JPH0599725A - Detector with plug - Google Patents
Detector with plugInfo
- Publication number
- JPH0599725A JPH0599725A JP25804491A JP25804491A JPH0599725A JP H0599725 A JPH0599725 A JP H0599725A JP 25804491 A JP25804491 A JP 25804491A JP 25804491 A JP25804491 A JP 25804491A JP H0599725 A JPH0599725 A JP H0599725A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- lead
- conductor
- detector
- case
- 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.)
- Pending
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、検出信号出力用の差し
込みプラグを有する差し込みプラグ付き検出器に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detector with a plug having a plug for outputting a detection signal.
【０００２】[0002]
【従来技術】実開昭５２−１００２１号公報は、各一端
がサ−ミスタの両端に個別に接続される導出導体対と、
この導出導体対の各他端が信号外部出力用ケ−ブルの導
線対に個別にはんだ付けされたサ−ミスタ式温度検出器
を開示している。2. Description of the Related Art Japanese Utility Model Publication No. 52-10021 discloses a pair of lead conductors, one end of which is individually connected to both ends of a thermistor.
Disclosed is a thermistor type temperature detector in which the other ends of the lead-out conductor pairs are individually soldered to the conductor pairs of the cable for external signal output.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記した
ような検出器の信号出力構造では、導出導体対と信号外
部出力用ケ−ブルの導線対とのはんだ付けが必要であ
り、更に通常ははんだ付け後にこのはんだ付け部分を絶
縁処理する必要がある。このような煩雑な処理は作業工
数及び費用の点で看過できない点であり、またはんだ付
け部の信頼性の点でも問題がある。However, in the signal output structure of the detector as described above, it is necessary to solder the lead-out conductor pair and the conductor wire pair of the signal external output cable, and usually the soldering is performed. It is necessary to insulate this soldered portion later. Such a complicated process cannot be overlooked in terms of work man-hours and costs, or there is a problem in reliability of the attachment part.
【０００４】本出願人はこれらの問題点を解消するため
には、検出器にいわゆる差し込み式接続器の雄側部品と
して知られる差し込みプラグを付設し、この差し込みプ
ラグの端子導体を検出器内部で導出導体に電気的に接続
すればよいことに気がついた。このようにすれば、必要
な長さの信号外部出力用ケ−ブルの一端に接続されたプ
ラグ受け（いわゆる差し込み式接続器の雌側部品であっ
てコンセントと通常呼ばれる）をこの差し込みプラグに
差し込むだけで接続を完了することができ、種々の点で
極めて使い勝手が良くなる。In order to solve these problems, the present applicant attaches a plug to the detector, which is known as a male part of a so-called plug-in connector, and the terminal conductor of this plug is provided inside the detector. I realized that it would be better to make an electrical connection to the lead-out conductor. In this way, a plug receiver (a female part of a so-called plug-in type connector, which is usually called an outlet) connected to one end of a signal external output cable having a required length is inserted into this plug. The connection can be completed only by itself, and it is extremely convenient in various points.
【０００５】しかしながらこの場合には信号外部出力用
ケ−ブルと検出器との電気接続は分離自由であるもの
の、差し込みプラグの端子導体いわゆるタ−ミナルと上
記導出導体とを電気的に接続せねばならないので、結
局、接続箇所が増加し、作業工数及び費用の低減の点で
効果的でないということが判明した。本発明は上記問題
点に鑑みなされたものであり、差し込み接続構造による
電気信号出力が可能であるとともに、構造が簡単で工数
の低減及び信頼性の向上が可能な差し込みプラグ付き検
出器を提供することをその目的としている。However, in this case, although the electrical connection between the signal external output cable and the detector is free, the terminal conductor of the insertion plug, so-called terminal, and the lead conductor must be electrically connected. As a result, it was found that the number of connection points was increased, which was not effective in terms of reduction of man-hours and cost. The present invention has been made in view of the above problems, and provides a detector with an insertion plug, which is capable of outputting an electric signal by an insertion connection structure, has a simple structure, and can reduce man-hours and improve reliability. That is the purpose.
