US20050097853A1 - Laminated structural members for vehicles - Google Patents
Laminated structural members for vehicles Download PDFInfo
- Publication number
- US20050097853A1 US20050097853A1 US10/913,268 US91326804A US2005097853A1 US 20050097853 A1 US20050097853 A1 US 20050097853A1 US 91326804 A US91326804 A US 91326804A US 2005097853 A1 US2005097853 A1 US 2005097853A1
- Authority
- US
- United States
- Prior art keywords
- structural member
- laminate
- metal sheets
- forming
- hollow
- 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.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/082—Engine compartments
- B62D25/084—Radiator supports
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
- E04C2003/043—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0447—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section circular- or oval-shaped
Definitions
- the present invention generally relates to structural members for use in vehicles having dampened noise and vibration characteristics. More specifically, the invention relates to methods for forming laminated tubular components for use as structural members in vehicles, and products of such methods.
- structural members with high strength to weight ratios. This is particularly true in the automotive industry where designers constantly strive to lower the weight of automobiles. In the result, a number of attempts have been made to reduce the weight of various structural members without affecting the strength and integrity of such components.
- These structural members include pillars (e.g. windshield pillars and centre pillars), rockers, support beams, drive shafts, side impact beams, bumpers, and crossmembers.
- the desire to reduce the weight of vehicles stems from a drive to increase vehicle fuel efficiency. To achieve this goal, many of the above structural components have been formed as hollow members.
- U.S. Pat. Nos. 4,506,188 and 4,744,539 teach methods for dampening vibration in automobiles using resilient components.
- the following U.S. patents teach laminated metal sheets that can be used in constructing automobiles etc. and which serve to dampen vibration and/or noise: U.S. Pat. Nos. 4,678,707; 4,851,271; and, 5,338,599. The contents of the above patents are incorporated herein by reference.
- U.S. publication No. 2002/0178584 discloses a composite laminate structure to provide structural components having increased stiffness and reduced weight.
- an expandable foam layer is laminated to a surface of an insert forming the structural member.
- the process to produce such component is relatively complicated and time consuming.
- the present invention provides a hollow structural member for an automobile having a double wall formed from a laminate of two metal sheets.
- the present invention provides a method for forming a hollow structural member for an automobile comprising:
- FIG. 1 is perspective view of a typical vehicle cross member.
- the present invention provides a structural member or component for automobiles and the like.
- An example of one such member, an automobile frame crossmember is illustrated in FIG. 1 .
- such member is generally hollow and is formed into a desired three-dimensional shape.
- Persons skilled in the art will understand that the final shape of the cross member will depend on its location on the vehicle frame and the type of cross member (i.e. a crossmember for supporting the vehicle's radiator, a front or rear suspension cross member etc.).
- the crossmember of FIG. 1 has the shape of crossmembers commonly known.
- the crossmember is formed from a tube having a double wall or laminate construction.
- the tube is formed from, for example, a laminate of two metal sheets that are joined together.
- the sheets may be affixed to one another directly or with a resin or polymer sheet provided there between.
- the above-mentioned prior art references teach laminate sheets that are designed for vibration dampening.
- One such product is commercially available under the name Quiet SteelTM, which is sold by MSC Laminates and Composites Inc (Elk Grove Village, Ill., USA).
- This product comprises a three layer laminate having a non-metal sheet sandwiched between two metal sheets.
- Such commercially available laminates can be used in the present invention.
- a laminate of two metal sheets without a centre, non-metal layer may also be used.
- a laminate sheet (as described above) is provided, the sheet having sound and/or vibration dampening characteristics.
- the sheet is formed into a tube, as is commonly known in the art. Once made as a tube, the component is then formed into the desired 3-D shape. Such forming can be accomplished by any known means such as bending, crimping, hydroforming or any combination thereof.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Composite Materials (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Laminated Bodies (AREA)
Abstract
Description
- 1. Field of the Invention
- The present invention generally relates to structural members for use in vehicles having dampened noise and vibration characteristics. More specifically, the invention relates to methods for forming laminated tubular components for use as structural members in vehicles, and products of such methods.
- 2. Description of the Prior Art
- For various applications, there is a high desire for structural members with high strength to weight ratios. This is particularly true in the automotive industry where designers constantly strive to lower the weight of automobiles. In the result, a number of attempts have been made to reduce the weight of various structural members without affecting the strength and integrity of such components. These structural members include pillars (e.g. windshield pillars and centre pillars), rockers, support beams, drive shafts, side impact beams, bumpers, and crossmembers. The desire to reduce the weight of vehicles stems from a drive to increase vehicle fuel efficiency. To achieve this goal, many of the above structural components have been formed as hollow members.
