EP0410119B1 - Temperature switch with bimetallic switch mechanism - Google Patents

Temperature switch with bimetallic switch mechanism Download PDF

Info

Publication number
EP0410119B1
EP0410119B1 EP90110937A EP90110937A EP0410119B1 EP 0410119 B1 EP0410119 B1 EP 0410119B1 EP 90110937 A EP90110937 A EP 90110937A EP 90110937 A EP90110937 A EP 90110937A EP 0410119 B1 EP0410119 B1 EP 0410119B1
Authority
EP
European Patent Office
Prior art keywords
circuit board
printed circuit
board according
casing
cover part
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
EP90110937A
Other languages
German (de)
French (fr)
Other versions
EP0410119A2 (en
EP0410119A3 (en
Inventor
Peter Hofsäss
Original Assignee
Hofsass Benjamin Michael
Hofsass Carola Rika
Hofsass Denise Petra
Hofsass Henrik Peter
Hofsass Marcel Peter
Hofsass Ulrika
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
Priority claimed from DE8908999U external-priority patent/DE8908999U1/de
Priority claimed from DE8915123U external-priority patent/DE8915123U1/de
Application filed by Hofsass Benjamin Michael, Hofsass Carola Rika, Hofsass Denise Petra, Hofsass Henrik Peter, Hofsass Marcel Peter, Hofsass Ulrika filed Critical Hofsass Benjamin Michael
Publication of EP0410119A2 publication Critical patent/EP0410119A2/en
Publication of EP0410119A3 publication Critical patent/EP0410119A3/en
Application granted granted Critical
Publication of EP0410119B1 publication Critical patent/EP0410119B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H37/5427—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing
    • H01H37/5436—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing mounted on controlled apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals

Definitions

  • the invention relates to a circuit board with a temperature switch, such as, in particular, temperature monitor for an electric motor.
  • temperature switches with bimetallic switching mechanisms are provided, which are fixed in the electrical circuit of the electric motor by contacting the electric motor - in particular on a printed circuit board to be attached to its stator and provided with conductor tracks. This is done by bending the flexible connecting wires of the temperature switch, if necessary after carrying out perforations in the circuit board, and soldering them flat to the corresponding conductor tracks of the circuit board. This must be done by hand.
  • a temperature switch in particular for a lighting device, is known from US Pat. No. 4,314,223.
  • This has a housing in which a bimetallic switching mechanism is arranged.
  • An extension with an undercut and two electrical connection pins are provided on the outside of the housing.
  • This temperature switch is inserted into a receiving device, the neck of the temperature switch being inserted into a receiving opening and the contact pins into corresponding contact sockets.
  • the receiving device has a spring element in the receiving opening, which engages behind the undercut of the inserted shoulder and thus causes the temperature switch to be locked in the receiving device.
  • the spring element simultaneously closes an electrical contact that connects a connection socket of the receiving device to a connecting line.
  • the other connection socket is firmly connected to another connection line.
  • DE-A-33 40 436 describes an electrical pressure switch in a housing.
  • Four locking legs are formed on the underside of the housing for mounting on a bearing plate.
  • the locking legs each have a recess into which a circuit board is snapped, the housing being held at a distance from the circuit board.
  • two contact pins are provided on the underside of the housing, which carry contact springs at their free end. These contact springs are pressed onto corresponding conductor tracks when the pressure switch is locked onto a circuit board.
  • the invention is based, to avoid the disadvantages mentioned, to provide a circuit board provided with a temperature switch, in which the connection of the circuit board and the switch, as well as the use and contacting thereof, can be largely automatic.
  • the electrical contacting and the mechanical connection of the switch to the circuit board are carried out separately, while in the prior art the mechanical connection and the electrical contacting take place together via the connecting wires to be bent.
  • the switch only has to be plugged onto the printed circuit board, be it perpendicular to it, or be it through laterally open ones Slits in the plane of the same, whereby the mechanical connection is first achieved.
  • electrical contacting of the connection contacts with the conductor tracks can also be made in an automated manner by means of soldering points.
  • the electrical circuit board according to the invention can be provided fully automatically with the temperature switch, the switch is then securely attached to the circuit board; in particular, the further electrical connections can also be made fully automatically and the entire printed circuit board unit with temperature switch can be handled in a simple and convenient manner for further processing.
  • the temperature switch can in particular first be handled as a piece and, for example, can be fed from a vibrating pot to an automatic assembly machine which automatically pushes its connection attachment through a corresponding opening in the printed circuit board and thus reliably fixes the switch thereon.
  • an automatic assembly machine which automatically pushes its connection attachment through a corresponding opening in the printed circuit board and thus reliably fixes the switch thereon.
  • the connection lugs are pushed through them, so that after the switch has been fixed on the circuit board in the manner described above, the electrical connection between the connection lugs and conductor tracks on the circuit board is also effected fully automatically simply by setting soldering points can be.
  • This part of the printed circuit board with the temperature switch combined in this way can then be further treated as bulk material in a simple and convenient manner and can be passed on for further processing.
  • the housing of the temperature switch has an electrically conductive lower housing part and a cover part made of electrically insulated material, or that the extension is provided with a slot extending in its longitudinal direction and projecting from the outside inwards, the lateral boundary areas of which form spring sections.
  • connection extension extends perpendicular to the surface of the cover part of the outer housing, in particular connection legs for electrical contacting extending parallel to the extension.
  • a further embodiment is characterized in that the pot part of the outer housing has an integrally formed connecting leg, the connecting leg being integrally connected to the pot part of the outer housing via a connecting section which is partially bent over the cover part.
  • the spring part is designed such that, in addition to the connecting leg projecting through the opening of the cover part of the outer housing, it has a connecting section which extends at right angles to this and is arranged within the housing and at the end opposite the connecting leg is integrally formed with spring legs which are slightly formed from the connecting section the plane of the connecting section are bent out.
  • Developments also provide that the connecting approach with a slot between two legs is provided and that the undercuts are formed by two-stage lugs, which are arranged at different distances from the surface of the cover part of the outer housing, in particular with the pot part of the outer housing via the cover part of this pressing tabs against the end faces of the pot part are formed.
  • the housing is provided with a projection which extends essentially perpendicularly from its surface, which has undercuts, and that connecting contacts extend parallel to the projection, it also being possible for the projection to be provided with a its longitudinal direction extending, from the outside inwardly extending slot is provided, the lateral boundary areas form spring sections.
  • the approach consists of plastic, in particular the and optionally with a cover is a plastic injection-molded part, and that the lower housing part is a deep-drawn metal part. In the latter case, it can further be provided that a connection contact is formed in one piece on the lower housing part, the connection contact being cut out from protrusions of the deep-drawn lower housing part.
  • connection of the lower part of the housing and the cover can take place in that the cover is held by bent holding tabs of the lower part of the housing and in particular further in that a connection contact is designed as a holding tab and extends radially inward from the outer edge of the housing via the cover and then perpendicularly from the cover is turned upwards.
  • the bimetallic switching mechanism has its own (inner) housing in the ( External) housing is arranged.
  • the housing of the temperature switch explained above serves only as an outer housing, while a conventional switchgear completely encapsulated in an inner housing is used in this, which can be taken from the series production of such switching mechanisms. This then does not have to be provided with connecting wires, as is otherwise the case, but rather is used as such directly in the lower part of the outer housing, it being provided that the inner housing has an inner housing pot and an inner housing cover part insulated from it, both from Metal.
  • connection contact is formed in one piece with a spring part which resiliently engages between the cover of the outer housing and the inner housing, the spring part also being formed by spring tabs bent from its plane relative to a connecting web.
  • the circuit board itself can be a conventional one and the temperature switch as such and in connection with other parts, in particular also on one that is optionally provided with electronic elements, can advantageously be fixed in the manner explained, the circuit board is preferably one ring-shaped, on the one hand the circuit board in the area of at least two non-electrically connected interconnects each has an opening at a distance corresponding to the distance of the connecting contacts and on the other hand a slot is formed between the openings, the width of which corresponds to that of an undercut web of the approach.
  • the slot is oriented perpendicular to the radius of the circuit board, on the other hand, slots extending essentially radially parallel to one another extend from the outside of the circuit board, in the middle of which the projection engages with its web, while the connecting contacts protrude through the outer.
  • a circuit board with a temperature switch is created which, in particular in the mechanical and electrical connection of the circuit board itself with the switch, no longer requires any manual work, but rather the connection can take place fully automatically (mechanical and electrical).
  • the manufacture of the temperature switch of the printed circuit board is simplified by the adaptation to it itself and can be automated since there are no longer any connecting wires manually must be soldered or welded to them.
  • the few individual parts of the temperature switch according to the invention can be automatically guided separately from one another in that the pot part of the outer housing is fed into a conveyor device, such as a conveyor chain.
  • the rear deraille with the inner housing are also automatically fed to it by simply shaking them in. They are then picked up by the corresponding processing device and inserted into the pot part.
  • the circuit board according to the invention has a temperature switch 1 with an (outer) housing 2, which has a lower housing part 3 and a housing cover part 4.
  • the bimetallic switching mechanism is accommodated in the housing 2 (not shown in detail), which can also be used as a complete switching mechanism, encapsulated in an inner housing, in the outer housing 2 (see below for this); the open rear derailleur could also be accommodated in the housing 2, which would then form the only housing of the rear derailleur.
  • a fastening or holding attachment 6 extends vertically upward from the cover part 4.
  • the holding projection 6 has two spring legs 11, 11a separated by a slot 12.
  • the legs 11, 11a are provided with undercuts 7, which are formed by holding lugs or shoulders 16 at a distance from the top surface of the cover part 4 on the holding attachment 6 and project laterally from a web part 9 of the holding attachment 6.
  • Recesses 10 are provided between the holding lugs 16 in order to be able to better apply solderings 27 to connecting parts 51 (see below) to be explained.
  • the slot 12, which extends in the longitudinal direction between the legs 11 and extends inwards from the outside perpendicular to the top surface of the cover 4, gives the spring legs 11, 11a their resilient properties.
  • connection lugs 13, 14, which are formed from dimensionally stable metal, also extend perpendicular to the top surface of the lid.
  • the switch 1 described so far is fastened according to FIGS. 4 to 6 in one way or another to an annular printed circuit board 20 for an electric motor.
  • the printed circuit board 20 has one or more conductor tracks 21, 22 which generally only extend over a partial circumference of the printed circuit board 20 and are not in direct electrical contact with one another.
  • the conductor tracks are used to make contact or to connect the coil windings by connecting the coil ends to the corresponding conductor tracks, generally by means of solder contact. which in turn are connected - also soldered - with connecting cables, by means of which the motor is connected to the voltage supply.
  • the coil ends are guided through bores or lateral slots from the side of the printed circuit board 20 facing away from the conductor tracks 21, 22 to the side of the conductor tracks.
  • the connecting cables are guided in the region of a partially circular outer recess of the printed circuit board and from there through adjacent bores and then soldered. This creates a certain strain relief.
  • the circuit board 20 of FIG. 3 now has a slot 23 extending perpendicular to the radius R between the two mutually parallel conductor tracks 21, 22, the length of the length of the extension 6 and its width just the width of the web 9 of the extension 6 corresponds.
  • the switch 1 is positively attached to the printed circuit board 20 by the retaining lug 6 having been inserted through the slot 23 by means of its spring sections which taper towards its free end until the shoulders 16 engage behind the printed circuit board 20, snap over the edges of the slot 23 and thus the Set switch 1 on the circuit board 20.
  • the connection contacts 13, 14 are guided through the openings 24, 26 and extend through them. The contacts 13, 14 are then connected to the conductor tracks 21, 22 by soldering 27 (FIG. 4; not shown in FIG. 3 for the sake of clarity).
  • three parallel slots 31, 32, 33 are provided in the printed circuit board free from its outer edge 28, the middle one of which has a length which again corresponds essentially to the length of the holding projection 6 and its width corresponds to the width of the web 9 of the retaining lug 6 corresponds, while the slots 32, 33 are arranged on both sides of the slot 31 at a distance which essentially corresponds to the distance between the connecting contacts 13, 14 of the switch 1 and the retaining lug 6.
  • the printed circuit board 20 is pushed in the area of the slot 31 between the housing 2 and the shoulders 16 on the retaining projection 6 of the switch 1 in such a way that the web 9 of the retaining projection 6 engages in the slot 31, while the connecting contacts 13, 14 through the slots 32, 33 protrude.
  • the connection contacts 13, 14 lie in the region of conductor tracks 21, 22, which are arranged here on the same circumference, but are electrically separated from one another by the slot 31.
  • soldering points 27 can again be provided for the electrical connection of the connections 13 and 14 to the conductor track regions 21 and 22, respectively.
  • FIGS. 7 and 8 show a preferred embodiment of the temperature switch in a partially sectioned illustration.
  • the temperature switch 1 also has, in a manner known per se, a bimetallic switching mechanism arranged in the inner housing 41, which can itself be designed in various ways.
  • the inner housing 41 consists of a pot part 42 and a cover part 43 which are electrically separated from one another by insulation 44, for example foils made of insulating material or insulating layers, the pot part 42 and cover part 43 being firmly connected to one another by a crimped edge 46 of the pot part 42, the latter being kept isolated from the cover part 43 by the insulation.
  • Pot part 3 and cover part 4 are electrically conductive and are each in electrical connection with one of the two contact parts of the bimetal switchgear which can be brought into contact with one another inside the housing 41, so that they form the two connections for the bimetallic switchgear.
  • the inner housing 41 is inserted into an (outer) housing 2.
  • the outer housing 2 also has a lower housing part 3 on the one hand and a cover part 4 on the other hand.
  • the lower housing part 3 consists of an electrically conductive material, for example steel.
  • the cover part 4 is made of insulating material, such as a high temperature resistant plastic or the like.
  • the cover part 4 is here also provided with a fastening or holding attachment 6, which has a slot 12 between two legs 11, 11a, which are formed and arranged in mirror image with respect to one another, which enables a certain elasticity of the legs 11, 11a perpendicular to their direction of extension .
  • the legs 11, 11a are provided with lugs or shoulders 16, 17 with which they can reach behind electrical circuit boards of different thicknesses, namely on the one hand with a thickness that corresponds to the distance between the shoulder 16 and the outer cover surface 18 of the cover part 4, and on the other hand a circuit board with less thickness, which corresponds to the distance between the shoulder 17 and the outer cover surface 18 of the cover part 4. Furthermore, by far Approach 6 an opening 25 is formed in the cover part 4, through which the connecting leg or contact 13 of a connecting part or contact spring part 51 projects.
  • the contact spring or connecting part 51 has, in addition to the connecting leg 13, a leaf spring part 52 which is formed by a connecting web 56 leading to the connecting leg 13 and by spring legs 53 which are formed in one piece with the connecting web 56 at the end opposite the connecting leg 13 and from the plane of the connecting web 56 are slightly bent out.
  • the connecting leg 13 extends substantially at right angles to the connecting web 56. This configuration allows the spring part 51 with its spring legs 53 and the connecting web 56 to be arranged between the cover part 43 of the inner housing and the cover part 4 of the outer housing 2, the connecting leg 13 being provided with an opening 25 protrudes to the outside of the cover part 4.
  • the spring part 51 with its spring legs 53 is pressed firmly against the conductive cover part 43 of the inner housing 41, so that a reliable Electrical contact between the conductive cover part 43 of the inner housing 41 and the spring part 51 is made so that the latter can be used for contacting the contact leg 22.
  • the contact pressure for the cover part 4 is formed, on the one hand, by tabs 49 formed in one piece on the upper edge 46 of the pot part 3, which are bent under contact pressure over the cover part 4, as can be seen in particular in FIG.
  • a further connecting part 45 is also formed in one piece with the pot part 3, which consists of a connecting part 47 emerging directly at the upper edge 28 of the pot part 3, which is also horizontal is bent over the cover part 4 and exerts a contact pressure on this.
  • the connecting part 47 merges in one piece into the connecting leg 14 which extends perpendicularly from the surface 18 of the cover part 9 and is aligned parallel to the connecting leg 13.
  • the temperature switch in the embodiment explained is in turn intended for use with an electrical circuit board.
  • This has 6 openings in the area of the connecting legs 13, 14 and the connecting extension, the length of which corresponds to the width of the connecting legs 13, 14 and the connecting extension 6 and the width of the thickness of the connecting legs 13, 14 and the strength of the connecting extension 6 in the latter Transition area to the actual cover part 4 corresponds and in particular lies below the distance between the opposite lugs 17 and 16 of the two connecting legs 13, 14.
  • the temperature switch can be connected fully automatically, for example after being fed from a vibrating pot, to a printed circuit board by inserting the extension 6 and the connecting legs 13, 14 through the corresponding openings in the printed circuit board, the leg parts 11, 11a being slightly pressed together, in each case until two Lugs 16 and 17 reach behind the circuit board 6 after passing through the approach and the temperature switch is reliably attached to this. Then the circuit board provided with the temperature switch can again be handled in a simple manner as a protective part. Further contacts can also be made can be carried out fully automatically, in so far as the printed circuit board has conductor tracks which end in the area of the openings receiving the connecting legs 13, 14, only electrical contact connections are made there by means of soldering points to the printed conductor tracks of the printed circuit board.
  • conventional encapsulated bimetallic switchgear can be used, which are not yet provided with connecting cables, simply by inserting them into the outer housing 2, contacting them in the manner described and then the housing in the form described by putting the cover on and fixing it is closed on the lower part. These steps can also be largely or completely automated.
  • the housing dimensions only increase by a fraction of a millimeter compared to the encapsulated rear derailleur.
  • the bimetallic switching mechanism can also be inserted as such into the lower housing part 3 of the housing and this can then be closed in a suitable manner, in addition to the configuration described, in particular ensuring a fluid-tight closure, as is the case with the encapsulated bimetal. Switchgear itself is the case.

