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DE19631376C1 - Manufacturing moisture tight temperature sensor esp. for air conditioning, cooling, refrigeration systems - Google Patents

Manufacturing moisture tight temperature sensor esp. for air conditioning, cooling, refrigeration systems

Info

Publication number
DE19631376C1
DE19631376C1 DE1996131376 DE19631376A DE19631376C1 DE 19631376 C1 DE19631376 C1 DE 19631376C1 DE 1996131376 DE1996131376 DE 1996131376 DE 19631376 A DE19631376 A DE 19631376A DE 19631376 C1 DE19631376 C1 DE 19631376C1
Authority
DE
Germany
Prior art keywords
thermistor
temperature sensor
lead
cladding
line
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
DE1996131376
Other languages
German (de)
Inventor
Gerald Kloiber
Guenther Ruhri
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 DE1996131376 priority Critical patent/DE19631376C1/en
Application granted granted Critical
Publication of DE19631376C1 publication Critical patent/DE19631376C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/08Protective devices, e.g. casings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Thermistors And Varistors (AREA)

Abstract

The method of manufacturing provides a water-tight temperature sensor. The sensor has a thermistor (1) esp. a heat conductor (low temp. constant resistor) fastening to a plastic cladding lead (3). The thermistor is electrically and mechanically fastened to a bare end of the lead . The outer cladding (4) is removed from the free ends of the lead. The free ends (6) of the lead are then held tightly in a traction device. The latter exerts a pulling force such that the inner insulated leads are pushed against the cladding until the thermistor is located completely in the outer cladding. The open end of the cladding is then welded water-tight.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen eines feuchtedichten Temperatursensors mit einem an einer Kunst­ stoffmantelleitung befestigten Thermistor, insbesondere Heiß­ leiter, indem der Thermistor elektrisch und mechanisch an einem abisolierten Leitungsende befestigt wird.The invention relates to a method for producing a moisture-proof temperature sensor with an art cloth sheathed thermistor, especially hot conductor by connecting the thermistor electrically and mechanically an stripped cable end is attached.

Auf dem Gebiet der Klimatechnik, insbesondere der Gefrier- und Kühlgerätetechnik, werden zur Temperaturerfassung feuchte- bzw. wasserdichte Temperatursensoren mit Anschluß­ leitungen benötigt.In the field of air conditioning technology, especially freezing and cooling technology, are used for temperature detection humidity or waterproof temperature sensors with connection lines needed.

Zur Zeit werden solche Sensoren meist in Kunststoff- oder Me­ tallhülsen mit verschiedenen Vergußmaterialien (z. B. Epoxyharze) vergossen. Im Bereich der Schnittstelle zwischen Leitung (Kabel) und Sensorgehäuse bzw. Verguß (in der Regel zwei unterschiedliche Kunststoffmaterialien) tritt das Pro­ blem der Abdichtung gegen Eintritt von Feuchtigkeit bzw. Was­ ser auf, so daß diese Systeme nicht dicht sind.At the moment such sensors are mostly in plastic or me tall sleeves with different potting materials (e.g. Epoxy resins). In the area of the interface between Pipe (cable) and sensor housing or potting (usually two different plastic materials) occurs the pro The sealing against the ingress of moisture or what water on, so that these systems are not tight.

Es wird versucht, diese Problem durch Aufbringen von zusätz­ lichen Schrumpfschläuchen, Dichtelementen oder durch zusätz­ liches Verkleben der Schnittstelle aufwendig und nur bedingt zufriedenstellend zu lösen.Attempting to solve this problem by applying additional Lichen shrink sleeves, sealing elements or by additional Gluing the interface is complex and only conditional to solve satisfactorily.

So ist aus JP 55-134325 (A) in "Patent Abstracts of Japan" Vol. 5/No. 1, 08. Januar 1981, P-34 ist ein Temperaturfühler bekannt, der an Zuleitungssdrähten befestigt ist, die von Silikonkautschuk umgeben sind. Der Temperaturfühler ist in einem Gehäuse aus Silikonkautschuk angeordnet, das mit einem ausgehärteten Silikonkautschuk gefüllt ist. JP 55-134325 (A) in "Patent Abstracts of Japan" Vol. 5 / No. 1, 08 January 1981, P-34 is known to be a temperature sensor Lead wires are attached by silicone rubber are surrounded. The temperature sensor is made in a housing Silicone rubber arranged with a cured Silicone rubber is filled.  

Aus der AT 205 770 ist ein Widerstandsthermometer bekannt, das in einem Metallrohr angeordnet ist. Das Metallrohr ist mit flüssigem Paraffin gefüllt und auf der Außenseite von einer dichten isolierenden Kunststoffhülle umgeben.A resistance thermometer is known from AT 205 770, which is arranged in a metal tube. The metal pipe is filled with liquid paraffin and on the outside of surrounded by a dense insulating plastic cover.

