DE3425959A1 - Steering wheel for a motor vehicle - Google Patents

Steering wheel for a motor vehicle

Info

Publication number
DE3425959A1
DE3425959A1 DE19843425959 DE3425959A DE3425959A1 DE 3425959 A1 DE3425959 A1 DE 3425959A1 DE 19843425959 DE19843425959 DE 19843425959 DE 3425959 A DE3425959 A DE 3425959A DE 3425959 A1 DE3425959 A1 DE 3425959A1
Authority
DE
Germany
Prior art keywords
steering wheel
motor vehicle
wheel rim
fibers
spokes
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.)
Granted
Application number
DE19843425959
Other languages
German (de)
Other versions
DE3425959C2 (en
Inventor
Klaus Ing.(grad.) 8750 Aschaffenburg Grothe
Martin Ing.(grad.) 8751 Kleinwallstadt Kreuzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kolbenschmidt AG
Original Assignee
Kolbenschmidt AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kolbenschmidt AG filed Critical Kolbenschmidt AG
Priority to DE19843425959 priority Critical patent/DE3425959C2/en
Publication of DE3425959A1 publication Critical patent/DE3425959A1/en
Application granted granted Critical
Publication of DE3425959C2 publication Critical patent/DE3425959C2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/04—Hand wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Controls (AREA)

Abstract

In a steering wheel for a motor vehicle, in which steering wheel hub, steering wheel spokes and the extrusion coating around the spokes on the steering wheel rim are moulded from a diecast component, the steering wheel rim consists, for the purpose of reducing weight, of plastic reinforced with fibres.

Description

Kraftfahrzeug-Lenkrad Motor vehicle steering wheel

Die Erfindung betrifft ein Kraftfahrzeug-Lenkrad, bei dem der Lenkradkranz sowie die aus einem Druckgußteil bestehenden Lenkradnabe, Lenkradspeichen und der Umguß der Speichen am Lenkradkranz mit einer plastisch oder elastisch verformbaren Kunststoffschicht überzogen sind.The invention relates to a motor vehicle steering wheel in which the steering wheel rim as well as the steering wheel hub, steering wheel spokes and the Casting around the spokes on the steering wheel rim with a plastically or elastically deformable one Plastic layer are coated.

Ein solches Kraftfahrzeug-Lenkrad ist in Einspeichen-Bauweise aus der EP-PS 0 029 616 bekannt, wobei die in der Mittelebene verlaufende Lenkradspeiche, die Lenkradnabe und der Umguß des aus Stahl bestehenden Lenkradkranzes aus einem aus einer Aluminiumlegierung gegossenen Druckgußteil gebildet sind. Um bei einem Zusammenstoß des Kraftfahrzeuges die aus einem Aufprall auf das Lenkrad resultierende Verletzungsgefahr für den Fahrzeugführer möglichst gering zu halten, ist die Druckgußschicht des Umgußes im Bereich der Verbindung Lenkradkranz/Lenkradspeiche mit als Sollbruchstellen dienenden Kerben versehen.Such a motor vehicle steering wheel is made of a single-spoke design known from EP-PS 0 029 616, the steering wheel spoke running in the central plane, the steering wheel hub and the casting of the steering wheel rim made of steel from one are formed from an aluminum alloy cast die casting. To with one Collision of the motor vehicle resulting from an impact on the steering wheel The die-cast layer is to keep the risk of injury to the driver as low as possible of the encapsulation in the area of the connection between the steering wheel rim and the steering wheel spoke as predetermined breaking points serving notches.

Durch die Senkung des Gewichts von Bauteilen für moderne Kraftfahrzeuge kann der Kraftstoffverbrauch verringert und somit ein Anteil zur Energieeinsparung geleistet werden.By reducing the weight of components for modern automobiles can reduce fuel consumption and thus contribute to energy saving be done.

Außer dieser Forderung nach geringstmöglichem Gewicht werden an Kraftfahrzeuge hinsichtlich ihres Schwingungsverhaltens wegen der gestiegenen Komfortansprüchen hohe Anforderungen gestellt. Ein Teil dieser Lntwicklungsziele kann mit dem Einsatz von leichten Lenkrädern durch deren kleinere oszillierende Massen erreicht werden.In addition to this requirement for the lowest possible weight, motor vehicles with regard to their vibration behavior because of the increased High demands placed on comfort. Part of these development goals can with the use of lightweight steering wheels due to their smaller oscillating Masses can be reached.

