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DE4423985C2 - Method for producing a moisture-proof connection of an electrical line to a thermistor of a temperature sensor - Google Patents

Method for producing a moisture-proof connection of an electrical line to a thermistor of a temperature sensor

Info

Publication number
DE4423985C2
DE4423985C2 DE4423985A DE4423985A DE4423985C2 DE 4423985 C2 DE4423985 C2 DE 4423985C2 DE 4423985 A DE4423985 A DE 4423985A DE 4423985 A DE4423985 A DE 4423985A DE 4423985 C2 DE4423985 C2 DE 4423985C2
Authority
DE
Germany
Prior art keywords
thermistor
temperature sensor
moisture
line
cable
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 - Fee Related
Application number
DE4423985A
Other languages
German (de)
Other versions
DE4423985A1 (en
Inventor
Gerald Kloiber
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.)
TDK Electronics AG
Original Assignee
Epcos AG
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 Epcos AG filed Critical Epcos AG
Priority to DE4423985A priority Critical patent/DE4423985C2/en
Priority to TW086208730U priority patent/TW387640U/en
Priority to DE59510387T priority patent/DE59510387D1/en
Priority to AT95110297T priority patent/ATE225087T1/en
Priority to JP7188216A priority patent/JP2815555B2/en
Priority to EP95110297A priority patent/EP0691705B1/en
Publication of DE4423985A1 publication Critical patent/DE4423985A1/en
Application granted granted Critical
Publication of DE4423985C2 publication Critical patent/DE4423985C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/22—End caps, i.e. of insulating or conductive material for covering or maintaining connections between wires entering the cap from the same end
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Thermistors And Varistors (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The method manufactures a moisture tight connection between a cable (1) and a thermistor (4) of a temperature sensor. First of all thermistor contacts are electrically and mechanically connected to the cores (2, 3) of the cable. The cable end and the thermistor arranged at the cable end are injection moulded around by synthetic material which adheres tightly to the cable sleeve. In one embodiment the synthetic material is a thermoplast. The injection moulding is carried out in a multi-stage injection process. <IMAGE>

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung einer feuchtigkeitsdichten Verbindung einer elektrischen Leitung mit einem Thermistor eines Temperatursensors nach dem Oberbegriff des Patentanspruchs 1.The present invention relates to a method for Establishing a moisture-proof connection of a electrical wire with a thermistor Temperature sensor according to the preamble of patent claim 1.

In der Klimatechnik sowie in der Gefrier- und Kühlgerätetechnik werden zur Temperaturmessung an Verdampfern und/oder im klimatisierten Räumen betauungsfähige d. h. feuchtigkeitsdichte leitungsgebundene Temperatursensoren benötigt. Nach dem Kenntnisstand der Anmelderin werden gegenwärtig derartige Temperatursensoren in Kunststoffhüllen vergossen. Im Bereich der Schnittstelle zwischen Leitung und Sensorgehäuse bzw. Verguß in der Kunststoffhülse tritt das Problem der Abdichtung gegen den Eintritt von Luftfeuchtigkeit auf. Derartige Systeme sind daher nicht dicht.In air conditioning technology as well as in freezing and Cooling technology is used for temperature measurement on evaporators and / or dewable in air-conditioned rooms d. H. Moisture-proof, wired temperature sensors needed. According to the applicant's knowledge Such temperature sensors currently in plastic sleeves shed. In the area of the interface between line and Sensor housing or potting in the plastic sleeve that occurs Problem of sealing against the ingress of Humidity. Such systems are therefore not tight.

Zur mehr oder weniger zufriedenstellenden Lösung dieses Problems werden zusätzliche Schrumpfschläuche oder Dichtungselemente aufgebracht, oder die Schnittstelle zusätzlich verklebt.For a more or less satisfactory solution this Additional heat shrink tubing or Sealing elements applied, or the interface additionally glued.