【０００６】[0006]
【課題を解決するための手段】本発明の差し込みプラグ
付き検出器は、所定の状態量を検出して電気信号を出力
する検出部と、一端が前記検出部の信号出力端に接続さ
れ前記電気信号を導出する複数の導出導体と、前記各導
出導体を電気絶縁可能に支持する導体支持部と、一端部
が前記導出導体の他端に電気的に接続され他端部がプラ
グ受けに接続可能な差し込みプラグの刃部となっている
端子導体とを備える差し込みプラグ付き検出器におい
て、前記導出導体は前記端子導体と一体形成されている
ことを特徴としている。SUMMARY OF THE INVENTION A detector with a plug according to the present invention comprises a detector for detecting a predetermined state quantity and outputting an electric signal, and one end of which is connected to a signal output end of the detector. A plurality of lead-out conductors that lead out signals, a conductor support portion that electrically insulates each lead-out conductor, one end electrically connected to the other end of the lead-out conductor, and the other end connectable to a plug receiver In the detector with the insertion plug provided with the terminal conductor which is the blade portion of the insertion plug, the lead-out conductor is integrally formed with the terminal conductor.
【０００７】[0007]
【作用及び発明の効果】本発明の差し込みプラグ付き検
出器では、検出部から電気信号を受け取る導出導体が端
子導体と一体形成されており、更に、この端子導体の先
端部が差し込みプラグの刃部となっている。すなわち他
の観点に立てば、本発明では、検出部の出力端まで差し
込みプラグの端子導体が延長されている。In the detector with the insertion plug of the present invention, the lead-out conductor for receiving an electric signal from the detection portion is integrally formed with the terminal conductor, and the tip of the terminal conductor is further provided with the blade portion of the insertion plug. Has become. That is, from another point of view, in the present invention, the terminal conductor of the insertion plug is extended to the output end of the detection unit.
【０００８】このようにすれば、検出部から出力された
電気信号は単一の導出導体兼端子導体により、その刃部
に差し込まれるプラグ受け（コンセント）の導体に伝達
される。また、作製においても、検出器の信号導出部材
としての導出導体と、差し込みプラグの端子導体を一挙
に作製でき、かつその接続を省略できるので、工数及び
作製費用の低減と信頼性の向上とを図れるという優れた
効果を奏し得る。According to this structure, the electric signal output from the detecting portion is transmitted to the conductor of the plug receptacle (outlet) inserted into the blade portion by the single lead conductor / terminal conductor. Further, also in the production, since the lead-out conductor as the signal lead-out member of the detector and the terminal conductor of the insertion plug can be produced all at once and the connection thereof can be omitted, the man-hour and the production cost can be reduced and the reliability can be improved. The excellent effect that it can be achieved can be exhibited.
【０００９】[0009]
【実施例】以下、本発明の差し込みプラグ付き検出器の
一実施例として作製したＮＴＣサ−ミスタ型レベルセン
サについて図１の断面図に基づいて説明する。 このレ
ベルセンサにおいて、発熱式のＮＴＣサ−ミスタ１の両
端から出るリ−ド線１ａ、１ｂは本発明でいう導出導体
兼端子導体を構成する棒状タ−ミナル２、３の下端部に
巻着、固定されており、棒状タ−ミナル２、３はその各
中央上部において円柱状のインナケ−ス６の貫通孔６
ａ、６ｂを上下に貫通している。ここで、インナケ−ス
６の貫通孔６ａ、６ｂはインナケ−ス６の上端面部にお
いて径大孔６０となっており、一方、棒状タ−ミナル
２、３はこの径大孔６０の部分でつぶされて出っ張って
おり、この棒状タ−ミナル２、３の上記出っ張りが径大
孔６０の下面の段差部に当たることにより、棒状タ−ミ
ナル２、３が落下しない構成となっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An NTC thermistor type level sensor manufactured as an embodiment of the detector with a plug according to the present invention will be described below with reference to the sectional view of FIG. In this level sensor, the lead wires 1a and 1b extending from both ends of the heat-generating type NTC thermistor 1 are wound around the lower ends of the rod-shaped terminals 2 and 3 constituting the lead conductor and terminal conductor of the present invention. , The rod-shaped terminals 2 and 3 are fixed, and the through holes 6 of the cylindrical inner casing 6 are provided at the upper portions of the respective centers.
