EP0325717A2 - Switch with metal case particularly for motor-vehicles - Google Patents
Switch with metal case particularly for motor-vehicles Download PDFInfo
- Publication number
- EP0325717A2 EP0325717A2 EP88119261A EP88119261A EP0325717A2 EP 0325717 A2 EP0325717 A2 EP 0325717A2 EP 88119261 A EP88119261 A EP 88119261A EP 88119261 A EP88119261 A EP 88119261A EP 0325717 A2 EP0325717 A2 EP 0325717A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- base
- die
- switch
- circumference
- cast housing
- 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.)
- Withdrawn
Links
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
Definitions
- the invention relates to a switch according to the preamble of claim 1, which is particularly suitable as a reversing switch, gear switch, temperature switch or the like for motor vehicles.
- Such switches with a die-cast housing are used, for example, as reversing switches in motor vehicles.
- the zinc die-casting from which the die-cast housing usually consists, yields at higher temperatures, so that the smooth cylindrical plastic base secured only by the end peripheral lip in the die-cast housing can easily be released from its attachment to the die-cast housing.
- the invention has for its object to improve in a switch according to the preamble of claim 1, the attachment of the plastic base in the die-cast housing in a simple manner and to make it so secure that the base can not change its position in the die-cast housing even at higher temperatures.
- impressions or indentations can be easily pressed in from the outside at the appropriate places after inserting the plastic base into the die-cast housing and pressing the peripheral lip of the cylindrical sleeve against an inclined surface on the base circumference, which gives the base a hold, so that they engage under the circumferential retaining flange protruding radially outwards from the plastic base and in this way ensure that the plastic base with its retaining flange is securely held in the annular recess on the die-cast housing and cannot be pressed outward from the die-cast housing even at higher temperatures.
- the plastic base in the die-cast housing is particularly well secured when four indentations or indentations are distributed over the circumference of the flange at equal intervals of 90 °, the indentations or indentations for a switch in which the die-cast housing has a hexagonal Screw head is formed, are arranged on the die-cast housing advantageously at the transition from the hexagon screw head to the cylindrical sleeve offset therefrom with the conically tapered lip portion.
- the inclined surface on which the circumferential lip is held is advantageously a conical extension on the circumference of the base.
- the switch 1 which is used in particular as a reversing switch for motor vehicles, has a base 2 made of plastic, which is fastened in a die-cast housing 3 with a cylindrical recess 4. At the end of the die-cast housing 3 there is a cylindrical sleeve 5 with a circumferential lip 6 which is pressed conically against the circumference of the base 2 and normally secures the plastic base in the die-cast housing 3 against unintentional loosening.
- a circumferential retaining flange 7 protrudes from the circumference of the base 2, which is held in a corresponding cylindrical recess 4 on the die-cast housing 3, and the base 2 has a conical extension on the base circumference 1a with a externally directed inclined surface 10 on which the peripheral lip 6 rests and finds a hold.
- At least two, preferably three or four indentations or notches 8 are also provided on the die-cast housing 3, which are arranged distributed over the circumference of the holding flange 7 and securely engage under the holding flange on the flange side 7a facing the circumferential lip 6.
- a total of four such impressions or notches 8 are arranged on the die-cast housing 3 over the circumference of the holding flange 7 at equal intervals of 90 ° each, at the transition from the hexagon screw head 9 of the die-cast housing 3 to the cylindrical one offset therefrom Sleeve 5 with the conically tapered end lip section 6.
Landscapes
- Motor Or Generator Frames (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
Die Erfindung betrifft einen Schalter nach dem Oberbegriff des Anspruches 1, der insbesondere als Rückfahrschalter, Getriebeschalter, Temperaturschalter oder dergleichen für Kraftfahrzeuge geeignet ist.The invention relates to a switch according to the preamble of
Derartige Schalter mit einem Druckgußgehäuse werden beispielsweise als Rückfahrschalter bei Kraftfahrzeugen eingesetzt.Such switches with a die-cast housing are used, for example, as reversing switches in motor vehicles.
Der Zink-Druckguß, aus dem das Druckgußgehäuse üblicherweise besteht, gibt jedoch bei höheren Temperaturen nach, so daß der lediglich durch die endseitige Umfangslippe in dem Druckgußgehäuse gesicherte glatte zylindrische Kunststoffsockel sich aus seiner Befestigung an dem Druckgußgehäuse leicht lösen kann.The zinc die-casting, from which the die-cast housing usually consists, yields at higher temperatures, so that the smooth cylindrical plastic base secured only by the end peripheral lip in the die-cast housing can easily be released from its attachment to the die-cast housing.
Der Erfindung liegt die Aufgabe zugrunde, bei einem Schalter nach dem Oberbegriff des Anspruches 1 die Befestigung des Kunststoffsockels in dem Druckgußgehäuse in einfacher Weise zu verbessern und so sicher zu gestalten, daß der Sockel auch bei höheren Temperaturen seine Lage in dem Druckgußgehäuse nicht verändern kann.The invention has for its object to improve in a switch according to the preamble of
Diese Aufgabe wird erfindungsgemäß durch den Kennzeichnungsteil des Anspruches 1 gelöst, während in den Ansprüchen 2 bis 4 besonders vorteilhafte Weiterbildungen der Erfindung gekennzeichnet sind.This object is achieved according to the invention by the characterizing part of
Die Einprägungen oder Einkerbungen können nach dem Einsetzen des Kunststoffsockels in das Druckgußgehäuse und dem Andrücken der Umfangslippe der zylindrischen Hülse gegen eine schräge Fläche am Sockelumfang, die dem Sockel einen Halt gibt, an den dafür geeigneten Stellen in einfacher Weise von außen eingedrückt werden, so daß sie den von dem Kunststoffsockel radial nach außen hervorstehenden umlaufenden Halteflansch untergreifen und auf diese Weise sicherstellen, daß der Kunststoffsockel mit seinem Halteflansch in der ringförmigen Aussparung an dem Druckgußgehäuse sicher festgehalten wird und auch bei höheren Temperaturen nicht aus dem Druckgußgehäuse nach außen herausgedrückt werden kann.The impressions or indentations can be easily pressed in from the outside at the appropriate places after inserting the plastic base into the die-cast housing and pressing the peripheral lip of the cylindrical sleeve against an inclined surface on the base circumference, which gives the base a hold, so that they engage under the circumferential retaining flange protruding radially outwards from the plastic base and in this way ensure that the plastic base with its retaining flange is securely held in the annular recess on the die-cast housing and cannot be pressed outward from the die-cast housing even at higher temperatures.
Eine besonders gute Sicherung des Kunststoffsockels in dem Druckgußgehäuse ergibt sich, wenn vier Einprägungen oder Einkerbungen über den Umfang des Flansches in gleichen Abständen von jeweils 90° verteilt angeordnet sind, wobei die Einprägungen oder Einkerbungen bei einem Schalter, bei dem das Druckgußgehäuse mit einem Sechskant-Schraubenkopf ausgebildet ist, an dem Druckgußgehäuse vorteilhafterweise am Übergang von dem Sechskant-Schraubenkopf zu der davon abgesetzten zylindrischen Hülse mit dem konisch verjüngten Lippenabschnitt angeordnet sind. Die schräge Fläche, an der die Umfangslippe einen Halt findet, ist vorteilhafterweise eine konische Erweiterung am Sockelumfang.The plastic base in the die-cast housing is particularly well secured when four indentations or indentations are distributed over the circumference of the flange at equal intervals of 90 °, the indentations or indentations for a switch in which the die-cast housing has a hexagonal Screw head is formed, are arranged on the die-cast housing advantageously at the transition from the hexagon screw head to the cylindrical sleeve offset therefrom with the conically tapered lip portion. The inclined surface on which the circumferential lip is held is advantageously a conical extension on the circumference of the base.