Description

Die Erfindung betrifft eine Leiterplatte mit einem Temperaturschalter, wie insbesondere Temperaturwächter für einen Elektromotor.The invention relates to a circuit board with a temperature switch, such as, in particular, temperature monitor for an electric motor.

Bei vielen Einsatzzwecken müssen insbesondere Elektromotoren gegen Überstrom oder auch Übertemperatur geschützt werden. Es werden hierzu Temperaturschalter mit Bimetall-Schaltwerken vorgesehen, die an einer Kontaktierung des Elektromotors - insbesondere an einer an dessen Stator zu befestigenden, mit Leiterbahnen versehenen Leiterplatte - im Stromkreis des Elektromotors festgelegt werden. Dies geschieht dadurch, daß die flexiblen Anschlußdrähte des Temperaturschalters, gegebenenfalls nach Durchführung nach Durchbrechungen in der Leiterplatte umgebogen und flach an den entsprechenden Leiterbahnen der Leiterplatte festgelötet werden. Dieser Vorgang muß von Hand ausgeführt werden. Anschließend wird die Leiterplatte auf einem seitlichen Ansatz des Elektromotor-(Stators) aufgesezt, wobei der Bimetall-Schalter zwischen Leiterplatte und Motorwicklung zum Liegen kommt, wobei in diesem Bereich die Wicklungen zur Seite gedrückt werden müssen, damit die Leiterplatte ordnungsgemäß aufgesetzt werden kann. Es kommt dennoch vor, daß sie oft nicht genau senkrecht zur Drehachse, sondern verkantet zu dieser sitzt, da sie an der Stelle des Bimetall-Schalters zur Seite gedrückt wird. Dieser weist oft eine Auswölbung aufgrund von Vergußmasse auf und liegt daher auch nicht parallel zur Leiterplatte, sondern, oft auch durch einseitige Spannung durch das Verlöten an den Anschlußdrähten bedingt, verkantet zu dieser.For many purposes, electric motors in particular have to be protected against overcurrent or overtemperature. For this purpose, temperature switches with bimetallic switching mechanisms are provided, which are fixed in the electrical circuit of the electric motor by contacting the electric motor - in particular on a printed circuit board to be attached to its stator and provided with conductor tracks. This is done by bending the flexible connecting wires of the temperature switch, if necessary after carrying out perforations in the circuit board, and soldering them flat to the corresponding conductor tracks of the circuit board. This must be done by hand. Then the circuit board is placed on a side attachment of the electric motor (stator), the bimetal switch coming to rest between the circuit board and the motor winding, the windings in this area must be pushed aside so that the circuit board can be properly placed. However, it often happens that it is not exactly perpendicular to the axis of rotation, but tilted to it, since it is pushed aside at the location of the bimetal switch. This often has a bulge due to potting compound and is therefore not parallel to the circuit board, but, often due to one-sided tension caused by soldering to the connecting wires, canted to this.