It penetrates a and 6b up and down. Here, the through holes 6a and 6b of the inner case 6 are large diameter holes 60 in the upper end surface portion of the inner case 6, while the rod-shaped terminals 2 and 3 are crushed in the large diameter hole 60 portion. The protrusions of the rod-shaped terminals 2 and 3 hit the stepped portion on the lower surface of the large diameter hole 60, so that the rod-shaped terminals 2 and 3 do not fall.
【００１０】インナケ−ス６の下端部外周には上端が開
口した有底長管状のアウタケ−ス７の上端開口部が嵌着
されており、これにより棒状タ−ミナル２、３は円盤状
のインシュレ−タ８とともにこのアウタケ−ス７内に収
容されている。棒状タ−ミナル２、３の位置決め振れ止
め用のインシュレ−タ８には一対の貫通孔が貫設されて
おり、棒状タ−ミナル２、３はこれら貫通孔を個別に貫
通して垂下している。インシュレ−タ８の直径はアウタ
ケ−ス７の内径にほぼ等しく、インシュレ−タ８の外周
面がアウタケ−ス７の内周面に密着配置されている。こ
こで、棒状タ−ミナル２、３はその中央下部に位置して
上部が径大、下部が径小となるように輪形の段差面２
０、３０をそれぞれ有しており、これらの段差面２０、
３０はインシュレ−タ８の上側平坦面に押圧されてい
る。On the outer circumference of the lower end of the inner case 6, an upper end opening of a bottomed long tubular outer case 7 having an open upper end is fitted, whereby the rod-shaped terminals 2 and 3 are disc-shaped. It is accommodated in the outer case 7 together with the insulator 8. A pair of through-holes are formed through the insulator 8 for positioning and stabilizing the rod-shaped terminals 2 and 3. The rod-shaped terminals 2 and 3 hang down individually through these through-holes. There is. The diameter of the insulator 8 is substantially equal to the inner diameter of the outer case 7, and the outer peripheral surface of the insulator 8 is closely attached to the inner peripheral surface of the outer case 7. Here, the rod-shaped terminals 2 and 3 are located at the lower part of the center thereof and have a ring-shaped step surface 2 such that the upper part has a large diameter and the lower part has a small diameter.
0 and 30, respectively, and these step surfaces 20,
30 is pressed against the upper flat surface of the insulator 8.
【００１１】アウタケ−ス７の下端の底面には液導入孔
７１が複数個、貫設されており、これら液導入孔７１か
ら液がアウタケ−ス７内部に侵入してＮＴＣサ−ミスタ
１を浸漬し得るようになっている。一方、インナケ−ス
６の上部外周には外周面に雄ねじ部を有する両端開口で
段付き円筒状のケ−ス９が嵌着されている。ここで、イ
ンナケ−ス６の上端部外周には鍔６１が設けられてお
り、この鍔６１の下面がケ−ス９の上端面に当接してい
る。A plurality of liquid introducing holes 71 are formed in the bottom surface of the lower end of the outer case 7 so that the liquid enters the outer case 7 through the liquid introducing holes 71 and the NTC thermistor 1 is introduced. It is ready for immersion. On the other hand, on the outer periphery of the upper portion of the inner case 6, a stepped cylindrical case 9 is fitted with openings at both ends having male threads on the outer peripheral surface. Here, a flange 61 is provided on the outer periphery of the upper end portion of the inner case 6, and the lower surface of the flange 61 is in contact with the upper end surface of the case 9.
【００１２】ケ−ス９は、インナケ−ス６の上端部に嵌
着される径小円筒部９１と、径小円筒部９１の上端外周
から水平に延設された鍔部９２と、鍔部９２の上端面外
周部から上方に延設される径大円筒部９３と、径大円筒
部９３の上端に設けられた薄肉円筒状のかしめ部９４と
からなる。ケ−ス９の径大円筒部９３内に多段円柱状の
コネクタ４の下部が嵌入されている。The case 9 has a small diameter cylindrical portion 91 fitted to the upper end of the inner casing 6, a flange portion 92 extending horizontally from the outer periphery of the upper end of the small diameter cylindrical portion 91, and a flange portion. The large-diameter cylindrical portion 93 extends upward from the outer peripheral portion of the upper end surface of 92, and the thin-walled cylindrical caulking portion 94 provided at the upper end of the large-diameter cylindrical portion 93. The lower part of the multi-stage cylindrical connector 4 is fitted in the large-diameter cylindrical portion 93 of the case 9.
