EP0931321B1 - Kontaktgruppe mit einem kaltleiter - Google Patents

Kontaktgruppe mit einem kaltleiter Download PDF

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Publication number
EP0931321B1
EP0931321B1 EP97909157A EP97909157A EP0931321B1 EP 0931321 B1 EP0931321 B1 EP 0931321B1 EP 97909157 A EP97909157 A EP 97909157A EP 97909157 A EP97909157 A EP 97909157A EP 0931321 B1 EP0931321 B1 EP 0931321B1
Authority
EP
European Patent Office
Prior art keywords
contact
ptc thermistor
points
elements
contact assembly
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 - Lifetime
Application number
EP97909157A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0931321A1 (de
Inventor
Bernd Gruhn
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
Publication of EP0931321A1 publication Critical patent/EP0931321A1/de
Application granted granted Critical
Publication of EP0931321B1 publication Critical patent/EP0931321B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/1406—Terminals or electrodes formed on resistive elements having positive temperature coefficient
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/01—Mounting; Supporting
    • H01C1/014—Mounting; Supporting the resistor being suspended between and being supported by two supporting sections

Definitions

  • the invention relates to a contact group with a PTC thermistor according to the preamble of patent claim 1.
  • PTC resistors For example, in refrigeration units of refrigerators, there are Electric motors on whose output shaft the Cooling compressor sits, so-called engine start thermistor (PTC resistors) upstream.
  • PTC resistors engine start thermistor
  • Each in the startup or Starting phase of the electric motor increases the resistance of the PTC thermistor of a few ohms, for example 10 ⁇ when cold in a very short time, often within a few seconds in relation to the cold condition with very high resistance values, which are in the order of 20,000 ⁇ , for example,
  • the power supply in such PTC thermistors preferably via spring contacts, which are applied to the PTC thermistor with a certain pressure the risk that if the PTC thermistor breaks, for example the current-carrying spring contacts in contact with each other come and this creates a short circuit or that more or less large fragments of a broken PTC thermistor still have contact with each other and about each other fragments in contact on the order of several amperes flow.
  • EP 0 618 594 A1 describes a contact group with a PTC thermistor according to the preamble of claim 1 known. At this Arrangement there is a risk that even after a break of the PTC thermistor fragments between contact springs and preloaded Parts remain trapped, causing the current to flow in the fragments are not interrupted, so that is Smoldering fires can be triggered, which may Refrigerator fire result.
  • the object of the invention is therefore to have a contact group to improve a PTC thermistor so that a possible high security is guaranteed.
  • this task is through a contact group with a PTC thermistor by the features of claim 1 solved.
  • leakage currents also arise from the fact that individual Fragments of the broken PTC thermistor are still in contact with each other have, whereby this is heated accordingly and it is a smoldering fire again, at worst even can catch fire.
  • the contact elements preferably as one piece Elements made of contact springs and preloaded parts educated. This will not only be in the places where the contact springs rest on the PTC thermistor, but also on the places where the prestressed parts on the PTC thermistor appropriate forces exerted on them.
  • the PTC thermistor breaks if cracks appear, at least in two Fragments such that the two fragments of the broken Component no longer have any contact with each other. Therefore can no longer currents, especially no leakage currents occur and thus the occurrence of smoldering fires or Fires prevented.
  • the locations on the PTC thermistor are on which the prestressed parts are in contact with, electrically insulated executed.
  • Fig.1 is a schematic view of a contact group on Example of one provided in an engine starting device PTC thermistor 3 shown.
  • the PTC thermistor 3 is about recordings 2a and 2b held in a housing 1. Furthermore, in the housing 1 two, for example, U-shaped contact holders 6a and 6b are provided.
  • each of the contact holders 6a and 6b 5a and 5b There is a contact element on each of the contact holders 6a and 6b 5a and 5b attached.
  • Each of the contact elements 5a and 5b has two resilient areas 51a and 52a and 51b and 52b, the one spring area 51a or 51b as a contact spring and the other resilient area 52a or 52b as pre-stressed part serves.
  • the contact springs 51a, 51b and have prestressed parts 52a, 52b, each made in one piece.
  • Both contact elements 5a and 5b are biased so that each of the resilient areas 51a, 52a and 51b, 52b, i.e. the Contact springs 51a, 51b or the prestressed parts 52a, 52b, 3 forces are exerted on the PTC thermistor.
  • the 51a, 51b exerted forces act on the contact points 3a, 3b PTC thermistor 3.
  • the of the prestressed parts 52a and 52b Exerted forces act in the embodiment shown in Fig.1 at isolated points 4a or 4b on the PTC thermistor 3.
  • the points 4a and 4b are, for example, by Electrically insulated mica.
  • the contact group shown in Figure 1 is after a break of the PTC thermistor 3 shown. If the PTC 3 breaks along breaking edges 30 ', for example the two PTC thermistor fragments 3 'and 3 "for example in the position shown in Fig.2 rotated. A corresponding Rotation is caused by the PTC fragments 3 'and 3 "of the resilient portions 51a and 52b or 52a and 51b respectively forces at contact points 3a, 4b and 3b, 4a are exercised, which are offset from one another. Therefore act on the PTC thermistor fragments 3 'and 3 "torques M 'or M "clockwise, which is indicated by the reference numerals M 'and M "registered arrows is displayed.
  • the recordings 2a and 2b which act as a holder for the PTC thermistor 3 are used so that they break of the PTC thermistor 3 also break and thus twisting of the two PTC thermistor fractions 3 'and 3 "are not hindered becomes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Thermistors And Varistors (AREA)
  • Thermally Actuated Switches (AREA)
  • Non-Adjustable Resistors (AREA)
  • Adjustable Resistors (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Electronic Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Organic Insulating Materials (AREA)
  • Inert Electrodes (AREA)
  • Details Of Resistors (AREA)
EP97909157A 1996-09-20 1997-09-18 Kontaktgruppe mit einem kaltleiter Expired - Lifetime EP0931321B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19638631 1996-09-20
DE19638631A DE19638631C2 (de) 1996-09-20 1996-09-20 Kontaktgruppe für Halbleiter-Widerstände, wie Kaltleiter
PCT/DE1997/002118 WO1998012713A1 (de) 1996-09-20 1997-09-18 Kontaktgruppe für halbleiter-widerstände, wie kaltleiter

Publications (2)

Publication Number Publication Date
EP0931321A1 EP0931321A1 (de) 1999-07-28
EP0931321B1 true EP0931321B1 (de) 2000-12-20

Family

ID=7806376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97909157A Expired - Lifetime EP0931321B1 (de) 1996-09-20 1997-09-18 Kontaktgruppe mit einem kaltleiter

Country Status (12)

Country Link
US (1) US6160473A (ja)
EP (1) EP0931321B1 (ja)
JP (1) JP2001500672A (ja)
KR (1) KR20010029532A (ja)
CN (1) CN1231054A (ja)
AT (1) ATE198242T1 (ja)
BR (1) BR9712835A (ja)
DE (2) DE19638631C2 (ja)
DK (1) DK0931321T3 (ja)
ES (1) ES2153185T3 (ja)
MY (1) MY133747A (ja)
WO (1) WO1998012713A1 (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100231796B1 (ko) * 1995-11-07 1999-12-01 무라타 야스타카 고장시에 내부 소자의 파괴를 줄이는 전자 장치
DE19824781B4 (de) * 1998-06-03 2005-05-19 Epcos Ag Elektrisches Bauelement, insbesondere Schaltkaltleiter
JP3567854B2 (ja) * 2000-05-18 2004-09-22 株式会社村田製作所 電子部品
JP3811804B2 (ja) * 2003-08-26 2006-08-23 株式会社センサータ・テクノロジーズジャパン モータ始動用リレーおよびそれを用いた電動圧縮機
JP5274770B2 (ja) * 2006-12-27 2013-08-28 東京パーツ工業株式会社 小型モータ
DE102010012041B4 (de) * 2009-11-19 2015-02-05 Epcos Ag Bauelement
US8174354B2 (en) * 2010-07-23 2012-05-08 Sensata Technologies Massachusetts, Inc. Method and apparatus for control of failed thermistor devices
EP2578624A1 (en) * 2011-10-06 2013-04-10 Henkel Italia S.p.A. Polymeric PTC thermistors
CN103489551B (zh) * 2012-06-14 2018-06-12 森萨塔科技（常州）有限公司 电子器件
JP6366906B2 (ja) * 2012-06-14 2018-08-01 センサータ テクノロジーズ マサチューセッツ インコーポレーテッド 電子装置
CN202615954U (zh) * 2012-06-14 2012-12-19 森萨塔科技麻省公司 电子器件
US10984927B2 (en) * 2019-05-03 2021-04-20 Electrica S.R.L. PTC thermistor switch for electric motors

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431983A (en) * 1980-08-29 1984-02-14 Sprague Electric Company PTCR Package
JPH01143203A (ja) * 1987-11-27 1989-06-05 Murata Mfg Co Ltd 有機正特性サーミスタ
JPH0378455A (ja) * 1989-08-18 1991-04-03 Matsushita Refrig Co Ltd モータの起動装置
US5117089A (en) * 1990-04-02 1992-05-26 Emerson Electric Co. Structural support for hermetic terminal assembly heater apparatus
JP2611512B2 (ja) * 1990-07-19 1997-05-21 株式会社村田製作所 過電流保護部品
JP2616174B2 (ja) * 1990-07-19 1997-06-04 株式会社村田製作所 過電流保護部品
JP2582338Y2 (ja) * 1993-03-29 1998-09-30 株式会社村田製作所 サーミスタ装置
JPH08203704A (ja) * 1995-01-27 1996-08-09 Tdk Corp 正特性サーミスタ装置

Also Published As

Publication number Publication date
DE19638631A1 (de) 1998-04-02
DK0931321T3 (da) 2001-02-12
CN1231054A (zh) 1999-10-06
ES2153185T3 (es) 2001-02-16
DE59702793D1 (de) 2001-01-25
WO1998012713A1 (de) 1998-03-26
DE19638631C2 (de) 2002-09-26
BR9712835A (pt) 1999-11-16
JP2001500672A (ja) 2001-01-16
KR20010029532A (ko) 2001-04-06
ATE198242T1 (de) 2001-01-15
EP0931321A1 (de) 1999-07-28
MY133747A (en) 2007-11-30
US6160473A (en) 2000-12-12

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