Aus der US-PS 4 314 223 ist ein Temperaturschalter, insbesondere für eine Beleuchtungseinrichtung, bekannt. Dieser weist ein Gehäuse auf, in dem ein Bimetall-Schaltwerk angeordnet ist. Außen am Gehäuse sind ein Ansatz mit einer Hinterschneidung und zwei elektrische Anschlußstifte vorgesehen. Dieser Temperaturschalter wird in eine Aufnahmevorrichtung eingesteckt, wobei der Ansatz des Temperaturschalters in eine Aufnahmeöffnung und die Kontaktstifte in entsprechende Kontaktbuchsen eingeführt werden. Die Aufnahmevorrichtung weist in der Aufnahmeöffnung ein Federelement auf, welches die Hinterschneidung des eingeführten Ansatzes hintergreift und so eine Arretierung des Temperaturschalters in der Aufnahmevorrichtung bewirkt. Dabei schließt das Federelement gleichzeitig einen elektrischen Kontakt, der eine Anschlußbuchse der Aufnahmevorrichtung mit einer Anschlußleitung verbindet. Die andere Anschlußbuchse ist fest mit einer weiteren Anschlußleitung verbunden. Bei diesem bekannten Temperaturschalter wird als nachteilig empfunden, daß eine getrennte Aufnahmevorrichtung für den Temperaturschalter notwendig ist, daß die Aufnahmevorrichtung aus einer Vielzahal von Teilen aufgebaut ist und daß dementsprechend keine Automatisierung der Kontaktierung der für den Einsatz des Temperaturschalters notwendigen Aufnahmevorrichtung möglich ist. Eine direkte Anordnung des Temperaturschalters auf einer Leiterplatte ist nicht möglich.A temperature switch, in particular for a lighting device, is known from US Pat. No. 4,314,223. This has a housing in which a bimetallic switching mechanism is arranged. An extension with an undercut and two electrical connection pins are provided on the outside of the housing. This temperature switch is inserted into a receiving device, the neck of the temperature switch being inserted into a receiving opening and the contact pins into corresponding contact sockets. The receiving device has a spring element in the receiving opening, which engages behind the undercut of the inserted shoulder and thus causes the temperature switch to be locked in the receiving device. The spring element simultaneously closes an electrical contact that connects a connection socket of the receiving device to a connecting line. The other connection socket is firmly connected to another connection line. In this known temperature switch it is felt to be disadvantageous that a separate receiving device for the temperature switch is necessary, that the receiving device is made up of a large number of parts and that accordingly no automation of the contacting of the receiving device necessary for the use of the temperature switch is possible. A Direct placement of the temperature switch on a circuit board is not possible.

Die DE-A-33 40 436 beschreibt einen elektrischen Druckschalter in einem Gehäuse. Zur Montage auf einer Lagerplatte sind an der Unterseite des Gehäuses vier Rastbeine angeformt. Die Rastbeine weisen jeweils eine Ausnehmung auf, in die eine Leiterplatte eingerastet wird, wobei das Gehäuse auf Abstand zur Leiterplatte gehalten wird. Darüber hinaus sind an der Unterseite des Gehäuses zwei Kontaktzapfen vorgesehen, die an ihrem freien Ende Kontaktfedern tragen. Diese Kontaktfedern werden auf entsprechende Leiterbahnen gedrückt, wenn der Druckschalter an einer Leiterplatte verrastet wird.DE-A-33 40 436 describes an electrical pressure switch in a housing. Four locking legs are formed on the underside of the housing for mounting on a bearing plate. The locking legs each have a recess into which a circuit board is snapped, the housing being held at a distance from the circuit board. In addition, two contact pins are provided on the underside of the housing, which carry contact springs at their free end. These contact springs are pressed onto corresponding conductor tracks when the pressure switch is locked onto a circuit board.

Der Erfindung liegt die Aufgabe zugrunde, unter Vermeidung der genannten Nachteile eine mit einem Temperaturschalter versehene Leiterplatte zu schaffen, bei der die Verbindung von Leiterplatte und Schalter sowie Einsatz und Kontaktierung derselben weitgehend automatisch erfolgen kann.The invention is based, to avoid the disadvantages mentioned, to provide a circuit board provided with a temperature switch, in which the connection of the circuit board and the switch, as well as the use and contacting thereof, can be largely automatic.

Erfindungsgemäß wird die genannte Aufgabe durch eine Leiterplatte mit Temperaturschalter mit der Kombination der Merkmale des Anspruchs 1 gelöst.According to the invention, this object is achieved by a circuit board with a temperature switch with the combination of the features of claim 1.

Durch den mit zwei Federschenkeln versehenen Ansatz werden die elektrische Kontaktierung und die mechanische Verbindung des Schalters mit der Leiterplatte getrennt ausgeführt, während beim Stande der Technik die mechanische Verbindung und die elektrische Kontaktierung gemeinsam über die umzubiegenden anzuschließenden Anschlußdrähte erfolgt. Hierdurch muß der Schalter in einem ersten Schritt lediglich auf der Leiterplatte aufgesteckt werden, sei es senkrecht zu dieser, sei es durch seitlich offene Schlitze in der Ebene derselben, wodurch zunächst die mechanische Verbindung erzielt wird. Anschließend kann aufgrund der definierten Anschlußkontakte ebenfalls in automatisierter Weise die elektrische Kontaktierung der Anschlußkontakte mit den Leiterbahnen durch Lötpunkte erfolgen.Due to the approach provided with two spring legs, the electrical contacting and the mechanical connection of the switch to the circuit board are carried out separately, while in the prior art the mechanical connection and the electrical contacting take place together via the connecting wires to be bent. As a result, in a first step, the switch only has to be plugged onto the printed circuit board, be it perpendicular to it, or be it through laterally open ones Slits in the plane of the same, whereby the mechanical connection is first achieved. Then, due to the defined connection contacts, electrical contacting of the connection contacts with the conductor tracks can also be made in an automated manner by means of soldering points.

Die erfindungsgemäße elektrische Leiterplatte kann vollautomatisch mit dem Temperaturschalter versehen werden, der Schalter ist dann an der Leiterplatte sicher festgelegt; insbesondere können auch die weiteren elektrischen Verbindungen vollautomatisch hergestellt werden und die Gesamteinheit Leiterplatte mit Temperaturschalter ist in einfacher und bequemer Weise zur weiteren Verarbeitung handhabbar.The electrical circuit board according to the invention can be provided fully automatically with the temperature switch, the switch is then securely attached to the circuit board; in particular, the further electrical connections can also be made fully automatically and the entire printed circuit board unit with temperature switch can be handled in a simple and convenient manner for further processing.

Der Temperaturschalter kann insbesondere zunächst als Stückteil gehandhabt werden und beispielsweise aus einem Rütteltopf einer automatischen Bestückungsmaschine zugeführt werden, die seinen Verbindungsansatz automatisch durch einen entsprechenden Durchbruch der Leiterplatte hindurchdrückt und damit den Schalter zuverlässig an dieser festlegt. In gleicher Weise werden durch ebenfalls entsprechende Durchbrüche an der Leiterplatte die Anschlußlaschen durch diese hindurchgedrückt, so daß nach Festlegung des Schalters an der Leiterplatte in der vorstehend erläuterten Weise die elektrische Verbindung zwischen den Anschlußlaschen und Leiterbahnen auf der Leiterplatte einfach durch Setzen von Lötpunkten ebenfalls vollautomatisch bewirkt werden kann. Dieses derart kombinierte Teil aus Leiterplatte mit Temperaturschalter kann dann insbesondere in einfacher und bequemer Weise weiter als Schüttgut behandelt und der weiteren Verarbeitung zugeführt werden.The temperature switch can in particular first be handled as a piece and, for example, can be fed from a vibrating pot to an automatic assembly machine which automatically pushes its connection attachment through a corresponding opening in the printed circuit board and thus reliably fixes the switch thereon. In the same way, through corresponding openings on the printed circuit board, the connection lugs are pushed through them, so that after the switch has been fixed on the circuit board in the manner described above, the electrical connection between the connection lugs and conductor tracks on the circuit board is also effected fully automatically simply by setting soldering points can be. This part of the printed circuit board with the temperature switch combined in this way can then be further treated as bulk material in a simple and convenient manner and can be passed on for further processing.

Bevorzugte Weiterbildungen sehen vor, daß das Gehäuse des Temperaturschalters ein elektrisch leitendes Gehäuseunterteil und ein Deckteil aus elektrisch isoliertem Material aufweist beziehungsweise daß der Ansatz mit einem sich in seiner Längsrichtung erstreckenden, von außen nach innen ragenden Schlitz versehen ist, dessen seitliche Begrenzungsbereiche Federabschnitte bilden.Preferred developments provide that the housing of the temperature switch has an electrically conductive lower housing part and a cover part made of electrically insulated material, or that the extension is provided with a slot extending in its longitudinal direction and projecting from the outside inwards, the lateral boundary areas of which form spring sections.

Eine andere bevorzugte Ausgestaltung sieht vor, daß der Verbindungsansatz sich senkrecht zur Oberfläche des Deckteils des Außengehäuses erstreckt, wobei insbesondere weiterhin Anschlußschenkel zur elektrischen Kontaktierung sich parallel zum Ansatz erstrecken.Another preferred embodiment provides that the connecting extension extends perpendicular to the surface of the cover part of the outer housing, in particular connection legs for electrical contacting extending parallel to the extension.

