US3842188A - Device for holding and contacting thermally loaded ceramic resistors in a case - Google Patents

Device for holding and contacting thermally loaded ceramic resistors in a case Download PDF

Info

Publication number
US3842188A
US3842188A US00415119A US41511973A US3842188A US 3842188 A US3842188 A US 3842188A US 00415119 A US00415119 A US 00415119A US 41511973 A US41511973 A US 41511973A US 3842188 A US3842188 A US 3842188A
Authority
US
United States
Prior art keywords
resistor
case
holding
thermally loaded
rib
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
US00415119A
Other languages
English (en)
Inventor
P Petersen
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Application granted granted Critical
Publication of US3842188A publication Critical patent/US3842188A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • 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 device for holding and contacting thermally loaded ceramic resistors.
  • Thermally loaded ceramic resistors such as PTC resistors are generally brittle and, while they have the characteristic of a substantial temperature expansion coefficient, they are relatively weak structurally.
  • the device hereof which accommodates a PTC resistor includes resiliently biased electrical contacts which old the resistor firmly in a fixed position while permitting the resistor to expand freely upon being heated without incurring stresses wihch would cause breakage.
  • the object of the present invention is that of further simplifying the construction of such device.
  • This object is achieved by making the disc in two parts which are formed by ribs integrally injection moulded with the two parts of the case.
  • the rib which surrounds the resistor body is provided with parallel extensions and is connected through transverse webs only at the ends of these extensions and at the middle of the rib. In this way very large ventilation openings are created between the side walls of the casing, which openings are covered only by the width of the rib.
  • the rib on the other part of the case is associated with a peripheral portion of the resistor body that occupies considerably less than 180 of the circumference of said body. In the extreme case it suffices if said rib is associated with a point on this peripheral portion.
  • FIG. 1 is a longitudinal section through a resistor holding device in accordance with the invention
  • FIG. 2 is a cross section on line 2-2 of FIG. 1;
  • FIG. 3 is a vertical elevation view of the right side of the view shown in FIG. 1;
  • FIG. 4 is a vertical elevational view with parts broken away of the left side of the view shown in FIG. 1;
  • FIG. 5 is a top view partially in section of the view shown in FIG. 1.
  • the device has a case consisting of two parts 1 and 2 which are brought into register with each other by means of an edge 3 and are interconnected by a rivet 4.
  • a PTC resistor body 5 in the form of a cylindrical disc is held loosely by its median part in a hole 6 which is formed in a disc constituted by two ribs 7 and 8.
  • the rib 7 is integrally injection moulded with part I of the case, and the rib 8 with part 2 of the case.
  • Double contacts 9 and 10 engage the two end faces of the resistor body 5. These contacts are parts of contact plate sections 11 which bear against the side walls 12 and 13 of part 1 of the case and project outwardly to form terminal connections 14.
  • the hole 6 formed by the ribs 7 and 8, receiving the disc is not round. Instead, only a l-portion of the rib 7 is associated with the periphery of the resistor body 5, and the rib 8 is associated with a bearing point. However this suffices to hold the resistor body 5 in position between the resilient contacts 9 and 10.
  • the rib 7 has two extensions 15 and 16. It is connected to the side walls 12 and 13 by transverse webs l7, l8 and 19 only at the ends of these extensions and at the middle of the rib. Consequently, large ventilation openings 20 and 21, through which air for cooling the resistor body 5 may pass, are left at both sides of the rib 7 and of its extensions 15 and 16.
  • the resistor body 5 together with the contact plates 11 are pushed into part 1 of the case.
  • the rib 7 holds the resistor body in its final position.
  • Application of the rib 8 when part 2 of the case is fitted ensures that this position is also maintained during operation.
  • the material of the entire case may be any one of a large number of electrically insulating heat resisting plastic substances.
  • a device for holding and contacting a thermally loaded disc shaped ceramic resistor comprising a casing having first and second parts, means fastening said parts together, said first casing part having a U-shaped rib straddled by U-shaped end walls, web means connecting said end walls and said U-shaped rib, said second casing part having a rectangularly shaped rib aligned with said U-shaped rib to form a resistor cavity therebetween, and a pair of resilient electrical contacts disposed on opposite sides of said cavity for resiliently engaging the opposite sides of a resistor when disposed in said cavity and for resiliently engaging said end walls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Resistors (AREA)
  • Resistance Heating (AREA)
US00415119A 1972-11-14 1973-11-12 Device for holding and contacting thermally loaded ceramic resistors in a case Expired - Lifetime US3842188A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2255664A DE2255664C2 (de) 1972-11-14 1972-11-14 Vorrichtung zum Halten und Kontaktieren von thermisch belasteten Keramikwiderständen in einem Gehäuse