【００１３】このコネクタ４は下部が大径部４１、中央
部が小径部４２、上部が中径部４３となっており、大径
部４１及び小径部４２の境界となる上向き段差面４４に
ケ−ス９のかしめ部９４がかしめられて、それによりコ
ネクタ４がケ−ス９に固定されている。コネクタ４の大
径部４１はその下端面から円溝部４５が凹設されてお
り、円筒状に残った大径部４１の下端面はケ−ス９の鍔
部９２の上端面に当たっており、大径部４１の外周面は
ケ−ス９の径大円筒部９３の内周面に当接している。The connector 4 has a large-diameter portion 41 in the lower portion, a small-diameter portion 42 in the central portion, and a medium-diameter portion 43 in the upper portion, and an upward step surface 44 serving as a boundary between the large-diameter portion 41 and the small-diameter portion 42 is closed. -The crimping portion 94 of the case 9 is crimped so that the connector 4 is fixed to the case 9. The large-diameter portion 41 of the connector 4 has a circular groove portion 45 recessed from the lower end surface thereof, and the lower end surface of the large-diameter portion 41 remaining in a cylindrical shape is in contact with the upper end surface of the flange portion 92 of the case 9. The outer peripheral surface of the diameter portion 41 is in contact with the inner peripheral surface of the large diameter cylindrical portion 93 of the case 9.
【００１４】円溝部４５に面する大径部４１の内周面に
は段差面４６が形成されており、この段差面４６がイン
ナケ−ス６の上端面外周部に当接してインナケ−ス６が
上方に抜け出るのを防止している。更に、コネクタ４の
小径部４２には２個の貫通孔が上下に貫設されており、
コネクタ４の中径部４３にはその上端面から円溝部４７
が凹設されている。A step surface 46 is formed on the inner peripheral surface of the large-diameter portion 41 facing the circular groove portion 45, and the step surface 46 abuts on the outer peripheral portion of the upper end surface of the inner case 6 to form the inner case 6. Is prevented from slipping upward. Further, two through holes are vertically provided in the small diameter portion 42 of the connector 4,
The middle diameter portion 43 of the connector 4 has a circular groove portion 47 from its upper end surface.
Is recessed.
【００１５】なお、コネクタ４の上記貫通孔は、下方の
円溝部４５と上方の円溝部４７とを連通しており、これ
ら円溝部４５及びコネクタ４の上記貫通孔を貫通して円
溝部４７内に、棒状タ−ミナル２、３が突出している。
円溝部４５にはゴムパッキン５が液密用に収容されてお
り、棒状タ−ミナル２、３はゴムパッキン５を貫通して
いる。コネクタ４の大径部４１の外周面にはＯリング１
０が液密のために巻装されている。The through hole of the connector 4 communicates with the lower circular groove portion 45 and the upper circular groove portion 47, and penetrates the circular groove portion 45 and the through hole of the connector 4 and the inside of the circular groove portion 47. Further, rod-shaped terminals 2 and 3 are projected.
The rubber packing 5 is housed in the circular groove portion 45 for liquid-tightness, and the rod-shaped terminals 2 and 3 penetrate the rubber packing 5. The O-ring 1 is provided on the outer peripheral surface of the large diameter portion 41 of the connector 4.
0 is wound for liquid tightness.
【００１６】コネクタ４の中径部４３に設けられた円溝
部４７には図示しないゴムカバ−付のコンセントが嵌め
込まれるようになっており、このコンセントの端子金具
に棒状タ−ミナル２、３の上端部が差し込まれるように
なっている。棒状タ−ミナル２、３の上端部２１、３１
は円棒を断面長方形に成形して形成されており、上記コ
ンセントの端子金具の平坦なタ−ミナル当接面に対し接
触面積を稼いでいる。この棒状タ−ミナル２、３の上端
部２１、３１の成形時に上端部２１、３１の直下に下広
がりのテ−パ面２２、３２が成形され、コネクタ４の貫
通孔をこのテ−パ面２２、３２に合わせて成形すること
により、棒状タ−ミナル２、３の上方への抜けが阻止さ
れている。An outlet with a rubber cover (not shown) is fitted in a circular groove portion 47 provided in the medium diameter portion 43 of the connector 4, and the upper ends of the rod-shaped terminals 2 and 3 are fitted to the terminal fittings of this outlet. The parts are designed to be plugged in. Upper ends 21, 31 of the rod-shaped terminals 2, 3.
