EP2183752B1 - Elektrische schutzvorrichtung - Google Patents

Elektrische schutzvorrichtung Download PDF

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Publication number
EP2183752B1
EP2183752B1 EP08786953A EP08786953A EP2183752B1 EP 2183752 B1 EP2183752 B1 EP 2183752B1 EP 08786953 A EP08786953 A EP 08786953A EP 08786953 A EP08786953 A EP 08786953A EP 2183752 B1 EP2183752 B1 EP 2183752B1
Authority
EP
European Patent Office
Prior art keywords
housing
ptc thermistor
protective device
connecting wires
components
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.)
Active
Application number
EP08786953A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2183752A1 (de
Inventor
Werner Kahr
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 EP2183752A1 publication Critical patent/EP2183752A1/de
Application granted granted Critical
Publication of EP2183752B1 publication Critical patent/EP2183752B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/022—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being openable or separable from the resistive element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/008—Thermistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient

Definitions

  • the invention relates to an electrical protection device.
  • An object to be solved is to provide a protective device that can be produced inexpensively and meets the requirements for telecommunications equipment.
  • the invention relates to a protective device which has two disk-shaped PTC components, wherein the PTC components are arranged in a common housing.
  • the housing has two opposite sides in each case a cylindrical opening, wherein the size of the openings corresponds to the dimensions of the PTC components such that the PTC components are inserted through the openings in the housing.
  • the PTC components are arranged in the housing electrically isolated from each other.
  • the two PTC thermistors each have two connecting wires by means of which the PTC components are locked in the housing.
  • the PTC components are arranged in the housing with the end faces to each other.
  • the PTC thermistors preferably have a round base, they can However, also have a rectangular or any other conceivable shape as a base.
  • the PTC thermistors are inserted through the openings in the housing, so that the PTC components are fixed in the housing.
  • the housing is integrally formed.
  • the protection device consists of only one housing and two PTC thermistors, which are inserted into the openings of the housing. As a result, a cost-effective production of the protective device is possible in which only a few manufacturing steps are required.
  • the housing is preferably made of an electrically insulating and temperature-resistant plastic.
  • the outer dimensions of the housing project beyond the dimensions of the PTC components by only a few tenths of a millimeter. This is an economical and over the prior art, a low height feasible. With a disk diameter of the PTC thermistor components of, for example, 8 mm results in a height of about 8.5 mm.
  • the protective device has a one-piece housing, which is provided with no additional cover.
  • the protective device can be produced inexpensively.
  • the PTC thermistors are laterally inserted into the openings of the protective device, wherein the ends of the leads of the PTC elements after insertion only need to be bent so that a sufficient fixation of the PTC thermistor components is ensured in the housing.
  • a time-consuming and costly threading of the connecting wires in specially provided bushings in the housing is eliminated here, with required distances of the terminals are achieved by the special design of the housing.
  • the size of the openings in the housing is variable according to the PTC components used or adapted to the particular PTC thermistor components used.
  • the PTC components are provided on opposite faces with connecting wires and electrically contacted.
  • the connecting wires of the PTC components preferably run parallel to their Strinclair.
  • the PTC thermistors preferably each have at the opposite end faces two offset by 90 ° arranged connecting wires.
  • the connecting wires are attached to the vertical at an angle of about 135 ° down to the end faces of the PTC components.
  • the connecting wires of the PTC components are angled in the region of the wire center preferably at 135 ° parallel to the end faces of the PTC components.
  • the ends of the connecting wires is an area that is bent by about 90 °.
  • the ends of the connecting wires bent by 90 ° serve to lock the PTC components in the housing of the protective device.
  • the connecting wires of the PTC components thus serve both for contacting to the outside and at the same time by your special wire guide for additional fixation of the PTC components in the housing.
  • the PTC components are not only locked by the clamp in the openings of the housing, but also by means of their connecting wires preferably on the underside of the housing.
  • the housing has recesses on the bottom for receiving the connecting wires of the PTC components.
  • the housing In the region of the openings provided for the PTC elements, the housing has areas which serve as a stop for the connecting wires of the PTC components which are arranged on the front side in the direction of the housing interior as well as on the outwardly facing end faces of the PTC thermistor components when the PTC elements are inserted into the openings.
  • the cylindrical openings in the housing which serve to accommodate the PTC components, have at the downwardly facing region recesses, which serve as a free space for the insertion of the connecting wires during insertion of the PTC components.
  • the PTC thermistors can be inserted with the leads, the connecting wires then come to rest on the attacks, the ends of the leads of PTC thermistor elements, which then bent by 90 ° be used to additionally lock the PTC thermistors in the housing. Furthermore, the angled ends of the PTC components of the connecting wires serve to make electrical contact with the protective device. The angled ends of the leads of the two PTC elements are preferably arranged to be aligned to a pitch of SMD terminals.
  • the protection device can be integrated into any electrical circuit.
  • the protection device is used as a so-called Weg Pair Protector, in which the protection device protects telecommunications equipment from defects or a line failure caused by disturbances on the telephone line. Potential interference may be caused by injected surges or currents due to external events such as a lightning strike on the telephone line or induced overvoltages due to adjacent line-carrying conductors or due to line contact
