WO1998050215A1 - Verfahren zur herstellung eines leichten lenkrades - Google Patents
Verfahren zur herstellung eines leichten lenkrades Download PDFInfo
- Publication number
- WO1998050215A1 WO1998050215A1 PCT/EP1998/002669 EP9802669W WO9850215A1 WO 1998050215 A1 WO1998050215 A1 WO 1998050215A1 EP 9802669 W EP9802669 W EP 9802669W WO 9850215 A1 WO9850215 A1 WO 9850215A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steering wheel
- granules
- heated
- skeleton
- shape
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/06—Making multilayered articles
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
Definitions
- the invention relates to a method for producing a steering wheel with a low mass moment of inertia by casting a metallic steering wheel skeleton with a plastic.
- thermomeric materials such as CAB and PVC with a specific density of 1.18 to 1.39 g / cm 3 .
- Shells made of injection-molded polypropylene, which has a specific density of 0.89 to 0.93 g / cm 3 are still used in commercial vehicles. These materials were largely replaced in the passenger car area by polyurethane, from which, with the addition of blowing agents, a so-called integral foam structure can be produced, in which a core area with a microcellular structure is surrounded by a dense, largely non-porous and haptically excellent cover layer. Steering wheel coverings with a specific density in the range of 0.8 g / cm 3 are thus achieved.
- the parameters of the steering system are so fine-tuned to one another in terms of high active driving safety that even minor changes are perceived as disruptive by the driver.
- the steering system can be further improved by reducing the moment of inertia of the steering wheel. Since the cost of materials for the load-bearing steering wheel structure, ie in particular for the steering wheel skeleton in general, cannot be further reduced without restricting operational and accident safety, a further reduction in the inertial mass of the casing is of considerable importance. There is therefore the task of further developing the known method for casting a steering wheel skeleton. that the moment of inertia of the steering wheel can be further reduced without having to accept disadvantages in any other way.
- a steering wheel is to be produced that has at least the same level of operational and safety technology as the steering wheels for passenger cars that are common today, and that has no disadvantages in all functional, haptic and aesthetic matters compared to this standard, and that at the same time has a significantly lower moment of inertia.
- the steering wheel skeleton and a propellant-containing granulate made of a thermoplastic, in particular polypropylene or polyethylene are introduced in a predetermined quantity into a steering wheel shape, in that the granulate is heated to at least 100.degree. C. and in that it swells and melts and connecting the granulate particles in the steering wheel shape to form a steering wheel body surrounding the steering wheel skeleton, foamed on the inside and provided on the outside with a substantially closed surface, the specific density of which is less than 0.4 g / cm 3 .
- the moment of inertia of the steering wheels can be reduced considerably while the material expenditure for the steering wheel skeleton remains the same, because the largest proportion of the material processed according to the invention in Steering wheel rim is arranged.
- the lowering of the steering wheel weight also complies with the general economic endeavor to reduce weight in vehicle construction.
- the material used can be used again without great processing costs, so that its use is also to be welcomed ecologically.
- cover layer made of leather, wood veneer or comparable materials can also be applied in a second operation, as described in subclaims 9 to 13.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10547735A JP2000514743A (ja) | 1997-05-08 | 1998-05-06 | 軽量ステアリングホイールの製造法 |
EP98929284A EP0912314A1 (de) | 1997-05-08 | 1998-05-06 | Verfahren zur herstellung eines leichten lenkrades |
BR9804887-2A BR9804887A (pt) | 1997-05-08 | 1998-05-06 | Processo de producão de um volante de direcão. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19719321.8 | 1997-05-08 | ||
DE19719321A DE19719321C2 (de) | 1997-05-08 | 1997-05-08 | Herstellung eines leichten Lenkrades |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998050215A1 true WO1998050215A1 (de) | 1998-11-12 |
Family
ID=7828909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/002669 WO1998050215A1 (de) | 1997-05-08 | 1998-05-06 | Verfahren zur herstellung eines leichten lenkrades |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0912314A1 (de) |
JP (1) | JP2000514743A (de) |
KR (1) | KR20000022405A (de) |
BR (1) | BR9804887A (de) |
DE (1) | DE19719321C2 (de) |
WO (1) | WO1998050215A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6386579B1 (en) * | 1999-07-22 | 2002-05-14 | Breed Automotive Technology, Inc. | Steering wheel |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10238517A1 (de) * | 2002-08-21 | 2003-10-09 | Ticona Gmbh | Bauteile für Automatikgetriebe aus Kunststoff und Verfahren zu deren Herstellung |
US20040076816A1 (en) * | 2002-10-22 | 2004-04-22 | Trw Vehicle Safety Systems Inc. | Wrapped steering wheel free of adhesive interface |
CN115139442B (zh) * | 2022-05-27 | 2024-06-25 | 均胜汽车安全系统(安徽)有限公司 | 一种方向盘发泡体制作方法及方向盘 |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1239806A (en) * | 1967-12-12 | 1971-07-21 | Badische Anilin & Soda Fabrick | Production of expanded moldings from olefin polymers |
GB2007579A (en) * | 1977-10-19 | 1979-05-23 | Isobox Barbier Sa | Apparatus and Process for Moulding Thin-Walled Objects in Expanded Plastics Material |
EP0072499A1 (de) * | 1981-08-05 | 1983-02-23 | Japan Styrene Paper Corporation | Verfahren zur Herstellung geschäumter Formkörper aus Polypropylen-Harz |
JPS59179321A (ja) * | 1983-03-30 | 1984-10-11 | Nissan Motor Co Ltd | 発泡性プラスチツク製品 |
DE3330826A1 (de) * | 1983-08-26 | 1985-03-14 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von schaumstoff-formkoerpern aus polyolefinen |
FR2592610A1 (fr) * | 1986-01-03 | 1987-07-10 | Usine Applic Polystyrene Expan | Procede et dispositif pour la fabrication d'une piece de forme de matiere synthetique thermoplastique, pre-expansee. |
DE3602996A1 (de) * | 1986-01-31 | 1987-08-06 | Mitsubishi Yuka Badische | Verfahren zur herstellung eines geformten polypropylenharzprodukts aus geschaeumten polypropylenteilchen |
DE3842846A1 (de) * | 1988-12-20 | 1990-06-21 | Frigolit Gmbh | Verfahren zur herstellung von polyolefin-sandwich-formteilen |
WO1990008642A1 (en) * | 1989-02-01 | 1990-08-09 | Adfoam Pty. Limited | Method and apparatus for manufacturing articles from expandible thermo-plastic materials |
EP0477476A2 (de) * | 1990-09-26 | 1992-04-01 | Alkor Gmbh Kunststoffe | Verfahren und Vorrichtung zur Herstellung von Formteilen oder Gegenständen |
EP0485714A1 (de) * | 1990-11-16 | 1992-05-20 | Hüls Aktiengesellschaft | Steuerverfahren zum Schäumen und Sintern von Kunststoff |
EP0492201A2 (de) * | 1990-12-20 | 1992-07-01 | BASF Aktiengesellschaft | Schaumstoff-Formkörper mit verschiedenen Dichtebereichen und Verfahren zu ihrer Herstellung |
DE9312247U1 (de) * | 1993-08-17 | 1993-10-28 | E. Dittrich KG "Schlüssel"-Erzeugnisse, 28307 Bremen | Formteil für Bedienungsteile oder die Innenverkleidung von Kraftfahrzeugen |
DE9313635U1 (de) * | 1993-08-17 | 1993-11-11 | E. Dittrich KG "Schlüssel"-Erzeugnisse, 28307 Bremen | Formteil für Bedienungsteile oder die Innenverkleidung von Kraftfahrzeugen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1669663A1 (de) * | 1966-09-09 | 1972-03-02 | Basf Ag | Verfahren zur Herstellung von Formkoerpern aus schaumfoermigen AEthylencopolymerisaten |
GB1329094A (en) * | 1969-12-22 | 1973-09-05 | Profile Expanded Plastics Ltd | Moulding articles of expandable thermoplastics material with a reinforcement |
DE4030478C2 (de) * | 1990-09-26 | 1999-12-16 | Alkor Gmbh | Verfahren und Vorrichtung zur Herstellung von Kraftfahrzeugteilen, Kraftfahrzeuginnenverkleidungen sowie Flugzeuginnenverkleidungen |
DE4308764A1 (de) * | 1993-03-19 | 1994-09-22 | Basf Ag | Partikelschaumstoff-Formteile auf der Basis von Olefinpolymerisaten mit verdichteter, glatter Außenhaut und Verfahren zu ihrer Herstellung |
JP2982564B2 (ja) * | 1993-06-19 | 1999-11-22 | 豊田合成株式会社 | インテグラルスキンフォームの成形方法 |
-
1997
- 1997-05-08 DE DE19719321A patent/DE19719321C2/de not_active Expired - Fee Related
-
1998
- 1998-05-06 JP JP10547735A patent/JP2000514743A/ja active Pending
- 1998-05-06 KR KR1019980710837A patent/KR20000022405A/ko not_active Application Discontinuation
- 1998-05-06 EP EP98929284A patent/EP0912314A1/de not_active Withdrawn
- 1998-05-06 BR BR9804887-2A patent/BR9804887A/pt not_active IP Right Cessation
- 1998-05-06 WO PCT/EP1998/002669 patent/WO1998050215A1/de not_active Application Discontinuation
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1239806A (en) * | 1967-12-12 | 1971-07-21 | Badische Anilin & Soda Fabrick | Production of expanded moldings from olefin polymers |
GB2007579A (en) * | 1977-10-19 | 1979-05-23 | Isobox Barbier Sa | Apparatus and Process for Moulding Thin-Walled Objects in Expanded Plastics Material |
EP0072499A1 (de) * | 1981-08-05 | 1983-02-23 | Japan Styrene Paper Corporation | Verfahren zur Herstellung geschäumter Formkörper aus Polypropylen-Harz |
JPS59179321A (ja) * | 1983-03-30 | 1984-10-11 | Nissan Motor Co Ltd | 発泡性プラスチツク製品 |
DE3330826A1 (de) * | 1983-08-26 | 1985-03-14 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von schaumstoff-formkoerpern aus polyolefinen |
FR2592610A1 (fr) * | 1986-01-03 | 1987-07-10 | Usine Applic Polystyrene Expan | Procede et dispositif pour la fabrication d'une piece de forme de matiere synthetique thermoplastique, pre-expansee. |
DE3602996A1 (de) * | 1986-01-31 | 1987-08-06 | Mitsubishi Yuka Badische | Verfahren zur herstellung eines geformten polypropylenharzprodukts aus geschaeumten polypropylenteilchen |
DE3842846A1 (de) * | 1988-12-20 | 1990-06-21 | Frigolit Gmbh | Verfahren zur herstellung von polyolefin-sandwich-formteilen |
WO1990008642A1 (en) * | 1989-02-01 | 1990-08-09 | Adfoam Pty. Limited | Method and apparatus for manufacturing articles from expandible thermo-plastic materials |
EP0477476A2 (de) * | 1990-09-26 | 1992-04-01 | Alkor Gmbh Kunststoffe | Verfahren und Vorrichtung zur Herstellung von Formteilen oder Gegenständen |
EP0485714A1 (de) * | 1990-11-16 | 1992-05-20 | Hüls Aktiengesellschaft | Steuerverfahren zum Schäumen und Sintern von Kunststoff |
EP0492201A2 (de) * | 1990-12-20 | 1992-07-01 | BASF Aktiengesellschaft | Schaumstoff-Formkörper mit verschiedenen Dichtebereichen und Verfahren zu ihrer Herstellung |
DE9312247U1 (de) * | 1993-08-17 | 1993-10-28 | E. Dittrich KG "Schlüssel"-Erzeugnisse, 28307 Bremen | Formteil für Bedienungsteile oder die Innenverkleidung von Kraftfahrzeugen |
DE9313635U1 (de) * | 1993-08-17 | 1993-11-11 | E. Dittrich KG "Schlüssel"-Erzeugnisse, 28307 Bremen | Formteil für Bedienungsteile oder die Innenverkleidung von Kraftfahrzeugen |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 8447, Derwent World Patents Index; Class A32, AN 84-291338, XP002079462 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6386579B1 (en) * | 1999-07-22 | 2002-05-14 | Breed Automotive Technology, Inc. | Steering wheel |
Also Published As
Publication number | Publication date |
---|---|
JP2000514743A (ja) | 2000-11-07 |
BR9804887A (pt) | 1999-08-31 |
KR20000022405A (ko) | 2000-04-25 |
EP0912314A1 (de) | 1999-05-06 |
DE19719321C2 (de) | 2000-12-14 |
DE19719321A1 (de) | 1998-11-12 |
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