て結合したもので、この構成によれば、吐出管先
端キヤツプを吐出管の先端にはめ合わせることに
よりセンサーケースが位置固定されるため、その
組み立ては容易となり、かつ部品点数も少ないた
め、コスト的にも安価に得ることができるもので
ある。
Structure of the Invention In order to achieve the above object, the present invention provides a sensor case on one side of the inside of the shielding plate of the discharge pipe tip cap, and its liquid inflow hole and air vent hole correspond to the holes on the side of the discharge pipe tip cap. According to this configuration, the sensor case is fixed in position by fitting the discharge tube tip cap to the tip of the discharge tube. Therefore, it is easy to assemble, and the number of parts is small, so it can be obtained at low cost.

実施例の説明 以下、本発明の一実施例を第1図〜第3図にも
とづいて説明する。
DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

図において、1は把手管筒体、2は本体ケース
1′の下部に設けられた吸液管、3は同じく本体
ケース1′の下部に設けられ、かつ前記吸液管2
と連通する吐出管である。前記把手部筒体1内に
は電池4が、また本体ケース1′内には電子部品
回路装置5が内蔵され、かつ吸液管2の先端には
電動ポンプ部6が設けられ、さらに吐出管3の先
端部には液面検出部7が設けられている。そして
液面検出部7で液面を検出したとき、その信号に
より電子部品回路装置5によつて電動ポンプ部6
の運転を自動的に停止するようになつている。
In the figure, 1 is a handle tube barrel, 2 is a liquid suction pipe provided at the lower part of the main body case 1', and 3 is also provided at the lower part of the main body case 1', and the liquid suction pipe 2
This is a discharge pipe that communicates with the A battery 4 is built into the handle cylinder 1, an electronic circuit device 5 is built into the main body case 1', and an electric pump part 6 is provided at the tip of the liquid suction pipe 2, and a discharge pipe. A liquid level detecting section 7 is provided at the tip of 3. When the liquid level is detected by the liquid level detecting section 7, the electric pump section 6 is activated by the electronic component circuit device 5 based on the signal.
The system is designed to automatically stop operation.

前記液面検出部7は第2図および第3図に示す
ように構成されている。すなわちセンサーケース
8は透明な合成樹脂よりなり、外形が吐出管先端
キヤツプ9の内部の一側に収まるように、たとえ
ば横断面半円形の筒状に形成され、かつ内部にセ
ンサー収納凹部10をもち、さらに収納凹部10
の下部に、下方に表出した錐形面をもつプリズム
部11を有している。またこのセンサーケース8
は一側の下部に液体流入孔12を有し、その上方
に空気抜き孔13を有している。さらに、このセ
ンサーケース8は上部の外側部に段部14を有し
ている。前記センサーケース8のセンサー収納凹
部10内にはセンサー15が封入され、リード線
16を導出している。このセンサー15はプリズ
ム部11に光を投射する発光素子と、その反射光
を受光素子よりなつている。吐出管先端キヤツプ
9はセンサーケース8の下部に対応する、たとえ
ば半円形の遮蔽板17をもち、したがつて吐出口
18は下端面積の半分となる形状である。またこ
の吐出管先端キヤツプ9の一側には、前記センサ
ーケース8の液体流入孔12および空気抜き孔1
3に対応する孔19,20を設けてある。なおこ
の孔19,20は一つの孔としてもよい。この吐
出管先端キヤツプ9は上部を吐出管3の先端の外
周にはめ合わして結合され、前記センサーケース
8は段部14が吐出管3の先端で押さえられるこ
とにより固定されている。なお、吐出管先端キヤ
ツプ9の内側には、センサーケース8の位置決め
をするためのリブ21を設けている。
The liquid level detection section 7 is constructed as shown in FIGS. 2 and 3. That is, the sensor case 8 is made of transparent synthetic resin, has a cylindrical shape with, for example, a semicircular cross section so that the outer shape fits inside one side of the discharge pipe tip cap 9, and has a sensor storage recess 10 inside. , and a storage recess 10
It has a prism part 11 with a conical surface exposed downward at the lower part thereof. Also this sensor case 8
has a liquid inlet hole 12 at the lower part of one side, and has an air vent hole 13 above it. Furthermore, this sensor case 8 has a stepped portion 14 on the outer side of the upper portion. A sensor 15 is enclosed in the sensor storage recess 10 of the sensor case 8, and a lead wire 16 is led out. This sensor 15 consists of a light emitting element that projects light onto the prism section 11 and a light receiving element that receives the reflected light. The discharge pipe tip cap 9 has a semicircular shielding plate 17, for example, corresponding to the lower part of the sensor case 8, and therefore the discharge port 18 has a shape that is half the area of the lower end. Further, on one side of this discharge pipe tip cap 9, a liquid inlet hole 12 and an air vent hole 1 of the sensor case 8 are provided.
Holes 19 and 20 corresponding to 3 are provided. Note that the holes 19 and 20 may be one hole. The discharge tube end cap 9 is connected by fitting the upper part to the outer periphery of the tip of the discharge tube 3, and the sensor case 8 is fixed by having the stepped portion 14 pressed by the tip of the discharge tube 3. Note that a rib 21 for positioning the sensor case 8 is provided inside the discharge pipe tip cap 9.