Is formed by molding a circular rod into a rectangular cross section, and has a large contact area with respect to the flat terminal contact surface of the terminal fitting of the outlet. When the upper ends 21 and 31 of the rod-shaped terminals 2 and 3 are formed, downwardly widened taper surfaces 22 and 32 are formed immediately below the upper ends 21 and 31, and the through holes of the connector 4 are formed in the tapered surfaces. By molding in accordance with Nos. 22 and 32, the rod-shaped terminals 2 and 3 are prevented from coming off upward.
【００１７】更に説明すれば、ＮＴＣサ−ミスタはＮＴ
Ｃセラミックスの両端にステンレス製のリ−ド線１ａ、
１ｂを取り付けたものであり、棒状タ−ミナル２、３は
黄銅又は銅にメッキを施したものが用いられる。インナ
ケ−ス６、アウタケ−ス７、コネクタ４は樹脂成形品か
らなり、インナケ−ス６とアウタケ−ス７とは接着され
ている。ケ−ス９は黄銅又は銅又はアルミを素材として
おり、車両のオイルタンクに取り付けられる。To explain further, the NTC thermistor is NT
Lead wire 1a made of stainless steel on both ends of C ceramics,
1b is attached, and the rod-shaped terminals 2 and 3 are brass or copper plated. The inner case 6, the outer case 7, and the connector 4 are resin molded products, and the inner case 6 and the outer case 7 are bonded to each other. The case 9 is made of brass, copper or aluminum and is attached to an oil tank of a vehicle.
【００１８】上記したレベルセンサを組み立てるには、
棒状タ−ミナル２、３によりインナケ−ス６を貫通させ
た後、インシュレ−タ８を付け、インナケ−ス６をケ−
ス９に嵌入し、アウタケ−ス７をインナケ−ス６に接着
する。次に、パッキン５を嵌めた後、棒状タ−ミナル
２、３にコネクタ４を貫通させ、ケ−ス９のかしめ部９
４をかしめる。このように、このレベルセンサの組立は
極めて簡単である。To assemble the above level sensor,
After the inner casing 6 is pierced by the rod-shaped terminals 2 and 3, an insulator 8 is attached and the inner casing 6 is attached to the casing.
The outer case 7 is attached to the inner case 6 by fitting the outer case 7 into the inner case 6. Next, after fitting the packing 5, the connector 4 is passed through the rod-shaped terminals 2 and 3, and the caulked portion 9 of the case 9 is crimped.
Crimp 4 Thus, the assembly of this level sensor is extremely simple.
【００１９】本実施例のレベルセンサの作動を以下に説
明する。コネクタ４に上記コンセント（図示せず）を差
し込み、このコンセントの一対の端子金具で棒状タ−ミ
ナル２、３の上端部すなわち差し込みプラグの刃部２
１、３１を個別に挟み、ＮＴＣサ−ミスタ１に通電する
と、ＮＴＣサ−ミスタ１が発熱する。ＮＴＣサ−ミスタ
の抵抗値は温度と相関関係を有するので、ＮＴＣサ−ミ
スタ１に液面が上昇してオイルが接触すると電流値が変
化し、それにより液面が検出される。The operation of the level sensor of this embodiment will be described below. The outlet (not shown) is inserted into the connector 4, and a pair of terminal fittings of the outlet are used to connect the upper ends of the rod-shaped terminals 2 and 3, that is, the blade portion 2 of the insertion plug.
When the NTC thermistor 1 is energized by sandwiching 1 and 31 individually, the NTC thermistor 1 generates heat. Since the resistance value of the NTC thermistor has a correlation with the temperature, when the liquid level rises on the NTC thermistor 1 and oil comes into contact with it, the current value changes, and the liquid level is detected.
【００２０】他の態様を図２により説明する。この態様
では、０リング１０はコネクタ４の大径部４１の下端外
周部の溝に巻装されており、これにより、０リング１０
はケ−ス９の内周面及び鍔部９２の上端面に当接させ。
シ−ル性を向上させることができる。以上、本発明をＮ
ＴＣサ−ミスタ型のレベルセンサに適用した場合を説明
したが、当然、本発明の差し込みプラグ付き検出器は、
その他のレベルセンサの他、温度センサ、ガスセンサ、
圧力センサなど、検出器全般に適用できることは言うま
でもない。Another aspect will be described with reference to FIG. In this mode, the O-ring 10 is wound around the groove at the lower end outer periphery of the large-diameter portion 41 of the connector 4, whereby the O-ring 10 is wound.
Is brought into contact with the inner peripheral surface of the case 9 and the upper end surface of the collar portion 92.
The sealability can be improved. As described above, the present invention is
The case where the present invention is applied to the TC thermistor type level sensor has been described. Of course, the detector with a plug of the present invention is
In addition to other level sensors, temperature sensors, gas sensors,
It goes without saying that it can be applied to all detectors such as pressure sensors.
【図１】一実施例としてのＮＴＣサ−ミスタ型レベルセ
ンサの断面図、FIG. 1 is a sectional view of an NTC thermistor type level sensor as one embodiment,
【図２】図１のレベルセンサの他の態様を示す部分断面
図、FIG. 2 is a partial cross-sectional view showing another aspect of the level sensor of FIG.
【符号の説明】 １はＮＴＣサ−ミスタ（検出部） ２、３は棒状タ−ミナル（導出導体、端子導体） ６はインナケ−ス（導体支持部） ４はコネクタ（導体支持部） ２１、３１は棒状タ−ミナル２、３の上端部（刃部）[Explanation of Codes] 1 is an NTC thermistor (detection part) 2, 3 is a rod-shaped terminal (lead-out conductor, terminal conductor) 6 is an inner case (conductor support part) 4 is a connector (conductor support part) 21, 31 is the upper end (blade) of the bar-shaped terminals 2 and 3.
Claims (1)
る検出部と、一端が前記検出部の信号出力端に接続され
前記電気信号を導出する複数の導出導体と、前記各導出
導体を電気絶縁可能に支持する導体支持部と、一端部が
前記導出導体の他端に電気的に接続され他端部がプラグ
受けに接続可能な差し込みプラグの刃部となっている端
子導体とを備える差し込みプラグ付き検出器において、 前記導出導体は前記端子導体と一体形成されていること
を特徴とする差し込みプラグ付き検出器。1. A detection part for detecting a predetermined state quantity and outputting an electric signal, a plurality of lead-out conductors, one end of which is connected to a signal output end of the detection part to lead out the electric signal, and each of the lead-out conductors. A conductor supporting portion for electrically insulating and a terminal conductor having one end electrically connected to the other end of the lead-out conductor and the other end being a blade portion of a plug plug connectable to a plug receiver. A detector with an insertion plug, wherein the lead-out conductor is integrally formed with the terminal conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25804491A JPH0599725A (en) | 1991-10-04 | 1991-10-04 | Detector with plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25804491A JPH0599725A (en) | 1991-10-04 | 1991-10-04 | Detector with plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0599725A true JPH0599725A (en) | 1993-04-23 |
Family
ID=17314764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25804491A Pending JPH0599725A (en) | 1991-10-04 | 1991-10-04 | Detector with plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0599725A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997036153A1 (en) * | 1996-03-28 | 1997-10-02 | Matsushita Electric Industrial Co., Ltd. | Liquid level sensor |
-
1991
- 1991-10-04 JP JP25804491A patent/JPH0599725A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997036153A1 (en) * | 1996-03-28 | 1997-10-02 | Matsushita Electric Industrial Co., Ltd. | Liquid level sensor |
| US5910189A (en) * | 1996-03-28 | 1999-06-08 | Matsushita Electric Industrial Co., Ltd. | Liquid level sensor |
| KR100250721B1 (en) * | 1996-03-28 | 2000-04-01 | 모리시타 요이찌 | Liquid level sensor |
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