Aus der JP 0060151653 AA ist ein Verfahren zur Versiegelung von Temperatursensoren bekannt. Dazu werden in einem zweistufigen Gußverfahren der Thermistor und die Schnittstelle zwischen Leitung und Sensorgehäuse mit einer Kunststoffumspritzung umgeben. Als Material für das Kunststoffgehäuse wird dabei Polypropylen und Polyphenylensulfid (PPS) erwähnt. Als Material für den Kabelmantel wird PVC genannt. JP 0060151653 AA describes a method for sealing known from temperature sensors. To do this in one two-stage molding process of the thermistor and the Interface between cable and sensor housing with one Plastic encapsulation surround. As material for that Polypropylene and Polyphenylene sulfide (PPS) mentioned. As material for the Cable sheath is called PVC.  

Aus der Druckschrift DE 36 25 265 A1 ist bekannt, passive, elektrische Bauelemente mit Umhüllungen aus thermoplastisch verarbeitbaren, flüssigkristallinen Polymeren zu umgeben.DE 36 25 265 A1 discloses passive, electrical components with envelopes made of thermoplastic processable, liquid-crystalline polymers to surround.

In dem Gebrauchsmuster DE 81 20 039 U1 wird vorgeschlagen, Sensorbauteile und zugehörige Anschlußleitungen gemeinsam zu umspritzen.The utility model DE 81 20 039 U1 proposes Sensor components and associated connecting cables together overmolded.

Aus der FR 2348803 A ist ein Verfahren zur Abdichtung der Verbindungsstelle eines Unterwasserkabels bekannt. Dazu werden auf das Kabel im Bereich der Verbindungsstelle Abstandselemente aufgesteckt, die einen Hohlraum definieren, der anschließend in einer Spritzform mit einem Thermoplast aufgefüllt wird. In einem weiteren Umspritzvorgang wird eine weitere Schicht eines Polymeren aufgetragen.FR 2348803 A describes a method for sealing the Junction of an underwater cable known. To are on the cable in the area of the connection point Spacers are attached, which define a cavity, which is then in an injection mold with a thermoplastic is replenished. In a further molding process, a another layer of a polymer applied.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein einfaches und zuverlässiges Verfahren zur Herstellung einer feuchtigkeitsdichten Verbindung der in Rede stehenden Art anzugeben.The present invention is based on the object simple and reliable process for making a moisture-proof connection of the type in question specify.

Diese Aufgabe wird bei einem Verfahren der eingangsgenannten Art erfindungsgemäß durch die Merkmale des kennzeichnenden Teils des Patentanspruchs 1 gelöst. Eine vorteilhafte Ausgestaltung der Erfindung ist Gegenstand eines Unteranspruchs.This task is carried out in a method of the type mentioned Art according to the invention by the features of the characteristic Part of claim 1 solved. An advantageous one Embodiment of the invention is the subject of a Under claim.

Die Erfindung wird im nachfolgenden anhand des Ausführungsbeispiels und der Zeichnung näher erläutert. Es zeigt:The invention is based on the Embodiment and the drawing explained in more detail. It shows:

Fig. 1 ein erstes Ausführungsbeispiel eines Temperatursensors; und Fig. 1 shows a first embodiment of a temperature sensor; and

Fig. 2 ein Ausführungsbeispiel eines in einem zweistufigen Spritzverfahren hergestellten Temperatursensors. Fig. 2 shows an embodiment of a temperature sensor manufactured in a two-stage spraying process.

Gemäß Fig. 1 ist an aus einer Leitung 1 austretenden Leitungsadern 2 und 3 ein Thermistor 4 elektrisch und mechanisch angebracht. Dies kann beispielsweise durch eine temperaturfeste Lötverbindung, durch Schweißen oder Crimpen der Leitungsadern 2 und 3 mit nicht näher dargestellten Elektroden bzw. Anschlüssen des Thermistors 4 erfolgen.Referring to FIG. 1, a thermistor 4 is attached electrically and mechanically to emerging from a line 1 line wires 2 and 3. This can be done, for example, by a temperature-resistant solder connection, by welding or crimping the line wires 2 and 3 with electrodes or connections of the thermistor 4, which are not shown in detail.

