DE4423985A1 - 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
DE4423985A1
DE4423985A1 DE4423985A DE4423985A DE4423985A1 DE 4423985 A1 DE4423985 A1 DE 4423985A1 DE 4423985 A DE4423985 A DE 4423985A DE 4423985 A DE4423985 A DE 4423985A DE 4423985 A1 DE4423985 A1 DE 4423985A1
Authority
DE
Germany
Prior art keywords
thermistor
moisture
temperature sensor
cable
producing
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.)
Granted
Application number
DE4423985A
Other languages
German (de)
Other versions
DE4423985C2 (en
Inventor
Gerald Ing 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
Siemens Matsushita Components GmbH and Co KG
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 Siemens Matsushita Components GmbH and Co KG filed Critical Siemens Matsushita Components GmbH and Co KG
Priority to DE4423985A priority Critical patent/DE4423985C2/en
Priority to TW086208730U priority patent/TW387640U/en
Priority to EP95110297A priority patent/EP0691705B1/en
Priority to JP7188216A priority patent/JP2815555B2/en
Priority to AT95110297T priority patent/ATE225087T1/en
Priority to DE59510387T priority patent/DE59510387D1/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 Herstel­ lung einer feuchtigkeitsdichten Verbindung einer elektrischen Leitung mit einem Thermistor eines Temperatursensors nach dem Oberbegriff des Patentanspruchs 1.The present invention relates to a method of manufacture a moisture-proof connection of an electrical Line with a thermistor of a temperature sensor according to the Preamble of claim 1.

In der Klimatechnik sowie in der Gefrier- und Kühlgerätetech­ nik werden zur Temperaturmessung an Verdampfern und/oder im klimatisierten Räumen betauungsfähige, d. h. feuchtigkeits­ dichte leitungsgebundene Temperatursensoren benötigt. Nach dem Kenntnisstand der Anmelderin werden gegenwärtig derartige Temperatursensoren in Kunststoffhülsen vergossen. Im Bereich der Schnittstelle zwischen Leitung und Sensorgehäuse bzw. Verguß in der Kunststoffhülse tritt das Problem der Abdich­ tung gegen den Eintritt von Feuchtigkeit auf. Derartige Systeme sind daher nicht dicht.In air conditioning technology as well as in freezer and refrigerator technology nik are used for temperature measurement on evaporators and / or in air-conditioned rooms condensable, d. H. moisture tight wired temperature sensors are required. To the applicant's knowledge is currently becoming such Temperature sensors cast in plastic sleeves. In the area the interface between the cable and the sensor housing or Potting in the plastic sleeve occurs the problem of sealing against the ingress of moisture. Such Systems are therefore not tight.

Dieses Problem kann durch Aufbringung von zusätzlichen Schrumpfschläuchen, Dichtungselementen oder durch zusätzli­ ches Verkleben der Schnittstelle aufwendig mehr oder weniger zufriedenstellend gelöst werden.This problem can be solved by applying additional Shrink sleeves, sealing elements or by additional ch gluing the interface complex more or less be solved satisfactorily.

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. 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.  

Weiterbildungen der Erfindung sind Gegenstand von Unteran­ sprüchen.Developments of the invention are the subject of Unteran sayings.

Die Erfindung wird nachfolgend anhand von Ausführungsbeispie­ len gemäß den Figuren der Zeichnung näher erläutert. Es zeigt:The invention is described below with reference to exemplary embodiments len explained in more detail according to the figures of the drawing. It shows:

Fig. 1 ein erstes Ausführungsbeispiel eines erfindungsgemäß hergestellten Temperatursensors; und Fig. 1 shows a first embodiment of a temperature sensor according to the invention; and

Fig. 2 ein zweites Ausführungsbeispiel eines erfindungsgemäß hergestellten Temperatursensors. Fig. 2 shows a second embodiment of a temperature sensor manufactured according to the invention.

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

Die so hergestellte Einheit aus Leitung 1 und Thermistor 4 wird erfindungsgemäß in eine Spritzform eingebracht und im Bereich des Leitungsendes und dem an diesem befindlichen Thermistor 4 mit einem am Leitungsmantelmaterial fest und dicht haftenden Kunststoff 5, beispielsweise einem Ther­ moplast, in der dargestellten Weise umspritzt. Dadurch ent­ steht am Leitungsende im Bereich des Thermistors 1 eine feuchtigkeitsdichte Verbindung des durch den Kunststoff 5 gebildeten Sensorkopf.The unit thus produced from line 1 and thermistor 4 is introduced according to the invention into an injection mold and in the area of the line end and the thermistor 4 located thereon with a plastic 5 firmly and tightly adhering to the line jacket material, for example a thermoplastic, overmolded in the manner shown. This ent ent at the end of the line in the region of the thermistor 1, a moisture-proof connection of the sensor head formed by the plastic 5 .

Als Materialkombinationen für Kabelmantelmaterial und Sensor­ kopfmaterial haben sich beispielsweise folgende Materialien als vorteilhaft erwiesen. Ist das Kabelmantelmaterial Poly­ venylchlorid, so ist als Sensorkopfmaterial Polybutylenter­ ephthalat (PBT) geeignet. Ist das Kabelmaterial auf Polypro­ pylen-Basis aufgebaut, so eignet sich als Sensorkopfmaterial ebenfalls Polypropylen oder Hochdruckpolyäthylen. As material combinations for cable sheath material and sensor For example, the following materials are used for the head material proven to be advantageous. Is the cable sheath material poly Venyl chloride is polybutylene as the sensor head material ephthalate (PBT) suitable. Is the cable material on Polypro pylene base, so it is suitable as sensor head material also polypropylene or high-pressure polyethylene.  