- Although providing reduced weight, the stiffness of these components is greatly reduced, thereby resulting in increased vibration and noise. One solution to this problem has been to use hollow components filled with expandable foam, such as high-density plastic foam. Although such foam increases the stiffness of the hollow structural member, it still results in an increase in the weight of the component. Moreover, the filling of the hollow component with foam has associated with it various disadvantages. One of these disadvantages is the requirement of having at least one end of the component to remain open or to provide filling holes along the length of the component. Since most tubular members are flattened at their ends, the latter route is normally taken. However, adding holes to the members increases the production time and, therefore cost, of the product as well as leading to a reduction in the structural integrity of the component.
- U.S. Pat. Nos. 4,506,188 and 4,744,539 teach methods for dampening vibration in automobiles using resilient components. The following U.S. patents teach laminated metal sheets that can be used in constructing automobiles etc. and which serve to dampen vibration and/or noise: U.S. Pat. Nos. 4,678,707; 4,851,271; and, 5,338,599. The contents of the above patents are incorporated herein by reference.
- U.S. publication No. 2002/0178584 discloses a composite laminate structure to provide structural components having increased stiffness and reduced weight. In this reference, an expandable foam layer is laminated to a surface of an insert forming the structural member. However, the process to produce such component is relatively complicated and time consuming.
- There exists a need for an improved means of fabricating structural components with high strength to weight ratios.
- In one embodiment, the present invention provides a hollow structural member for an automobile having a double wall formed from a laminate of two metal sheets.
- In another embodiment, the present invention provides a method for forming a hollow structural member for an automobile comprising:
-
- a) providing a hollow tube having a double wall comprising a laminate of two metal sheets;
- b) forming the tube into said structural member.
- These and other features of the preferred embodiments of the invention will become more apparent in the following detailed description in which reference is made to the appended drawings wherein:
-
FIG. 1 is perspective view of a typical vehicle cross member. - In one embodiment, the present invention provides a structural member or component for automobiles and the like. An example of one such member, an automobile frame crossmember is illustrated in
FIG. 1 . As can be seen, such member is generally hollow and is formed into a desired three-dimensional shape. Persons skilled in the art will understand that the final shape of the cross member will depend on its location on the vehicle frame and the type of cross member (i.e. a crossmember for supporting the vehicle's radiator, a front or rear suspension cross member etc.). - In accordance with the invention, the crossmember of
FIG. 1 has the shape of crossmembers commonly known. However, the crossmember is formed from a tube having a double wall or laminate construction. The tube is formed from, for example, a laminate of two metal sheets that are joined together. The sheets may be affixed to one another directly or with a resin or polymer sheet provided there between. The above-mentioned prior art references teach laminate sheets that are designed for vibration dampening. One such product is commercially available under the name Quiet Steel™, which is sold by MSC Laminates and Composites Inc (Elk Grove Village, Ill., USA). This product comprises a three layer laminate having a non-metal sheet sandwiched between two metal sheets. Such commercially available laminates can be used in the present invention. Further, a laminate of two metal sheets without a centre, non-metal layer may also be used. - In the initial step, a laminate sheet (as described above) is provided, the sheet having sound and/or vibration dampening characteristics. The sheet is formed into a tube, as is commonly known in the art. Once made as a tube, the component is then formed into the desired 3-D shape. Such forming can be accomplished by any known means such as bending, crimping, hydroforming or any combination thereof.
- It has been found that components formed in the above manner are characterized with greatly improved sound and/or vibration dampening.
- The above description has been focussed on vehicular crossmembers. However, it will be apparent to persons skilled in the art the above method can be used to form various other structural components, particularly those for vehicles, to achieve the same qualities.