Für den Lenkradhersteller besteht deshalb die Aufgabe, leichte Lenkrad-Bauarten für Kraftfahrzeuge zu entwickeln, die der modernen Kraftfahrzeugtechnik angepaßt sind. Line Gewichtsreduzierung darf dabei allerdings nicht zu Lasten der Betriebs- und Unfallsicherheit gehen.The task for the steering wheel manufacturer is therefore to produce lightweight steering wheel designs to develop for motor vehicles that are adapted to modern motor vehicle technology are. Line weight reduction must not be at the expense of the operational and accident safety go.

Die Lösung dieser Aufgabe besteht darin, daß bei dem eingangs beschriebenen Kraftfahrzeug-Lenkrad der Lenkradkranz aus mit Fasern verstärktem synthetischem Kunststoff gebildet ist.The solution to this problem is that in the case of the initially described Motor vehicle steering wheel the steering wheel rim made of synthetic reinforced with fibers Plastic is formed.

Als Fasern kommen insbesondere Glas- unu/oder Kohlefasern mit einem Durchmesser von 5 bis 15zum in Betracht, die in synthetische Harze aus der Gruppe der Epoxidharze oder der Gruppe der Polyetherharze eingebettet sind. Vorzugsweise ist der Lenkradkranz aus mit flüssigem Kunststoff beschichteten Endlosfasern gewickelt oder entsprechend beschichteten kurzen Fasern gepreßt.In particular, glass and / or carbon fibers are used as fibers Diameters from 5 to 15 to be considered included in synthetic resins from the group the epoxy resins or the group of polyether resins are embedded. Preferably the steering wheel rim is wound from continuous fibers coated with liquid plastic or pressed appropriately coated short fibers.

Um eine Festigkeit von wenigstens 35.000 N/mm2 zu gewährleisten, beträgt der Fasergehalt des Lenkradkranzes wenigstens 50 Gew.%, vorzugsweise 60 bis 80 %.To ensure a strength of at least 35,000 N / mm2, is the fiber content of the steering wheel rim is at least 50% by weight, preferably 60 to 80%.

Durch die erfindungsgemäße Lenkradkonstruktion wird, verglichen mit einem Lenkrad, bei dem der Lenkradkranz aus Stahldraht besteht, eine Gewichtsreduzierung von wenigstens 50 % erzielt. Das führt auch zu einem vergleichsweise niedrigeren Massenträgheitsmoment von wenigstens -2 2 2 2 x 10 2 kg/m , wodurch die Fahreigenschaften insbesondere bei Kraftfahrzeugen mit Vorderradantrieb deutlich verbessert werden. Gleichzeitig wird auch eine geringere Achsbelastung erreicht und damit die Gefahr des Aufschaukelns reduziert, so daß das Lenkrad ohne weiteres allein in die Null-Stellung zurückläuft. Ferner wird durch das geringere Gewicht des Kraftfahrzeug-Lenkrads die Sicherheit insofern erhöht als im Falle eines Unfalls dessen Masse beim Aufprall des Fahrzeugführers auf das Lenkrad geringer ist.The steering wheel construction according to the invention is compared with a steering wheel in which the steering wheel rim is made of steel wire, a weight reduction achieved by at least 50%. That also leads to a comparatively lower one Mass moment of inertia of at least -2 2 2 2 x 10 2 kg / m, which improves the driving characteristics in particular in motor vehicles with front-wheel drive can be significantly improved. At the same time there will also be a lower Axle load reached and thus reducing the risk of rocking, so that the steering wheel is easily alone runs back to the zero position. Furthermore, the lower weight of the motor vehicle steering wheel the safety is increased insofar as, in the event of an accident, its mass on impact of the vehicle driver on the steering wheel is less.

Die Erfindung ist in der Zeichnung beispielhaft dargestellt und wird nachfolgend näher erläutert. Es zeigen: Fig. 1 eine Draufsicht auf einen Ausschnitt der rechten Hälfte eines Lenkradskeletts.The invention is and is exemplified in the drawing explained in more detail below. They show: FIG. 1 a plan view of a detail the right half of a steering wheel skeleton.

Fig. 2 einen Schnitt entlang der Schnittlinie 1-1 der Figur 1 mit trapezförmigem Querschnitt des Lenkradkranzes.Fig. 2 shows a section along the section line 1-1 of Figure 1 with trapezoidal cross-section of the steering wheel rim.

