EP0321423B1 - Ein Zündschalter für Kraftfahrzeuge - Google Patents
Ein Zündschalter für Kraftfahrzeuge Download PDFInfo
- Publication number
- EP0321423B1 EP0321423B1 EP88830533A EP88830533A EP0321423B1 EP 0321423 B1 EP0321423 B1 EP 0321423B1 EP 88830533 A EP88830533 A EP 88830533A EP 88830533 A EP88830533 A EP 88830533A EP 0321423 B1 EP0321423 B1 EP 0321423B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical contacts
- ignition switch
- intermediate body
- contact element
- casing
- 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
Links
- 230000015572 biosynthetic process Effects 0.000 claims description 22
- 238000005755 formation reaction Methods 0.000 claims description 22
- 238000003466 welding Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
- H01H27/06—Key inserted and then turned to effect operation of the switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
- H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
- H01H19/563—Angularly-movable actuating part carrying contacts, e.g. drum switch with an initial separation movement perpendicular to the switching movement
Definitions
- the present invention relates to ignition switches for motor vehicles and particularly concerns switches comprising:
- Ignition switches of the aforementioned type are known in the art as witness, e.g. DE-A-31 35 866.
- a somewhat similar arrangement is shown, e.g. in US-A-1 622 706, wherein an intermediate body is provided which is interposed between the set of electrical contacts and the contact element, the projecting formations being provided on the intermediate body.
- Arrangements are also known wherein, generally, the further rotatable contact element is supported (usually with the interposition of resilient elements such as springs) by a disc which is rotatably mounted within the casing and can be rotated by the ignition key of the motor vehicle through a transmission element.
- the projecting formations (tripping formations) - the dimensions and shape of which determine the spatial sequence of connection of the various electrical contacts of the switch - are formed as appendages of the flat wall on which the electrical contacts are mounted.
- This conventional solution makes the production of the casing (which in fact involves the production of a moulded component of fairly elaborate shape with problems of wastage of material, etc.) and the assembly of the ignition switch as a whole generally complex.
- the object of the present invention is to produce a switch of the type specified above, in which the above problems are completely eliminated, providing further advantages as regards the ease and flexibility of production of the switch.
- the electrical contacts of the set are preferably mounted in a generally sandwich-like arrangement between the at least one flat wall of the casing and the intermediate body.
- the latter is preferably fixed to the generally flat wall (by gluing or ultrasonic welding) and is provided with openings for the contact between the rotatable contact element and the electrical contacts of the set. If it is fixed by ultrasonic welding, it is envisaged that the surface of the intermediate body which is intended to face towards the flat wall of the casing is provided with projecting formations which are intended to be fused during the ultrasonic welding so as to produce a more intimate connection between the intermediate body itself and the flat wall of the casing.
- an ignition switch for motor vehicles for example motor cars is generally indicated 1.
- the switch 1 comprises:
- the body 6 is rotated by the ignition key of the vehicle through a transmission element (not illustrated) which is intended to engage a shaped central cavity 13 of the pin 8 of the disc element 6 by form coupling.
- Resilient elements are interposed between the disc element 6 and the rotatable contact 10, and have the function of thrusting the rotatable contact 10 towards the electrical contacts 4 situated on the flat end wall 5 of the half-shell 2.
- An intermediate body of electrically insulating material, generally indicated 15, is mounted within the casing 2, 3 between the contacts 4 and the rotatable contact 10.
- the body 15 whose structure and characteristics are shown in greater detail in Figures 2 to 4, is fitted to the wall 5 of the half-shell 2 (by gluing or by ultrasonic welding) so as to achieve a sandwich-like mounting of the contacts 4.
- the intermediate body 15 is provided with a set of windows or apertures (openings) 16, 17 whose function is to enable the contact appendages 10a with which the plate 10 is provided to come into sliding contact with the contacts 4 which are sandwiched between the wall 5 and the body 15.
