WO2004075223A1 - Schalter mit selbstreinigenden kontakten - Google Patents
Schalter mit selbstreinigenden kontakten Download PDFInfo
- Publication number
- WO2004075223A1 WO2004075223A1 PCT/DE2004/000170 DE2004000170W WO2004075223A1 WO 2004075223 A1 WO2004075223 A1 WO 2004075223A1 DE 2004000170 W DE2004000170 W DE 2004000170W WO 2004075223 A1 WO2004075223 A1 WO 2004075223A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- contact
- switch according
- switch
- actuating
- carrier element
- Prior art date
Links
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
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/78—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites
- H01H13/80—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites characterised by the manner of cooperation of the contacts, e.g. with both contacts movable or with bounceless contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/18—Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2201/00—Contacts
- H01H2201/008—Both contacts movable
Definitions
- the invention relates to a switch with self-cleaning contacts according to the preamble of claim 1.
- a steering wheel for motor vehicles with a device for actuating an electrical functional group of a motor vehicle in which one contact is mounted on an assembly of the steering wheel skeleton and the other opposite contact on an assembly movable with respect to the steering wheel skeleton.
- the contact arranged on the movable assembly is spring-loaded and can therefore slide along the other contact when the corset is pressed. As a result of the resulting friction, the contacts are cleaned of dirt or an oxide layer is removed.
- a disadvantage of this arrangement is that the maximum path of self-cleaning of the movable contact with respect to the mating contact corresponds to the displacement path of the actuating element in the direction of the mating contact after touching both contacts, provided that the resilient contact carrier is at an angle of 45 ° with respect to the direction of movement the actuating element is arranged. If, after touching the two contacts, the actuating device is moved further by one millimeter, the contacts also slide against one another by one millimeter. By changing the above-mentioned angle, the sliding path of the movable contact can be increased within certain limits, but it still remains small. If the displacement path of the actuating element were increased, the further disadvantage would be best hen that when the switch is actuated by depressing the airbag cap, the gaps between it and the steering wheel would have to be increased.
- the invention is therefore based on the object of improving the relationship between the displacement of the actuating element for the switch and the path of self-cleaning of the contacts, i.e. to achieve an increase in the path of self-cleaning with the same displacement compared to a known switching device.
- a switch with self-cleaning contacts in particular for actuating horns on steering wheels of motor vehicles, with at least two opposing contacts, of which a movable contact can be brought into contact with a mating contact by means of an actuating element, the contacts sliding against one another during their contacting during the contacting , by the contact assigned to the actuating element is fastened to a carrier element which is elastically deformable and is fixed at one end while the opposite end is freely movable, the carrier element according to the invention runs obliquely with respect to the actuating direction and from its fastening side in the direction of the actuating element then runs towards its free end obliquely with respect to the direction of actuation away from the actuating element.
- the carrier element thus has two inclined sections which run, at least in sections, like two sides of a triangle, the point of intersection of which lies in the region of the actuating element. It is expedient that the oblique sections run at the same angle with respect to the actuation direction. If the actuator, e.g. B. by pressing down the airbag cap, is pressed onto the elastic carrier element clamped on one side, its contact with the mating contact is electrically short-circuited. The bevels of the carrier element located to the left and right of the actuating element increase their angle to one another after the contact closure when the actuating element is further depressed.
- the contact of the carrier element on the mating contact is shifted with a predetermined contact force and the surface of the contacts is cleaned of dirt.
- the one side of the carrier element is fixed, preferably fixedly connected to one side of a switch housing, and only the other side can dodge, move with a path of the carrier element in the direction of movement of the actuating element from z. B. one millimeter the contacts against each other by 2 millimeters.
- the way of self-cleaning has thus doubled compared to the arrangement of the prior art, or for a certain displacement of the contacts against one another, the actuating element has to be pressed in only half as far as the arrangement of the prior art.
- the carrier element prefferably accommodated in a switch housing, which is preferably closed with a cover, in order to prevent the ingress of larger dirt particles between the contact and counter contact.
- the carrier element is designed like a dome towards the actuating element and protrudes from the switch housing, the inclined sections of the carrier gerimplantations extend between the dome-like section and the contact side on the one hand and the fastening side of the carrier element on the other.
- the actuating element is designed such that, after the dome-like section has been pressed down, it bears against the housing wall until it is flush with the housing wall. This ensures that the pressure on the carrier element and thus on the contacts is limited to a predetermined value.
- the protrusion of the dome-like section of the carrier element relative to the housing is designed so large that the contacts are cleaned, but the elastic carrier element is not overloaded.