Die so hergestellte Einheit aus Leitung 1 und Thermistor 4 wird im Bereich des Leitungsendes und dem an diesen befindlichen Thermistor 4 mit einem am Leitungsmaterial fest und dicht haftenden Kunststoff 5 in der dargestellten Weise umspritzt. Dadurch entsteht am Leitungsende im Bereich des Thermistors 1 eine feuchtigkeitsdichte Verbindung des durch den Kunststoff 5 gebildeten Sensorkopfs.The unit made in this way from line 1 and thermistor 4 is extrusion-coated in the region of the line end and the thermistor 4 located thereon with a plastic 5 firmly and tightly adhering to the line material in the manner shown. This creates a moisture-proof connection of the sensor head formed by the plastic 5 at the end of the line in the region of the thermistor 1 .

Es werden spezifische Materialkombinationen für den Kabelmantel und das Sensorgehäuse eingesetzt. Erfindungsgemäß wird dabei Polyvinylchlorid als Kabelmantelmatetial verwendet, das in Verbindung mit Polybutylenterephtalat als, Material für das Gehäuse eingesetzt wird.There are specific material combinations for the Cable sheath and the sensor housing inserted. According to the invention polyvinyl chloride is used as cable sheath material used in conjunction with polybutylene terephthalate as, Material used for the housing.

Bei höheren Ansprüchen an die Positionierung des Thermistors 4 innerhalb des Sensorkopfs erfolgt in erfindungsgemäßer Weise ein mehrstufiger Spritzvorgang. Ein, in einem derartigen zweistufigen Spritzvorgang hergestellter Temperatursensor ist in Fig. 2 dargestellt, in der gleiche Teile wie in Fig. 1 mit gleichen Bezugszeichen versehen sind. Erfindungsmäßig ist über der ersten Umspritzung 5 eine zweite Umspritzung 7 vorgesehen. Um die Kombination aus Leitung 1 und Thermistor 4 in einer Spritzform noch besser positionieren zu können, können an der Umspritzung 5 Positionierungselemente 6 vorgesehen sein, welche in der Spritzform zur Herstellung der Umspritzung 5 direkt mit angespritzt werden können.If the demands on the positioning of the thermistor 4 within the sensor head are higher, a multi-stage spraying process takes place in the manner according to the invention. A temperature sensor produced in such a two-stage spraying process is shown in FIG. 2, in which the same parts as in FIG. 1 are provided with the same reference numerals. According to the invention, a second encapsulation 7 is provided above the first encapsulation 5 . In order to be able to position the combination of line 1 and thermistor 4 even better in an injection mold, 5 positioning elements 6 can be provided on the extrusion coating, which can be injected directly into the injection mold to produce the extrusion coating 5 .

Claims (2)