発明の効果 以上のように本発明の電動ポンプの液面検出装
置は、センサーケースを吐出口部内に設ける構造
としているため、吐出管そのものの形状を断面半
円形にする必要がなく、またリード線導出孔もな
いので、その配線が面倒になることはない。しか
もセンサーケース自体にセンサーを内蔵するた
め、センサーを固定するための手段も必要でな
く、また前記センサーケースは吐出管先端キヤツ
プを吐出管にはめ合わせることにより位置固定さ
れるので、その組み立ては容易となり、かつ部品
点数も少ないのでコスト的にも安価に得ることが
できるものである。
Effects of the Invention As described above, since the liquid level detection device for an electric pump of the present invention has a structure in which the sensor case is provided inside the discharge port, the shape of the discharge pipe itself does not need to be semicircular in cross section, and the lead wire Since there is no lead-out hole, wiring will not be troublesome. Furthermore, since the sensor is built into the sensor case itself, there is no need for any means to fix the sensor, and since the sensor case is fixed in position by fitting the discharge pipe tip cap onto the discharge pipe, assembly is easy. Moreover, since the number of parts is small, it can be obtained at a low cost.

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

第1図は本発明の一実施例における液面検出装
置を採用した電動ポンプの断側面図、第2図は同
液面検出装置部の断面図、第3図は同分解斜視
図、第4図は従来の液面検出装置部の断面図、第
5図は同分解斜視図である。 1……把手部筒体、1′……本体ケース、2…
…吸液管、3……吐出管、4……電池、5……電
子部品回路装置、6……電動ポンプ部、7……液
面検出部、8……センサーケース、9……吐出管
先端キヤツプ、10……センサー収納凹部、11
……プリズム部、12……液体流入孔、13……
空気抜き孔、14……段部、15……センサー、
16……リード線、17……遮蔽板、18……吐
出孔、19,20……孔。
FIG. 1 is a sectional side view of an electric pump employing a liquid level detection device according to an embodiment of the present invention, FIG. 2 is a sectional view of the same liquid level detection device, FIG. 3 is an exploded perspective view of the same, and FIG. The figure is a sectional view of a conventional liquid level detection device section, and FIG. 5 is an exploded perspective view of the same. 1...Handle cylinder body, 1'...Body case, 2...
...Liquid suction pipe, 3...Discharge pipe, 4...Battery, 5...Electronic component circuit device, 6...Electric pump section, 7...Liquid level detection section, 8...Sensor case, 9...Discharge pipe Tip cap, 10...Sensor storage recess, 11
... Prism part, 12 ... Liquid inflow hole, 13 ...
Air vent hole, 14... step, 15... sensor,
16... Lead wire, 17... Shielding plate, 18... Discharge hole, 19, 20... Hole.

Claims (1)

Translated fromJapanese
【特許請求の範囲】1 透明材料よりなり、かつ内部にセンサー収納
凹部をもち、このセンサー収納凹部の下部に表出
したプリズム部を有し、側部に液体流入孔と空気
抜き孔をもつセンサーケースと、前記センサー収
納凹部に封入されたセンサーと、下面のほぼ半分
にわたる遮蔽板をもち、他の半分を吐出口とし、
一側に孔をもつ吐出管先端キヤツプと、吐出管と
よりなり、前記センサーケースを吐出管先端キヤ
ツプの遮蔽板上の内部一側に、その液体流入孔と
空気抜き孔が吐出管先端キヤツプの側部の孔に対
応するように収め、前記吐出管先端キヤツプを吐
出管の先端にはめ合わせて結合してなる電動ポン
プの液面検出装置。2 センサーケースは上部を吐出管の先端により
押さえられたことを特徴とする特許請求の範囲第
1項記載の電動ポンプの液面検出装置。
[Scope of Claims] 1. A sensor case made of a transparent material and having a sensor storage recess inside, a prism portion exposed at the bottom of the sensor storage recess, and a liquid inflow hole and an air vent hole on the side. and a sensor sealed in the sensor housing recess, a shielding plate covering approximately half of the lower surface, and the other half serving as a discharge port;
It consists of a discharge pipe tip cap with a hole on one side and a discharge pipe, the sensor case is placed on one side of the inside of the discharge tube tip cap on the shielding plate, and the liquid inflow hole and air vent hole are on the side of the discharge tube tip cap. A liquid level detecting device for an electric pump, which is fitted in a hole in the discharge tube, and is connected to the discharge tube by fitting the discharge tube tip cap onto the discharge tube tip. 2. The liquid level detection device for an electric pump according to claim 1, wherein the upper part of the sensor case is held down by the tip of the discharge pipe.
JP59025467A1984-02-141984-02-14Liquid level detector for electric pumpGrantedJPS59162391A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP59025467AJPS59162391A (en)1984-02-141984-02-14Liquid level detector for electric pump

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP59025467AJPS59162391A (en)1984-02-141984-02-14Liquid level detector for electric pump

Publications (2)

Publication NumberPublication Date
JPS59162391A JPS59162391A (en)1984-09-13
JPS6122156B2true JPS6122156B2 (en)1986-05-30

Family

ID=12166828

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP59025467AGrantedJPS59162391A (en)1984-02-141984-02-14Liquid level detector for electric pump

Country Status (1)

CountryLink
JP (1)JPS59162391A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
KR20030091881A (en)*2003-11-112003-12-03구정조Fluid Detector Sensor Unit and Fluid Detector Sensor
JP5150157B2 (en)*2007-07-132013-02-20大陽日酸株式会社 Liquid level detection device for liquefied gas in cooling processing device

Also Published As

Publication numberPublication date
JPS59162391A (en)1984-09-13

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