EP2545351A1 - Raccordement électrique encapsulé - Google Patents

Raccordement électrique encapsulé

Info

Publication number
EP2545351A1
EP2545351A1 EP11707841A EP11707841A EP2545351A1 EP 2545351 A1 EP2545351 A1 EP 2545351A1 EP 11707841 A EP11707841 A EP 11707841A EP 11707841 A EP11707841 A EP 11707841A EP 2545351 A1 EP2545351 A1 EP 2545351A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
electrical connection
encapsulated electrical
sensor
hollow body
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.)
Withdrawn
Application number
EP11707841A
Other languages
German (de)
English (en)
Inventor
Hendrik Blum
Heiko Lantzsch
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.)
Tesona GmbH and Co KG
Original Assignee
Tesona 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 Tesona GmbH and Co KG filed Critical Tesona GmbH and Co KG
Publication of EP2545351A1 publication Critical patent/EP2545351A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/08—Protective devices, e.g. casings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
    • G01K7/023—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples provided with specially adapted connectors
    • 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
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
    • H01R13/5808—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part formed by a metallic element crimped around the cable
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K2205/00—Application of thermometers in motors, e.g. of a vehicle
    • G01K2205/04—Application of thermometers in motors, e.g. of a vehicle for measuring exhaust gas temperature
    • 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
    • H01R4/70—Insulation of connections

Definitions

  • the invention relates to a sealed electrical connection for in particular thermally and / or pressure side claimed sensors, such.
  • the local sensor serves to determine a physical quantity in a measuring volume.
  • the measuring sensor comprises a sensor element, a tube or a rod, on whose end directed into the measuring volume the sensor element is mounted and which receives the electrical connecting lines necessary for the connection of the sensor element.
  • a fastening sleeve is provided, through which the tube or rod is performed and attachable to the housing.
  • a circumferential gap is formed, wherein a glass filling, which is located in the gap between the fastening sleeve and the tube, the gas-tight connection is used.
  • the connecting leads of the previously known probe are contacted with connecting leads of a cable and are electrically insulated against each other at least in the region of these connections.
  • connection protection sleeve has an insertion for the cable. This introduction is by a curl of the connection protection sleeve reduced cross-section, ie pressed, so that the cable with the connection protection sleeve firmly connected and the introduction is sealed.
  • the fastening sleeve itself can be fitted with a hollow nut on a housing or assembly, e.g. be fixed to an exhaust pipe.
  • this connection comprises a tube or a sleeve, at the end of the measuring point at least one sensor is befindlich. Connecting leads are led from the sensor to the end remote from the measuring location via the tube or the sleeve, wherein the connecting leads of the at least one sensor which are electrically insulated from one another are connected to a cable, in particular a prefabricated cable, wherein the connecting region is surrounded by a protective arrangement. The prefabricated cable then sets the electrical connection between the sensor and a signal processing and evaluation unit.
  • a molded body with separating webs for the spaced fixing of the connecting line ends and of the cable is located at the connection point between the connecting line and the cable, wherein the shaped body additionally has a mechanically damping, i. having vibration damping enclosure.
  • the cable passes through at least two spaced bushes which receive a flexible sealing insert in their spacing space.
  • the protective arrangement is designed as a metallic hollow body, which extends from the outer of the bushes towards the tube or to the sleeve of the sensor and has a plurality of compression sections.
  • the end of the metallic hollow body directed towards the measuring location is connected to the likewise preferably metallic tube or the sleeve in a material-locking manner, in particular sealingly by welding or soldering.
  • the technology of laser welding is used here.
  • Adjacent to the cohesive connection section is a first compression section, which acts on the tube or the sleeve.
  • first compression section Adjacent to the cohesive connection section is a first compression section, which acts on the tube or the sleeve.
  • the likewise sleeve-like protection arrangement with the metallic tube of the preferably used jacket thermocouple is connected over a large area and relieves the laser weld, so here is a functional separation with the result that the laser weld primarily serves the sealing and compression in the first compression section primarily the power ,
  • the metallic hollow body In the region of the molded body with wrapping, the metallic hollow body has a widening. Unwanted pressure forces on the local electrical connection section are avoided.
  • the shaped body may be formed, for example, as a silicone material molded body with integrated dividing webs.
  • a second crimping section is formed between the hollow body and the inner one of the aforementioned bushings.
  • a third crimping section is located between the hollow body and the flexible sealing insert.
  • the seal has rubber-elastic properties and is made, for example, from a methyl-vinyl-sil icon.
  • the seal is in its longitudinal extension direction over a large area on the inside of the hollow body and can extend to both sides towards the bushes.
  • a fourth crimping portion is formed between the hollow body and the outer sleeve.
  • the outer sleeve may have in one embodiment of the invention, a projecting collar and means for fixing a strain relief.
  • strain relief can be realized here with a so-called multiple, in particular six-fold compression.
  • the figure shows a schematic diagram in partial section of a jacket thermocouple with inventive protection arrangement in the connection area.
  • a jacket thermocouple located in a protective housing 11, which can be inserted by means of a pressure screw 12 in a bore of an exhaust system (not shown).
  • Part of the jacket thermocouple is a metallic tube 1, run in the interior of connecting cables.
  • a molded silicone body 7 is used with separating webs in order to bring about a corresponding tracking resistance as well as a mechanical relief of the connection point.
  • the molded body 7 may also be surrounded by a tubular wrapping part 8.
  • shrink tubes 9 in the region of the connection point.
  • the protective arrangement according to the invention consists of a metallic hollow body 3 of, for example, cylindrical contour.
  • the cable 2 extends through at least two spaced bushings 4 and 6, which in their distance space a flexible sealing insert 5, z. B. consisting of a methyl-vinyl-silicone record.
  • the protective arrangement 3 extends in the mounted state of the outer 4 of the bushings to the tube 1 and has a plurality of compression sections a to e.
  • the end of the metallic hollow body 3 directed towards the measuring location is bonded to the tube or sleeve 1 in a material-locking manner, in particular by laser welding (reference f).
  • This cohesive connection section f is adjoined by a first compression section e, which acts on the outer surface of the tube or the sleeve 1.
  • the metallic hollow body 3 has a diameter widening.
  • a second compression section d is formed between the hollow body 3 and the inner sleeve 6.
  • a third connecting portion is located between the hollow body 3 and the flexible sealing insert fifth
  • a fourth connecting portion is provided between the hollow body 3 and the outer sleeve 4.
  • the sealing insert 5 is kept at a distance from the bushes 4 and 6 and can expand into the remaining distance. It is essential that the longitudinal extent of the sealing insert 5 and the resulting outer surface seals optimally with the inner surface in the section c of the metallic hollow body 3.
  • the geometry of the molded body 7 takes into account the manner of forming the joint at location 10, e.g. by crimping or by slice technique.
  • the cable 2 is designed, for example, as a thermoelectric cable according to IEC 60584.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

L'invention concerne un raccordement électrique encapsulé, pour des capteurs soumis notamment à des contraintes thermiques ou de pression, tels que par exemple, des capteurs de mesure dans une dérivation de gaz d'échappement de moteurs, en particulier des éléments thermiques à enveloppe, comprenant un tube ou un manchon, dont l'extrémité dirigée vers le point de mesure porte au moins un capteur, des conducteurs de connexion étant dirigés, via le tube ou le manchon, vers l'extrémité située à distance du point de mesure. En outre, les conducteurs de connexion d'au moins un capteur, isolés électriquement entre eux sont raccordés avec un câble confectionné, la zone de raccordement étant entourée d'un dispositif de protection. L'invention est caractérisée en ce qu'il est prévu, au point de raccordement, un corps moulé présentant des nervures de séparation, pour la fixation à distance, des extrémités des conducteurs de connexion et du câble, et en ce que le corps moulé présente une enveloppe mécaniquement amortissante. Le câble d'étend à travers au moins deux manchons à distance entre eux, lesquels présentent dans leur zone d'espacement, une garniture d'étanchéité souple. Le dispositif de protection est réalisé sous la forme d'un corps creux métallique qui s'étend, de l'extérieur des manchons jusqu'au tube, ou jusqu'au manchon du capteur, et qui présente plusieurs sections de compression.
EP11707841A 2010-03-09 2011-03-08 Raccordement électrique encapsulé Withdrawn EP2545351A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010010740 2010-03-09
DE201010034427 DE102010034427A1 (de) 2010-03-09 2010-08-16 Gekapselter elektrischer Anschluss für insbesondere thermisch und/oder druckseitig beanspruchte Sensoren
PCT/EP2011/053437 WO2011110541A1 (fr) 2010-03-09 2011-03-08 Raccordement électrique encapsulé

Publications (1)

Publication Number Publication Date
EP2545351A1 true EP2545351A1 (fr) 2013-01-16

Family

ID=44009954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11707841A Withdrawn EP2545351A1 (fr) 2010-03-09 2011-03-08 Raccordement électrique encapsulé

Country Status (3)

Country Link
EP (1) EP2545351A1 (fr)
DE (1) DE102010034427A1 (fr)
WO (1) WO2011110541A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9409327B2 (en) * 2013-03-09 2016-08-09 Ctb, Inc. Grain bin sensor cable forming method
DE102020102810B4 (de) 2020-02-04 2022-03-31 Tesona Gmbh & Co. Kg Verfahren zur Bearbeitung eines Mantelthermoelementkabels mit einem Strahlschneider

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849518A (en) * 1953-10-12 1958-08-26 Charles M Macdonald Temperature indicator
US3513703A (en) * 1967-10-09 1970-05-26 Unitwin Corp Exhaust gas temperature analyzing system and method
JPS57119250A (en) 1981-01-19 1982-07-24 Nissan Motor Co Ltd Oxygen sensor element holder
US4403207A (en) 1981-10-26 1983-09-06 General Motors Corporation Durable titania exhaust gas sensor
JP2621488B2 (ja) * 1989-07-11 1997-06-18 株式会社デンソー 高温用サーミスタ素子
JP2708915B2 (ja) 1989-11-25 1998-02-04 日本特殊陶業株式会社 ガス検出センサ
DE102006015427B3 (de) 2006-03-31 2007-11-29 Anton Gensler Gmbh Messfühler für Hochtemperaturanwendungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011110541A1 *

Also Published As

Publication number Publication date
DE102010034427A1 (de) 2011-10-06
WO2011110541A1 (fr) 2011-09-15

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