DE102008049847B4 - Device for activating a horn for a motor vehicle - Google Patents
Device for activating a horn for a motor vehicle Download PDFInfo
- Publication number
- DE102008049847B4 DE102008049847B4 DE200810049847 DE102008049847A DE102008049847B4 DE 102008049847 B4 DE102008049847 B4 DE 102008049847B4 DE 200810049847 DE200810049847 DE 200810049847 DE 102008049847 A DE102008049847 A DE 102008049847A DE 102008049847 B4 DE102008049847 B4 DE 102008049847B4
- Authority
- DE
- Germany
- Prior art keywords
- horn
- cover
- processing means
- signal processing
- activating
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
- B60Q5/001—Switches therefor
- B60Q5/003—Switches therefor mounted on the steering wheel
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
- Air Bags (AREA)
- Push-Button Switches (AREA)
Abstract
Vorrichtung zum Aktivieren eines Signalhorns für ein Motorfahrzeug, umfassend eine mit einem Lenkrad (11) gekoppelte, von dem Insassen zum Aktivieren des Signalhorns (20) zu drückende Abdeckung (13), ein mit der Abdeckung (13) gekoppeltes druckempfindliches Mittel (15) zum Erzeugen eines elektrischen Signals aufgrund von auf die Abdeckung (13) angewendetem Druck, und ein Signalverarbeitungsmittel (18), das zum Aktivieren des Signalhorns (20) aufgrund Empfangens des elektrischen Signals von dem druckempfindlichen Mittel (15) eingerichtet ist, wobei das druckempfindliche Mittel (15) mindestens ein piezoelektrisches Element (15) umfasst, und das Signalverarbeitungsmittel (18) zum Auswerten von zeitlichen Änderungen des elektrischen Signals und zum Aktivieren des Signalhorns (20) in Abhängigkeit von dem Ergebnis der Auswertung eingerichtet ist, dadurch gekennzeichnet, dass das Signalverarbeitungsmittel (18) zum Aktivieren des Signalhorns (20) eingerichtet ist, wenn eine Signaländerung ΔU, die einen vorbestimmten Betrag ΔU0 innerhalb einer vorbestimmten Zeitdauer Δt0 überschreitet, festgestellt wird.A device for activating a horn for a motor vehicle, comprising a cover (13) coupled to a steering wheel (11) to be pressed by the occupant for activating the horn (20), a pressure sensitive means (15) for coupling to the cover (13) Generating an electrical signal due to pressure applied to the cover (13), and signal processing means (18) adapted to activate the horn (20) by receiving the electrical signal from the pressure sensitive means (15), the pressure sensitive means (18) 15) comprises at least one piezoelectric element (15), and the signal processing means (18) is arranged to evaluate changes in the timing of the electrical signal and to activate the horn (20) depending on the result of the evaluation, characterized in that the signal processing means (15) 18) is arranged to activate the horn (20) when a signal change ΔU which exceeds a predetermined amount ΔU0 within a predetermined period of time Δt0.
Description
Die Erfindung bezieht sich auf eine Vorrichtung zur Aktivierung eines Signalhorns für ein Motorfahrzeug nach dem Oberbegriff von Anspruch 1.The The invention relates to a device for activating a Bugle for A motor vehicle according to the preamble of claim 1.
Die Aufgabe der Erfindung ist es, eine zuverlässige und kostengünstige Vorrichtung zur Aktivierung eines Signalhorns bereitzustellen, die unempfindlich gegen variablen internen Druck aufgrund von Alterung und thermischen Veränderungen ist.The The object of the invention is to provide a reliable and cost-effective device to provide activation of a bugle that is insensitive against variable internal pressure due to aging and thermal changes is.