Aus der EP 0 691 705 A1 ist ein Verfahren zur Herstellung einer feuchtigkeitsdichten Verbindung einer elektrischen Leitung mit einem Thermistor bekannt, bei dem das Lei­ tungsende und der an diesem befindliche Thermistor mit einem am Leitungsmantelmaterial fest und dicht haftenden Kunst­ stoff, vorzugsweise einem Thermoplast, in einem ein- bzw. mehrstufigen Spritzvorgang umspritzt wird. EP 0 691 705 A1 describes a process for the production a moisture-proof connection of an electrical Line with a thermistor known, in which the Lei end of the line and the thermistor on it with a on the cable sheath material firmly and tightly adhering art material, preferably a thermoplastic, in a single or multi-stage injection molding process.  

Dieses Verfahren führt zwar zu feuchtedichten Verbindungen, ist aber technisch bedingt aufwendig und verteuert deshalb die Herstellung eines geeigneten feuchtedichten Temperatur­ sensors.Although this process leads to moisture-proof connections, is technically complex and therefore expensive the production of a suitable moisture-proof temperature sensors.

Aufgabe der vorliegenden Erfindung ist es daher, ein Verfah­ ren der eingangs genannten Art anzugeben, bei dem in einfa­ cher und kostengünstiger Weise ein feuchtedichter Temperatur­ sensor erhalten wird.The object of the present invention is therefore a method ren of the type mentioned, in which in simple a moisture-proof temperature sensor is obtained.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der äußere Mantel am freien Ende der Leitung entfernt wird, daß die freien Enden der Leitung in eine Zugvorrichtung gespannt werden, die eine Zugkraft derart ausübt, daß die inneren, isolierten Leiter gegen den Mantel verschoben werden bis sich der Thermistor vollständig im äußeren Mantel befindet, und daß das offene Ende des äußeren Mantels feuchtedicht ver­ schweißt wird.This object is achieved in that the outer jacket at the free end of the line is removed that the free ends of the line clamped in a pulling device which exerts a pulling force in such a way that the inner, insulated conductors against the sheath are moved up the thermistor is completely in the outer jacket, and that the open end of the outer jacket ver moisture-proof is welded.

Der Gegenstand der Erfindung wird im folgenden anhand von Ausführungsbeispielen erläutert.The object of the invention is described below with reference to Exemplary embodiments explained.

In der dazugehörenden Zeichnung zeigenShow in the accompanying drawing

Fig. 1 bis 3 die Herstellung eines feuchtedichten Tempera­ tursensors. Fig. 1 to 3, the production of a moisture-tight temperature sensor.

In der Fig. 1 ist ein Thermistor 1, vorzugsweise ein Heiß­ leiter dargestellt, der an abisolierten En­ den 2 einer elektrischen Leitung 3 befestigt ist. Die Befe­ stigung des Thermistors 1 geschieht durch eine geeignete Verbindungstechnik (z. B. Löten, Schweißen oder Crimpen), so daß der Thermistor 1 elektrisch und mechanisch fest mit den Leitungsenden 2 verbunden ist. Die Leitung 3 ist als Kunst­ stoffmantelleitung ausgebildet, die einen äußeren Mantel 4 aufweist, und im inneren zwei mit einer Aderisolation 5 ver­ sehene elektrische Leiter 6 besitzt. In Fig. 1, a thermistor 1 , preferably a thermistor is shown, which is attached to the stripped En 2 of an electrical line 3 . The BEFE stigung the thermistor 1 is done by a suitable connection technology (z. B. soldering, welding or crimping), so that the thermistor 1 is electrically and mechanically firmly connected to the line ends 2 . The line 3 is formed as a plastic sheathed line, which has an outer jacket 4 , and inside two ver with a wire insulation 5 has seen electrical conductor 6 .

Auf einer Seite sind die freien, abisolierten Enden 2 der elektrischen Leiter 6 mit dem Thermistor 1 in der geschilder­ ten Art verbunden.On one side, the free, stripped ends 2 of the electrical conductors 6 are connected to the thermistor 1 in the manner described.

Nach dem Anbringen des Thermistors 1 werden die beiden freien Enden der Leitung 3 in eine (in der Fig. 1 nicht darge­ stellte) geeignete Zugvorrichtung gespannt und eine Zugkraft F derart eingeleitet, daß sich die inneren, mit der Isolie­ rung 5 versehenen Leiter 6 gegen den Mantel 4 verschieben. Die Verschiebung erfolgt so lange bis das Ende 7 des Kunst­ stoffmantels 4 über den Thermistor 1 geschoben ist (siehe Fig. 2).After attaching the thermistor 1 , the two free ends of the line 3 are tensioned in a (not shown in FIG. 1 Darge) suitable traction device and a tensile force F is initiated such that the inner, provided with the insulation 5 conductor 6 against move the coat 4 . The shift takes place until the end 7 of the plastic jacket 4 is pushed over the thermistor 1 (see Fig. 2).