Publications (1)

Publication Number Publication Date
US3842188A true US3842188A (en) 1974-10-15

Family

ID=5861644

Family Applications (1)

Application Number Title Priority Date Filing Date
US00415119A Expired - Lifetime US3842188A (en) 1972-11-14 1973-11-12 Device for holding and contacting thermally loaded ceramic resistors in a case

Country Status (13)

Country Link
US (1) US3842188A (de)
JP (2) JPS4978944A (de)
AR (1) AR205334A1 (de)
BR (1) BR7308850D0 (de)
CA (1) CA997441A (de)
DD (1) DD107166A6 (de)
DE (1) DE2255664C2 (de)
DK (1) DK150553C (de)
ES (1) ES420478A1 (de)
FR (1) FR2206565B2 (de)
GB (1) GB1417264A (de)
IT (1) IT1046433B (de)
SE (1) SE381363B (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921117A (en) * 1974-11-29 1975-11-18 Texas Instruments Inc Solid state electrical switch
US3924222A (en) * 1974-10-09 1975-12-02 Thermo Electronics Inc Resistance devices for use in energizing the starting winding of a split phase induction motor
US3925748A (en) * 1973-11-08 1975-12-09 Thermo Electronics Inc Resistance device for use in energizing the starting winding of a split phase induction motor
US3955170A (en) * 1974-11-29 1976-05-04 Texas Instruments Incorporated Solid state switch
US3988709A (en) * 1975-05-12 1976-10-26 Eugene T. McKinnon Electric motor controlling relay
DE2849584A1 (de) * 1977-11-15 1979-05-17 Texas Instruments Inc Thermorelais und verfahren zum zusammenbauen eines solchen relais
US4241370A (en) * 1978-11-14 1980-12-23 Texas Instruments Incorporated Thermal relays particularly for starting single-phase asynchronous motors
US4267635A (en) * 1976-05-03 1981-05-19 Texas Instruments Incorporated Method of making a solid state electrical switch
US4299026A (en) * 1978-11-14 1981-11-10 Texas Instruments Incorporated Method of assembling a motor starting relay
EP0062167A2 (de) * 1981-03-31 1982-10-13 Siemens Aktiengesellschaft Elektrisches Bauelement, das zentriert und justiert in einem Gehäuse untergebracht ist
US4431983A (en) * 1980-08-29 1984-02-14 Sprague Electric Company PTCR Package
US4504817A (en) * 1981-04-13 1985-03-12 Murata Manufacturing Co., Ltd. Demagnetizing circuit using a PTC thermistor device
FR2551910A1 (fr) * 1983-09-09 1985-03-15 Tdk Corp Dispositif resistant a coefficient de temperature positif
EP0307165A2 (de) * 1987-09-07 1989-03-15 Murata Manufacturing Co., Ltd. Thermistor-Anordnung mit positivem Temperaturkoeffizienten
US5153555A (en) * 1989-11-28 1992-10-06 Murata Manufacturing Co., Ltd. Electronic device comprising a plate-shaped electronic element and a support and overcurrent protector for the same
US5281758A (en) * 1992-11-12 1994-01-25 Gte Products Corporation Electrical contact with shock absorbing means
US5729416A (en) * 1995-05-30 1998-03-17 General Electric Company Motor starter and protector module
EP1739702A1 (de) * 2005-06-29 2007-01-03 Sanyo Electric Co., Ltd. Starterrelais
DE102006055216A1 (de) * 2006-11-21 2008-05-29 Eichenauer Heizelemente Gmbh & Co. Kg Heizeinrichtung für Dieselkraftstoff und beheizbares Dieselfiltersystem
US20090162041A1 (en) * 2007-12-21 2009-06-25 Beetz Klaus Dr Heating device for fuel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743761A (en) * 1971-08-10 1973-07-03 Gen Electric High voltage rectifier holder
US3750082A (en) * 1972-06-15 1973-07-31 Danfoss As Plug assembly with resistor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029096B (de) * 1954-07-20 1958-04-30 Westinghouse Brake & Signal Verschlossene Trockengleichrichteranordnung und Verfahren zu ihrer Herstellung
US2880295A (en) * 1957-05-10 1959-03-31 Gen Telephone Lab Inc Silicon carbide resistor mounting
US3568013A (en) * 1968-12-30 1971-03-02 Texas Instruments Inc Solid-state switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743761A (en) * 1971-08-10 1973-07-03 Gen Electric High voltage rectifier holder
US3750082A (en) * 1972-06-15 1973-07-31 Danfoss As Plug assembly with resistor

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925748A (en) * 1973-11-08 1975-12-09 Thermo Electronics Inc Resistance device for use in energizing the starting winding of a split phase induction motor
US3924222A (en) * 1974-10-09 1975-12-02 Thermo Electronics Inc Resistance devices for use in energizing the starting winding of a split phase induction motor
US3955170A (en) * 1974-11-29 1976-05-04 Texas Instruments Incorporated Solid state switch
US3921117A (en) * 1974-11-29 1975-11-18 Texas Instruments Inc Solid state electrical switch
US3988709A (en) * 1975-05-12 1976-10-26 Eugene T. McKinnon Electric motor controlling relay
US4267635A (en) * 1976-05-03 1981-05-19 Texas Instruments Incorporated Method of making a solid state electrical switch
DE2849584A1 (de) * 1977-11-15 1979-05-17 Texas Instruments Inc Thermorelais und verfahren zum zusammenbauen eines solchen relais
US4241370A (en) * 1978-11-14 1980-12-23 Texas Instruments Incorporated Thermal relays particularly for starting single-phase asynchronous motors
US4299026A (en) * 1978-11-14 1981-11-10 Texas Instruments Incorporated Method of assembling a motor starting relay
US4431983A (en) * 1980-08-29 1984-02-14 Sprague Electric Company PTCR Package
EP0062167A2 (de) * 1981-03-31 1982-10-13 Siemens Aktiengesellschaft Elektrisches Bauelement, das zentriert und justiert in einem Gehäuse untergebracht ist
EP0062167A3 (en) * 1981-03-31 1984-03-28 Siemens Aktiengesellschaft Electrical component centered and adjusted in a casing
US4504817A (en) * 1981-04-13 1985-03-12 Murata Manufacturing Co., Ltd. Demagnetizing circuit using a PTC thermistor device
FR2551910A1 (fr) * 1983-09-09 1985-03-15 Tdk Corp Dispositif resistant a coefficient de temperature positif
EP0307165A2 (de) * 1987-09-07 1989-03-15 Murata Manufacturing Co., Ltd. Thermistor-Anordnung mit positivem Temperaturkoeffizienten
EP0307165A3 (en) * 1987-09-07 1990-01-17 Murata Manufacturing Co., Ltd. Positive temperature coefficient thermistor device
US5153555A (en) * 1989-11-28 1992-10-06 Murata Manufacturing Co., Ltd. Electronic device comprising a plate-shaped electronic element and a support and overcurrent protector for the same
US5281758A (en) * 1992-11-12 1994-01-25 Gte Products Corporation Electrical contact with shock absorbing means
US5729416A (en) * 1995-05-30 1998-03-17 General Electric Company Motor starter and protector module
CN100517944C (zh) * 2005-06-29 2009-07-22 三洋电机株式会社 启动继电器
EP1739702A1 (de) * 2005-06-29 2007-01-03 Sanyo Electric Co., Ltd. Starterrelais
US20070001801A1 (en) * 2005-06-29 2007-01-04 Masahide Kobayasi Starter relay
US7522030B2 (en) 2005-06-29 2009-04-21 Sanyo Electric Co., Ltd. Starter relay
US20080124062A1 (en) * 2006-11-12 2008-05-29 Kai Wallhaeusser Heating device for diesel fuel and heatable diesel filter system
DE102006055216A1 (de) * 2006-11-21 2008-05-29 Eichenauer Heizelemente Gmbh & Co. Kg Heizeinrichtung für Dieselkraftstoff und beheizbares Dieselfiltersystem
US7860381B2 (en) 2006-11-21 2010-12-28 Eichenauer Heizelemente Gmbh & Co. Kg Heating device for diesel fuel and heatable diesel filter system
US20090162041A1 (en) * 2007-12-21 2009-06-25 Beetz Klaus Dr Heating device for fuel
US8301021B2 (en) * 2007-12-21 2012-10-30 Mahle International Gmbh Heating device for fuel