- Although the invention has been described with reference to certain specific embodiments, various modifications thereof will be apparent to those skilled in the art without departing from the spirit and scope of the invention as outlined in the claims appended hereto.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/913,268 US20050097853A1 (en) | 2003-08-06 | 2004-08-06 | Laminated structural members for vehicles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US49281703P | 2003-08-06 | 2003-08-06 | |
US10/913,268 US20050097853A1 (en) | 2003-08-06 | 2004-08-06 | Laminated structural members for vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050097853A1 true US20050097853A1 (en) | 2005-05-12 |
Family
ID=34135161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/913,268 Abandoned US20050097853A1 (en) | 2003-08-06 | 2004-08-06 | Laminated structural members for vehicles |
Country Status (2)
Country | Link |
---|---|
US (1) | US20050097853A1 (en) |
CA (1) | CA2476808A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2353892A1 (en) * | 2010-01-30 | 2011-08-10 | WESTFALIA - Automotive GmbH | Support component of a trailer coupling or a load bearer |
Citations (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4009063A (en) * | 1970-09-22 | 1977-02-22 | Insituform (Pipes And Structures) Limited | Method of lining a pipe |
US4506188A (en) * | 1982-11-24 | 1985-03-19 | North American Philips Consumer Electronics Corp. | Laminated metallic means for dampening internal CRT vibrations |
US4678707A (en) * | 1984-06-29 | 1987-07-07 | Kawasaki Steel Corporation | Vibration damping composite laminate |
US4742899A (en) * | 1985-05-13 | 1988-05-10 | Ford Motor Company | Fiber reinforced tubular component |
US4744539A (en) * | 1987-01-21 | 1988-05-17 | Mack Trucks, Inc. | Vehicle mounting arrangement |
US4851271A (en) * | 1987-10-01 | 1989-07-25 | Soundwich Incorporated | Sound dampened automotive enclosure such as an oil pan |
US4976490A (en) * | 1988-10-05 | 1990-12-11 | Ford Motor Company | Reinforced composite structure |
US5030490A (en) * | 1988-12-09 | 1991-07-09 | Tew Inc. | Viscoelastic damping structures and related manufacturing method |
US5131714A (en) * | 1991-04-11 | 1992-07-21 | Evans Body Works Inc. | General delivery load carrying vehicle |
US5158162A (en) * | 1989-09-15 | 1992-10-27 | Westinghouse Electric Corp. | Tube vibration dampener and stiffener apparatus and method |
US5203435A (en) * | 1990-08-31 | 1993-04-20 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Composite passive damping struts for large precision structures |
US5338599A (en) * | 1991-11-26 | 1994-08-16 | The United States Of America As Represented By The Secretary Of The Navy | Vibration-damping structural component |
US5667204A (en) * | 1995-06-26 | 1997-09-16 | Aesop, Inc. | Slit-tube replicated in-place constrained layer damper and method |
US5794398A (en) * | 1992-08-25 | 1998-08-18 | Kaehler; Klaus | Framework with hollow members process for producing the same and its use |
US5838599A (en) * | 1996-09-13 | 1998-11-17 | Measurex Corporation | Method and apparatus for nonlinear exponential filtering of signals |
US5914163A (en) * | 1997-10-10 | 1999-06-22 | General Motors Corporation | Reduced crush initiation force composite tube |
US5941597A (en) * | 1994-05-24 | 1999-08-24 | Honda Giken Kogyo Kabushiki Kaisha | Structural member of vehicle |
US6116389A (en) * | 1995-08-07 | 2000-09-12 | Quality Research, Development & Consulting, Inc. | Apparatus and method for confinement and damping of vibration energy |
US6148581A (en) * | 1997-04-22 | 2000-11-21 | Dr. Ing. H.C.F. Porsche Ag | Internal high pressure formed nodal connection element for a frame construction, and method of making same |
US6272809B1 (en) * | 1998-09-09 | 2001-08-14 | Henkel Corporation | Three dimensional laminate beam structure |
US20020006523A1 (en) * | 2000-07-07 | 2002-01-17 | Obeshaw Dale Francis | Structural members containing vibration damping mechanisms and methods for making the same |
US20020148273A1 (en) * | 2001-04-12 | 2002-10-17 | Mckinney John L. | Process of bending laminated metal sheet |
US6471285B1 (en) * | 2000-09-29 | 2002-10-29 | L&L Products, Inc. | Hydroform structural reinforcement system |
US20020178584A1 (en) * | 1994-05-19 | 2002-12-05 | Wycech Joseph S. | Composite laminate automotive structures |
US6722037B2 (en) * | 2001-12-06 | 2004-04-20 | Shape Corporation | Variable thickness tubular doorbeam |
US20040253453A1 (en) * | 2003-06-11 | 2004-12-16 | Sika Corporation | Constrained layer damper |
US20060169341A1 (en) * | 2005-02-01 | 2006-08-03 | Material Sciences Corporation | Internally damped laminated tube |
-
2004
- 2004-08-06 US US10/913,268 patent/US20050097853A1/en not_active Abandoned
- 2004-08-06 CA CA002476808A patent/CA2476808A1/en not_active Abandoned
Patent Citations (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4009063A (en) * | 1970-09-22 | 1977-02-22 | Insituform (Pipes And Structures) Limited | Method of lining a pipe |
US4506188A (en) * | 1982-11-24 | 1985-03-19 | North American Philips Consumer Electronics Corp. | Laminated metallic means for dampening internal CRT vibrations |
US4678707A (en) * | 1984-06-29 | 1987-07-07 | Kawasaki Steel Corporation | Vibration damping composite laminate |
US4742899A (en) * | 1985-05-13 | 1988-05-10 | Ford Motor Company | Fiber reinforced tubular component |
US4744539A (en) * | 1987-01-21 | 1988-05-17 | Mack Trucks, Inc. | Vehicle mounting arrangement |
US4851271A (en) * | 1987-10-01 | 1989-07-25 | Soundwich Incorporated | Sound dampened automotive enclosure such as an oil pan |
US4976490A (en) * | 1988-10-05 | 1990-12-11 | Ford Motor Company | Reinforced composite structure |
US5030490A (en) * | 1988-12-09 | 1991-07-09 | Tew Inc. | Viscoelastic damping structures and related manufacturing method |
US5158162A (en) * | 1989-09-15 | 1992-10-27 | Westinghouse Electric Corp. | Tube vibration dampener and stiffener apparatus and method |
US5203435A (en) * | 1990-08-31 | 1993-04-20 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Composite passive damping struts for large precision structures |
US5131714A (en) * | 1991-04-11 | 1992-07-21 | Evans Body Works Inc. | General delivery load carrying vehicle |
US5338599A (en) * | 1991-11-26 | 1994-08-16 | The United States Of America As Represented By The Secretary Of The Navy | Vibration-damping structural component |
US5794398A (en) * | 1992-08-25 | 1998-08-18 | Kaehler; Klaus | Framework with hollow members process for producing the same and its use |
US20020178584A1 (en) * | 1994-05-19 | 2002-12-05 | Wycech Joseph S. | Composite laminate automotive structures |
US5941597A (en) * | 1994-05-24 | 1999-08-24 | Honda Giken Kogyo Kabushiki Kaisha | Structural member of vehicle |
US5667204A (en) * | 1995-06-26 | 1997-09-16 | Aesop, Inc. | Slit-tube replicated in-place constrained layer damper and method |
US6116389A (en) * | 1995-08-07 | 2000-09-12 | Quality Research, Development & Consulting, Inc. | Apparatus and method for confinement and damping of vibration energy |
US5838599A (en) * | 1996-09-13 | 1998-11-17 | Measurex Corporation | Method and apparatus for nonlinear exponential filtering of signals |
US6148581A (en) * | 1997-04-22 | 2000-11-21 | Dr. Ing. H.C.F. Porsche Ag | Internal high pressure formed nodal connection element for a frame construction, and method of making same |
US5914163A (en) * | 1997-10-10 | 1999-06-22 | General Motors Corporation | Reduced crush initiation force composite tube |
US6272809B1 (en) * | 1998-09-09 | 2001-08-14 | Henkel Corporation | Three dimensional laminate beam structure |
US20020006523A1 (en) * | 2000-07-07 | 2002-01-17 | Obeshaw Dale Francis | Structural members containing vibration damping mechanisms and methods for making the same |
US6471285B1 (en) * | 2000-09-29 | 2002-10-29 | L&L Products, Inc. | Hydroform structural reinforcement system |
US20020148273A1 (en) * | 2001-04-12 | 2002-10-17 | Mckinney John L. | Process of bending laminated metal sheet |
US6722037B2 (en) * | 2001-12-06 | 2004-04-20 | Shape Corporation | Variable thickness tubular doorbeam |
US20040253453A1 (en) * | 2003-06-11 | 2004-12-16 | Sika Corporation | Constrained layer damper |
US20060169341A1 (en) * | 2005-02-01 | 2006-08-03 | Material Sciences Corporation | Internally damped laminated tube |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2353892A1 (en) * | 2010-01-30 | 2011-08-10 | WESTFALIA - Automotive GmbH | Support component of a trailer coupling or a load bearer |
Also Published As
Publication number | Publication date |
---|---|
CA2476808A1 (en) | 2005-02-06 |
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Legal Events
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AS | Assignment |
Owner name: COPPERWELD CANADA INC., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VERSOLATTO, LIVIO D.;REEL/FRAME:015250/0065 Effective date: 20040804 |
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AS | Assignment |
Owner name: COMERICA BANK, MICHIGAN Free format text: SECURITY AGREEMENT;ASSIGNORS:COPPERWELD HOLDING COMPANY;COPPERWELD CORPORATION;CANADA HOLDING CORP.;AND OTHERS;REEL/FRAME:016621/0879 Effective date: 20051003 |
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Owner name: DOFASCO TUBULAR PRODUCTS INC., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:COPPERWELD CANADA INC.;REEL/FRAME:017065/0522 Effective date: 20051003 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |