US20130244004A1 - Fiber composite part of a motor vehicle, mounting part for such a fiber composite part and manufacturing method - Google Patents

Fiber composite part of a motor vehicle, mounting part for such a fiber composite part and manufacturing method Download PDF

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Publication number
US20130244004A1
US20130244004A1 US13/846,987 US201313846987A US2013244004A1 US 20130244004 A1 US20130244004 A1 US 20130244004A1 US 201313846987 A US201313846987 A US 201313846987A US 2013244004 A1 US2013244004 A1 US 2013244004A1
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US
United States
Prior art keywords
mounting part
volume
fiber composite
fibers
mounting
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
Application number
US13/846,987
Other languages
English (en)
Inventor
Thiemo Erb
Markus Brunner
Thomas Meier
Eduard Ene
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Assigned to DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT reassignment DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ENE, EDUARD, MEIER, THOMAS, BRUNNER, MARKUS, ERB, THIEMO
Publication of US20130244004A1 publication Critical patent/US20130244004A1/en
Priority to US16/598,737 priority Critical patent/US11136070B2/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
    • B62D29/048—Connections therefor, e.g. joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/20—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
    • F16B2/22—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material
    • F16B2/24—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49616—Structural member making
    • Y10T29/49622—Vehicular structural member making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness

Definitions

  • the invention relates to a mounting part for affixing a fiber composite part of a motor vehicle to at least one adjoining component of the motor vehicle. Furthermore, the invention relates to a fiber composite part, to a method for manufacturing the mounting part and to a method for manufacturing the fiber composite part.
  • Fiber composite parts made from carbon fiber reinforced or glass fiber reinforced polymers are increasingly used in motor vehicles to achieve weight reductions. However, it is necessary to connect the fiber composite parts to at least one adjoining component of the motor vehicle. Mounting parts, or inserts, incorporated in the respective fiber composite part to connect the fiber composite parts to the adjoining component. According to the prior art, these mounting parts incorporated in a fiber composite part are metallic, and usually aluminum.
  • the metallic mounting part used for affixing the fiber composite part to an adjoining component of the motor vehicle must be coated with an adhesion promoter and an anti-corrosion agent prior to being introduced into the fiber composite part. As a result, manufacturing expenses are increased.
  • Fiber composite parts used with metallic mounting parts are disclosed in WO 2011/051227 A1.
  • An object of the present invention is to provide an innovative mounting part for affixing a fiber composite part of a motor vehicle to at least one adjoining component of the motor vehicle, an innovative fiber composite part and a method for manufacturing the mounting part and the fiber composite part.
  • the invention relates to mounting parts that are incorporated or embedded in a fiber composite part for affixing the fiber composite part to an adjoining component.
  • the mounting parts of the invention are made from a fiber composite material.
  • the fiber composite mounting parts ensure an integral bond between the mounting parts and the fiber composite part.
  • the mounting part is made from a carbon fiber reinforced or a glass fiber reinforced polymer with relatively short fibers between 3 mm and 100 mm in length, and preferably between 20 mm and 80 mm in length.
  • This defined length of the relatively short fibers for the mounting part allows on the one hand the guarantee of a sufficient strength of the mounting part, and on the other hand the provision of a three-dimensional shape analogous to that of metallic mounting parts.
  • the mounting part preferably comprises between 30% by volume and 70% by volume, in particular between 40% by volume and 65% by volume, fibers and furthermore between 70% by volume and 30% by volume, in particular between 60% by volume and 35% by volume, a thermosetting polymer.
  • This composition of the mounting part of fibers and thermosetting polymer is advantageous for guaranteeing a high strength of the mounting parts.
  • the mounting part preferably is manufactured by preparing a liquid or flowable mixture of polymer and fibers.
  • the mixture then is filled into a three-dimensionally shaped mold for the mounting part.
  • the mold then is closed and the mounting part is cured for a defined period of time at a defined temperature and a defined pressure.
  • the aforementioned method enables the manufacturing of three-dimensionally shaped mounting parts with sufficient strength from a fiber composite material with simple means.
  • the term “flowable” does not mean that the mixture has to be “flowable” already at room temperature. Rather, the mixture may take the form of a sheet at room temperature and an appropriately weighed amount may be filled into the mold.
  • the mixture conforms to the three-dimensionally shaped mounting part once the mold has been closed on the basis of temperature and pressure.
  • the mounting part preferably is cured in the mold for a period of between 0.5 min and 10 min at a temperature between 100° C. and 200° C. and at a pressure of more than 100 bar.
  • the abovementioned process parameters are advantageous, with the tool preferably being heated isothermally during the curing of the mounting part.
  • FIG. 2 is a first mounting part in different perspective views.
  • FIG. 3 is a second mounting part in different perspective views.
  • the invention relates to a mounting part for affixing a fiber composite part of a motor vehicle to at least one adjoining component of the motor vehicle.
  • the mounting part is incorporated or embedded in the respective fiber composite part and is referred to as an insert.
  • the invention also relates to a fiber composite part of a motor vehicle with at least one such mounting part and to a method for manufacturing the mounting part and the fiber composite part.
  • FIG. 1 is a partial schematic cross section through a fiber composite part 10 of a motor vehicle in the region of a mounting part 11 incorporated or embedded in the fiber composite part 10 .
  • the mounting part 11 is provided for affixing the fiber composite part 10 to at least one adjoining component.
  • a recess 12 with an internal thread 13 is cut into the mounting part 11 to allow a direct screw connection of the fiber composite part 10 via the mounting part 11 to an adjoining component.
  • an internally threaded bush can be inserted into the recess 12 so that the fiber composite part 11 can be screwed indirectly via the threaded bush to an adjoining component.
  • the mounting part 11 incorporated in the fiber composite part 10 is a three-dimensionally shaped structure with ribs, and/or webs and/or protrusions and/or depressions.
  • FIGS. 2 and 3 show in different perspective views examples of three-dimensionally shaped mounting parts 11 ′ and 11 ′′ formed with ribs 14 , webs 15 , protrusions 16 and/or depressions 17 .
  • the mounting parts 11 , 11 ′ or 11 ′′ for a fiber composite part are made from a fiber composite material, namely from a carbon fiber reinforced or a glass fiber reinforced polymer with relatively short fibers.
  • the carbon fiber reinforced or glass fiber reinforced polymer is preferably a thermosetting polymer, in particular an epoxy resin or a vinyl-ester resin or polyurethane.
  • the relatively short fibers of the mounting part 11 , 11 ′ or 11 ′′ have a length of between 3 mm and 100 mm.
  • the length of the relatively short fibers of the mounting part 11 , 11 ′ or 11 ′′ is between 20 mm and 80 mm.
  • the mounting part 11 , 11 ′ or 11 ′′ may have fibers of exclusively one length, such as short fibers exclusively of a length of 25 mm or 70 mm or 75 mm.
  • the respective mounting part 11 , 11 ′ or 11 ′′ may have relatively short fibers of at least two different lengths, for example first fibers of a length of 25 mm and second fibers of a length of 50 mm.
  • the mounting part 11 , 11 ′ or 11 ′′ has first fibers of a length of 10 mm and second fibers of a length of 75 mm.
  • the use of fibers of different lengths for the mounting part advantageously enables both a sufficient strength of the respective mounting part 11 , 11 ′ and 11 ′′ and any desired three-dimensional shaping of the part.
  • the respective mounting part 11 , 11 ′ or 11 ′′ preferably has between 30% by volume and 70% by volume fibers and between 70% by volume and 30% by volume thermosetting polymer.
  • the mounting part 11 , 11 ′ or 11 ′′ preferably comprises between 40% by volume and 65% by volume fibers and between 60% by volume and 35% by volume thermosetting polymer, in particular epoxy resin.
  • the mounting parts 11 , 11 ′ or 11 ′′ for a fiber composite part 10 of a motor vehicle themselves uniquely are made from a fiber composite material.
  • relatively short fibers in a defined mixing ratio with a polymer are used in the respective mounting part 11 , 11 ′ or 11 ′′.
  • three-dimensionally shaped mounting parts made from a fiber composite material are provided with a three-dimensional shape typically associated with metallic mounting parts and with a sufficiently high strength.
  • the fiber composite parts 10 and the mounting parts 11 , 11 ′ or 11 ′′ incorporated therein preferably are made from a fiber composite material, with identical fiber material of different lengths and with an identical polymer material, such as thermosetting polymer, being used in the fiber composite part 10 and in the mounting part 11 , 11 ′ or 11 ′′.
  • the fibers of the fiber composite part 10 are relatively long continuous fibers, namely relatively long carbon fibers or glass fibers.
  • the manufacturing of the mounting part 11 , 11 ′ or 11 ′′ proceeds bu preparing a liquid, in particular a viscous or flowable mixture of polymer and fibers.
  • This mixture preferably comprises between 30% by volume and 70% by volume fibers and the rest polymer, in particular thermosetting polymer.
  • the preferred mixture comprises between 40% by volume and 65% volume fibers and the rest polymer, such as epoxy resin.
  • This mixture is weighed and the weighed mixture is filled into a three-dimensionally shaped mold for the mounting part.
  • the mold for the mounting part 11 , 11 ′ or 11 ′′ then is closed and the mounting part is cured in a molding process with a heated mold.
  • the curing in the mold takes place at a defined temperature and at a defined pressure over a defined period of time.
  • the curing of the mounting part 11 , 11 ′ or 11 ′′ takes place in an isothermically heated mold at a temperature between 100° C. and 200° C. and at a pressure of more than 100 bar over a period of between 0.5 minutes, that is to say 30 seconds, and 10 minutes.
  • the manufactured mounting parts 11 , 11 ′ or 11 ′′ are placed in an uncured fiber composite matrix to form a semi-finished product.
  • This semi-finished product may be a so-called prepreg of fibers and thermosetting polymer or a dry semi-finished product consisting of only fibers, into which, subsequent to the positioning of the mounting parts, thermosetting polymer, in particular epoxy resin, is injected.
  • the fiber composite matrix with the incorporated or embedded and already cured mounting parts 11 , 11 ′ or 11 ′′ then is cured, and the mounting parts 11 , 11 ′ or 11 ′′ forming an intimate bond with the identical polymer material of the fiber composite matrix to form a composite part 10 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Moulding By Coating Moulds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Body Structure For Vehicles (AREA)
  • Reinforced Plastic Materials (AREA)
US13/846,987 2012-03-19 2013-03-19 Fiber composite part of a motor vehicle, mounting part for such a fiber composite part and manufacturing method Abandoned US20130244004A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/598,737 US11136070B2 (en) 2012-03-19 2019-10-10 Fiber composite part of a motor vehicle, mounting part for such a fiber composite part and manufacturing method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012102290.9 2012-03-19
DE102012102290A DE102012102290A1 (de) 2012-03-19 2012-03-19 Faserverbundbauteil eines Kraftfahrzeugs, Monatageteil für ein solches Faserverbundbauteil und Herstellverfahren