Ein bevorzugtes Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt. Es zeigen
- Fig. 1 einen Rückfahrschalter für Kraftfahrzeuge in einer Seitenansicht und
- Fig. 2 eine gegenüber Fig. 1 vergrößerte Teildarstellung eines solchen Schalters teilweise aufgeschnitten.
- Fig. 1 shows a reversing switch for motor vehicles in a side view
- Fig. 2 is a partially enlarged view of FIG. 1 of such a switch partially cut away.
Der Schalter 1, der insbesondere als Rückfahrschalter für Kraftfahrzeuge dient, hat einen Sockel 2 aus Kunststoff, der in einem Druckgußgehäuse 3 mit einer zylindrischen Aussparung 4 befestigt ist. Von dem Druckgußgehäuse 3 steht endseitig eine zylindrische Hülse 5 mit einer Umfangslippe 6 hervor, die gegen den Umfang des Sockels 2 konisch angedrückt ist und den Kunststoffsockel normalerweise in dem Druckgußgehäuse 3 gegen unbeabsichtigtes Lösen sichert.The
Zusätzlich zu der am Sockelumfang anliegenden Umfangslippe 6 steht vom Umfang des Sockels 2 ein umlaufender Halteflansch 7 nach außen hervor, der in einer entsprechenden zylindrischen Aussparung 4 an dem Druckgußgehäuse 3 gehalten ist, und der Sockel 2 hat eine konische Erweiterung am Sockelumfang 1a mit einer nach außen gerichteten schrägen Fläche 10, an der die Umfangslippe 6 anliegt und Halt findet.In addition to the
An dem Druckgußgehäuse 3 sind außerdem mindestens zwei, vorzugsweise drei oder vier Einprägungen oder Einkerbungen 8 vorgesehen, die über den Umfang des Halteflansches 7 verteilt angeordnet sind und den Halteflansch an der der Umfangslippe 6 zugewandten Flanschseite 7a sichernd untergreifen.At least two, preferably three or four indentations or
Bei dem gezeigten Ausführungsbeispiel sind insgesamt vier derartige Einprägungen oder Einkerbungen 8 an dem Druckgußgehäuse 3 über den Umfang des Halteflansches 7 in gleichen Abständen von jeweils 90° verteilt angeordnet, und zwar am Übergang von dem Sechskant-Schraubenkopf 9 des Druckgußgehäuses 3 zu der davon abgesetzten zylindrischen Hülse 5 mit dem konisch verjüngten endseitigen Lippenabschnitt 6.In the exemplary embodiment shown, a total of four such impressions or
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8800927U | 1988-01-27 | ||
DE8800927U DE8800927U1 (en) | 1988-01-27 | 1988-01-27 | Switches with metal housing, especially for motor vehicles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0325717A2 true EP0325717A2 (en) | 1989-08-02 |
EP0325717A3 EP0325717A3 (en) | 1989-10-18 |
Family
ID=6819982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88119261A Withdrawn EP0325717A3 (en) | 1988-01-27 | 1988-11-19 | Switch with metal case particularly for motor-vehicles |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0325717A3 (en) |
DE (1) | DE8800927U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007037759A1 (en) | 2007-08-10 | 2009-02-12 | Schaeffler Kg | Device for determining a switching position of a mechanical system |
DE102008037179A1 (en) | 2008-08-09 | 2010-02-11 | Schaeffler Kg | Position detecting device for automatic transmission in motor vehicle, has locking bolt acting on bistable element and transferring movement to movable element of electrical contact, where damping system is provided in movable element |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8904332U1 (en) * | 1989-04-07 | 1989-06-22 | Marquardt GmbH, 7207 Rietheim-Weilheim | Electrical switch |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2275556A (en) * | 1940-08-26 | 1942-03-10 | Gen Motors Corp | Switch |
DE1705120U (en) * | 1952-12-15 | 1955-08-18 | Bosch Gmbh Robert | PRESSURE-ACTUATED SWITCH FOR ELECTRICAL CIRCUITS. |
FR1207546A (en) * | 1958-06-26 | 1960-02-17 | Jaeger Ets Ed | Improvements to pressure sensitive contactors |
US3372372A (en) * | 1965-03-31 | 1968-03-05 | Medallion Instr Inc | Automobile deceleration signal switching circuit |
DE1279805B (en) * | 1964-12-15 | 1968-10-10 | Bosch Gmbh Robert | Pressure medium operated small switch |
DE1690499B2 (en) * | 1967-08-26 | 1973-06-07 | Westfälische Metall Industrie KG, Hueck & Co, 4780 Lippstadt | ELECTRIC SWITCH FOR MOTOR VEHICLES |
DE2600599B2 (en) * | 1976-01-09 | 1978-01-26 | Behr-Thomson Dehnstoffregler Gmbh, 7014 Kornwestheim | TEMPERATURE DEPENDENT SWITCHING DEVICE |
DE3540458A1 (en) * | 1985-11-14 | 1987-05-21 | Behr Thomson Dehnstoffregler | ELECTRICAL SWITCHGEAR |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7730977U1 (en) * | 1977-10-07 | 1982-06-09 | SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen | Unit made up of two housing parts |
DE2902117B1 (en) * | 1979-01-19 | 1980-01-17 | Weber Ag Fab Elektro | Process for producing a tensile connection of an outer housing wall of a device consisting of thermoplastic material with an inner device part and switch, the upper housing part of which is connected to the housing floor by this method |
DE8223377U1 (en) * | 1982-08-19 | 1982-10-14 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Snap-on auxiliary switch |
DE8500845U1 (en) * | 1985-01-15 | 1985-04-18 | Siemens AG, 1000 Berlin und 8000 München | Cover cap for an electrical switch |
-
1988
- 1988-01-27 DE DE8800927U patent/DE8800927U1/en not_active Expired
- 1988-11-19 EP EP88119261A patent/EP0325717A3/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2275556A (en) * | 1940-08-26 | 1942-03-10 | Gen Motors Corp | Switch |
DE1705120U (en) * | 1952-12-15 | 1955-08-18 | Bosch Gmbh Robert | PRESSURE-ACTUATED SWITCH FOR ELECTRICAL CIRCUITS. |
FR1207546A (en) * | 1958-06-26 | 1960-02-17 | Jaeger Ets Ed | Improvements to pressure sensitive contactors |
DE1279805B (en) * | 1964-12-15 | 1968-10-10 | Bosch Gmbh Robert | Pressure medium operated small switch |
US3372372A (en) * | 1965-03-31 | 1968-03-05 | Medallion Instr Inc | Automobile deceleration signal switching circuit |
DE1690499B2 (en) * | 1967-08-26 | 1973-06-07 | Westfälische Metall Industrie KG, Hueck & Co, 4780 Lippstadt | ELECTRIC SWITCH FOR MOTOR VEHICLES |
DE2600599B2 (en) * | 1976-01-09 | 1978-01-26 | Behr-Thomson Dehnstoffregler Gmbh, 7014 Kornwestheim | TEMPERATURE DEPENDENT SWITCHING DEVICE |
DE3540458A1 (en) * | 1985-11-14 | 1987-05-21 | Behr Thomson Dehnstoffregler | ELECTRICAL SWITCHGEAR |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007037759A1 (en) | 2007-08-10 | 2009-02-12 | Schaeffler Kg | Device for determining a switching position of a mechanical system |
DE102008037179A1 (en) | 2008-08-09 | 2010-02-11 | Schaeffler Kg | Position detecting device for automatic transmission in motor vehicle, has locking bolt acting on bistable element and transferring movement to movable element of electrical contact, where damping system is provided in movable element |
Also Published As
Publication number | Publication date |
---|---|
DE8800927U1 (en) | 1988-12-22 |
EP0325717A3 (en) | 1989-10-18 |
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Legal Events
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17P | Request for examination filed |
Effective date: 19900409 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19920602 |