Bei höheren Anforderungen an die Positionierung des Thermi­ stors 4 innerhalb des Sensorkopfes kann in Weiterbildung der Erfindung ein mehrstufiger Spritzvorgang erfolgen. Ein Aus­ führungsbeispiel eines in einem derartigen zweistufigen Spritzvorgang hergestellten Temperatursensors ist in Fig. 2 dargestellt, in der gleiche Teile wie in Fig. 1 mit gleichen Bezugszeichen versehen sind. Bei diesem Ausführungsbeispiel ist über die erste 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 vor­ gesehen sein, welche in der Spritzform zur Herstellung der Umspritzung 5 direkt mit angespritzt werden können.For higher requirements on the positioning of the Thermi stors 4 within the sensor head, a multi-stage spraying process can be carried out in a development of the invention. An exemplary embodiment of 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. In this exemplary embodiment, a second extrusion coating 7 is provided via the first extrusion coating 5 . In order to use the combination of line 1 and thermistor 4 in an injection mold even better position, can be seen in front, which can be molded in the injection mold for producing the encapsulation 5 directly to the encapsulation 5 positioning elements. 6

Claims (3)

1. Verfahren zur Herstellung einer feuchtigkeitsdichten Verbindung einer elektrischen Leitung (1) mit einem Thermi­ stor (4) eines Temperatursensors, bei dem zunächst Thermi­ storanschlüsse elektrisch und mechanisch mit Adern (2, 3) der Leitung (1) verbunden werden, dadurch gekennzeichnet, daß das Leitungsende und der an diesem befindliche Thermistor (4) mit einem am Leitungsmantelmaterial fest und dicht haf­ tenden Kunststoff (5; 5, 6, 7) umspritzt wird.1. A method for producing a moisture-proof connection of an electrical line ( 1 ) with a Thermi stor ( 4 ) of a temperature sensor, in which Thermi stor connections are first electrically and mechanically connected to wires ( 2 , 3 ) of the line ( 1 ), characterized in that that the line end and the thermistor ( 4 ) located thereon is extrusion-coated with a plastic ( 5 ; 5 , 6 , 7 ) that is tight and tightly adhering to the line jacket material. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Kunststoff (5; 5, 6, 7) ein Thermoplast verwendet wird.2. The method according to claim 1, characterized in that a thermoplastic is used as the plastic ( 5 ; 5 , 6 , 7 ). 3. Verfahren nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß die Umspritzung mit Kunststoff (5; 5, 6, 7) in einem mehrstufigen Spritzvorgang durchgeführt wird.3. The method according to claim 1 and / or 2, characterized in that the extrusion coating with plastic ( 5 ; 5 , 6 , 7 ) is carried out in a multi-stage injection 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
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
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
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
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

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 true DE4423985A1 (en) 1996-01-11
DE4423985C2 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)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
DE10356880A1 (en) * 2003-12-03 2005-07-07 Sontec Sensorbau Gmbh The electrical and/or optical sensor has the functional element within a shrouding, together with a sealing material, to give a gas- and vapor-tight protection against the ambient environment
DE10044460B4 (en) * 1999-09-08 2008-07-31 Tyco Electronics Amp Gmbh Assembly and method for producing the same
WO2009112457A1 (en) 2008-03-13 2009-09-17 Epcos Ag Sensing device for detecting a physical quantity and method for producing said 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

Families Citing this family (4)

* 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.
US7128467B2 (en) 2004-03-18 2006-10-31 General Electric Company Thermistor probe assembly and method for positioning and moisture proofing thermistor probe assembly
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

Citations (3)

* 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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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
JP2658772B2 (en) * 1992-11-16 1997-09-30 日立電線株式会社 Temperature sensor sealing structure and sealing method

Patent Citations (3)

* 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

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE10356880A1 (en) * 2003-12-03 2005-07-07 Sontec Sensorbau Gmbh The electrical and/or optical sensor has the functional element within a shrouding, together with a sealing material, to give a gas- and vapor-tight protection against the ambient environment
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
WO2009112457A1 (en) 2008-03-13 2009-09-17 Epcos Ag Sensing device for detecting a physical quantity and method for producing said sensor
DE102008029192A1 (en) 2008-03-13 2009-09-24 Epcos Ag Sensor for detecting a physical quantity and method for manufacturing the sensor
US9370887B2 (en) 2008-03-13 2016-06-21 Epcos Ag Sensing device for detecting a physical quantity and method for producing said 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

Also Published As

Publication number Publication date
ATE225087T1 (en) 2002-10-15
EP0691705A1 (en) 1996-01-10
DE4423985C2 (en) 2002-04-04
TW387640U (en) 2000-04-11
EP0691705B1 (en) 2002-09-25
DE59510387D1 (en) 2002-10-31
JP2815555B2 (en) 1998-10-27
JPH0869904A (en) 1996-03-12

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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