  • the attachment of the PTC thermistors in the opening of the housing is effected by a clamping, wherein the opening of the housing may have clamping ribs.
  • the opening of the housing is provided in the outer region with a conical projection or an insertion bevel, which facilitate the insertion of the PTC thermistor elements in the opening, wherein at the same time provided for a sufficient clamping of the PTC thermistors in the opening.
  • the protection device is especially suitable for use in telecommunications equipment as a telecom pair protector.
  • the protection device complies with the ITU (International Telecommunication Union) safety regulations in accordance with the ITU T-K20 and K21 telephone equipment safety regulations, whereby the protective device is therefore suitable for the specifications and for the protective elements in use.
  • ITU International Telecommunication Union
  • the electrical dimensioning of the PTC ceramics takes place on an occasion-related basis, with all the properties required for the telecommunication protection devices being adjustable. If necessary, the installation space size must be adjusted if different disc diameters are used.
  • FIG. 1 a first embodiment of the protection device is shown in a three-dimensional view from the front, in which two PTC components 1 are arranged in a common one-piece housing 2.
  • the PTC thermistor components 1 are arranged in openings 3 of the housing 2.
  • the openings 3 of the housing 2 preferably have a size which corresponds to the diameter of the PTC thermistor components 1.
  • the opening 3 additional clamping ribs 6, which serve to clamp the PTC thermistor components 1 in the opening 3 of the housing 1.
  • the connecting wires 4 of the PTC thermistor components 1 are each electrically contacted at the end faces 11 of the PTC thermistor components 1.
  • the two connecting wires 4 of a PTC thermistor device 1 are each arranged parallel to the end faces 11 and offset by 90 ° to each other.
  • the connecting wires 4 In the middle region 41, the connecting wires 4 have a 135 ° angle, wherein the connecting wires 4 extend parallel to the end faces 11 of the PTC thermistor components 1.
  • the Ends 42 of the leads 4 are bent by 90 ° and locked to the bottom 21 of the housing.
  • FIG. 2 is a three-dimensional view of the protection device shown in which the view is directed to the bottom.
  • the housing 2 two PTC thermistors 1 are arranged.
  • the connecting wires 4 of the PTC thermistor components 1 are guided on the underside 21 of the housing 2 to the outside.
  • the openings 3 On the underside of the housing 2, the openings 3 have a downwardly open area.
  • the open area has step-like recesses 5, in which the connecting wires 4 of the PTC thermistor components 1 are led to the outside.
  • the ends 42 of the connecting wires 4 are angled at 90 ° on the underside and serve to lock the PTC thermistor components 1 in the housing 2.
  • the ends 42 of the connecting wires 4 preferably have a predetermined distance, which corresponds to a predetermined SMD pitch.
  • FIG. 3 is a schematic view of the underside of a protective device shown.
  • the underside 21 of the housing 2 has two openings 3 on two opposite sides.
  • a PTC thermistor device 1 is arranged in each case, which has been inserted into the openings 3.
  • the connecting wires 4 of the PTC thermistor components 1 point in the direction of the lower side 21 of the housing 2.
  • the open region 5 has step-like recesses 5 in which the connecting wires 4 of the PTC thermistor components 1 are led to the outside.
  • the openings 3 have recesses 5, which are shaped such that when inserting the PTC thermistor elements 1, the angled connecting wires 4 with the ends 42 in the two lateral recesses 5 come to rest.
  • the ends 42 of the connecting wires 4 abut against the lower edge of the housing 2, so that the ends 42 of the connecting wires 4 provide for an additional locking of the PTC thermistor components 1 in the housing 2.
  • the recesses 5 preferably have a plurality of steps, wherein a first 51 and a second 52 of the steps of the recesses 5 serve for the ends 42 of the connecting wires 4 as a lateral boundary. Due to the position of the first 51 and second 52 stages of the recesses 5, the positioning of the external contact of the protective device is ensured at predetermined SMD contacts simultaneously.
  • the ends 42 of the connecting wires 4 thus preferably have the predetermined distance, which would correspond to the SMD grid.
  • the protective device is thus adapted to a required SMD grid size.
  • the ends 42 of the connecting wires 4 are bent at the bottom by 90 ° and are used in addition to the contacting of the PTC thermistor components 1 to the outside for locking the PTC thermistor components 1 in the housing. 2
  • FIG. 4 shows a schematic view of a protective device from the front.
  • a housing 2 which has two openings 3, of which only one opening 3 is visible, in the openings 3 of the housing 2, preferably each a PTC thermistor device 1 are arranged.
  • the openings 3 of the housing 2 preferably have a size which corresponds to the diameter of the PTC thermistor components 1.
  • the opening 3 additional clamping ribs 6, which is for clamping the PTC components 1 in the opening 3 of the housing 1 serve.
  • the connecting wires 4 of the PTC thermistor components 1 are each electrically contacted at the end faces 11 of the PTC thermistor components 1.
  • the two connecting wires 4 of a PTC thermistor device 1 are each arranged parallel to the end faces 11 and offset by 90 ° to each other. In the central region 41, the connecting wires 4 have a 135 ° angle parallel to the end faces 11 of the PTC thermistor components 1.
  • the ends 42 of the connecting wires 4 are bent by 90 ° and locked to the bottom 21 of the housing.
  • the invention is not limited to the number of elements shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Ceramic Engineering (AREA)
  • Thermistors And Varistors (AREA)
  • Telephone Function (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP08786953A 2007-09-06 2008-08-06 Elektrische schutzvorrichtung Active EP2183752B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007042358A DE102007042358B3 (de) 2007-09-06 2007-09-06 Elektrische Schutzvorrichtung
PCT/EP2008/060347 WO2009033896A1 (de) 2007-09-06 2008-08-06 Elektrische schutzvorrichtung