Also Published As

Publication number Publication date
ES420478A1 (es) 1976-04-01
JPS5397747U (de) 1978-08-08
FR2206565A2 (de) 1974-06-07
IT1046433B (it) 1980-06-30
CA997441A (en) 1976-09-21
DK150553B (da) 1987-03-23
BR7308850D0 (pt) 1974-08-22
JPS5417134Y2 (de) 1979-07-03
DD107166A6 (de) 1974-07-05
DE2255664B1 (de) 1974-04-25
FR2206565B2 (de) 1978-07-07
SE381363B (sv) 1975-12-01
DE2255664C2 (de) 1974-11-28
DK150553C (da) 1988-03-28
GB1417264A (en) 1975-12-10
JPS4978944A (de) 1974-07-30
AR205334A1 (es) 1976-04-30

Similar Documents

Publication Publication Date Title
US3842188A (en) Device for holding and contacting thermally loaded ceramic resistors in a case
US5198640A (en) Fully clad electric ptc heater with a finned protective casing
US2606986A (en) Resistance unit
US4045763A (en) Sealed thermostatic heater
US5270521A (en) Heating apparatus comprising a plate-shaped PTC thermistor accommodated in an insulating spacer and terminal plates in snap-engagement with the spacer
US3876861A (en) Heating unit
US4316172A (en) Resistor such as for dynamic braking of electric motors
US3925748A (en) Resistance device for use in energizing the starting winding of a split phase induction motor
US2502044A (en) Resistor support
KR100737347B1 (ko) 피티씨 소자를 이용한 발열장치
US2530806A (en) Electric space heater
US2343425A (en) Rheostat
KR20070111127A (ko) 커버 결합형 차량용 프리히터
US4311900A (en) Heater band
US3234350A (en) Temperature indicator switch
US1993494A (en) Resistance
US2549944A (en) Electrical heating device
US3747208A (en) Thermally responsive switch and method for making the same
US2474190A (en) Thermostatic switch
US3102249A (en) Heating unit mounting means
GB1058286A (en) Improvements in electrical switches
US2861168A (en) Electric heater panel contact structure
US2839710A (en) Rectifier assemblies
US2589614A (en) Construction for electric heaters for flexing bars
US2874258A (en) Electrical resistor units