- the support element has a curvature towards the actuating element, which runs inside the switch housing, and an actuating bolt is arranged in the switch housing between the support element and the actuating element, said actuating bolt having a stop abutting the inner wall of the housing in the idle state.
- the actuating bolt is pressed against the inner wall of the housing by the spring force of the carrier element.
- the mating contact is also arranged on a carrier element in the switch housing.
- the carrier elements are preferably designed as electrically conductive contact plates, on which connector lugs are attached, which can be connected to electrical lines or plates.
- the carrier elements are fastened in particular by injecting or snapping into the switch housing made of insulating material and are preferably fastened to one side of the switch housing.
- the support element which is assigned to the actuating element, can be assigned a stop in the switch housing in order to achieve a defined rest position.
- the carrier element is prestressed against this stop, as a result of which the distance between the contact and the mating contact can be better maintained.
- the stop is expediently arranged in the contact area.
- the contact and the mating contact are preferably arranged at the free end of the associated carrier element.
- the support element for the mating contact is permanently connected to the switch housing over its entire length.
- the carrier element for the mating contact is made of resilient material and is freely movable in the area of the mating contact. As a result, the contact force between the contact and the counter contact can be better coordinated.
- one contact has a curved surface shape and the opposite contact has a flat, corrugated surface shape.
- the mating contact preferably has the curved surface shape.
- the actuating element should be designed such that the contact force between the two carrier elements does not exceed the value of 2 + IN.
- the carrier element which is assigned to the actuating element, preferably has a round or angular cross section.
- the switch can be arranged in a motor vehicle in the steering wheel or in the airbag module. It can expediently also be arranged on a scissor device installed in the steering wheel or in the airbag cap, one scissor element carrying the switch and the other scissor element having an actuating element for the switch.
- the scissor device ensures that the required actuation force is always the same, regardless of whether, for example, the airbag cap is pressed down in the middle or at the edge when the switch is actuated.
- the switch according to the invention can be used in particular to trigger the horn in the motor vehicle.
- Fig.l shows a section through a first embodiment of a switch according to the invention
- FIG. 2 shows a plan view of the switch according to FIG. 1;
- FIG. 3 shows a detail from FIG. 1;
- FIG. 5 shows a section through a second embodiment of the switch according to the invention.
- FIG. 6 shows a plan view of the switch according to FIG. 5
- FIG. 7 shows a switch according to the invention arranged on a scissor device
- an elastic, electrically conductive carrier element 2 in the form of a contact plate with a contact 3 is arranged in a switch housing 1 made of insulating material.
- the carrier element 2 has a dome-like section 4 which projects out of the switch housing 1 through a slot-shaped opening 5. Between the dome-like section 4 and the contact side 6 on the one hand and the fastening side 7 of the carrier element 2 on the other hand, the carrier element extends obliquely with respect to the actuation direction B.
- the oblique portions 2a, b run at the same angle w with respect to the actuation direction.
- the carrier element 2 is provided with a plug tab 8 for connection to an electrical line.
- the carrier element 2 bears against a stop 9 in the region of the contact 3 under prestress, so that a constant contact distance to an opposite mating contact 10 is ensured in the rest position.
- This is fastened to an electrically conductive carrier element 11 which has a connector lug 12.
- the carrier element 11 lies on the bottom of the switch housing 1, so that it cannot deform as a result of the contact 3 being depressed.
- the switch shown can, as shown in FIG. 4, be installed in a steering wheel 13 and actuated by an actuating element 14.
- the actuating element 14 is designed so that it cannot penetrate into the opening 5 of the switch housing 1 when depressed.
- the dome-like section 4 of the carrier element 2 can thus only be pressed down until its upper end 4a is flush with the outer surface la of the switch housing 1.
- the carrier element 2 deforms, as shown in broken lines in FIG. 3.
- the angle w between the slope and the direction of actuation increases after the contact to the angle w 'and with free mobility the ends of the slope would shift horizontally on both sides by the amount d. Since the carrier element 2 is clamped on the left side and only the right side with the contact attached to it
- both contacts lie on top of each other, the surfaces of both contacts are cleaned of dirt during this movement.
- the cleaning is supported in that the contact 3 has a flat corrugated surface, while the counter contact 10 has a convex surface.
- an electrically conductive, elastic carrier element 15 has a curvature toward the actuating element 14, which curvature extends within a switch housing 16.
- An actuating bolt 17 is arranged in the switch housing 16 between the carrier element 15 and the actuating element 14 (FIG. 4), which is not shown in this figure and which has a stop 19 resting against the inner wall 16a of the housing in the idle state.
