EP0677855A1 - Résistance - Google Patents

Résistance Download PDF

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Publication number
EP0677855A1
EP0677855A1 EP95105563A EP95105563A EP0677855A1 EP 0677855 A1 EP0677855 A1 EP 0677855A1 EP 95105563 A EP95105563 A EP 95105563A EP 95105563 A EP95105563 A EP 95105563A EP 0677855 A1 EP0677855 A1 EP 0677855A1
Authority
EP
European Patent Office
Prior art keywords
ptc element
ptc
connecting wires
resistor
wire
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.)
Granted
Application number
EP95105563A
Other languages
German (de)
English (en)
Other versions
EP0677855B1 (fr
Inventor
Peter Hofsäss
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.)
Erbengemeinschaft Peter Hofsaess Hofsaess U Hofsaess Mp Hofsaess Dp Hofsaess Hp Hofsaess Cr Hofsaess Bm
Original Assignee
Erbengemeinschaft Peter Hofsaess Hofsaess U Hofsaess Mp Hofsaess Dp Hofsaess Hp Hofsaess Cr Hofsaess Bm
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 Erbengemeinschaft Peter Hofsaess Hofsaess U Hofsaess Mp Hofsaess Dp Hofsaess Hp Hofsaess Cr Hofsaess Bm filed Critical Erbengemeinschaft Peter Hofsaess Hofsaess U Hofsaess Mp Hofsaess Dp Hofsaess Hp Hofsaess Cr Hofsaess Bm
Publication of EP0677855A1 publication Critical patent/EP0677855A1/fr
Application granted granted Critical
Publication of EP0677855B1 publication Critical patent/EP0677855B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/28—Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making
    • Y10T29/49085—Thermally variable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making
    • Y10T29/49101—Applying terminal