Eine weitere Ausgestaltung ist dadurch gekennzeichnet, daß das Topfteil des Außengehäuses einen einstückig mit ihm ausgebildeten Anschlußschenkel aufweist, wobei der Anschlußschenkel über einen teilweise über das Deckteil gebogenen Verbindungsabschnitt einstückig mit dem Topfteil des Außengehäuses verbunden ist.A further embodiment is characterized in that the pot part of the outer housing has an integrally formed connecting leg, the connecting leg being integrally connected to the pot part of the outer housing via a connecting section which is partially bent over the cover part.

Das Federteil ist derart ausgebildet, daß es neben dem durch den Durchbruch des Deckteils des Außengehäuses ragenden Anschlußschenkel einen sich rechtwinklig zu diesem erstreckenden, innerhalb des Gehäuses angeordneten Verbindungsabschnitt aufweist, an dessen dem Anschlußschenkel entgegengesetzten Ende mit dem Verbindungsabschnitt einstückig Federschenkel ausgebildet sind, die leicht aus der Ebene des Verbindungsabschnittes herausgebogen sind.The spring part is designed such that, in addition to the connecting leg projecting through the opening of the cover part of the outer housing, it has a connecting section which extends at right angles to this and is arranged within the housing and at the end opposite the connecting leg is integrally formed with spring legs which are slightly formed from the connecting section the plane of the connecting section are bent out.

Weiterbildungen sehen darüber hinaus vor, daß der Verbindungsansatz mit einem Schlitz zwischen zwei Schenkeln versehen ist und daß die Hinterschneidungen durch zweistufige Nasen gebildet werden, die mit verschiedenen Abständen zur Oberfläche des Deckteils des Außengehäuses angeordnet sind, wobei insbesondere mit dem Topfteil des Außengehäuses über das Deckteil dieses gegen die Stirnseiten des Topfteils drückende Laschen ausgebildet sind.Developments also provide that the connecting approach with a slot between two legs is provided and that the undercuts are formed by two-stage lugs, which are arranged at different distances from the surface of the cover part of the outer housing, in particular with the pot part of the outer housing via the cover part of this pressing tabs against the end faces of the pot part are formed.

In bevorzugter Weise ist weiter vorgesehen, daß das Gehäuse mit einem sich von seiner Oberfläche im wesentlichen senkrecht erstreckenden Ansatz versehen ist, der Hinterschneidungen aufweist, und daß Anschlußkontakte sich parallel zum Ansatz erstrecken, wobei weiterhin vorgesehen sein kann, daß der Ansatz mit einem sich in seiner Längsrichtung erstreckenden, von außen nach innen ragenden Schlitz versehen ist, dessen seitliche Begrenzungsbereiche Federabschnitte bilden. Weitere bevorzugte Ausbildungen sehen vor, daß der Ansatz aus Kunststoff besteht, wobei insbesondere der sowie gegebenenfalls mit Deckel ein Kunststoffspritzteil ist, und daß das Gehäuseunterteil ein tiefgezogenes Metallteil ist. In letzterem Falle kann weiterhin vorgesehen sein, daß ein Anschlußkontakt einstückig am Gehäuseunterteil ausgebildet ist, wobei der Anschlußkontakt aus Überständen des tiefgezogenen Gehäuseunterteils ausgeschnitten ist. Auch diese Herstellungsschritte sind weitgehend bzw. vollständig automatisierbar, so daß erhebliche fertigungstechnische Vorteile erzielt werden. Die Verbindung von Gehäuseunterteil und Deckel kann dadurch erfolgen, daß der Deckel durch umgebogene Haltelaschen des Gehäuseunterteils gehalten ist und insbesondere weiterhin dadurch, daß ein Anschlußkontakt als Haltelasche ausgebildet ist und sich vom Außenrand des Gehäuses über den Deckel radial nach innen erstreckt und dann senkrecht vom Deckel nach oben abgebogen ist.In a preferred manner, it is further provided that the housing is provided with a projection which extends essentially perpendicularly from its surface, which has undercuts, and that connecting contacts extend parallel to the projection, it also being possible for the projection to be provided with a its longitudinal direction extending, from the outside inwardly extending slot is provided, the lateral boundary areas form spring sections. Further preferred designs provide that the approach consists of plastic, in particular the and optionally with a cover is a plastic injection-molded part, and that the lower housing part is a deep-drawn metal part. In the latter case, it can further be provided that a connection contact is formed in one piece on the lower housing part, the connection contact being cut out from protrusions of the deep-drawn lower housing part. These manufacturing steps can also be largely or completely automated, so that considerable manufacturing advantages are achieved. The connection of the lower part of the housing and the cover can take place in that the cover is held by bent holding tabs of the lower part of the housing and in particular further in that a connection contact is designed as a holding tab and extends radially inward from the outer edge of the housing via the cover and then perpendicularly from the cover is turned upwards.

Während das Schaltwerk an sich und als solches in das Gehäuseunterteil des Gehäuses eingesetzt werden könnte, wobei eine fluiddichte Abdichtung zwischen Unterteil und Deckel vorzusehen ist, sieht eine äußerst bevorzugte Ausgestaltung vor, daß das Bimetall-Schaltwerk mit einem eigenen (Innen-)Gehäuse im (Außen-)Gehäuse angeordnet ist. Das weiter oben erläuterte Gehäuse des Temperaturschalters dient in diesem Falle nur als Außengehäuse, während in dieses dann ein herkömmliches, vollständig in einem Innengehäuse gekapseltes Schaltwerk eingesetzt wird, das aus der Serienproduktion derartiger Schaltwerke genommen werden kann. Dieses muß dann nicht, wie dies sonst an sich der Fall ist, mit Anschlußdrähten versehen werden, sondern wird als solches unmittelbar in das Unterteil des Außengehäuses eingesetzt, wobei hierbei vorgesehen ist, daß das Innengehäuse einen Innengehäusetopf und ein von diesem isoliertes Innengehäusedeckteil, beide aus Metall, aufweist. Diese Ausgestaltung bietet den weiteren Vorteil, daß neben dem über Gehäusetopf des Innengehäuses und Unterteil des Außengehäuses sowie einem mit diesen verbundenen, vorzugsweise einstückig ausgebildeten Anschlußkontakt auch die zweite Kontaktierung vereinfacht werden kann. Hierzu ist in äußerst bevorzugter Ausgestaltung vorgesehen, daß ein Anschlußkontakt einstückig mit einem Federteil ausgebildet ist, welches federnd zwischen Deckel des Außengehäuses und dem Innengehäuse eingreift, wobei weiterhin das Federteil durch gegenüber einem Verbindungssteg aus dessen Ebene abgebogene Federlaschen gebildet ist. Bei dieser Ausgestaltung muß nach Einsetzen des Schaltwerks mit Innengehäuse in das Unterteil des Außengehäuses lediglich der mit dem Federabschnitt versehene Anschlußkontakt auf das Deckteil des Innengehäuses aufgesetzt werden - gegebenenfalls nachdem er von der Innenseite des Deckels des Außengehäuses mit dem Kontaktteil durch dieses geführt wurde -. Anschließend wird der Deckel des Außengehäuses aufgesetzt und in der oben beschriebenen Weise durch die umzubiegenden Haltelaschen gehalten.While the switch mechanism itself and as such could be inserted into the lower housing part of the housing, with a fluid-tight seal between the lower part and the cover, an extremely preferred embodiment provides that the bimetallic switching mechanism has its own (inner) housing in the ( External) housing is arranged. In this case, the housing of the temperature switch explained above serves only as an outer housing, while a conventional switchgear completely encapsulated in an inner housing is used in this, which can be taken from the series production of such switching mechanisms. This then does not have to be provided with connecting wires, as is otherwise the case, but rather is used as such directly in the lower part of the outer housing, it being provided that the inner housing has an inner housing pot and an inner housing cover part insulated from it, both from Metal. This configuration offers the further advantage that, in addition to the housing pot of the inner housing and lower part of the outer housing and a connection contact, preferably integrally formed therewith, the second contact can also be simplified. For this purpose, it is provided in an extremely preferred embodiment that a connection contact is formed in one piece with a spring part which resiliently engages between the cover of the outer housing and the inner housing, the spring part also being formed by spring tabs bent from its plane relative to a connecting web. In this embodiment, after inserting the rear derailleur with the inner housing into the lower part of the outer housing, only the connection contact provided with the spring section has to be placed on the cover part of the inner housing - if necessary after passing through from the inside of the cover of the outer housing to the contact part this was done -. The cover of the outer housing is then placed on and held in the manner described above by the retaining tabs to be bent.

Während die Leiterplatte an sich eine herkömmliche sein kann und der Temperaturschalter auch als solcher und in Verbindung mit anderen Teilen, insbesondere auch an einer solchen, die gegebenenfalls mit elektronischen Elementen versehen ist, vorteilhafterweise in der erläuterten Weise festgelegt werden kann, ist die Leiterplatte vorzugsweise eine ringförmige, wobei einerseits die Leiterplatte im Bereich zumindestens zweier nicht miteinander elektrisch leitend verbundener Leiterbahnen je einen Durchbruch in einem dem Abstand der Anschlußkontakte entsprechenden Abstand aufweist und wobei andererseits zwischen den Durchbrüchen ein Schlitz ausgebildet ist, dessen Breite der eines hinterschnittenen Stegs des Ansatzes entspricht. Insbesondere ist vorgesehen, daß der Schlitz senkrecht zum Radius der Leiterplatte ausgerichtet ist, wobei andererseits sich von der Außenseite der Leiterplatte im wesentlichen radial parallel zueinander gerichtete Schlitze erstrecken, in deren mittleren der Ansatz mit seinem Steg eingreift, während durch die äußeren die Anschlußkontakte hindurchragen.While the circuit board itself can be a conventional one and the temperature switch as such and in connection with other parts, in particular also on one that is optionally provided with electronic elements, can advantageously be fixed in the manner explained, the circuit board is preferably one ring-shaped, on the one hand the circuit board in the area of at least two non-electrically connected interconnects each has an opening at a distance corresponding to the distance of the connecting contacts and on the other hand a slot is formed between the openings, the width of which corresponds to that of an undercut web of the approach. In particular, it is provided that the slot is oriented perpendicular to the radius of the circuit board, on the other hand, slots extending essentially radially parallel to one another extend from the outside of the circuit board, in the middle of which the projection engages with its web, while the connecting contacts protrude through the outer.

Insgesamt wird erfindungsgemäß eine Leiterplatte mit Temperaturschalter geschaffen, die insbesondere in der mechanischen und elektrischen Verbindung von Leiterplatte an sich mit Schalter keinerlei Handarbeit mehr erfordert, bei der vielmehr die Verbindung vollautomatisch (mechanisch und elektrisch) geschehen kann. Darüber hinaus ist die Herstellung des Temperaturschalters der Leiterplatte durch die Anpassung an diese selbst vereinfacht und kann automatisiert werden, da keine Anschlußdrähte mehr manuell an diesen festgelötet oder festgeschweißt werden müssen. Vielmehr können die wenigen Einzelteile des erfindungsgemäßen Temperaturschalters automatisch separat zueinander geführt werden, indem in einer Fördereinrichtung, wie einer Förderkette, das Topfteil des Außengehäuses zugeführt wird. Diesem werden die mit dem Innengehäuse versehenen Schaltwerke aus einem Rütteltopf ebenfalls automatisch zugeführt, indem sie einfach hineingeschüttelt werden müssen. Sie werden dann von der entsprechenden Bearbeitungsvorrichtung aufgenommen und in das Topfteil eingesetzt. Anschließend werden das Federteil und das Deckteil des Außengehäuses aufgesetzt und schließlich die Laschen des Topfteils des Außengehäuses sowie dessen Anschlußlasche bzw. genauer der Verbindungsanschluß zu dessen Anschlußlasche über das Deckteil gebogen, wodurch dieses gegen die Stirnseiten des Topfteils angedrückt wird und gleichzeitig das Federteil unter Spannung gesetzt wird, so daß zwischen dem Deckel des Innengehäuses und dem aus dem Deckteil des Außengehäuses herausragenden Anschlußschenkel eine elektrische Verbindung zuverlässig hergestellt wird.Overall, according to the invention, a circuit board with a temperature switch is created which, in particular in the mechanical and electrical connection of the circuit board itself with the switch, no longer requires any manual work, but rather the connection can take place fully automatically (mechanical and electrical). In addition, the manufacture of the temperature switch of the printed circuit board is simplified by the adaptation to it itself and can be automated since there are no longer any connecting wires manually must be soldered or welded to them. Rather, the few individual parts of the temperature switch according to the invention can be automatically guided separately from one another in that the pot part of the outer housing is fed into a conveyor device, such as a conveyor chain. The rear derailleurs with the inner housing are also automatically fed to it by simply shaking them in. They are then picked up by the corresponding processing device and inserted into the pot part. Then the spring part and the cover part of the outer housing are put on and finally the tabs of the pot part of the outer housing and its connecting strap or more precisely the connection to its connecting bracket are bent over the cover part, whereby this is pressed against the end faces of the pot part and at the same time the spring part is put under tension is, so that an electrical connection is reliably established between the cover of the inner housing and the connecting leg protruding from the cover part of the outer housing.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den Ansprüchen und aus der nachfolgenden Beschreibung, in der ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die Zeichnung im einzelnen erläutert ist. Dabei zeigt:

Figur 1
eine bevorzugte Ausführungsform eines im Rahmen der Erfindung eingesetzten Temperaturschalters in Seitenansicht entsprechend dem Pfeil I der Figur 2;
Figur 2
eine Draufsicht auf den Schalter der Figur 1 entsprechend dem Pfeil II der Figur 1;
Figur 3
einen Ausschnitt einer ringförmigen Leiterplatte für einen Elektromotor mit untergesetztem Schalter der Figur 1;
Figur 4
einen Teilschnitt entsprechend IV-IV der Figur 3;
Figur 5
eine Teildarstellung einer entsprechenden ringförmigen Leiterplatte mit Radialschlitz und in diesem eingeschobenen Halteansatz des Schalters;
Figur 6
eine Schnittdarstellung entsprechend der der Figur 4 für die Ausgestaltung der Figur 5;
Figur 7
eine vergrößerte Darstellung eines Schalters ähnlich dem der Figur 1 mit teilweise weggebrochenen Bereichen; und
Figur 8
eine Aufsicht auf den Schalter der Figur 7.
Further advantages and features of the invention result from the claims and from the following description, in which an embodiment of the invention is explained in detail with reference to the drawing. It shows:
Figure 1
a preferred embodiment of a temperature switch used in the context of the invention in side view corresponding to the arrow I of Figure 2;
Figure 2
a plan view of the switch of Figure 1 according to the arrow II of Figure 1;
Figure 3
a section of an annular circuit board for an electric motor with a switch below the figure 1;
Figure 4
a partial section corresponding to IV-IV of Figure 3;
Figure 5
a partial view of a corresponding annular circuit board with a radial slot and inserted in this retaining lug of the switch;
Figure 6
a sectional view corresponding to that of Figure 4 for the embodiment of Figure 5;
Figure 7
an enlarged view of a switch similar to that of Figure 1 with partially broken areas; and
Figure 8
a top view of the switch of Figure 7.

Die erfindungsgemäße Leiterplatte (Fig. 3 bis 6) weist einen Temperaturschalter 1 mit einem (Außen-)Gehäuse 2 auf, das ein Gehäuseunterteil 3 und ein Gehäuse-Deckteil 4 hat. In dem Gehäuse 2 ist das Bimetall-Schaltwerk untergebracht (im einzelnen nicht dargestellt), das zusätzlich als komplettes Schaltwerk, gekapselt in einem Innengehäuse, in das Außengehäuse 2 eingesetzt sein kann (hierzu weiter unten), aber nicht sein muß; es könnte auch das offene Schaltwerk in dem Gehäuse 2 untergebracht sein, das dann das einzige Gehäuse des Schaltwerks bilden würde.The circuit board according to the invention (FIGS. 3 to 6) has a temperature switch 1 with an (outer) housing 2, which has a lower housing part 3 and a housing cover part 4. The bimetallic switching mechanism is accommodated in the housing 2 (not shown in detail), which can also be used as a complete switching mechanism, encapsulated in an inner housing, in the outer housing 2 (see below for this); the open rear derailleur could also be accommodated in the housing 2, which would then form the only housing of the rear derailleur.

Von dem Deckteil 4 erstreckt sich ein Befestigungs- oder Halteansatz 6 senkrecht nach oben. Der Halteansatz 6 weist zwei durch einen Schlitz 12 getrennte Federschenkel 11, 11a auf. Die Schenkel 11, 11a sind mit Hinterschneidungen 7 versehen, die durch Haltenasen oder Schultern 16 im Abstand von der Deckfläche des Deckteils 4 am Halteansatz 6 ausgebildet sind und ein Stegteil 9 des Halteansatzes 6 seitlich überragen. Zwischen den Haltenasen 16 sind Aussparungen 10 vorgesehen, um Lötungen 27 an noch zu erläuternden Anschlußteilen 51 (s.u.) besser anbringen zu können. Der sich zwischen den Schenkeln 11 in deren Längsrichtung erstreckende, von außen senkrecht zur Deckfläche des Deckels 4 nach innen reichende Schlitz 12 verleiht den Federschenkeln 11, 11a ihre federnden Eigenschaften. Mit Abstand zum Halteansatz 6 erstrecken sich ebenfalls senkrecht zur Deckfläche des Deckels 4 Anschlußlaschen 13, 14, die aus formstabilem Metall ausgebildet sind. Der insoweit beschriebene Schalter 1 ist gemäß den Figuren 4 bis 6 in der einen oder anderen Weise an einer ringförmigen Leiterplatte 20 für einen Elektromotor befestigt. Die Leiterplatte 20 weist ein oder mehrere Leiterbahnen 21, 22 auf, die sich in der Regel lediglich über einen Teilumfang der Leiterplatte 20 erstrecken und elektrisch nicht in unmittelbarem Kontakt miteinander stehen. Die Leiterbahnen dienen zur Kontaktierung bzw. zum Anschluß der Spulenwicklungen, indem die Spulenenden mit den entsprechenden Leiterbahnen verbunden sind, in der Regel durch Lötkontaktierung, die wiederum mit Anschlußkabeln verbunden - ebenfalls verlötet - sind, mittels derer der Motor an die Spannungsversorgung angeschlossen wird. Die Spulenenden werden dabei durch Bohrungen oder seitliche Schlitze von der den Leiterbahnen 21, 22 abgewandten Seite der Leiterplatte 20 auf die Seite der Leiterbahnen geführt. Die Anschlußkabel werden im Bereich einer teilkreisförmigen äußeren Ausnehmung der Leiterplatte zu dieser und von dieser aus durch diese benachbarten Bohrungen hindurchgeführt sowie anschließend verlötet. Hierdurch wird eine gewisse Zugentlastung geschaffen.A fastening or holding attachment 6 extends vertically upward from the cover part 4. The holding projection 6 has two spring legs 11, 11a separated by a slot 12. The legs 11, 11a are provided with undercuts 7, which are formed by holding lugs or shoulders 16 at a distance from the top surface of the cover part 4 on the holding attachment 6 and project laterally from a web part 9 of the holding attachment 6. Recesses 10 are provided between the holding lugs 16 in order to be able to better apply solderings 27 to connecting parts 51 (see below) to be explained. The slot 12, which extends in the longitudinal direction between the legs 11 and extends inwards from the outside perpendicular to the top surface of the cover 4, gives the spring legs 11, 11a their resilient properties. At a distance from the retaining lug 6, 4 connecting lugs 13, 14, which are formed from dimensionally stable metal, also extend perpendicular to the top surface of the lid. The switch 1 described so far is fastened according to FIGS. 4 to 6 in one way or another to an annular printed circuit board 20 for an electric motor. The printed circuit board 20 has one or more conductor tracks 21, 22 which generally only extend over a partial circumference of the printed circuit board 20 and are not in direct electrical contact with one another. The conductor tracks are used to make contact or to connect the coil windings by connecting the coil ends to the corresponding conductor tracks, generally by means of solder contact. which in turn are connected - also soldered - with connecting cables, by means of which the motor is connected to the voltage supply. The coil ends are guided through bores or lateral slots from the side of the printed circuit board 20 facing away from the conductor tracks 21, 22 to the side of the conductor tracks. The connecting cables are guided in the region of a partially circular outer recess of the printed circuit board and from there through adjacent bores and then soldered. This creates a certain strain relief.