- the contacts 4 extend along generally arcuate paths centred on the pin 7: the apertures or openings 16, 17 are of exactly the same shape.
- the aperture or window 17 which is situated centrally of the element 15 usually comprises a central zone for passage of the pin 7, as well as an outer arcuate portion.
- First projecting formations of the body 15, indicated 18, project from the face of the body which is intended to face towards the rotatable contact 10.
- the formations 18 also extend along arcuate paths so as to border the windows 16 and 17 for respective portions of their angular development.
- the projecting formations 18 are intended to cooperate with the rotatable element 10 to cause it to move away from the contacts 4 against the thrust exerted by the springs 14.
- the dimensions and shape of the projecting formations 18 univocally determine the angular positions at which the rotatable contact 10 is moved away from the contacts 4 to interrupt the electrical contact therewith.
- the contact 10 is usually mounted on the disc element 6 wth the interposition of at least three springs 14 so that, as well as a general movement towards and away from the contacts 4, the contact can also be inclined to the axis of rotation defined by the pin 7, whereby only some of its contact appendages 10a (and not all of these appendages) may be in sliding contact with the contacts 4.
- the use of the further projecting formations 19 is envisaged when the intermediate body 15 is intended to be fitted to the end wall 5 of the body 2 by means of ultrasonic welding.
- the projecting formations 19 are in fact intended to be fused under the action of the field of high-frequency vibrations generated by the sonotrode of the ultrasonic welding device.
- the latter is moved along the opposite face of the body 15 in correspondence with the formations 19.
- the material of these formations (which, like the formations 18, constitute integral appendages of the body 15 produced by the moulding of an insulating plastics material) is intended to constitute the weld material. It is thus possible to achieve a firm connection, whilst avoiding any dribbling towards the windows 16, 17 in which the contact appendages 10a must move.
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Manufacture Of Switches (AREA)
Claims (6)
- Zündschalter für Kraftfahrzeuge, mit:
einem Schutzgehäuse (2, 3) mit mindestens einer allgemein flachen Wandung (5),
einem Satz elektrischer Kontakte (4), die an der flachen Wandung (5) angeordnet sind,
einem scheibenförmigen Element (6), das in dem Gehäuse (2, 3) um eine entsprechende Achse (7) drehbar gelagert ist,
mindestens einem weiteren elektrischen Kontaktelement (10), das in Rotation versetzt ist durch die dem scheibenförmigen Element (6) übertragene Rotation zum Zusammenwirken mit den elektrischen Kontakten (4) des Satzes,
einem Satz vorspringender Elemente (18), die die elektrischen Kontakte (4) des Satzes umgeben und mit dem mindestens einen weiteren Kontaktelement (10) selektiv zusammenwirken, um dieses aufgrund seiner Drehung in Richtung auf die elektrischen Kontakte (4) des Satzes zu und von diesen wieder weg zu bewegen, worin:
ein Isolations-Zwischenkörper (15) vorgesehen ist, der zwischen dem Satz elektrischer Kontakte (4) und dem weiteren Kontaktelement (10) angeordnet ist, wobei die vorspringenden Elemente (18) auf dem Zwischenkörper (15) vorhanden sind, und
elastische Elemente in Form von mindestens drei Federn (14) zwischen dem scheibenförmigen Element (6) und dem mindestens einen weiteren elektrischen Kontaktelement (10) angeordnet sind, um dieses mindestens eine weitere elektrische Kontaktelement (10) in Richtung auf die elektrischen Kontakte (4) zu drücken, während sie es ermöglichen, daß dieses weitere elektrische Kontaktelement (10) zu der entsprechenden Achse (7) hin geneigt ist. - Zündschalter nach Anspruch 1, dadurch gekennzeichnet, daß die elektrischen Kontakte (4) in dem Satz in einer allgemein sandwichartigen Anordnung zwischen der mindestens einen flachen Wand (5) und dem Zwischenkörper (15) angeordnet sind.