Definitions

  • the present invention relates to a resistor, in particular for use on coil windings of e.g. Electric motors, with at least one flat PTC element, on the opposite end faces of which metal plates are soldered, which have protruding projections over the PTC element.
  • a resistor in particular for use on coil windings of e.g. Electric motors, with at least one flat PTC element, on the opposite end faces of which metal plates are soldered, which have protruding projections over the PTC element.
  • Such a resistor is known from DE-A-37 03 465.
  • the protruding contact parts open into an area for connecting terminals to which connecting wires may have to be connected. This connection is usually done manually and is time-consuming.
  • so-called self-stabilizing resistors are used, which therefore have PTC elements with which electrical connecting wires are connected.
  • the resistors are brought into close thermal contact with the electrical device, for example the coil.
  • such resistors are provided connected in series and attached to different locations of the winding.
  • the connecting wires are soldered directly to the PTC elements, which for this purpose have a solderable metallic contact surface, e.g. an evaporated silver coating.
  • the connecting wires are usually soldered by hand. This is expensive, especially when extremely small PTC elements are used, which have heights of less than 2 mm and diameters of less than 5 mm up to only 3 mm. Further assembly is also done by hand, shrink sleeves are e.g. handmade.
  • the invention is therefore based on the object of providing a resistor of the type mentioned at the outset, which is inexpensive to produce, in particular making it easier to assemble with connecting wires.
  • this object is achieved in the case of the resistance mentioned at the outset in that connecting wires which are electrically connected to the lugs with the PTC element are fastened and are held by curved edges of the lugs.
  • the aforementioned measure facilitates the fastening, preferably welding, of the connecting wires to the metal plates, which are also referred to below as the support and cover surfaces.
  • the edges of the approaches are bent perpendicular to these.
  • the sheet metal plates which surround the PTC element in a sandwich-like manner are essentially circular and the projections protrude tangentially from the sheet metal plates.
  • the lugs are offset from one another on the metal plates, but extend parallel to one another away from the metal plates.
  • the attached connecting wires are taped, so that the assembled resistors are promoted for further processing can.
  • This further processing can consist, for example, in that the resistors are provided with an insulation layer which can be produced by powder coating. Furthermore, a shrink sleeve can be pushed on or shrunk on.
  • series connections of two or more PTC elements can also be provided.
  • one end of a piece of wire is connected to the top surface of the first PTC element, while the other end of the piece of wire is connected to the contact surface of the immediately following PTC element.
  • the contact surface of the first PTC element and the top surface of the second PTC element are each provided with the connecting wires.
  • the first end of a connecting wire is connected to the top surface of the preceding PTC element and the second end of the connecting wire is connected to the immediately following PTC element, the contact surface of the first PTC element and the top surface of the third PTC element is provided with individual connecting wires.
  • the new resistor is described using a method for producing assembled, self-stabilizing resistors. This method is based on an endless carrier tape 1 made of thin sheet metal.
  • Support surfaces 2 and cover surfaces 3 for PTC elements 4 are punched out of the carrier tape and are further held on a narrow holding strip 6 via connecting sections 7, 8 extending therefrom (method step A).
  • On the cover and support surface 2, 3 extend essentially tangentially lugs 9, 11 for the later reception and fixing of connecting wires.
  • Openings 12 are also punched out of the holding strip 6, by means of which, during further processing, an exact positioning of the holding strip 6 and thus also of the cover and support surfaces 2, 3 can be effected.
  • edges 13 (FIGS. 2a, b) of the projections 9, 11 are bent upward in the plan view of FIG. 1.
  • the top surface 3 becomes approximately as far out of the plane of the carrier tape 1, but still parallel to it lying offset, as it corresponds to the strength of the PTC element 4.
  • Cover and support surface 2, 3 can furthermore be plate-shaped or bowl-shaped, as can be seen in FIG. 2b, so that edges 14 are formed which can encompass and center the PTC element 4 around its circumference.
  • solder 16 is applied to the support and cover surface 2, 3.
  • a PTC element in the form of a PTC pill is placed on the soldered support surface.
  • the PTC elements can be conveyed on a vibrating pot 17 and either taken over by a gripper and placed on the bearing surface 2, or conveyed to the bearing surfaces 2 by means of a slide and an exposed stop.
  • positioning pins 18 can be provided in addition to the contact surface 2, which, when a new contact surface 2 comes into their area, are moved upwards and hold the PTC element 4 between them.
  • step E the tab 7 carrying the top surface 3 is bent in such a way that the top surface 3 is brought exactly over the PTC element 4. The result of this step is shown on the one hand in FIGS.
  • the PTC element 4 and the support and cover surface 2, 3 are soldered to the previously applied solder 16.
  • the soldering is preferably carried out at high frequency, that is to say by means of a high-frequency generator.
  • the PTC element 4 has been fastened in this way to the support surface 2 and thus also the cover surface 3 has been fixed via the PTC element 4
  • its carrier tab 7 can be separated from the carrier tape 6, for example at the point indicated by 19 (FIG. 2b). This takes place in the procedural step G.
  • the support surface 2 with the carrier tape 6 and the top surface 3 are electrically separated from one another, so they no longer form a short-circuit connection.
  • step I degreasing and finally (step J) cutting off defective PTC elements, the deficiency being determined in the above-mentioned test process.
  • the lugs 9, 11 are then provided with corresponding connecting wires 23, 24 (FIG. 3).
  • a plurality of PTC elements 4 are to be connected to one another in series, for example two PTC elements in a twin circuit or three PTC elements in a triplet circuit
  • the wire ends 26, 27 are preferably welded to the lugs 9, 11 (step K1).
  • step K1 it can be seen how three successive PTC elements are connected in series with one another by means of two U-shaped connecting wires.
  • step K2 the individual connecting strands 24 are attached to the free lugs 9 and 11, respectively.
  • the connecting wires 23 are prepared in such a way that they are pulled off a wire reel, first of all at a front end in a stripping block 28 there is sufficient stripping of the front wire, and then the wire is conveyed along two aligned grippers 29 which can be pivoted relative to one another. After reaching the required wire length, the piece of wire 23 is removed from the The remaining wire was cut off and the end 26 was also stripped. The grippers 29 pivot against one another and thereby bend the wire piece 23 into the U-shape shown at the beginning of FIG. 3, in which the start 27 and end 26 of the wire reach the parallel orientation shown.
  • connection wires 23, 24 After the connection wires 23, 24 have been attached, they are preferably taped, for example sandwiched between two adhesive tapes, which can be done in a conventional manner (step L). After the connecting wires 23, 24 and then the PTC elements are held by the belts 31, the PTC elements can be completely separated from the carrier tape 6 by a complete separation at 32 (FIG. 2) (step M).
  • the self-stabilizing resistors produced in this way can now be fed to further processing steps.
  • a coating can be carried out, for example casting or powder coating.
  • the initially horizontally conveyed resistors 33 are pivoted through 90 °, so that the connecting wires point upwards. This takes place in that the belt 31 is passed between rollers 34, 36 which are provided in pairs and are perpendicular to one another.
  • the resistors 33 are passed through a powder bath.
  • the adhering powder is then melted by heat that can be generated via a radiator 37, cools down again and forms a tight coating (step O).
  • a shrink cap 38 can be pushed over the resistors 33. This is separated from an endless hose 39 (step P), possibly closed in its free end and provided with a label (step Q). You can do this on one Kreis makeuper 39 are promoted.
  • step R the self-stabilizing resistors 33
  • step S a shrinking process

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Thermistors And Varistors (AREA)
  • Non-Adjustable Resistors (AREA)
  • Details Of Resistors (AREA)
  • Electronic Switches (AREA)
  • Non-Insulated Conductors (AREA)
EP95105563A 1991-02-15 1992-01-31 Résistance Expired - Lifetime EP0677855B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4104709 1991-02-15
DE4104709A DE4104709A1 (de) 1991-02-15 1991-02-15 Verfahren zum herstellen konfektionierter selbststabilisierender widerstaende und derartige widerstaende
EP92101601A EP0499100B1 (fr) 1991-02-15 1992-01-31 Procédé pour la fabrication des résistances confectionnées

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP92101601.0 Division 1992-01-31
EP92101601A Division EP0499100B1 (fr) 1991-02-15 1992-01-31 Procédé pour la fabrication des résistances confectionnées

Publications (2)

Publication Number Publication Date
EP0677855A1 true EP0677855A1 (fr) 1995-10-18
EP0677855B1 EP0677855B1 (fr) 1998-01-14

Family

ID=6425140

Family Applications (2)

Application Number Title Priority Date Filing Date
EP95105563A Expired - Lifetime EP0677855B1 (fr) 1991-02-15 1992-01-31 Résistance
EP92101601A Expired - Lifetime EP0499100B1 (fr) 1991-02-15 1992-01-31 Procédé pour la fabrication des résistances confectionnées

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP92101601A Expired - Lifetime EP0499100B1 (fr) 1991-02-15 1992-01-31 Procédé pour la fabrication des résistances confectionnées

Country Status (5)

Country Link
US (1) US5239745A (fr)
EP (2) EP0677855B1 (fr)
JP (1) JP3270097B2 (fr)
AT (2) ATE162332T1 (fr)
DE (3) DE4104709A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0831606A (ja) * 1994-07-19 1996-02-02 Murata Mfg Co Ltd 電子部品
DE29521353U1 (de) * 1994-12-21 1997-02-06 Renk Ag, 86159 Augsburg Gleitlager
US5835004A (en) * 1995-04-21 1998-11-10 Raychem Corporation Electrical devices and assemblies
GB9613216D0 (en) * 1996-06-25 1996-08-28 Bowthorpe Components Ltd Thermistor device
WO1998044516A1 (fr) * 1997-03-27 1998-10-08 Littelfuse, Inc. Dispositif de protection de circuit automobile rearmable
US6058004A (en) * 1997-09-08 2000-05-02 Delaware Capital Formation, Inc. Unitized discrete electronic component arrays
US6091317A (en) * 1998-07-06 2000-07-18 Ford Motor Company Temperature sensor assembly
TW463184B (en) * 1999-04-09 2001-11-11 Murata Manufacturing Co Temperature sensor, method of producing same and method of mounting same to a circuit board
WO2015089116A1 (fr) 2013-12-11 2015-06-18 Honeywell International Inc. Systèmes de commande immotique
US10488062B2 (en) 2016-07-22 2019-11-26 Ademco Inc. Geofence plus schedule for a building controller
US10895883B2 (en) 2016-08-26 2021-01-19 Ademco Inc. HVAC controller with a temperature sensor mounted on a flex circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703465A1 (de) * 1987-02-05 1988-08-18 Behr Thomson Dehnstoffregler Verfahren zum herstellen eines elektrischen schaltgeraetes und elektrisches schaltgeraet

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117297A (en) * 1964-01-07 figure
GB411512A (en) * 1932-12-06 1934-06-06 Pye Radio Ltd Improvements in and relating to electric resistances
US2659871A (en) * 1949-10-03 1953-11-17 Aircraft Marine Prod Inc Electrical connector strip having laterally displaced strip feeding edges
US3322655A (en) * 1963-08-12 1967-05-30 United Aircraft Corp Method of making terminated microwafers
DE1490246B2 (de) * 1964-06-23 1974-07-04 Resista Fabrik Elektrischer Widerstaende Gmbh, 8300 Landshut Verfahren zum Anbringen von Kontaktierangsteilen an elektrischen Bauelementen
DE2623606A1 (de) * 1976-05-26 1977-12-08 Draloric Electronic Verfahren zur herstellung eines elektrischen schichtwiderstandes
JPS5963536A (ja) * 1982-10-04 1984-04-11 Murata Mfg Co Ltd 複合温度検知素子の製造方法
JPH0690964B2 (ja) * 1986-03-31 1994-11-14 日本メクトロン株式会社 Ｐｔｃ素子の製造法
JPH0821490B2 (ja) * 1987-05-22 1996-03-04 松下電器産業株式会社 可変抵抗器の製造方法
US4926542A (en) * 1988-08-26 1990-05-22 Dale Electronic, Inc. Method of making a surface mount wirewound resistor
JPH0311701A (ja) * 1989-06-09 1991-01-21 Murata Mfg Co Ltd 正特性サーミスタ装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703465A1 (de) * 1987-02-05 1988-08-18 Behr Thomson Dehnstoffregler Verfahren zum herstellen eines elektrischen schaltgeraetes und elektrisches schaltgeraet

Also Published As

Publication number Publication date
US5239745A (en) 1993-08-31
JPH05226121A (ja) 1993-09-03
EP0499100B1 (fr) 1996-05-08
DE4104709A1 (de) 1992-08-20
ATE162332T1 (de) 1998-01-15
EP0677855B1 (fr) 1998-01-14
EP0499100A2 (fr) 1992-08-19
DE59209141D1 (de) 1998-02-19
EP0499100A3 (en) 1993-04-21
JP3270097B2 (ja) 2002-04-02
ATE137883T1 (de) 1996-05-15
DE59206205D1 (de) 1996-06-13

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