Related Child Applications (1)

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US16/598,737 Division US11136070B2 (en) 2012-03-19 2019-10-10 Fiber composite part of a motor vehicle, mounting part for such a fiber composite part and manufacturing method

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US20130244004A1 true US20130244004A1 (en) 2013-09-19

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US16/598,737 Active 2033-10-19 US11136070B2 (en) 2012-03-19 2019-10-10 Fiber composite part of a motor vehicle, mounting part for such a fiber composite part and manufacturing method

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US (2) US20130244004A1 (de)
JP (1) JP5869508B2 (de)
KR (1) KR20130106313A (de)
DE (1) DE102012102290A1 (de)
IT (1) ITMI20130418A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3076804A1 (fr) * 2018-01-15 2019-07-19 Faurecia Automotive Composites Piece structurelle pour caisse en blanc de vehicule et procede de fabrication associe
US10906596B2 (en) 2018-01-09 2021-02-02 Faurecia Automotive Composites Structural part of a body in white of a vehicle and associated manufacturing method

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KR102131100B1 (ko) * 2019-04-23 2020-07-07 주식회사 넥스컴스 고강도·고강성 스켈레톤을 적용한 자동차 부품 제조방법

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US4044188A (en) * 1972-10-02 1977-08-23 Allied Chemical Corporation Stampable thermoplastic sheet reinforced with multilength fiber
US7059815B2 (en) * 2001-10-04 2006-06-13 Newfrey Llc Elastic fastener
US7976928B2 (en) * 2005-06-16 2011-07-12 Daikyonishikawa Corporation Resin molded article and molding method thereof
US20110015060A1 (en) * 2008-03-28 2011-01-20 Dalian Institute Of Chemical Physics, Chinese Academy Of Science Catalyst for Desulfurization and Deodorization of Gasoline and Method for Preparation of the Same and Use Thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10906596B2 (en) 2018-01-09 2021-02-02 Faurecia Automotive Composites Structural part of a body in white of a vehicle and associated manufacturing method
FR3076804A1 (fr) * 2018-01-15 2019-07-19 Faurecia Automotive Composites Piece structurelle pour caisse en blanc de vehicule et procede de fabrication associe

Also Published As

Publication number Publication date
US20200102023A1 (en) 2020-04-02
JP2013193458A (ja) 2013-09-30
US11136070B2 (en) 2021-10-05
KR20130106313A (ko) 2013-09-27
ITMI20130418A1 (it) 2013-09-20
DE102012102290A1 (de) 2013-09-19
JP5869508B2 (ja) 2016-02-24

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