- Zündschalter nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß der Zwischenkörper (15) an der flachen Wand befestigt ist und Öffnungen (16, 17) hat zum Zusammenwirken des weiteren Kontaktelements (10) mit den elektrischen Kontakten (4) des Satzes.
- Zündschalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Zwischenkörper (15) durch Aufkleben an dem Schutzgehäuse (2) befestigt ist.
- Zündschalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Zwischenkörper (15) durch Ultraschallschweißen an dem Schutzgehäuse (2) befestigt ist.
- Zündschalter nach Anspruch 5, dadurch gekennzeichnet, daß der Zwischenkörper (15) mit weiteren vorspringenden Elementen (19) versehen ist, welche dem Gehäuse (2) zugewandt sind und das Schweißmaterial bilden für die Befestigung des Zwischenkörpers (15) durch Ultraschallschweißen an dem Schutzgehäuse (2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8768085A IT1211608B (it) | 1987-12-17 | 1987-12-17 | Commutatore di accensione per autoveicoli |
IT6808587 | 1987-12-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0321423A1 EP0321423A1 (de) | 1989-06-21 |
EP0321423B1 true EP0321423B1 (de) | 1993-12-01 |
Family
ID=11307730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88830533A Expired - Lifetime EP0321423B1 (de) | 1987-12-17 | 1988-12-13 | Ein Zündschalter für Kraftfahrzeuge |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0321423B1 (de) |
BR (1) | BR8806760A (de) |
DE (1) | DE3886019T2 (de) |
ES (1) | ES2046328T3 (de) |
IT (1) | IT1211608B (de) |
PL (1) | PL160190B1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2759199B1 (fr) * | 1997-01-31 | 1999-03-26 | Itt Composants Instr | Dispositif modulaire de commutation electrique |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1622706A (en) * | 1926-01-27 | 1927-03-29 | Harry A Douglas | Combined lighting and ignition switch |
CH317267A (it) * | 1952-05-07 | 1956-11-15 | Magneti Marelli Spa | Quadretto di commutazione per autoveicoli |
DE3135866A1 (de) * | 1981-09-10 | 1983-03-24 | Franz Kirsten Elektrotechnische Spezialfabrik, 6530 Bingen | Drehschalter |
DE3150217A1 (de) * | 1981-12-18 | 1983-06-30 | Hartmann & Braun Ag, 6000 Frankfurt | Drehschalter mit mehreren kontaktsaetzen, rastanordnung und rotorantrieb |
DE3315994A1 (de) * | 1982-05-27 | 1984-11-08 | Günter 5277 Marienheide Merten | Mehrfachschalter, insbesondere zuend-anlasserschalter fuer kraftfahrzeuge |
-
1987
- 1987-12-17 IT IT8768085A patent/IT1211608B/it active
-
1988
- 1988-12-13 DE DE3886019T patent/DE3886019T2/de not_active Expired - Fee Related
- 1988-12-13 ES ES198888830533T patent/ES2046328T3/es not_active Expired - Lifetime
- 1988-12-13 EP EP88830533A patent/EP0321423B1/de not_active Expired - Lifetime
- 1988-12-16 BR BR888806760A patent/BR8806760A/pt not_active IP Right Cessation
- 1988-12-17 PL PL1988276496A patent/PL160190B1/pl unknown
Also Published As
Publication number | Publication date |
---|---|
IT1211608B (it) | 1989-11-03 |
PL160190B1 (pl) | 1993-02-26 |
BR8806760A (pt) | 1989-08-29 |
DE3886019D1 (de) | 1994-01-13 |
DE3886019T2 (de) | 1994-06-30 |
EP0321423A1 (de) | 1989-06-21 |
ES2046328T3 (es) | 1994-02-01 |
PL276496A1 (en) | 1989-08-07 |
IT8768085A0 (it) | 1987-12-17 |
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