Fig. 3 einen Schnitt entlang der Schnittlinie I-I der Figur 1 mit vieleckförmigem Querschnitt des Lenkradkranzes.3 shows a section along the section line I-I in FIG polygonal cross-section of the steering wheel rim.

Bei dem Kraftfahrzeug-Lenkrad bilden die Lenkradnabe 1, die Lenkradspeichen 2, 3 und der Umguß 4, 5 der Lenkradspeichen am Lenkradkranz 6 ein einziges aus einer herkömmlichen Aluminiumlegierung bestehendes Druckgußteil. Der Lenkradkranz 6 besteht zu 75 % aus Endlos-Glasfasern, die in Polyestherharz eingebettet sind. Der Querschnitt des Lenkradkranzes 6 kann gemäß Figur 2 trapezförmig oder gemäß Figur 3 vieleckförmig ausgebildet sein.In the motor vehicle steering wheel, the steering wheel hub 1 forms the steering wheel spokes 2, 3 and the casting 4, 5 of the steering wheel spokes on the steering wheel rim 6, a single one conventional aluminum alloy die-cast part. The steering wheel rim 6 consists 75% made of continuous glass fibers that are embedded in polyester resin. The cross section of the steering wheel rim 6 can be trapezoidal according to FIG. 2 or polygonal according to FIG be trained.

Claims (6)

PATENTANSPRUCHE 1. Kraftfahrzeug-Lenkrad, bei dem der Lenkradkranz sowie die aus einem Druckgußteil bestehenden Lenkradnabe, Lenkradspeichen und der Umguß der Speichen am Lenkradkranz mit einer plastisch oder elastisch verformbaren Kunststoffschicht überzogen sind, dadurch gekennzeichnet, daß der Lenkradkranz (6) aus mit Fasern verstärktem synthetischem Kunststoff besteht.PATENT CLAIMS 1. Motor vehicle steering wheel in which the steering wheel rim as well as the steering wheel hub, steering wheel spokes and the Casting around the spokes on the steering wheel rim with a plastically or elastically deformable one Plastic layer are coated, characterized in that the steering wheel rim (6) made of synthetic plastic reinforced with fibers. 2. Kraftfahrzeug-Lenkrad nach Anspruch 1, dadurch gekennzeichnet, daß als Fasern Glas- und/oder Kohlefasern mit einem Durchmesser von 5 bis istim verwendet sind.2. Motor vehicle steering wheel according to claim 1, characterized in that that the fibers are glass and / or carbon fibers with a diameter of 5 to im are used. 3. Kraftfahrzeug-Lekrad nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Lenkradkranzes (6) aus mit flüssigem in Kunststoff beschichteten Endlos-Glasfasern gewickelt ist.3. Motor vehicle Lekrad according to claim 1 and 2, characterized in that that the steering wheel rim (6) made of continuous glass fibers coated with liquid in plastic is wrapped. 4. Kraftfahrzeug-Lenkrad nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Lenkradkranz (6) aus mit flüssigem Kunststoff beschichteten kurzen Fasern gepreßt ist.4. Motor vehicle steering wheel according to claim 1 and 2, characterized in that that the steering wheel rim (6) made of short fibers coated with liquid plastic is pressed. 5. Kraftfahrzeug-Lenkrad nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß als Kunststoffe synthetische Harze aus der Gruppe der Epoxid- oder Polyetherharze verwendet sind.5. Motor vehicle steering wheel according to claims 1 to 4, characterized in that that synthetic resins from the group of epoxy or polyether resins are used as plastics are used. 6. Kraftfahrzeug-Lenkrad nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß der Fasergehalt des Lenkradkranzes (6) wenigstens 50 Gew.%, vorzugsweise 60 bis 80 Gew.% beträgt.6. Motor vehicle steering wheel according to claims 1 to 5, characterized in that that the fiber content of the steering wheel rim (6) is at least 50% by weight, preferably 60 to 80% by weight.
DE19843425959 1984-07-14 1984-07-14 Motor vehicle steering wheel Expired - Lifetime DE3425959C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19843425959 DE3425959C2 (en) 1984-07-14 1984-07-14 Motor vehicle steering wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843425959 DE3425959C2 (en) 1984-07-14 1984-07-14 Motor vehicle steering wheel

Publications (2)

Publication Number Publication Date
DE3425959A1 true DE3425959A1 (en) 1986-01-16
DE3425959C2 DE3425959C2 (en) 1994-02-10