1. Verfahren zur Herstellung einer feuchtigkeitsdichten Verbindung einer elektrischen Leitung (1) mit einem Thermistor (4) eines Temperatursensors, bei dem zunächst Thermistoranschlüsse elektrisch und mechanisch mit den Adern (2, 3) der Leitung (1) verbunden werden und sodann das Leitungsende und der an diesem befindliche Thermistor(4) in einem ein- oder mehrstufigen Spritzvorgang mit einem an Leitungsmaterial fest und dicht haftenden Kunststoff (5, 6, 7) umspritzt werden, dadurch gekennzeichnet, daß als Materialkombination für das Material der Leitung (1) Polyvinylchlorid und der Umspritzungen (5, 6, 7) Poly­ butylenterephtalat verwendet wird.1. A method for producing a moisture-proof connection of an electrical line ( 1 ) with a thermistor ( 4 ) of a temperature sensor, in which thermistor connections are first electrically and mechanically connected to the wires ( 2 , 3 ) of the line ( 1 ) and then the line end and the, characterized in that located thermistor (4) in a one- or multi-stage injection molding process with an on line material firmly and tightly adhering plastic (5, 6, 7) are encapsulated, that the material combination for the material of the pipe (1) polyvinyl chloride, and the extrusion ( 5 , 6 , 7 ) poly butylene terephthalate is used. 2. Verfahren nach Anspruch 1,
bei dem in einem ersten Spritzvorgang eine erste Umspritzung (5) aufgetragen wird, wobei in der Spritzform Positionierungselemente (6) direkt mit aufgespritzt werden,
bei dem in einem zweiten Spritzvorgang auf die erste Umspritzung (5) und die Positionierungselemente (6) eine zweite Umspritzung (7) aufgetragen wird.2. The method according to claim 1,
in which a first overmolding ( 5 ) is applied in a first spraying process, positioning elements ( 6 ) being directly sprayed on in the injection mold,
in which a second overmolding ( 7 ) is applied to the first overmolding ( 5 ) and the positioning elements ( 6 ) in a second spraying process.
DE4423985A 1994-07-07 1994-07-07 Method for producing a moisture-proof connection of an electrical line to a thermistor of a temperature sensor Expired - Fee Related DE4423985C2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE4423985A DE4423985C2 (en) 1994-07-07 1994-07-07 Method for producing a moisture-proof connection of an electrical line to a thermistor of a temperature sensor
TW086208730U TW387640U (en) 1994-07-07 1995-05-31 A mosture-proof connection-structure between a conducting line and a thermistor in a temperature sensor
DE59510387T DE59510387D1 (en) 1994-07-07 1995-06-30 Method for producing a moisture-proof connection of an electrical line to a thermistor of a temperature sensor
AT95110297T ATE225087T1 (en) 1994-07-07 1995-06-30 METHOD FOR PRODUCING A MOISTURE TIGHT CONNECTION OF AN ELECTRICAL CABLE WITH A THERMISTOR OF A TEMPERATURE SENSOR
JP7188216A JP2815555B2 (en) 1994-07-07 1995-06-30 Method for forming a joined body between a thermistor and an electric conductor of a temperature sensor
EP95110297A EP0691705B1 (en) 1994-07-07 1995-06-30 Method for making a moisture sealed connection between an electrical lead an a thermistor of a temperature sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4423985A DE4423985C2 (en) 1994-07-07 1994-07-07 Method for producing a moisture-proof connection of an electrical line to a thermistor of a temperature sensor

Publications (2)

Publication Number Publication Date
DE4423985A1 DE4423985A1 (en) 1996-01-11
DE4423985C2 true DE4423985C2 (en) 2002-04-04

Family

ID=6522563

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4423985A Expired - Fee Related DE4423985C2 (en) 1994-07-07 1994-07-07 Method for producing a moisture-proof connection of an electrical line to a thermistor of a temperature sensor
DE59510387T Expired - Lifetime DE59510387D1 (en) 1994-07-07 1995-06-30 Method for producing a moisture-proof connection of an electrical line to a thermistor of a temperature sensor

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE59510387T Expired - Lifetime DE59510387D1 (en) 1994-07-07 1995-06-30 Method for producing a moisture-proof connection of an electrical line to a thermistor of a temperature sensor

Country Status (5)

Country Link
EP (1) EP0691705B1 (en)
JP (1) JP2815555B2 (en)
AT (1) ATE225087T1 (en)
DE (2) DE4423985C2 (en)
TW (1) TW387640U (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19631376C1 (en) * 1996-08-02 1997-11-20 Siemens Matsushita Components Manufacturing moisture tight temperature sensor esp. for air conditioning, cooling, refrigeration systems
NL1004802C2 (en) * 1996-12-17 1998-06-18 Bms Electronics B V Method for manufacturing a plug at one end of a cable and such a plug.
DE10044460B4 (en) * 1999-09-08 2008-07-31 Tyco Electronics Amp Gmbh Assembly and method for producing the same
DE10340551A1 (en) * 2003-09-01 2005-04-14 Siemens Ag Production of a sensor head for measuring rotation and angles of rotation, e.g. for vehicle wheel, comprises injecting an elastomer directly onto a component support, a sensor and part of a connecting cable
DE10340636B3 (en) * 2003-09-03 2005-01-13 Epcos Ag Moisture-proof sensor manufacturing method, by splitting cable sheath into two halves, connecting cable conductors to sensor head, and heating halves of sheath to form hermetic seal
DE10356880B4 (en) * 2003-12-03 2011-04-21 Sontec Sensorbau Gmbh Method for producing a liquid, gas and vapor-tight electrical and / or optical component
US7128467B2 (en) 2004-03-18 2006-10-31 General Electric Company Thermistor probe assembly and method for positioning and moisture proofing thermistor probe assembly
DE102008029192A1 (en) 2008-03-13 2009-09-24 Epcos Ag Sensor for detecting a physical quantity and method for manufacturing the sensor
DE102012218206A1 (en) * 2012-10-05 2014-04-10 Zf Friedrichshafen Ag Cable connecting and/or cable branching sleeve, has strands branched and/or connected in area of connection device, and positioning device enclosing connection device, where connection and positioning devices are merged in spraying mass
JP6623889B2 (en) * 2016-03-29 2019-12-25 三菱マテリアル株式会社 Lead wire encapsulated electronic component and method of manufacturing the same
CN115307766A (en) 2021-05-08 2022-11-08 热敏碟公司 Temperature sensor probe

Citations (4)

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Publication number Priority date Publication date Assignee Title
FR2348803A1 (en) * 1976-04-21 1977-11-18 Schlumberger Technology Corp IMPROVEMENT IN BONDING TECHNIQUES BETWEEN THERMOPLASTIC POLYMERS AND A SUBSTRATE AND ITS APPLICATION TO THE MANUFACTURE OF CABLE ENDINGS FOR MARINE USE
DE8120039U1 (en) * 1981-07-09 1982-12-16 Robert Bosch Gmbh, 7000 Stuttgart "Connection cable for an electrical device"
DE3625265A1 (en) * 1986-07-25 1988-02-04 Basf Ag Encapsulated passive ceramic components for electronics
JPH06151653A (en) * 1992-11-16 1994-05-31 Hitachi Cable Ltd Structure and method for sealing temperature sensor

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Publication number Priority date Publication date Assignee Title
GB2207297B (en) * 1987-07-11 1991-07-31 Stc Plc Encapsulated electronic components
JPH02227624A (en) * 1989-02-28 1990-09-10 Nippondenso Co Ltd Temperature sensor
JPH06132335A (en) * 1992-10-16 1994-05-13 Hitachi Cable Ltd Manufacture of lead frame insert injection molded article

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2348803A1 (en) * 1976-04-21 1977-11-18 Schlumberger Technology Corp IMPROVEMENT IN BONDING TECHNIQUES BETWEEN THERMOPLASTIC POLYMERS AND A SUBSTRATE AND ITS APPLICATION TO THE MANUFACTURE OF CABLE ENDINGS FOR MARINE USE
DE8120039U1 (en) * 1981-07-09 1982-12-16 Robert Bosch Gmbh, 7000 Stuttgart "Connection cable for an electrical device"
DE3625265A1 (en) * 1986-07-25 1988-02-04 Basf Ag Encapsulated passive ceramic components for electronics
JPH06151653A (en) * 1992-11-16 1994-05-31 Hitachi Cable Ltd Structure and method for sealing temperature sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Datenbank: DOKIOX auf Depatis München, Deutsches Patent- und Markenamt, AN 3052231: JP 6-151653AA benutzt am 29.05.00 *

Also Published As

Publication number Publication date
JPH0869904A (en) 1996-03-12
DE4423985A1 (en) 1996-01-11
DE59510387D1 (en) 2002-10-31
EP0691705B1 (en) 2002-09-25
EP0691705A1 (en) 1996-01-10
JP2815555B2 (en) 1998-10-27
TW387640U (en) 2000-04-11
ATE225087T1 (en) 2002-10-15

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: EPCOS AG, 81541 MUENCHEN, DE

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee