EP0565998A2 - Appliance for contact clamping of electrical devices - Google Patents

Appliance for contact clamping of electrical devices Download PDF

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Publication number
EP0565998A2
EP0565998A2 EP93105689A EP93105689A EP0565998A2 EP 0565998 A2 EP0565998 A2 EP 0565998A2 EP 93105689 A EP93105689 A EP 93105689A EP 93105689 A EP93105689 A EP 93105689A EP 0565998 A2 EP0565998 A2 EP 0565998A2
Authority
EP
European Patent Office
Prior art keywords
caps
spring elements
ptc thermistor
tongues
free end
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
EP93105689A
Other languages
German (de)
French (fr)
Other versions
EP0565998B1 (en
EP0565998A3 (en
Inventor
Sigurd Dipl.-Ing. Greiderer
Bernd Dipl.-Ing. Gruhn
Robert Dipl.-Ing. Karner
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
Siemens Matsushita Components 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 Siemens Matsushita Components GmbH and Co KG filed Critical Siemens Matsushita Components GmbH and Co KG
Publication of EP0565998A2 publication Critical patent/EP0565998A2/en
Publication of EP0565998A3 publication Critical patent/EP0565998A3/en
Application granted granted Critical
Publication of EP0565998B1 publication Critical patent/EP0565998B1/en
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
    • H01C1/01—Mounting; Supporting
    • H01C1/014—Mounting; Supporting the resistor being suspended between and being supported by two supporting sections

Definitions

  • the present invention relates to a device for clamping contacting of electrical components according to the preamble of patent claim 1.
  • PTC thermistors with contact to terminals are known.
  • Such components consist in principle of a PTC thermistor, two spring elements which are resiliently engaged with the PTC thermistor disc, and a housing from which free ends of the spring elements protrude and thus form external connections for the component.
  • the housing is a closed design, which keeps the PTC thermistor and the spring elements in position relative to each other.
  • the heat dissipation from the PTC thermistor is not optimal in such an embodiment of the component.
  • the present invention has for its object to provide a clamp contact for electrical components, in particular PTC thermistors, with improved heat dissipation to the outside.
  • FIGS. 1 and 2 show, two caps 2 and 3 made of insulating material, in particular of plastic, are initially provided for a clamping contact of a component pane of an electrical component.
  • the component disc is formed by a PTC thermistor disc 1, which has a circular cross section, as can be seen from FIG. 1.
  • the plastic caps 2 and 3 are generally cup-shaped and have an essentially U-shaped cross section, as can be seen from FIG.
  • recesses 4 and 5 are provided, which serve to accommodate spring elements for the clamping contact in a manner to be explained below.
  • Figure 3 shows an embodiment of such a spring element.
  • An elongated leg of this spring element 8 has in the area between its Ends an arcuate piece 10, the convex side of which rests under pressure on the PTC thermistor 1, as will be explained in more detail below.
  • a short free end 11 of the elongated leg of the spring element 8 is received by one of the two caps, namely the cap 2, during the clamping contact of the semiconductor wafer 1, while the other longer free end 12 of the elongated leg of the spring element 8 is received by the other cap 3 becomes.
  • Two tongues 9 at the ends of the arcuate piece 10 snap into the recesses 4 and 5 when the spring element 8 is inserted into the caps 2 and 3.
  • a pair of caps 2, 3 is formed such that one cap, namely the cap 2, has grooves 6, which, as seen in FIG. 2, are closed at the top of the cap 2. These grooves 6, closed on one side, serve to receive the free end 11 of two spring elements 8, the tongue 9 adjacent to this free end 11 being able to snap into a recess 4 of the cap 2.
  • grooves 7 are also provided in the cap 3, but these are open on both sides, so that a spring element 8 with its longer free end 12 can be inserted through these notes 7 such that the tongue 9 adjacent to this free end into the recess 5 can snap into place.
  • grooves 6 in the cap 2 are closed on one side. Like the grooves 7 in the cap 3, they can be open on both sides. This is not specifically shown in Figure 2.
  • FIGS. 4 and 5 show how two spring elements 8 in two caps 2 and 3 both electrically contact a PTC thermistor 1 and hold it mechanically between caps 2 and 3 by clamping.
  • FIG. 5 specifically shows how the curved pieces 10 of the two spring elements 8 press with their convex side against the semiconductor wafer 1 and thus hold them mechanically in their position between the caps 2 and 3. From Figure 4 it can be seen that the arcuate piece 10 can be made wider than the free ends (in Figure 4, the free end 12 is visible), whereby the contact surface on the PTC thermistor 1 is sufficiently large to ensure secure clamping .
  • the longer free ends 12 of the spring elements 8 simultaneously serve as electrical external connections for the PTC thermistor component, which is formed by the PTC thermistor pill 1, the caps 2 and 3 and the spring elements 8.
  • the caps 2, 3 Since only a part of the PTC thermistor 1 is covered by the caps 2, 3 and the contacting areas of the spring elements in the terminal contacting according to the invention, a significantly better heat dissipation is achieved compared to embodiments with closed housings.
  • the caps can also have shapes that differ from the shape shown in the figures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Thermistors And Varistors (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Details Of Resistors (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Abstract

PTC thermistor terminal contact-making device having a holder consisting of caps (2, 3) containing a pair of recesses (4, 5) and having spring elements (8) which have tongues which are inserted into the caps (2, 3), which tongues engage in the recesses (4, 5) and hence hold the PTC thermistor disc (1) and the caps (2, 3) in position with respect to one another and at the same time make electrical contact with the PTC thermistor disc (1). <IMAGE>

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zur Klemmkontaktierung von elektrischen Bauelementen nach dem Oberbegriff des Patentanspruchs 1.The present invention relates to a device for clamping contacting of electrical components according to the preamble of patent claim 1.

Aus dem Siemens-Datenbuch 1987/88 Kaltleiter, Seiten 130 bis 135 sind klemmkontaktierte Kaltleiter bekannt. Derartige Bauelemente bestehen im Prinzip aus einer Kaltleiterscheibe, zwei mit der Kaltleiterscheibe federnd in Eingriff stehenden Federelementen sowie einem Gehäuse, aus dem freie Enden der Federelemente herausragen und damit äußere Anschlüsse für das Bauelement bilden. Beim Gehäuse handelt es sich um eine geschlossene Bauform, welche die Kaltleiterscheibe sowie die Federelemente in ihrer Lage zueinander hält.From the Siemens data book 1987/88 PTC thermistors, pages 130 to 135, PTC thermistors with contact to terminals are known. Such components consist in principle of a PTC thermistor, two spring elements which are resiliently engaged with the PTC thermistor disc, and a housing from which free ends of the spring elements protrude and thus form external connections for the component. The housing is a closed design, which keeps the PTC thermistor and the spring elements in position relative to each other.

Da das Gehäuse allseitig geschlossen ist, ist bei einer solchen Ausführungsform des Bauelementes die Wärmeabfuhr von der Kaltleiterscheibe nicht optimal.Since the housing is closed on all sides, the heat dissipation from the PTC thermistor is not optimal in such an embodiment of the component.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Klemmkontaktierung für elektrische Bauelemente, insbesondere Kaltleiter, mit verbesserter Wärmeabfuhr nach außen anzugeben.The present invention has for its object to provide a clamp contact for electrical components, in particular PTC thermistors, with improved heat dissipation to the outside.

Diese Aufgabe wird bei einer Vorrichtung der eingangs genannten Art erfindungsgemäß durch die Merkmale des kennzeichnenden Teils des Patentanspruchs 1 gelöst.This object is achieved according to the invention in a device of the type mentioned at the outset by the features of the characterizing part of patent claim 1.

Weiterbildungen der Erfindung sind Gegenstand von Unteransprüchen.Developments of the invention are the subject of dependent claims.

Die Erfindung wird im folgenden anhand von in den Figuren der Zeichnung dargestellten Ausführungsbeispielen näher erläutert. Es zeigt:

Figur 1
eine Ausführungsform einer Klemmkontaktierung für einen Kaltleiter;
Figur 2
eine Ausführungsform von Kunststoffkappen zur Verwendung bei der Klemmkontaktierung eines Kaltleiters;
Figur 3
eine Ausführungsform einer Metallfeder zur Klemmkontaktierung;
Figur 4
eine Seitenansicht eines mittels Klemmkontaktierung kontaktierten Kaltleiters; und
Figur 5
eine der Figur 4 entsprechende Darstellung bei einer Drehung um 90°.
The invention is explained in more detail below with reference to exemplary embodiments shown in the figures of the drawing. It shows:
Figure 1
an embodiment of a clamp contact for a PTC thermistor;
Figure 2
an embodiment of plastic caps for use in the terminal contact of a PTC thermistor;
Figure 3
an embodiment of a metal spring for clamping contact;
Figure 4
a side view of a PTC thermistor contacted by means of terminal contacting; and
Figure 5
a representation corresponding to Figure 4 with a rotation of 90 °.

Wie die Figuren 1 und 2 zeigen, sind für eine Klemmkontaktierung einer Bauelementescheibe eines elektrischen Bauelementes zunächst zwei aus isolierendem Material, insbesondere aus Kunststoff hergestellte Kappen 2 und 3 vorgesehen. Die Bauelementescheibe wird im Ausführungsbeispiel durch eine Kaltleiterscheibe 1 gebildet, welche kreisförmigen Querschnitt besitzt, wie dies aus Figur 1 ersichtlich ist.As FIGS. 1 and 2 show, two caps 2 and 3 made of insulating material, in particular of plastic, are initially provided for a clamping contact of a component pane of an electrical component. In the exemplary embodiment, the component disc is formed by a PTC thermistor disc 1, which has a circular cross section, as can be seen from FIG. 1.

Die Kunststoffkappen 2 und 3 sind generell napfförmig ausgebildet und besitzen dabei im wesentlichen U-förmigen Querschnitt, wie dies aus Figur 2 ersichtlich ist. In Seitenwänden der Kappen 2 und 3 sind Ausnehmungen 4 bzw. 5 vorgesehen, welchen in im folgenden noch zu erläuternder Weise zur Aufnahme von Federelementen für die Klemmkontaktierung dienen. Figur 3 zeigt eine Ausführungsform eines derartigen Federelementes. Ein langegestreckter Schenkel diese Federelementes 8 besitzt im Bereich zwischen seinen Enden ein bogenförmiges Stück 10, dessen konvexe Seite unter Druck an der Kaltleiterscheibe 1 anliegt, wie dies im folgenden noch genauer erläutert wird.The plastic caps 2 and 3 are generally cup-shaped and have an essentially U-shaped cross section, as can be seen from FIG. In the side walls of the caps 2 and 3, recesses 4 and 5 are provided, which serve to accommodate spring elements for the clamping contact in a manner to be explained below. Figure 3 shows an embodiment of such a spring element. An elongated leg of this spring element 8 has in the area between its Ends an arcuate piece 10, the convex side of which rests under pressure on the PTC thermistor 1, as will be explained in more detail below.

Ein kurzes freies Ende 11 des langgestreckten Schenkels des Federelementes 8 wird bei der Klemmkontaktierung der Halbleiterscheibe 1 von einem der beiden Kappen, nämlich von der Kappe 2 aufgenommen, während das andere längere freie Ende 12 des langgestreckten Schenkels des Federelementes 8 von der anderen Kappe 3 aufgenommen wird. Zwei Zungen 9 an den Enden des bogenförmigen Stücks 10 rasten beim Einsetzen des Federelementes 8 in die Kappen 2 und 3 in die Ausnehmungen 4 bzw. 5 ein.A short free end 11 of the elongated leg of the spring element 8 is received by one of the two caps, namely the cap 2, during the clamping contact of the semiconductor wafer 1, while the other longer free end 12 of the elongated leg of the spring element 8 is received by the other cap 3 becomes. Two tongues 9 at the ends of the arcuate piece 10 snap into the recesses 4 and 5 when the spring element 8 is inserted into the caps 2 and 3.

Zur Klemmkontaktierung jeweils einer Kaltleiterscheibe 1 ist jeweils ein Paar von Kappen 2, 3 derart ausgebildet, daß eine Kappe, nämlich die Kappe 2 Nuten 6 aufweist, welche in Figur 2 gesehen an der Oberseite der Kappe 2 geschlossen sind. Diese einseitig geschlossenen Nuten 6 dienen zur Aufnahme des freien Endes 11 von zwei Federelementen 8, wobei die diesem freien Ende 11 benachbarte Zunge 9 in jeweils eine Ausnehmung 4 der Kappe 2 einrasten kann.For clamping contact with a PTC thermistor 1, a pair of caps 2, 3 is formed such that one cap, namely the cap 2, has grooves 6, which, as seen in FIG. 2, are closed at the top of the cap 2. These grooves 6, closed on one side, serve to receive the free end 11 of two spring elements 8, the tongue 9 adjacent to this free end 11 being able to snap into a recess 4 of the cap 2.

Gemäß Figur 2 sind in der Kappe 3 ebenfalls Nuten 7 vorgesehen, welche jedoch beidseitig offen sind, so daß ein Federelement 8 mit seinem längeren freien Ende 12 durch diese Noten 7 derart gesteckt werden kann, daß die diesem freien Ende benachbarte Zunge 9 in die Ausnehmung 5 einrasten kann.According to Figure 2, grooves 7 are also provided in the cap 3, but these are open on both sides, so that a spring element 8 with its longer free end 12 can be inserted through these notes 7 such that the tongue 9 adjacent to this free end into the recess 5 can snap into place.

Es ist nicht unbedingt erforderlich, daß die Nuten 6 in der Kappe 2 einseitig geschlossen sind. Sie können ebenso wie die Nuten 7 in der Kappe 3 beidseitig offen sein. Dies ist in Figur 2 nicht eigens dargestellt.It is not absolutely necessary for the grooves 6 in the cap 2 to be closed on one side. Like the grooves 7 in the cap 3, they can be open on both sides. This is not specifically shown in Figure 2.

Aus den Figuren 4 und 5 ist ersichtlich, wie durch zwei Federelemente 8 in zwei Kappen 2 und 3 eine Kaltleiterscheibe 1 sowohl elektrisch kontaktiert als auch durch Klemmen mechanisch zwischen den Kappen 2 und 3 gehalten wird. Speziell zeigt Figur 5, wie die bogenförmigen Stücke 10 der beiden Federelemente 8 mit ihrer konvexen Seite gegen die Halbleiterscheibe 1 drücken und sie damit mechanisch in ihrer Lage zwischen den Kappen 2 und 3 halten. Aus Figur 4 ist ersichtlich, daß das bogenförmige Stück 10 im Vergleich zu den freien Enden (in Figur 4 ist das freie Ende 12 sichtbar) breiter ausgebildet sein kann, wodurch die Anlagefläche an der Kaltleiterscheibe 1 ausreichend groß wird, um eine sichere Klemmung zu gewährleisten.It can be seen from FIGS. 4 and 5 how two spring elements 8 in two caps 2 and 3 both electrically contact a PTC thermistor 1 and hold it mechanically between caps 2 and 3 by clamping. FIG. 5 specifically shows how the curved pieces 10 of the two spring elements 8 press with their convex side against the semiconductor wafer 1 and thus hold them mechanically in their position between the caps 2 and 3. From Figure 4 it can be seen that the arcuate piece 10 can be made wider than the free ends (in Figure 4, the free end 12 is visible), whereby the contact surface on the PTC thermistor 1 is sufficiently large to ensure secure clamping .

Zur Realisierung der mechanischen und elektrischen Kontaktierung sind auch andere Formen des Stückes 10 möglich. Die einzige Forderung besteht darin, daß eine ausreichende Kontaktierung gewährleistet bleibt.Other forms of the piece 10 are also possible for realizing the mechanical and electrical contacting. The only requirement is that sufficient contacting is guaranteed.

Die längeren freien Enden 12 der Federelemente 8 dienen gleichzeitig als elektrische Außenanschlüsse für das Kaltleiterbauelement, das durch die Kaltleiterpille 1, die Kappen 2 und 3 und die Federelemente 8 gebildet wird.The longer free ends 12 of the spring elements 8 simultaneously serve as electrical external connections for the PTC thermistor component, which is formed by the PTC thermistor pill 1, the caps 2 and 3 and the spring elements 8.

Da bei der erfindungsgemäßen Klemmkontaktierung nur ein Teil der Kaltleiterscheibe 1 durch die Kappen 2, 3 sowie die Kontaktierungsbereiche der Federelemente abgedeckt sind, wird gegenüber Ausführungsformen mit geschlossenen Gehäusen eine wesentlich bessere Wärmeabfuhr erreicht. Dazu können die Kappen auch von der in den Figuren dargestellten Form abweichende Formen besitzen.Since only a part of the PTC thermistor 1 is covered by the caps 2, 3 and the contacting areas of the spring elements in the terminal contacting according to the invention, a significantly better heat dissipation is achieved compared to embodiments with closed housings. For this purpose, the caps can also have shapes that differ from the shape shown in the figures.

Claims (6)

Vorrichtung zur Klemmkontaktierung von elektrischen Bauelemente, insbesondere von Kaltleitern, bei der eine Bauelementescheibe (1) durch mit ihr in Eingriff stehende Federelemente (8) in einer Halterung (2, 3) mechanisch gehalten und elektrisch kontaktiert ist,
dadurch gekennzeichnet,
daß die Halterung durch ein Paar von Ausnehmungen (4, 5) enthaltenden Kappen (2, 3) gebildet ist, daß die Federelemente (8) Zungen (9) aufweisen und daß die Zungen (9) bei in die Kappen (2, 3) eingesetzten Federelemente (8) in die Ausnehmungen (4, 5) der Kappen (2, 3) eingreifen und damit die Bauelementescheibe (1) und die Kappen (2, 3) in ihrer Lage zueinander positionieren.Device for clamping contacting of electrical components, in particular PTC thermistors, in which a component disc (1) is mechanically held and electrically contacted by spring elements (8) which are engaged with it in a holder (2, 3),
characterized,
that the holder is formed by a pair of recesses (4, 5) containing caps (2, 3), that the spring elements (8) have tongues (9) and that the tongues (9) are in the caps (2, 3) spring elements (8) inserted into the recesses (4, 5) of the caps (2, 3) and thus position the component washer (1) and the caps (2, 3) in their position relative to one another. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß eine der Kappen (2) einseitig geschlossene Nuten (6) zur Aufnahme eines freien Endes (11) der Federelemente (8) und die andere Kappe (3) beidseitig offene Nuten (7) aufweist, durch die das andere freie Ende (12) der Federelemente (8) durchsteckbar ist.Device according to claim 1,
characterized,
that one of the caps (2) has grooves (6) closed on one side for receiving a free end (11) of the spring elements (8) and the other cap (3) has grooves (7) open on both sides through which the other free end (12) the spring elements (8) can be pushed through. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß in den Kappen (2, 3) vorgesehene Nuten (6, 7) beidseitig offen sind.Device according to claim 1,
characterized,
that in the caps (2, 3) provided grooves (6, 7) are open on both sides. Vorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß ein zwischen den Zungen (9) liegendes mit der Bauelementescheibe (1) in Eingriff stehendes Stück (10) der Federelemente (8) in Richtung auf die Bauelementescheibe (1) konvex geformt ist.Device according to one of claims 1 to 3,
characterized,
that a piece (10) of the spring elements (8) lying between the tongues (9) and engaging with the component disc (1) is convex in the direction of the component disc (1). Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet,
daß das konvexe Stück (10) der Federelemente (8) breiter als deren freie Ende (11, 12) ist.Device according to claim 4,
characterized,
that the convex piece (10) of the spring elements (8) is wider than their free end (11, 12). Vorrichtung nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
daß die Kappen (2, 3) aus Kunststoff hergestellt sind.Device according to one of claims 1 to 5,
characterized,
that the caps (2, 3) are made of plastic.
EP93105689A 1992-04-15 1993-04-06 Appliance for contact clamping of electrical devices Expired - Lifetime EP0565998B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4212654 1992-04-15
DE4212654 1992-04-15

Publications (3)

Publication Number Publication Date
EP0565998A2 true EP0565998A2 (en) 1993-10-20
EP0565998A3 EP0565998A3 (en) 1994-09-07
EP0565998B1 EP0565998B1 (en) 1996-03-13

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Family Applications (1)

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EP93105689A Expired - Lifetime EP0565998B1 (en) 1992-04-15 1993-04-06 Appliance for contact clamping of electrical devices

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Country Link
EP (1) EP0565998B1 (en)
AT (1) ATE135489T1 (en)
DE (1) DE59301834D1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61180588A (en) * 1986-01-16 1986-08-13 Matsushita Refrig Co Positive characteristic thermistor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61180588A (en) * 1986-01-16 1986-08-13 Matsushita Refrig Co Positive characteristic thermistor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 4 (E-468)7. Januar 1987 & JP-A-61 180 588 (MATSUSHITA REFRIG CO) 13. August 1986 *

Also Published As

Publication number Publication date
EP0565998B1 (en) 1996-03-13
DE59301834D1 (en) 1996-04-18
ATE135489T1 (en) 1996-03-15
EP0565998A3 (en) 1994-09-07

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