Die Erfindung löst diese Aufgabe mit den Mitteln von Anspruch 1, insbesondere indem das Signalverarbeitungsmittel zum Aktivieren des Signalhorns eingerichtet ist, wenn eine Signaländerung ΔU, die einen vorbestimmten Betrag ΔU0 innerhalb einer vorbestimmten Zeitdauer Δt0 überschreitet, festgestellt wird. Die Auswertung von Änderungen des elektrischen Signals über der Zeit, anstelle von absoluten Werten, erlaubt die Unterscheidung von schnellen Druckänderungen, die durch Signalhorn aktivierung verursacht werden, von langsamem Druckänderungen, die durch Alterung und thermische Änderungen verursacht werden. Die Feststellung einer schnellen Druckänderung ist im Wesentlichen unabhängig von dem absoluten Wert des internen Drucks zum Zeitpunkt der Signalhornaktivierung. Gemäß der Er findung werden einen oder mehrere piezoelektrische Elemente als Druck sensitive Mittel verwendet, weil die von dem piezoelektrischen Element bereitgestellte Spannung proportional zu dem Betrag des angewendeten Drucks ist. Daher entsprechen Spannungsänderungen in der Signalspannung eines piezoelektrischen Elements, die einfach festgestellt werden können, direkt den Änderungen des auf die Abdeckung angewendeten Drucks.The Invention solves This object with the means of claim 1, in particular by the signal processing means set up to activate the horn is when a signal change .DELTA.U, the one predetermined amount ΔU0 within a predetermined period of time exceeds Δt0. The evaluation of changes of the electrical signal time, instead of absolute values, allows the distinction of rapid pressure changes, which are caused by horn activation, of slow Pressure changes, which are caused by aging and thermal changes. The detection of a rapid pressure change is essentially independently from the absolute value of the internal pressure at the time of horn activation. According to the invention For example, one or more piezoelectric elements are sensitive as pressure Means used because the provided by the piezoelectric element Voltage is proportional to the amount of applied pressure. Therefore, voltage changes correspond in the signal voltage of a piezoelectric element that is simple can be determined directly to the changes the pressure applied to the cover.
Die Vorrichtung umfasst vorzugsweise mindestens ein elastisches Element, das zur Ausübung einer Vorspannkraft auf die Abdeckung angeordnet ist, um Vibrationen insbesondere in der Befestigung der Abdeckung zu vermeiden. Vorzugsweise ist das elastische Element zwischen der Abdeckung und dem piezoelektrischen Element gekoppelt. Dies erlaubt es, die elastische Konstante des elastischen Elements so hoch zu wählen, dass das elastische Element unter einer üblichen Druckkraft nicht signifikant komprimiert wird, um unerwünschte Verschiebung der Abdeckung zu verhindern. Vorzugsweise beträgt die elastische Konstante des elastischen Elements 30 N/mm oder mehr.The Device preferably comprises at least one elastic element, that to exercise a Biasing force is arranged on the cover to vibrations in particular to avoid in the attachment of the cover. Preferably the elastic element between the cover and the piezoelectric Element coupled. This allows the elastic constant of the elastic element so high that the elastic element under a usual Compressive force is not significantly compressed to unwanted displacement to prevent the cover. Preferably, the elastic constant of the elastic member 30 N / mm or more.
Das drucksensitive Mittel umfasst vorzugsweise mindestens drei über die Abdeckung verteilte piezoelektrische Elemente, um eine zuverlässige Druckfeststellung unabhängig von dem genauen Ort, an dem die Abdeckung von dem Insassen gedrückt wird, zu gestatten.The Pressure sensitive means preferably comprises at least three over the Cover distributed piezoelectric elements to ensure reliable pressure detection independently from the exact location where the cover is pushed by the occupant, to allow.
Vorzugsweise ist die Vorrichtung zum Erzeugen des elektrischen Signals ohne wesentliche Verschiebung der Abdeckung eingerichtet, was es gestattet, die Reaktionszeit auf ein Minimum zu reduzieren. Die Erfindung ist besonders wertvoll für verschiebungslose Vorrichtungen, wo auch kleine alterungsbedingte oder thermische Änderungen einen signifikanten Effekt auf den absoluten Betrag haben können.Preferably is the device for generating the electrical signal without essential Shifting the cover set up, which allows the reaction time to a minimum. The invention is particularly valuable for relocationless Devices where also small age-related or thermal changes have a significant effect on the absolute amount.
Die Erfindung wird im Folgenden anhand vorteilhafter Ausführungsformen unter Bezugnahme auf die beigefügten Figuren erläutert. Dabei zeigt:The Invention will be described below with reference to advantageous embodiments with reference to the attached Figures explained. Showing:
Die
Befestigungsmittel
In
der in
Die
elastische Konstante des elastischen Elements
Die
piezoelektrischen Elemente
In
Die
Situation in
Vibrationen
in der Lenkradanordnung
Eine
andere Möglichkeit
zum Kompensieren periodischer Änderungen
in der Signalspannung insbesondere aufgrund von Vibrationen ist
die Durchführung
einer geeigneten Vorverarbeitung in dem Signalverarbeitungsmittel
Das
Signalverarbeitungsmittel
Ein
Prüfmodus
zum Prüfen
der korrekten Montage einer Schnappverbindung
Claims (14)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810049847 DE102008049847B4 (en) | 2008-10-01 | 2008-10-01 | Device for activating a horn for a motor vehicle |
PCT/EP2009/006466 WO2010037462A1 (en) | 2008-10-01 | 2009-09-07 | A signal horn activation device for a motor vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810049847 DE102008049847B4 (en) | 2008-10-01 | 2008-10-01 | Device for activating a horn for a motor vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102008049847A1 DE102008049847A1 (en) | 2010-04-08 |
DE102008049847B4 true DE102008049847B4 (en) | 2010-10-21 |
Family
ID=41320394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810049847 Expired - Fee Related DE102008049847B4 (en) | 2008-10-01 | 2008-10-01 | Device for activating a horn for a motor vehicle |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102008049847B4 (en) |
WO (1) | WO2010037462A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120286970A1 (en) * | 2011-05-13 | 2012-11-15 | GM Global Technology Operations LLC | Variable tone horn system |
US9254786B2 (en) | 2012-11-05 | 2016-02-09 | Nissan North America, Inc. | Vehicle horn control assembly |
DE102015206367A1 (en) * | 2015-04-09 | 2016-10-13 | Takata AG | Steering wheel assembly for a steering wheel of a motor vehicle |
DE102019117066A1 (en) | 2019-04-01 | 2020-10-01 | Preh Gmbh | Vehicle steering wheel system with energy-saving, electromechanical triggering device for triggering an acoustic output |
DE102019117069A1 (en) * | 2019-04-01 | 2020-10-01 | Preh Gmbh | Vehicle steering wheel system with improved electromechanical triggering device for triggering an acoustic output |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2362204A1 (en) * | 1973-01-04 | 1974-07-11 | Philips Nv | MECHANICAL-ELECTRICAL CONVERTER |
DE29822832U1 (en) * | 1998-12-14 | 1999-02-25 | Petri Ag, 63743 Aschaffenburg | Steering wheel for motor vehicles |
DE10100257C2 (en) * | 2001-01-05 | 2003-02-06 | Autoliv Dev | Method for zero point adjustment in a steering wheel provided with a pressure sensor-controlled triggering of the horn function |
KR100444236B1 (en) * | 1997-08-08 | 2004-10-14 | 삼성전자주식회사 | Method for registering/changing a telephone number of a local station in a wireless facsimile, specially related to registering or changing the telephone number in all portable devices by one-time registration performed through a fixing device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5423569A (en) * | 1991-07-08 | 1995-06-13 | United Technologies Automotive, Inc. | Electric signalling in a supplemental passenger restraint system |
US5303952A (en) * | 1992-12-23 | 1994-04-19 | United Technologies Automotive, Inc. | Electric signalling in a supplemental vehicle restraint system |
US5398962A (en) * | 1994-02-14 | 1995-03-21 | Force Imaging Technologies, Inc. | Horn activator for steering wheels with air bags |
US5489806A (en) * | 1994-05-11 | 1996-02-06 | Morton International, Inc. | Airbag horn switch with temperature compensation |
GB9619547D0 (en) * | 1996-09-19 | 1996-10-30 | Alliedsignal Deutschland Gmbh | Horn switch |
US6236309B1 (en) * | 1999-09-15 | 2001-05-22 | Delphi Technologies, Inc. | Horn switch assembly for an airbag module |
DE20302085U1 (en) * | 2003-02-11 | 2003-07-03 | Merlaku, Kastriot, 80807 München | Motor vehicle horn control system with pressure sensor incorporated in horn switch |
-
2008
- 2008-10-01 DE DE200810049847 patent/DE102008049847B4/en not_active Expired - Fee Related
-
2009
- 2009-09-07 WO PCT/EP2009/006466 patent/WO2010037462A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2362204A1 (en) * | 1973-01-04 | 1974-07-11 | Philips Nv | MECHANICAL-ELECTRICAL CONVERTER |
KR100444236B1 (en) * | 1997-08-08 | 2004-10-14 | 삼성전자주식회사 | Method for registering/changing a telephone number of a local station in a wireless facsimile, specially related to registering or changing the telephone number in all portable devices by one-time registration performed through a fixing device |
DE29822832U1 (en) * | 1998-12-14 | 1999-02-25 | Petri Ag, 63743 Aschaffenburg | Steering wheel for motor vehicles |
DE10100257C2 (en) * | 2001-01-05 | 2003-02-06 | Autoliv Dev | Method for zero point adjustment in a steering wheel provided with a pressure sensor-controlled triggering of the horn function |
Non-Patent Citations (1)
Title |
---|
KR 1997-037873 |
Also Published As
Publication number | Publication date |
---|---|
WO2010037462A1 (en) | 2010-04-08 |
DE102008049847A1 (en) | 2010-04-08 |
WO2010037462A8 (en) | 2010-05-27 |
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Legal Events
Date | Code | Title | Description |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |