DE102004024296B4 - Switch flap, e.g. twisting flap or shaft, damage detection device, used in motor vehicle component, has electronic device to detect change in surface coating resistance of shaft, due to cracks in shaft, when current is applied to coatings - Google Patents
Switch flap, e.g. twisting flap or shaft, damage detection device, used in motor vehicle component, has electronic device to detect change in surface coating resistance of shaft, due to cracks in shaft, when current is applied to coatings Download PDFInfo
- Publication number
- DE102004024296B4 DE102004024296B4 DE200410024296 DE102004024296A DE102004024296B4 DE 102004024296 B4 DE102004024296 B4 DE 102004024296B4 DE 200410024296 DE200410024296 DE 200410024296 DE 102004024296 A DE102004024296 A DE 102004024296A DE 102004024296 B4 DE102004024296 B4 DE 102004024296B4
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- Germany
- Prior art keywords
- shaft
- flap
- coatings
- surface layer
- cracks
- 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
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/022—Power-transmitting couplings or clutches
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Erkennen einer Wellenbeschädigung, insbesondere einer Schaltklappenwelle für Kraftfahrzeug-Bauteile.The Invention relates to a device for detecting a wave damage, in particular a switching valve shaft for motor vehicle components.
In Kraftfahrzeugen werden Schaltklappen, die beispielsweise in Luftansaugkanälen angeordnet sind, Drallklappen und/oder Tumbleklappen über üblicherweise elektrische Antriebseinheiten geschwenkt. Hierzu sind die Wellen ggf. über ein Getriebe mit der Antriebseinheit verbunden. Ferner tragen die Wellen üblicherweise eine, ggf. auch mehrere Klappen.In Motor vehicles are switching flaps, which are arranged for example in air intake ducts, Swirl flaps and / or tumble flaps over usually electric drive units pivoted. For this purpose, the waves are possibly via a transmission with the drive unit connected. Furthermore, the waves usually carry one, possibly also several flaps.
Aus
Das Vorsehen eines elektrisch leitfähigen Leiters in einer Welle hat den Nachteil, dass nur gebrochene Wellen detektiert werden können. Eine beschädigte, beispielsweise angebrochene Welle kann nicht detektiert werden.The Provision of an electrically conductive conductor in a wave has the disadvantage that only detected broken waves can be. A damaged, For example, a broken shaft can not be detected.
Insbesondere ist es nicht möglich, das Auftreten eines Wellenbruchs frühzeitig vor dem tatsächlichen Bruch zu erkennen.Especially it is impossible, the occurrence of a wave break early before the actual To detect breakage.
Aus
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Aufgabe der Erfindung ist es, eine Vorrichtung zum Erkennen einer Wellenbeschädigung zu schaffen, mit der eine Wellenbeschädigung frühzeitig erkannt werden kann.task the invention is to provide a device for detecting wave damage, with a wave damage detected early can be.
Die Lösung der Aufgabe erfolgt erfindungsgemäß durch die Merkmale des Anspruchs 1.The solution The object is achieved according to the invention by the features of the claim 1.
Erfindungsgemäß ist als elektrisch leitfähiges Überwachungselement, das mit einer Elektronikeinheit verbunden ist, eine elektrisch leitfähige Oberflächenschicht auf der Welle vorgesehen. An der Oberflächenschicht liegt ein Potential an. Durch eine Beschädigung der Oberflächenschicht, die durch eine beispielsweise einen Schwellwert überschreitende Verformung hervorrufen wird, erfolgt eine Potentialänderung. Diese kann von der Elektronikeinheit detektiert werden. Da die Potentialänderung erfindungsgemäß bereits vor dem tatsächlichen Bruch der Welle auftritt, kann eine Wellenbeschädigung bzw. ein Wellenbruch frühzeitig detektiert werden. Dies hat den Vorteil, dass beispielsweise ein entsprechender Hinweis bzw. eine Warnmeldung erfolgen kann, so dass vor einem Wellenbruch und einer ggf. hierdurch hervorgerufenen Beschädigung weiterer Bauteile das Bauteil bereits ausgewechselt werden kann. Anstelle des Anliegens eines elektrischen Potentials an der Oberflächenschicht kann auch ununterbrochen oder zu vorgegebenen Zeitpunkten ein elektrischer Strom durch die Oberflächenschicht fließen. Eine Verformung bzw. ein Auftreten von Rissen in der Oberflächenschicht führt sodann zu einer Widerstandsänderung, die von der Elektronikeinheit detektierbar ist.According to the invention is as electrically conductive monitoring element, which is connected to an electronic unit, an electrically conductive surface layer provided on the shaft. There is a potential at the surface layer at. By damage the surface layer, which cause by a threshold, for example, a deformation exceeding If there is a potential change. This can be detected by the electronics unit. Because the potential change already according to the invention before the actual break the wave occurs, a wave damage or a wave break early be detected. This has the advantage that, for example, a corresponding Note or a warning message can be made so that before a wave break and possibly caused thereby damage to other components that Component can already be replaced. Instead of the concern An electric potential at the surface layer may also be uninterrupted or at predetermined times an electric current through the surface layer flow. A deformation or occurrence of cracks in the surface layer then leads to a resistance change, which is detectable by the electronic unit.
Erfindungsgemäß ist die Oberflächenschicht an zumindest einer bruchgefährdeten Stelle einer Schaltklappenwelle für Kraftfahrzeug-Bauteile, vorzugsweise an sämtlichen bruchgefährdeten Stellen, vorgesehen. Bei einer Welle, die mindestens eine Klappe trägt, ist der Übergang zwischen der Klappe und der Welle bruchgefährdet.According to the invention Surface layer on at least one vulnerable to breakage Position of a switching valve shaft for motor vehicle components, preferably at all fracture risk areas, provided. A wave that carries at least one flap is the transition between the flap and the shaft at risk of breakage.
Die Verbindung zwischen der Elektronikeinheit und der Oberflächenschicht kann beispielsweise durch das Vorsehen von an der Oberflächenschicht anliegenden Bürsten oder dgl. erfolgen. Vorzugsweise erfolgt die elektrische Kontaktierung jedoch über die Lager, insbesondere die Gleitlager, die elektrisch leitfähig ausgebildet sind.The Connection between the electronics unit and the surface layer For example, by providing on the surface layer adjacent to brush or the like. Preferably, the electrical contacting takes place however over the Bearings, in particular the plain bearings, which are electrically conductive are.
Vorzugsweise wird eine leitfähige Oberflächenschicht aus Kupfer oder Kohlenstoff aufgebracht. Alternativ kann eine Schicht aus leitfähigem Kunststoff aufgespritzt werden. Durch das Beschichten der Oberfläche ist eine einfache Herstellung der Welle gewährleistet.Preferably becomes a conductive surface layer made of copper or carbon. Alternatively, a layer Made of conductive plastic be sprayed on. By coating the surface is ensures easy production of the shaft.
Vorzugsweise ist die Dehnbarkeit der Oberflächenschicht geringer als die der Welle. Dies hat zur Folge, dass beim Auftreten von zu hohen Belastungen Risse bzw. Verformungen in der Oberflächenschicht auftreten bevor eine Beschädigung der Welle, die vorzugsweise aus Kunststoff hergestellt ist, erfolgt. Hierdurch kann, wie vorstehend beschrieben, eine Beschädigung der Welle bzw. ein Wellenbruch vor dem tatsächlichen Auftreten detektiert werden.Preferably is the extensibility of the surface layer less than that of the wave. This has the consequence that when occurring from excessive loads cracks or deformations in the surface layer occur before damage the shaft, which is preferably made of plastic, takes place. As a result, as described above, damage to the Wave or a wave break detected before the actual occurrence become.
Nachfolgend wird die Erfindung an Hand einer bevorzugten Ausführungsform unter Bezugnahme auf die anliegenden Zeichnungen näher erläutert.following The invention is based on a preferred embodiment explained in more detail with reference to the accompanying drawings.
Es zeigen:It demonstrate:
Die
Vorrichtungen zum Erkennen einer Wellenbeschädigung weist eine Welle
Auf
der Welle
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410024296 DE102004024296B4 (en) | 2004-05-15 | 2004-05-15 | Switch flap, e.g. twisting flap or shaft, damage detection device, used in motor vehicle component, has electronic device to detect change in surface coating resistance of shaft, due to cracks in shaft, when current is applied to coatings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410024296 DE102004024296B4 (en) | 2004-05-15 | 2004-05-15 | Switch flap, e.g. twisting flap or shaft, damage detection device, used in motor vehicle component, has electronic device to detect change in surface coating resistance of shaft, due to cracks in shaft, when current is applied to coatings |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102004024296A1 DE102004024296A1 (en) | 2005-12-08 |
DE102004024296B4 true DE102004024296B4 (en) | 2006-05-24 |
Family
ID=35336066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410024296 Expired - Fee Related DE102004024296B4 (en) | 2004-05-15 | 2004-05-15 | Switch flap, e.g. twisting flap or shaft, damage detection device, used in motor vehicle component, has electronic device to detect change in surface coating resistance of shaft, due to cracks in shaft, when current is applied to coatings |
Country Status (1)
Country | Link |
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DE (1) | DE102004024296B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012106295A1 (en) * | 2012-07-12 | 2014-10-30 | Institut Für Verbundwerkstoffe Gmbh | Slide bearing and method for determining the wear of a plain bearing |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2459189C1 (en) * | 2011-03-11 | 2012-08-20 | Государственное образовательное учреждение высшего профессионального образования "Ивановская государственная текстильная академия" (ИГТА) | Method of controlling shaft coating elastic properties |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3535473A1 (en) * | 1985-10-04 | 1987-04-09 | Krupp Gmbh | Method and arrangement for detecting wear and cutting-edge breakage in tools with cutting edges of mechanically resistant material |
DE19923143A1 (en) * | 1999-05-20 | 2000-11-23 | Univ Dresden Tech | Device for online monitoring of failure-tolerant high-performance rotors of composite material comprises a unit forming a transponder on a miniature electric circuit, an antenna circuit and a sensor for fractures. |
DE10215927A1 (en) * | 2002-04-11 | 2003-11-06 | Pierburg Gmbh | Shaft breakage detection device in which the shaft itself is electrically conducting and forms a conduction path between earth and an electronic unit, so that shaft breakage changes the electronic unit output signal |
-
2004
- 2004-05-15 DE DE200410024296 patent/DE102004024296B4/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3535473A1 (en) * | 1985-10-04 | 1987-04-09 | Krupp Gmbh | Method and arrangement for detecting wear and cutting-edge breakage in tools with cutting edges of mechanically resistant material |
DE19923143A1 (en) * | 1999-05-20 | 2000-11-23 | Univ Dresden Tech | Device for online monitoring of failure-tolerant high-performance rotors of composite material comprises a unit forming a transponder on a miniature electric circuit, an antenna circuit and a sensor for fractures. |
DE10215927A1 (en) * | 2002-04-11 | 2003-11-06 | Pierburg Gmbh | Shaft breakage detection device in which the shaft itself is electrically conducting and forms a conduction path between earth and an electronic unit, so that shaft breakage changes the electronic unit output signal |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012106295A1 (en) * | 2012-07-12 | 2014-10-30 | Institut Für Verbundwerkstoffe Gmbh | Slide bearing and method for determining the wear of a plain bearing |
Also Published As
Publication number | Publication date |
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DE102004024296A1 (en) | 2005-12-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
Effective date: 20111201 |