Die Leiterplatte 20 der Figur 3 weist nun zwischen den beiden parallel mit Abstand zueinander verlaufenden Leiterbahnen 21, 22 einen sich senkrecht zum Radius R erstreckenden Schlitz 23 auf, dessen Länge der Länge des Ansatzes 6 und dessen Breite gerade der Breite des Stegs 9 des Ansatzes 6 entspricht.The circuit board 20 of FIG. 3 now has a slot 23 extending perpendicular to the radius R between the two mutually parallel conductor tracks 21, 22, the length of the length of the extension 6 and its width just the width of the web 9 of the extension 6 corresponds.

Beidseitig des Schlitzes 23 und mit Abstand zu diesem sind Bohrungen 24, 26 angeordnet. Der Schalter 1 ist formschlüssig an der Leiterplatte 20 festgelegt, indem der Halteansatz 6 mittels seiner zu ihrem freien Ende konisch zulaufenden Federabschnitte durch den Schlitz 23 hindurchgesteckt wurde, bis die Schultern 16 die Leiterplatte 20 hintergreifen, über die Ränder des Schlitzes 23 schnappen und derart den Schalter 1 an der Leiterplatte 20 festlegen. Gleichzeitig werden die Anschlußkontakte 13, 14 durch die Durchbrüche 24, 26 geführt und erstrecken sich durch diese hindurch. Die Kontakte 13, 14 werden anschließend mit den Leiterbahnen 21, 22 durch Lötung 27 verbunden (Figur 4; in Figur 3 der Übersichtlichkeit halber nicht dargestellt).Bores 24, 26 are arranged on both sides of the slot 23 and at a distance from it. The switch 1 is positively attached to the printed circuit board 20 by the retaining lug 6 having been inserted through the slot 23 by means of its spring sections which taper towards its free end until the shoulders 16 engage behind the printed circuit board 20, snap over the edges of the slot 23 and thus the Set switch 1 on the circuit board 20. At the same time, the connection contacts 13, 14 are guided through the openings 24, 26 and extend through them. The contacts 13, 14 are then connected to the conductor tracks 21, 22 by soldering 27 (FIG. 4; not shown in FIG. 3 for the sake of clarity).

Dieser beschriebene Vorgang kann im Gegensatz zur Einzelfestlegung der Anschlußdrähte des Bimetall-Schalters nach dem Stand der Technik, wo Handarbeit erforderlich ist, vollständig automatisch erfolgen.In contrast to the individual determination of the connecting wires of the bimetal switch according to the prior art, where manual work is required, this process can be carried out completely automatically.

Bei der Ausgestaltung der Figuren 5 und 6 sind in der Leiterplatte frei von deren Außenrand 28 drei parallele Schlitze 31, 32, 33 vorgesehen, deren mittlerer eine Länge aufweist, die wieder im wesentlichen der Länge des Halteansatzes 6 entspricht und dessen Breite der Breite des Stegs 9 des Halteansatzes 6 entspricht, während die Schlitze 32, 33 beidseitig des Schlitzes 31 in einem Abstand angeordnet sind, der im wesentlichen dem Abstand der Anschlußkontakte 13, 14 des Schalters 1 zum Halteansatz 6 entspricht. Bei dieser Ausgestaltung wird die Leiterplatte 20 im Bereich des Schlitzes 31 derart zwischen Gehäuse 2 und den Schultern 16 am Halteansatz 6 des Schalters 1 geschoben, daß der Steg 9 des Halteansatzes 6 in den Schlitz 31 eingreift, während die Anschlußkontakte 13, 14 durch die Schlitze 32, 33 ragen. Die Anschlußkontakte 13, 14 liegen dabei im Bereich von Leiterbahnen 21, 22, die hier auf dem gleichen Kreisumfang angeordnet sind, aber durch den Schlitz 31 elektrisch voneinander getrennt sind. Auch hier können wieder Lötstellen 27 zur elektrischen Verbindung der Anschlüsse 13 bzw. 14 mit den Leiterbahnbereichen 21 bzw. 22 vorgesehen werden.In the embodiment of FIGS. 5 and 6, three parallel slots 31, 32, 33 are provided in the printed circuit board free from its outer edge 28, the middle one of which has a length which again corresponds essentially to the length of the holding projection 6 and its width corresponds to the width of the web 9 of the retaining lug 6 corresponds, while the slots 32, 33 are arranged on both sides of the slot 31 at a distance which essentially corresponds to the distance between the connecting contacts 13, 14 of the switch 1 and the retaining lug 6. In this embodiment, the printed circuit board 20 is pushed in the area of the slot 31 between the housing 2 and the shoulders 16 on the retaining projection 6 of the switch 1 in such a way that the web 9 of the retaining projection 6 engages in the slot 31, while the connecting contacts 13, 14 through the slots 32, 33 protrude. The connection contacts 13, 14 lie in the region of conductor tracks 21, 22, which are arranged here on the same circumference, but are electrically separated from one another by the slot 31. Here, too, soldering points 27 can again be provided for the electrical connection of the connections 13 and 14 to the conductor track regions 21 and 22, respectively.

Die Figuren 7 und 8 zeigen eine bevorzugte Ausgestaltung des Temperaturschalters in teilweise geschnittener Darstellung. Hier weist der Temperaturschalter 1 ebenfalls in an sich bekannter Weise ein im Innengehäuse 41 angeordnetes Bimetall-Schaltwerk auf, das selbst in verschiedener Weise ausgestaltet sein kann.FIGS. 7 and 8 show a preferred embodiment of the temperature switch in a partially sectioned illustration. Here, the temperature switch 1 also has, in a manner known per se, a bimetallic switching mechanism arranged in the inner housing 41, which can itself be designed in various ways.

Das Innengehäuse 41 besteht aus einem Topfteil 42 und einem Deckteil 43, die durch eine Isolierung 44, beispielsweise Folien aus Isoliermaterial oder Isolierschichten, elektrisch voneinander getrennt sind, wobei Topfteil 42 und Deckteil 43 durch einen umgekrimpten Rand 46 des Topfteils 42 miteinander fest verbunden sind, wobei letzterer vom Deckteil 43 durch die Isolierung isoliert gehalten wird. Topfteil 3 und Deckteil 4 sind elektrisch leitend ausgebildet und stehen jeweils mit einem der beiden in Kontakt miteinander bringbaren Kontaktteile des Bimetall-Schaltwerks im Inneren des Gehäuses 41 in elektrischer Verbindung, so daß sie die beiden Anschlüsse für das Bimetall-Schaltwerk bilden. Das Innengehäuse 41 ist erfindungsgemäß in ein (Außen-)Gehäuse 2 eingesetzt. Das Außengehäuse 2 weist einerseits ebenfalls ein Gehäuseunterteil 3, andererseits ein Deckteil 4 auf.The inner housing 41 consists of a pot part 42 and a cover part 43 which are electrically separated from one another by insulation 44, for example foils made of insulating material or insulating layers, the pot part 42 and cover part 43 being firmly connected to one another by a crimped edge 46 of the pot part 42, the latter being kept isolated from the cover part 43 by the insulation. Pot part 3 and cover part 4 are electrically conductive and are each in electrical connection with one of the two contact parts of the bimetal switchgear which can be brought into contact with one another inside the housing 41, so that they form the two connections for the bimetallic switchgear. According to the invention, the inner housing 41 is inserted into an (outer) housing 2. The outer housing 2 also has a lower housing part 3 on the one hand and a cover part 4 on the other hand.

Das Gehäuseunterteil 3 besteht aus elektrisch leitendem Material, beispielsweise aus Stahl. Das Deckteil 4 besteht aus isolierendem Material, wie einem hochtemperaturbeständigen Kunststoff oder dergleichen. Das Deckteil 4 ist auch hier mit einem Befestigungs- oder Halteansatz 6 versehen, der zwischen zwei Schenkeln 11, 11a, die spiegelbildlich zueinander ausgebildet und angeordnet sind, einen Schlitz 12 aufweist, der eine gewisse Elastizität der Schenkel 11, 11a senkrecht zu ihrer Erstreckungsrichtung ermöglicht. Die Schenkel 11, 11a sind mit Nasen oder Schultern 16, 17 versehen, mit der sie elektrische Leiterplatten mit verschiedenen Stärken hintergreifen können, nämlich einerseits mit einer Stärke, die dem Abstand der Schulter 16 zur äußeren Deckfläche 18 des Deckteils 4 entspricht, andererseits eine Leiterplatte mit geringerer Stärke, die dem Abstand der Schulter 17 zur äußeren Deckfläche 18 des Deckteils 4 entspricht. Weiterhin ist mit Abstand zum Ansatz 6 in dem Deckteil 4 ein Durchbruch 25 ausgebildet, durch welchen der Anschlußschenkel oder -kontakt 13 eines Anschlußteils oder Kontaktfederteils 51 hindurchragt. Das Kontaktfeder- bzw. Anschlußteil 51 weist neben dem Anschlußschenkel 13 ein Blattfederteil 52 auf, welches durch einen zum Anschlußschenkel 13 führenden Verbindungssteg 56 und durch Federschenkel 53 gebildet ist, die einstückig mit dem Verbindungssteg 56 an dem dem Anschlußschenkel 13 gegenüberliegenden Ende ausgebildet sind und aus der Ebene des Verbindungsstegs 56 etwas herausgebogen sind. Der Anschlußschenkel 13 erstreckt sich im wesentlichen rechtwinklig zu dem Verbindungssteg 56. Durch diese Ausgestaltung kann das Federteil 51 mit seinen Federschenkeln 53 und dem Verbindungssteg 56 zwischen Deckteil 43 des Innengehäuses und Deckteil 4 des Außengehäuses 2 angeordnet werden, wobei der Anschlußschenkel 13 durch einen Durchbruch 25 zur Außenseite des Deckteils 4 ragt. Durch Andrücken des Deckteils 4 gegen den stirnseitigen Rand 46 des Topfteils 3 des Außengehäuses 2 (und damit gegen das Deckteil 43 des Innengehäuses 41) wird das Federteil 51 mit seinen Federschenkeln 53 fest gegen das leitende Deckteil 43 des Innengehäuses 41 gedrückt, so daß ein zuverlässiger elektrischer Kontakt zwischen dem leitenden Deckteil 43 des Innengehäuses 41 und dem Federteil 51 hergestellt wird, so daß letzteres zur Kontaktierung am Kontaktschenkel 22 genutzt werden kann. Der Anpreßdruck für das Deckteil 4 wird einerseits durch am oberen Rand 46 des Topfteils 3 einstückig ausgebildete Laschen 49 gebildet, die unter Anpreßdruck über das Deckteil 4 gebogen sind, wie dies insbesondere der Figur 2 entnehmbar ist. Darüber hinaus ist ebenfalls einstückig mit dem Topfteil 3 ein weiteres Anschlußteil 45 ausgebildet, das aus einem unmittelbar am oberen Rand 28 des Topfteils 3 austretenden Verbindungsteil 47 besteht, welches ebenfalls horizontal über das Deckteil 4 gebogen ist und einen Anpreßdruck auf dieses ausübt. Das Verbindungsteil 47 geht einstückig in den sich senkrecht von der Oberfläche 18 des Deckteils 9 erstreckenden Anschlußschenkel 14 über, der parallel zum Anschlußschenkel 13 ausgerichtet ist. Hierdurch ist der elektrische Kontakt über den Anschlußschenkel 14 und das Verbindungsteil 47 zum leitenden Gehäuseunterteil des Außengehäuses 2 und weiter zum leitenden Topfteil 42 des Innengehäuses 41 gegeben.The lower housing part 3 consists of an electrically conductive material, for example steel. The cover part 4 is made of insulating material, such as a high temperature resistant plastic or the like. The cover part 4 is here also provided with a fastening or holding attachment 6, which has a slot 12 between two legs 11, 11a, which are formed and arranged in mirror image with respect to one another, which enables a certain elasticity of the legs 11, 11a perpendicular to their direction of extension . The legs 11, 11a are provided with lugs or shoulders 16, 17 with which they can reach behind electrical circuit boards of different thicknesses, namely on the one hand with a thickness that corresponds to the distance between the shoulder 16 and the outer cover surface 18 of the cover part 4, and on the other hand a circuit board with less thickness, which corresponds to the distance between the shoulder 17 and the outer cover surface 18 of the cover part 4. Furthermore, by far Approach 6 an opening 25 is formed in the cover part 4, through which the connecting leg or contact 13 of a connecting part or contact spring part 51 projects. The contact spring or connecting part 51 has, in addition to the connecting leg 13, a leaf spring part 52 which is formed by a connecting web 56 leading to the connecting leg 13 and by spring legs 53 which are formed in one piece with the connecting web 56 at the end opposite the connecting leg 13 and from the plane of the connecting web 56 are slightly bent out. The connecting leg 13 extends substantially at right angles to the connecting web 56. This configuration allows the spring part 51 with its spring legs 53 and the connecting web 56 to be arranged between the cover part 43 of the inner housing and the cover part 4 of the outer housing 2, the connecting leg 13 being provided with an opening 25 protrudes to the outside of the cover part 4. By pressing the cover part 4 against the end edge 46 of the pot part 3 of the outer housing 2 (and thus against the cover part 43 of the inner housing 41), the spring part 51 with its spring legs 53 is pressed firmly against the conductive cover part 43 of the inner housing 41, so that a reliable Electrical contact between the conductive cover part 43 of the inner housing 41 and the spring part 51 is made so that the latter can be used for contacting the contact leg 22. The contact pressure for the cover part 4 is formed, on the one hand, by tabs 49 formed in one piece on the upper edge 46 of the pot part 3, which are bent under contact pressure over the cover part 4, as can be seen in particular in FIG. In addition, a further connecting part 45 is also formed in one piece with the pot part 3, which consists of a connecting part 47 emerging directly at the upper edge 28 of the pot part 3, which is also horizontal is bent over the cover part 4 and exerts a contact pressure on this. The connecting part 47 merges in one piece into the connecting leg 14 which extends perpendicularly from the surface 18 of the cover part 9 and is aligned parallel to the connecting leg 13. As a result, the electrical contact via the connecting leg 14 and the connecting part 47 to the conductive lower housing part of the outer housing 2 and further to the conductive pot part 42 of the inner housing 41 is provided.

Der Temperaturschalter in der erläuterten Ausbildung ist wiederum zum Einsatz mit einer elektrischen Leiterplatte vorgesehen. Diese weist im Bereich der Anschlußschenkel 13, 14 und des Verbindungsansatzes 6 Durchbrechungen auf, deren Länge der Breite der Anschlußschenkel 13, 14 bzw. des Verbindungsansatzes 6 entspricht und deren Breite der Stärke der Anschlußschenkel 13, 14 bzw. der Stärke des Verbindungsansatzes 6 in dessen Übergangsbereich zu dem eigentlichen Deckteil 4 entspricht und insbesondere unterhalb dem Abstand der gegenüberliegenden Nasen 17 bzw. 16 der beiden Anschlußschenkel 13, 14 liegt.The temperature switch in the embodiment explained is in turn intended for use with an electrical circuit board. This has 6 openings in the area of the connecting legs 13, 14 and the connecting extension, the length of which corresponds to the width of the connecting legs 13, 14 and the connecting extension 6 and the width of the thickness of the connecting legs 13, 14 and the strength of the connecting extension 6 in the latter Transition area to the actual cover part 4 corresponds and in particular lies below the distance between the opposite lugs 17 and 16 of the two connecting legs 13, 14.

Der Temperaturschalter kann derart vollautomatisch, beispielsweise nach Zuförderung aus einem Rütteltopf mit einer Leiterplatte verbunden werden, indem der Ansatz 6 und die Anschlußschenkel 13, 14 durch die entsprechenden Durchbrüche der Leiterplatte hindurchgesteckt werden, wobei die Schenkelteile 11, lla leicht zusammengedrückt werden, bis jeweils zwei Nasen 16 bzw. 17 nach Durchtreten des Ansatzes 6 die Leiterplatte hintergreifen und der Temperaturschalter an dieser zuverlässig festliegt. Anschließend kann die mit dem Temperaturschalter versehene Leiterplatte wiederum in einfacher Weise als Schütteil gehandhabt werden. Weitere Kontaktierungen können ebenfalls vollautomatisch vorgenommen werden, indem, soweit die Leiterplatte Leiterbahnen aufweist, die im Bereich der die Anschlußschenkel 13, 14 aufnehmenden Durchbrüche enden, dort lediglich elektrische Kontaktverbindungen mittels Lötpunkten zu den Leiterbahnen der Leiterplatte hergestellt werden.The temperature switch can be connected fully automatically, for example after being fed from a vibrating pot, to a printed circuit board by inserting the extension 6 and the connecting legs 13, 14 through the corresponding openings in the printed circuit board, the leg parts 11, 11a being slightly pressed together, in each case until two Lugs 16 and 17 reach behind the circuit board 6 after passing through the approach and the temperature switch is reliably attached to this. Then the circuit board provided with the temperature switch can again be handled in a simple manner as a protective part. Further contacts can also be made can be carried out fully automatically, in so far as the printed circuit board has conductor tracks which end in the area of the openings receiving the connecting legs 13, 14, only electrical contact connections are made there by means of soldering points to the printed conductor tracks of the printed circuit board.

Bei dieser Ausgestaltung können herkömmliche gekapselte Bimetall-Schaltwerke verwendet werden, die noch nicht mit Anschlußkabeln versehen sind, indem sie lediglich in das Außengehäuse 2 eingesetzt, in der beschriebenen Weise kontaktiert werden und das Gehäuse dann in der erläuterten Form durch Aufsetzen des Deckels und Festlegen desselben am Unterteil verschlossen wird. Auch diese Arbeitsschritte können weitgehend bzw. vollständig automatisiert werden.In this embodiment, conventional encapsulated bimetallic switchgear can be used, which are not yet provided with connecting cables, simply by inserting them into the outer housing 2, contacting them in the manner described and then the housing in the form described by putting the cover on and fixing it is closed on the lower part. These steps can also be largely or completely automated.

Die Gehäuseabmessungen vergrößern sich gegenüber dem verkapselten Schaltwerk an sich lediglich um wenige Millimeterbruchteile. Alternativ kann, wie gesagt, das Bimetall-Schaltwerk auch als solches in das Gehäuseunterteil 3 des Gehäuses eingesetzt und dieses dann in geeigneter Weise verschlossen werden, wobei hierzu zusätzlich zu der beschriebenen Ausgestaltung insbesondere ein fluiddichter Verschluß sicherzustellen ist, wie dies bei den gekapselten Bimetall-Schaltwerken an sich der Fall ist.The housing dimensions only increase by a fraction of a millimeter compared to the encapsulated rear derailleur. Alternatively, as mentioned, the bimetallic switching mechanism can also be inserted as such into the lower housing part 3 of the housing and this can then be closed in a suitable manner, in addition to the configuration described, in particular ensuring a fluid-tight closure, as is the case with the encapsulated bimetal. Switchgear itself is the case.

Claims (20)

  1. Printed circuit board with a temperature switch (1), such as in particular a thermostat for an electric motor, in which the temperature switch (1) has a bimetallic switch mechanism in a casing (2), a step (6) provided on the casing (2) and having two spring legs (11,11a) directed away from one another and which can be positively locked in a reception opening (23) of the printed circuit board (20) and two connecting contacts (13, 14) for contacting insulated conductor tracks (21,22) of the printed circuit board (20), the connecting contacts (13,14) being arranged on either side of and adjacent to the step (6).
  2. Printed circuit board according to claim 1, characterized in that the casing (2) of the temperature switch (1) has an electrically conductive casing base (3) and a cover part (4) made from electrically insulating material.
  3. Printed circuit board according to claim 1 or 2, characterized in that the step (6) is provided with an outwardly projecting slot (12) extending in its longitudinal direction and whose lateral boundary areas form the spring portions (11).
  4. Printed circuit board according to claim 1 or 2, characterized in that the step (6) is constructed in one piece on a cover part (4) of the casing (2).
  5. Printed circuit board according to claim 4, characterized in that the step (6), optionally with the cover part (4), is a plastic injection moulding.
  6. Printed circuit board according to one of the preceding claims, characterized in that the casing base (3) is a deep-drawn metal part.
  7. Printed circuit board according to one of the preceding claims, characterized in that a connecting contact (14) is constructed in one piece on the casing base (3).
  8. Printed circuit board according to claim 7, characterized in that one connecting contact (14) is cut from projecting lengths of the deep-drawn casing base (3).
  9. Printed circuit board according to one of the preceding claims, characterized in that a connecting contact (14) is constructed as a retaining clip (49) and extends from the outer edge of the casing (2) over the cover part (4) in the radially inwards direction and is then bent upwards vertically from the cover.
  10. Printed circuit board according to one of the preceding claims, characterized in that the bimetallic switching mechanism is located with its own inner casing (41) in the casing (2).
  11. Printed circuit board according to claim 10, characterized in that the cover part (4) has an opening (25) and that a connecting contact (51) has a connecting leg (13) projecting outwards through the opening (25) in the cover part (4).
  12. Printed circuit board according to one of the claims 10 or 11, characterized in that a connecting contact (13) is constructed in one piece with a spring part (52), which engages resiliently between the cover (4) of the outer casing (2) and the inner casing (41).
  13. Printed circuit board according to claim 12, characterized in that the spring part (52) is formed by shackles (53) facing a connecting web (56) and bent out of its plane.
  14. Printed circuit board according to one of the preceding claims, characterized in that in the vicinity of at least two not electrically interconnected conductor tracks (21,22) is in each case provided an opening (24,26) in a spacing corresponding to the spacing of the connecting contacts (13,14) and that between the openings (24,26) is formed a slot (23), whose width corresponds to that of one undercut web (9) of the step (6).
  15. Printed circuit board according to claim 14, characterized in that the slot is oriented perpendicular to the radius of the printed circuit board (20).
  16. Printed circuit board according to one of the claims 14 and 15, characterized in that from the outside of the printed circuit board (20) extend substantially radially parallel directed slots (31 to 33), in whose central slot (31) engages the step (6) with its web (9), whilst the connecting contacts (13,14) project through the outer slots.
  17. Printed circuit board according to one of the claims 1 to 16, characterized in that the step (6) extends perpendicularly to the surface (18) of the cover part (4) of the outer casing (2).
  18. Printed circuit board according to one of the claims 1 to 17, characterized in that the connecting contacts (13,14) extend parallel to the step (6) for electrical contacting.
  19. Printed circuit board according to one of the claims 11 to 18, characterized in that, besides the connecting leg (13) projecting through the opening (25) of the cover part (4) of the outer casing (2), one connecting contact (51) has a connecting portion (56) extending at right angles thereto and located within the casing (2) and on which are formed in one piece spring legs (52), which are bent slightly out of the plane of the connecting portion (56).
  20. Printed circuit boards according to one of the claims 14 to 19, characterized in that the undercuts (7) of the web (9) are formed by two-step noses (16,17), which are arranged with different spacings relative to the surface (18) of the cover part (4) of the outer casing (2).
EP90110937A 1989-07-25 1990-06-09 Temperature switch with bimetallic switch mechanism Expired - Lifetime EP0410119B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE8908999U DE8908999U1 (en) 1989-07-25 1989-07-25
DE8908999U 1989-07-25
DE8915123U 1989-12-23
DE8915123U DE8915123U1 (en) 1989-12-23 1989-12-23

Publications (3)

Publication Number Publication Date
EP0410119A2 EP0410119A2 (en) 1991-01-30
EP0410119A3 EP0410119A3 (en) 1991-06-12
EP0410119B1 true EP0410119B1 (en) 1995-10-18

Family

ID=25955053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90110937A Expired - Lifetime EP0410119B1 (en) 1989-07-25 1990-06-09 Temperature switch with bimetallic switch mechanism

Country Status (4)

Country Link
US (1) US5046156A (en)
EP (1) EP0410119B1 (en)
JP (1) JP2558972Y2 (en)
DE (1) DE59009787D1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4138817A1 (en) * 1991-11-26 1993-05-27 Ego Elektro Blanc & Fischer TEMPERATURE DETECTION DEVICE
DE19609577C2 (en) * 1996-03-12 1998-02-19 Thermik Geraetebau Gmbh Switch with a temperature-dependent switching mechanism
JP2000217314A (en) * 1999-01-26 2000-08-04 Mitsubishi Electric Corp Starter
ITMI20040189U1 (en) * 2004-04-27 2004-07-27 Elettrotec Srl BIMETALLIC THERMOSTAT WITH EXCHANGE CONTACT WITH PRINTED CIRCUIT INTERPOSED BETWEEN A SENSITIVE THERMOSTATIC ELEMENT AND AN EXCHANGE RELAY
JP2009510001A (en) * 2005-09-29 2009-03-12 アンスティテュ ナシオナル ド ラ サント エ ド ラ ルシュルシェ メディカル（アンセルム） Use of fusion proteins for the prevention or treatment of pathological conditions caused by ischemia
FR2914138B1 (en) * 2007-03-23 2010-09-10 Cotherm Sa DEVICE FOR SECURING AND CONTROLLING AN ELECTRO-DOMESTIC APPARATUS.
FR2951861B1 (en) * 2009-10-27 2011-11-25 Cotherm Sa HYBRID THERMOSTAT FOR ELECTRIC WATER HEATER
CN112787432B (en) * 2019-11-01 2022-10-11 上海海立电器有限公司 Base structure of built-in protector

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1323268A (en) * 1971-04-23 1973-07-11 Jermyn T Jermyn Ind Manufacture of electric components
US4268812A (en) * 1979-06-18 1981-05-19 Satterlee Jesse D Miniature device for sensing overheating of bearings
JPS569774U (en) * 1979-06-29 1981-01-27
US4314223A (en) * 1980-12-11 1982-02-02 Mcgraw-Edison Company Thermal protective device for lighting fixtures
JPS58150811U (en) * 1982-04-02 1983-10-08 中遠電子工業株式会社 small transformer
US4446451A (en) * 1982-12-15 1984-05-01 Texas Instruments Incorporated Thermostat device having improved mounting means
DE3340436A1 (en) * 1983-11-09 1985-05-23 Gerhard 7262 Althengstett Kurz ELECTRIC PRESSURE OR PRESSURE SWITCH
DE8607370U1 (en) * 1986-03-18 1987-04-16 Hofsaess, Peter, 7530 Pforzheim, De

Also Published As

Publication number Publication date
EP0410119A2 (en) 1991-01-30
DE59009787D1 (en) 1995-11-23
JPH0335637U (en) 1991-04-08
US5046156A (en) 1991-09-03
EP0410119A3 (en) 1991-06-12
JP2558972Y2 (en) 1998-01-14

Similar Documents

Publication Publication Date Title
EP1727261B2 (en) Stator for an electric motor
DE4323827C1 (en) Pluggable assembly
DE3940880C2 (en)
DE19712630C1 (en) Terminal socket for screened data transmission cable
EP0959529B1 (en) Electrical connecting unit
DE2426373A1 (en) ELECTRIC CONNECTOR
DE3405533A1 (en) PLUG WITH FUSE
DE3726839C2 (en)
EP0863530A2 (en) Electric circuit board and method of producing the same
DE3928751C2 (en)
DE2210904A1 (en) CONTACT SOCKET
EP0410119B1 (en) Temperature switch with bimetallic switch mechanism
EP0727864A2 (en) Electric motor interconnection board
DE4310369C2 (en) Contact set for a connector
WO2007113030A1 (en) Connection module for connecting a control unit or similar to a drive unit
EP0655169B1 (en) Brush holder for electric motors
DE4110474A1 (en) Electric motor with multi-pole socket - has socket with connection contacts connected to beginnings and ends of motor field winding wires
DE3717806A1 (en) CONNECTING TERMINAL
DE3428595C2 (en)
DE19853927B4 (en) Junction box for shielded cables
DE102017111675A1 (en) Brushless DC motor, stator part and winding method thereof
EP2933804B1 (en) Induction component
EP1780843B1 (en) Socket for telecommunication and data transmission systems
DE3639004A1 (en) CONNECTOR FOR SMALL MOTOR
DE102004001899A1 (en) Trap arrangement

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT LU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT LU

17P Request for examination filed

Effective date: 19910524

17Q First examination report despatched

Effective date: 19930927

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HOFSAESS, HENRIK PETER

Owner name: HOFSAESS, BENJAMIN MICHAEL

Owner name: HOFSAESS, CAROLA RIKA

Owner name: HOFSAESS, MARCEL PETER

Owner name: HOFSAESS, DENISE PETRA

Owner name: HOFSAESS, ULRIKA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HOFSAESS, PETER

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT LU

REF Corresponds to:

Ref document number: 59009787

Country of ref document: DE

Date of ref document: 19951123

ITF It: translation for a ep patent filed

Owner name: DR. ING. A. RACHELI & C.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19951216

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050531

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050610

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20050621

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060609

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060609

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060609

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20080625

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080724

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090609