- the opening in the switch housing 16 for the actuating bolt 17 is only insignificantly larger than its diameter, so that good guidance but also ease of movement is ensured.
- the carrier element 15 lies in the area of the contact 3 against a stop 20 under prestress.
- the end of the electrically conductive, elastic carrier element 21 with the mating contact 10 lies freely in the switch housing, so that it can deform elastically when the contact 3 is pressed on. Since this support element 15 also has bevels on both sides of the actuating bolt 17 because of the curvature and is clamped on one side in the switch housing 16, the same effect occurs when the switch is actuated as in the first embodiment.
- FIGS. 7 and 8 show a possibility of installing a switch according to the invention in an airbag module that differs from FIG. 1.
- the switch housing 1 is attached to one end of a scissor element 23 of a scissor device 22, while an actuating element 25 is arranged at one end of an associated scissor element 24.
- the respective other ends of the scissor elements are connected by a compression spring 26.
- the scissors device 22 is arranged in an airbag module, as shown in FIG. 8.
- the scissor device has the advantage that the actuating force for the switch is always the same, regardless of whether the switch is actuated by pressure on the airbag cover in the middle or on the edge.
Landscapes
- Push-Button Switches (AREA)
- Contacts (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04706127A EP1595270B9 (de) | 2003-02-20 | 2004-01-29 | Druckschalter mit selbstreinigenden kontakten |
DE502004000832T DE502004000832D1 (de) | 2003-02-20 | 2004-01-29 | Druckschalter mit selbstreinigenden kontakten |
BRPI0407609-5A BRPI0407609A (pt) | 2003-02-20 | 2004-01-29 | chave com contatos autolimpantes |
JP2006501485A JP4294051B2 (ja) | 2003-02-20 | 2004-01-29 | 自浄接点を有するスイッチ |
US10/546,105 US7307229B2 (en) | 2003-02-20 | 2004-01-29 | Switch provided with self-cleaning contacts |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20303116U DE20303116U1 (de) | 2003-02-20 | 2003-02-20 | Schalter mit selbstreinigenden Kontakten |
DE20303116.4 | 2003-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004075223A1 true WO2004075223A1 (de) | 2004-09-02 |
Family
ID=27618956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/000170 WO2004075223A1 (de) | 2003-02-20 | 2004-01-29 | Schalter mit selbstreinigenden kontakten |
Country Status (8)
Country | Link |
---|---|
US (1) | US7307229B2 (de) |
EP (1) | EP1595270B9 (de) |
JP (1) | JP4294051B2 (de) |
CN (1) | CN100437853C (de) |
BR (1) | BRPI0407609A (de) |
DE (2) | DE20303116U1 (de) |
ES (1) | ES2267038T3 (de) |
WO (1) | WO2004075223A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006092921A (ja) * | 2004-09-24 | 2006-04-06 | Takata Corp | ホーンスイッチ装置、エアバッグ装置、ステアリング装置 |
US7629544B1 (en) * | 2008-06-03 | 2009-12-08 | Tech Patent Licensing, Llc | Asymmetric spring coil shunt for light string socket |
US7633024B1 (en) | 2008-06-03 | 2009-12-15 | Tech Patent Licensing, Llc | Push rod shunt for light string sockets |
US7626321B1 (en) | 2008-06-03 | 2009-12-01 | Tech Patent Licensing, Llc | Spring coil shunt for light string socket |
US8573985B2 (en) * | 2011-03-07 | 2013-11-05 | Satyajit Patwardhan | Contactors for electric vehicle charging system |
WO2014069907A1 (ko) * | 2012-11-05 | 2014-05-08 | 주식회사 대동 | 차량용 고부하 스위치 |
DE102014005433A1 (de) * | 2014-02-15 | 2015-08-20 | Johnson Electric Germany GmbH & Co. KG | Mikroschalter mit einem aus Schalterbasis und Schalterdeckel ausgebildeten Gehäuse |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB903169A (en) * | 1959-01-14 | 1962-08-15 | Landis & Gyr Ag | Improvements in or relating to electric switch contacts |
US3201555A (en) * | 1962-04-14 | 1965-08-17 | Telemecanique Electrique | Electric contact device having means for limiting contact pressure |
EP0689215A1 (de) * | 1994-06-23 | 1995-12-27 | METHODE ELECTRONICS, Inc. | Selbstreinigender Schalter mit drehbar gelagertem Kontakt |
US6143994A (en) * | 1999-02-12 | 2000-11-07 | Valeo Securite Habitacle | Electrical switch for an automobile anti-theft device |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE32890C (de) | 1900-01-01 | C. H. SCHNEIDER in Freiburg i. B | Verfahren zur Gewinnung von Rohsalmiakgeist in Verbindung mit der Gewinnung von Phosphatpoudrette aus Fäkalien | |
DE195501C (de) | ||||
DE667850C (de) | 1935-11-01 | 1938-11-21 | Aeg | Kontaktanordnung fuer elektrische Installationsschalter, insbesondere Selbstschalter |
US3002074A (en) | 1959-06-08 | 1961-09-26 | Daystrom Inc | Relay contact system |
JPH0350593Y2 (de) | 1986-02-14 | 1991-10-29 | ||
DE3715765A1 (de) | 1987-05-12 | 1988-12-01 | Schoeller & Co Elektrotech | Drucktastenschalter |
US4839475A (en) * | 1988-04-29 | 1989-06-13 | Limitorque Corporation | Modular switch assembly having wiping contacts |
JPH0456680A (ja) * | 1990-06-23 | 1992-02-24 | Toyoda Gosei Co Ltd | ホーンスイッチ |
DE4117120A1 (de) | 1991-05-25 | 1992-11-26 | Abb Patent Gmbh | Kontaktanordnung fuer einen elektrischen schalter |
JP3123166B2 (ja) * | 1991-12-17 | 2001-01-09 | タカタ株式会社 | エアバッグ装置のモジュールカバー |
US5303952A (en) * | 1992-12-23 | 1994-04-19 | United Technologies Automotive, Inc. | Electric signalling in a supplemental vehicle restraint system |
JPH11297147A (ja) | 1998-04-09 | 1999-10-29 | Yazaki Corp | 可動接触板の接点構造 |
DE20004953U1 (de) | 2000-03-10 | 2000-08-10 | Petri Ag | Lenkrad für Kraftfahrzeuge mit einer Schalteinrichtung zum Betätigen einer elektrischen Funktionsgruppe eines Kraftfahrzeugs |
DE20219729U1 (de) * | 2002-12-18 | 2003-03-06 | Takata Petri Ag | Vorrichtung zur Betätigung von elektrischen Funktionsgruppen, insbesondere von Hupen an Lenkrädern von Kraftfahrzeugen |
-
2003
- 2003-02-20 DE DE20303116U patent/DE20303116U1/de not_active Expired - Lifetime
-
2004
- 2004-01-29 BR BRPI0407609-5A patent/BRPI0407609A/pt not_active IP Right Cessation
- 2004-01-29 EP EP04706127A patent/EP1595270B9/de not_active Expired - Fee Related
- 2004-01-29 DE DE502004000832T patent/DE502004000832D1/de not_active Expired - Lifetime
- 2004-01-29 WO PCT/DE2004/000170 patent/WO2004075223A1/de active IP Right Grant
- 2004-01-29 ES ES04706127T patent/ES2267038T3/es not_active Expired - Lifetime
- 2004-01-29 JP JP2006501485A patent/JP4294051B2/ja not_active Expired - Fee Related
- 2004-01-29 US US10/546,105 patent/US7307229B2/en not_active Expired - Fee Related
- 2004-01-29 CN CNB200480003396XA patent/CN100437853C/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB903169A (en) * | 1959-01-14 | 1962-08-15 | Landis & Gyr Ag | Improvements in or relating to electric switch contacts |
US3201555A (en) * | 1962-04-14 | 1965-08-17 | Telemecanique Electrique | Electric contact device having means for limiting contact pressure |
EP0689215A1 (de) * | 1994-06-23 | 1995-12-27 | METHODE ELECTRONICS, Inc. | Selbstreinigender Schalter mit drehbar gelagertem Kontakt |
US6143994A (en) * | 1999-02-12 | 2000-11-07 | Valeo Securite Habitacle | Electrical switch for an automobile anti-theft device |
Also Published As
Publication number | Publication date |
---|---|
EP1595270B9 (de) | 2006-12-06 |
JP4294051B2 (ja) | 2009-07-08 |
EP1595270A1 (de) | 2005-11-16 |
BRPI0407609A (pt) | 2006-02-14 |
CN100437853C (zh) | 2008-11-26 |
US20060207866A1 (en) | 2006-09-21 |
DE502004000832D1 (de) | 2006-08-03 |
CN1745444A (zh) | 2006-03-08 |
JP2006518537A (ja) | 2006-08-10 |
ES2267038T3 (es) | 2007-03-01 |
EP1595270B1 (de) | 2006-06-21 |
US7307229B2 (en) | 2007-12-11 |
DE20303116U1 (de) | 2003-07-17 |
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