Abschließend wird, wie in der Fig. 3 dargestellt, das freie Ende 7 des Kunststoffmantels 4 feuchtedicht verschlossen. Dies kann durch einen einfachen Kunststoffschweißvorgang (z. B. Heizelementschweißen) geschehen, wobei die Form des Verschlusses abhängig von den verwendeten Schweißwerkzeugen ist.Finally, as shown in FIG. 3, the free end 7 of the plastic jacket 4 is closed moisture-tight. This can be done by a simple plastic welding process (e.g. heating element welding), the shape of the closure depending on the welding tools used.

Mit Hilfe des Verfahrens nach der Erfindung wird ein lei­ tungsgebundener, feuchte- bzw. wasserdichter Temperatursensor erhalten, der in einfacher und damit kostengünstiger Weise ohne Verwendung von zusätzlichen Materialien wie Kunststoff­ hülsen, Kleber, Schrumpfschläuchen oder Spritzgußmaterialien hergestellt wird.With the help of the method according to the invention, a lei tion-bound, moisture or waterproof temperature sensor get that in a simple and therefore inexpensive way without the use of additional materials such as plastic sleeves, glue, shrink sleeves or injection molding materials will be produced.

Claims (1)

Verfahren zum Herstellen eines feuchtedichten Temperatursen­ sors mit einem an einer Kunststoffmantelleitung befestigten Thermistor, insbesondere Heißleiter, indem der Thermistor elektrisch und mechanisch an einem abisolierten Leitungsende befestigt wird, dadurch gekennzeichnet, daß der äu­ ßere Mantel (4) am freien Ende der Leitung (3) entfernt wird, daß die freien Enden der Leitung (3) in eine Zugvorrichtung gespannt werden, die eine Zugkraft (F) derart ausübt, daß die inneren, isolierten Leiter (6) gegen den Mantel (4) verscho­ ben werden bis sich der Thermistor (1) vollständig im äußeren Mantel (4) befindet, und daß das offene Ende (7) des äußeren Mantels (4) feuchtedicht verschweißt wird.Method for producing a moisture-proof temperature sensor with a thermistor attached to a plastic sheathed line, in particular thermistor, in that the thermistor is fastened electrically and mechanically to a stripped line end, characterized in that the outer sheath ( 4 ) at the free end of the line ( 3 ) is removed that the free ends of the line ( 3 ) are tensioned in a traction device, which exerts a tensile force (F) such that the inner, insulated conductor ( 6 ) against the jacket ( 4 ) are moved until the thermistor ( 1 ) completely in the outer jacket ( 4 ), and that the open end ( 7 ) of the outer jacket ( 4 ) is welded moisture-tight.
DE1996131376 1996-08-02 1996-08-02 Manufacturing moisture tight temperature sensor esp. for air conditioning, cooling, refrigeration systems Expired - Fee Related DE19631376C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996131376 DE19631376C1 (en) 1996-08-02 1996-08-02 Manufacturing moisture tight temperature sensor esp. for air conditioning, cooling, refrigeration systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996131376 DE19631376C1 (en) 1996-08-02 1996-08-02 Manufacturing moisture tight temperature sensor esp. for air conditioning, cooling, refrigeration systems

Publications (1)

Publication Number Publication Date
DE19631376C1 true DE19631376C1 (en) 1997-11-20

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Cited By (2)

* 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
DE102019204308A1 (en) * 2019-03-28 2020-10-01 Siemens Aktiengesellschaft Arrangement comprising a control device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT205770B (en) * 1957-05-29 1959-10-10 Norma Gmbh Resistance thermometer
EP0691705A1 (en) * 1994-07-07 1996-01-10 SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG Method for making a moisture sealed connection between an electrical lead an a thermistor of a temperature sensor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT205770B (en) * 1957-05-29 1959-10-10 Norma Gmbh Resistance thermometer
EP0691705A1 (en) * 1994-07-07 1996-01-10 SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG Method for making a moisture sealed connection between an electrical lead an a thermistor of a temperature sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP 55-134325 (A) in Patents Abstracts of Japan, Vol. 5/No. 1, 8. Januar 1981, P-43 *

Cited By (3)

* 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
EP1512951A1 (en) * 2003-09-03 2005-03-09 Epcos Ag Method of manufacturing an impervious sensor
DE102019204308A1 (en) * 2019-03-28 2020-10-01 Siemens Aktiengesellschaft Arrangement comprising a control device

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: EPCOS AG, 81541 MUENCHEN, DE

8339 Ceased/non-payment of the annual fee