Publications (2)

Publication Number Publication Date
EP2183752A1 EP2183752A1 (de) 2010-05-12
EP2183752B1 true EP2183752B1 (de) 2012-10-17

Family

ID=39869079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08786953A Active EP2183752B1 (de) 2007-09-06 2008-08-06 Elektrische schutzvorrichtung

Country Status (8)

Country Link
US (1) US8004385B2 (ru)
EP (1) EP2183752B1 (ru)
JP (1) JP5220112B2 (ru)
KR (1) KR101447309B1 (ru)
CN (1) CN101796594B (ru)
DE (1) DE102007042358B3 (ru)
RU (1) RU2476946C2 (ru)
WO (1) WO2009033896A1 (ru)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101650963B1 (ko) * 2008-06-06 2016-08-24 타이코 일렉트로닉스 저팬 지.케이. Ｐｔｃ 디바이스 및 전기 장치
DE102018205280A1 (de) * 2018-04-09 2019-10-10 Mahle International Gmbh Kaltleitermodul
US20230260681A1 (en) * 2020-05-29 2023-08-17 Tdk Electronics Ag Electrical Component Comprising an Electrical Resistor
CN113744942B (zh) * 2020-05-29 2023-11-21 东电化电子元器件(珠海保税区)有限公司 包括电阻器的电气部件以及包括该电气部件的电气电路

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750082A (en) * 1972-06-15 1973-07-31 Danfoss As Plug assembly with resistor
US3750081A (en) * 1972-06-26 1973-07-31 Cts Corp Wirewound variable resistance control and method of making the same
JP2529252Y2 (ja) 1990-04-05 1997-03-19 日本油脂株式会社 正特性サーミスタ装置
US5208723A (en) * 1990-08-20 1993-05-04 Texas Instruments Incorporated Solid state electronic protector with pressure release
US5140298A (en) * 1990-09-04 1992-08-18 International Business Machines Corporation Ceramic base component packaging assembly
JPH0631685Y2 (ja) * 1990-11-26 1994-08-22 太平洋精工株式会社 ブロアモータ用抵抗器
TW421413U (en) * 1994-07-18 2001-02-01 Murata Manufacturing Co Electronic apparatus and surface mounting devices therefor
JPH08241802A (ja) * 1995-03-03 1996-09-17 Murata Mfg Co Ltd サーミスタ装置及びその製造方法
US5663861A (en) * 1995-06-07 1997-09-02 Littelfuse, Inc. Resettable automotive circuit protection device
AU9282598A (en) 1997-10-03 1999-04-27 K.K. Raychem Electric assembly and device
DE19816907B4 (de) * 1998-04-16 2006-09-28 Quante Ag Schutzstecker für eine Einrichtung der Telekommunikationstechnik
WO2001052275A1 (en) * 2000-01-11 2001-07-19 Tyco Electronics Corporation Electrical device
RU2192087C1 (ru) * 2001-07-10 2002-10-27 Наумов Сергей Григорьевич Устройство токовой защиты
JP3688236B2 (ja) * 2001-12-27 2005-08-24 株式会社白山製作所 保安器ユニット
DE10243113A1 (de) * 2002-09-17 2004-04-01 Epcos Ag Elektrische Baugruppe und deren Verwendung
US7145759B2 (en) * 2004-06-25 2006-12-05 Shallco, Inc. Overcurrent protection circuit including auto-reset breaker and PTC resistor
CN2909475Y (zh) * 2006-04-28 2007-06-06 上海思麦电子有限公司 工字型结构对称双片陶瓷过流保护元件

Also Published As

Publication number Publication date
CN101796594A (zh) 2010-08-04
US20100207718A1 (en) 2010-08-19
KR20100057892A (ko) 2010-06-01
JP2010538558A (ja) 2010-12-09
CN101796594B (zh) 2013-02-06
WO2009033896A1 (de) 2009-03-19
EP2183752A1 (de) 2010-05-12
RU2010113005A (ru) 2011-10-20
JP5220112B2 (ja) 2013-06-26
US8004385B2 (en) 2011-08-23
DE102007042358B3 (de) 2008-11-20
KR101447309B1 (ko) 2014-10-06
RU2476946C2 (ru) 2013-02-27

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