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ID=6240623

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843425959 Expired - Lifetime DE3425959C2 (en) 1984-07-14 1984-07-14 Motor vehicle steering wheel

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DE (1) DE3425959C2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0292038A2 (en) * 1987-05-21 1988-11-23 KOLBENSCHMIDT Aktiengesellschaft Skeleton construction for motor vehicle steering wheels
EP0309316A1 (en) * 1987-09-25 1989-03-29 Ecia - Equipements Et Composants Pour L'industrie Automobile Process for the production of a lighter steering wheel
US4920821A (en) * 1985-01-22 1990-05-01 Kabushiki Kaishma Tokai-Rika-Denki-Seisakusho Steering wheel for vehicle
US4976801A (en) * 1988-02-19 1990-12-11 Ecia - Equipments Et Composants Pour L'industrie Automobile Process for manufacturing a steering wheel for a motor vehicle
DE29901404U1 (en) 1999-01-27 1999-04-29 TRW Automotive Safety Systems GmbH, 63743 Aschaffenburg Motor vehicle steering wheel
DE102006041386A1 (en) * 2006-08-30 2008-03-13 Takata-Petri Ag Steering wheel for a vehicle and method for its manufacture

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012220288A1 (en) 2012-11-07 2014-06-12 Bayerische Motoren Werke Aktiengesellschaft Vehicle steering wheel made of fiber-reinforced plastic
DE102021123457A1 (en) 2021-09-10 2023-03-16 Bayerische Motoren Werke Aktiengesellschaft Method for manufacturing a vehicle steering wheel and vehicle steering wheel manufactured therewith

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038820A1 (en) * 1979-10-17 1981-04-30 Nissan Motor Co., Ltd., Yokohama, Kanagawa STEERING WHEEL FOR A MOTOR VEHICLE AND METHOD FOR THE PRODUCTION THEREOF
EP0029616B1 (en) * 1979-11-23 1983-07-20 Karl Schmidt Gmbh Single-spoke steering wheel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038820A1 (en) * 1979-10-17 1981-04-30 Nissan Motor Co., Ltd., Yokohama, Kanagawa STEERING WHEEL FOR A MOTOR VEHICLE AND METHOD FOR THE PRODUCTION THEREOF
EP0029616B1 (en) * 1979-11-23 1983-07-20 Karl Schmidt Gmbh Single-spoke steering wheel

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920821A (en) * 1985-01-22 1990-05-01 Kabushiki Kaishma Tokai-Rika-Denki-Seisakusho Steering wheel for vehicle
EP0292038A2 (en) * 1987-05-21 1988-11-23 KOLBENSCHMIDT Aktiengesellschaft Skeleton construction for motor vehicle steering wheels
EP0292038A3 (en) * 1987-05-21 1989-12-06 KOLBENSCHMIDT Aktiengesellschaft Skeleton construction for motor vehicle steering wheels
EP0309316A1 (en) * 1987-09-25 1989-03-29 Ecia - Equipements Et Composants Pour L'industrie Automobile Process for the production of a lighter steering wheel
FR2620996A1 (en) * 1987-09-25 1989-03-31 Peugeot Aciers Et Outillage LIGHTWEIGHT STEERING WHEEL, PARTICULARLY FOR MOTOR VEHICLES OBTAINED FROM STAMPABLE REINFORCED SYNTHETIC MATERIALS AND METHOD FOR THE PRODUCTION THEREOF
US4875387A (en) * 1987-09-25 1989-10-24 Equipments Et Composants Pour L'industrie Automobile Lightened steering wheel, in particular for a motor vehicle, produced from stampable, reinforced, synthetic materials and process for the manufacture thereof
US4976801A (en) * 1988-02-19 1990-12-11 Ecia - Equipments Et Composants Pour L'industrie Automobile Process for manufacturing a steering wheel for a motor vehicle
DE29901404U1 (en) 1999-01-27 1999-04-29 TRW Automotive Safety Systems GmbH, 63743 Aschaffenburg Motor vehicle steering wheel
DE102006041386A1 (en) * 2006-08-30 2008-03-13 Takata-Petri Ag Steering wheel for a vehicle and method for its manufacture

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Publication number Publication date
DE3425959C2 (en) 1994-02-10

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: KOLBENSCHMIDT AG, 7107 NECKARSULM, DE AUDI AG, 807

8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition