EP0982212A1 - Dispositif pour l'introduction d'efforts dans un élément construit de fibres composites - Google Patents

Dispositif pour l'introduction d'efforts dans un élément construit de fibres composites Download PDF

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Publication number
EP0982212A1
EP0982212A1 EP98810848A EP98810848A EP0982212A1 EP 0982212 A1 EP0982212 A1 EP 0982212A1 EP 98810848 A EP98810848 A EP 98810848A EP 98810848 A EP98810848 A EP 98810848A EP 0982212 A1 EP0982212 A1 EP 0982212A1
Authority
EP
European Patent Office
Prior art keywords
force
force introduction
cover layer
fiber composite
composite construction
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.)
Withdrawn
Application number
EP98810848A
Other languages
German (de)
English (en)
Inventor
Samuel Schmid
Michael Dr.-Ing. Niedermeier
Kurt Dr. Sc.Tech. Anderegg
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.)
Inventio AG
Original Assignee
Inventio 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 Inventio AG filed Critical Inventio AG
Priority to EP98810848A priority Critical patent/EP0982212A1/fr
Publication of EP0982212A1 publication Critical patent/EP0982212A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D17/00—Construction details of vehicle bodies
    • B61D17/005—Construction details of vehicle bodies with bodies characterised by use of plastics materials

Definitions

  • the invention relates to a device for applying force into a component made in fiber composite construction Force application points consisting of an inner Top layer and one between the inner top layer and an outer cover layer arranged foam core, wherein between the inner top layer and the outer Top layer frame flanges and / or longitudinal profiles for Stiffening of the component are provided.
  • the invention seeks to remedy this.
  • the invention as characterized in claim 1, solves the problem the disadvantages of glued-in threaded bushes or inserts to avoid and create a force, by means of that fiber-compatible constructions are feasible.
  • the introduction of force according to the invention extends this Range of applications for fiber composite construction Components, whereby more rigid structures are feasible enable the construction of longer vehicles, for example.
  • the introduction of force according to the invention is for this suitable to sub-structures to each other connect.
  • Another advantage is that because of the Force transmission in frames or in stiffening Longitudinal profiles no undesirable additional weight arises. With the positive connection between Force introduction element and frame or longitudinal profile is the Fiber reinforcement in the frame and / or longitudinal profile is not interrupted and therefore not weakened. Subsequently there are no stress concentrations. So that's one greater power transmission with greater security possible. In the event of a crash, the force introduction point is not the vulnerability.
  • the breaking strength of the frame or Longitudinal profile is significantly improved and that Default risk reduced.
  • serial manufactured items are used and rational be wrapped.
  • the thread size of the Force application elements can be independent of the Frame width can be chosen, instead of high-strength Screws screws with normal quality are used can.
  • 1 to 13 is 1 in a winding process manufactured car body called.
  • a form-giving Winding mandrel 2 rotates about an axis 3 in the direction of arrow P1.
  • an inner cover layer 4 created and a core, such as a foam core 5 placed the inner cover layer 4.
  • a core such as a foam core 5 placed the inner cover layer 4.
  • the foam core 5 are Recesses in the form of tire-like grooves 6 and / or in the form of grooves 7 running in the axial direction intended.
  • the grooves 6, 7 are force introduction elements 8 inserted from the surface of the foam core 5 to enough for the inner cover layer 4.
  • a fiber strand 9 is wrapped on one Coating station 10 with, for example, resin and adhesive is wetted. The wrapping process continues as long as until the groove 6 is completely filled.
  • the axial Directional grooves 7 are also with wetted fiber strands 9 filled.
  • the fiber wrap in the tire-like groove 6 forms a loop with which the high strength values of the fibers in the circumferential direction can be used optimally.
  • the loop with flange or Frame flange 11 designated.
  • the in the axial In the direction of the groove 7 inserted layer of Fiber strands 9 will be used in the further course of the description Longitudinal profile 12 designated.
  • Frame flanges 11 and Longitudinal profiles 12 form in the example shown metal-free, over the surface of the car body 1 extending reinforcement frame.
  • Frame flanges 11 and longitudinal profiles 12 are structure-integrated elements and disrupt the exterior Appearance of the car body 1 or the component Not. According to the invention they are used to Force introduction elements 8 in a form-fitting manner from the inner cover layer 4, the frame flanges 11 or Longitudinal profiles 12, the foam core 5 and the outer Cover layer 13 existing fiber composite structure to involve.
  • the positive connection between Force transmission element 8 and frame flange 11 or L jossprofii 12 is a fiber-friendly connection because no fibers for example through holes for Threaded sleeves are cut. The full tensile strength the fibers or the fiber reinforcement are retained.
  • Variants are used, with a yoke-like Shaping and at least two force application points, for example, threads 14 are common to all variants. All variants range from the inner top layer 4 to to the outer cover layer 13 and include, for example three sides of the frame flange 11 or the longitudinal profile 12. Die The choice of variant depends on the forces to be transferred and is also a question of cost. The use of for example, four-part elements made of carbon fibers then justifiable if it is through weight savings economically justify.
  • Figures 2 to 4 show metallic designs.
  • force introduction element 8 consists of a angled flat iron with two free legs 15, which threads 14 are arranged to apply force.
  • Fig. 3 is a geometrically simple form of a Force introduction element 8 shown, which consists of a metallic cuboid with a milled groove, in which the frame flange 11 wrapped or the longitudinal profile 12 is inserted.
  • Fig. 4 shows one example high-strength steel, weight-optimized variant.
  • FIG. 5 and 6 show particularly light ones Force application elements 8 in the form of threaded inserts 16 looping loops 17.
  • the variants of FIG. 5 have power transmission capacity and 6 the disadvantage that the load-carrying loops 17 pierced and the load-bearing fibers interrupted become.
  • Fig. 7 shows a variant with two times two Loops 17 without piercing the load-bearing fibers, two loops 17 each by means of a bridge element 18 are connected. The force is perpendicular to the bridge in the central thread 14 initiated.
  • the wall thicknesses and materials of the Force application elements 8 can be chosen such that greater forces are absorbed by the force introduction element can be considered as being undamaged from the car body or component is endured. With extreme loads like The desired effect is achieved that the car body can absorb deformation energy before the force introduction elements 8 break.
  • the Formation of the frame flanges 11 or the longitudinal profiles 12 Layers of fibers laid out depending on the size of the force can move against each other. This is education interlaminar tensions prevented and a uniform Tractive force distribution achieved in all fiber layers.
  • Fig. 8 shows a car body in which the Flexural rigidity by means of a rigid profile 19 for example, has been increased in the floor area.
  • Fig. 9 shows the section A with the attachment of the profile 19th on the car body.
  • Profile 19 is in frame flanges 11 wrapped force introduction elements 8 screwed.
  • the profile 19 can also in the longitudinal direction of the car body 1st be provided and on the force introduction elements 8 of the Longitudinal profiles 12 must be screwed tight.
  • the means of Allow profile 19 to achieve additional stiffening the construction of longer vehicles.
  • FIG. 10 shows schematically the front Attaching the driver's cab 20 to the car body 1.
  • FIG. 11 shows section B of FIG. 10 with an im outermost frame flange 11 of the body 1 wrapped force introduction element 8 in metallic Cuboid design on which the driver's cab 20 is screwed tight.
  • 12 and 13 show a non-positive connection between two components of different designs.
  • One in Wrapping process manufactured car body shell 21 has along a cutting edge 22 with longitudinal profiles 12 Force application elements 8.
  • a window frame 23 with Windows 24 can be plugged onto the half-shell 21 and will by means of continuous screws 25 to the Force introduction elements 8 screwed.
  • the application of the Force application elements 8 is not on in the winding process manufactured car body 1 limited.
  • the Force transmission elements can also be used for other for example by hand lamination or injection manufactured components such as driver's cab or elevator cabins be used.
  • the Fiber reinforcements for the stiffeners 11, 12 together with the force introduction elements 8 into the laminating molds, or inserted in the grooves prepared in the core material and subsequently impregnated by hand or by resin injection.
  • the force introduction elements 8 are generally suitable for in Components made of fiber composite construction in which great forces are introduced into the fiber composite structure Need to become. Connections are also by means of Force application elements 8 of in fiber composite construction manufactured plates with straight lines Stiffeners 11 and / or longitudinal profiles 12 possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
EP98810848A 1998-08-27 1998-08-27 Dispositif pour l'introduction d'efforts dans un élément construit de fibres composites Withdrawn EP0982212A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98810848A EP0982212A1 (fr) 1998-08-27 1998-08-27 Dispositif pour l'introduction d'efforts dans un élément construit de fibres composites

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810848A EP0982212A1 (fr) 1998-08-27 1998-08-27 Dispositif pour l'introduction d'efforts dans un élément construit de fibres composites

Publications (1)

Publication Number Publication Date
EP0982212A1 true EP0982212A1 (fr) 2000-03-01

Family

ID=8236286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810848A Withdrawn EP0982212A1 (fr) 1998-08-27 1998-08-27 Dispositif pour l'introduction d'efforts dans un élément construit de fibres composites

Country Status (1)

Country Link
EP (1) EP0982212A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8915724U1 (de) * 1989-12-14 1991-05-16 Finkensiep, Gerd, 5810 Witten Leichtbauplatte, insbesondere für den Fahrzeugbau
EP0577940A1 (fr) * 1992-07-10 1994-01-12 Inventio Ag Procédé de production intégrale de structure de revêtement de caisses de véhicules
EP0687611A1 (fr) 1994-06-14 1995-12-20 Inventio Ag Méthode pour la fabrication des structures des véhicules
WO1996037400A1 (fr) * 1995-05-23 1996-11-28 Henkel Kommanditgesellschaft Auf Aktien Element de renfort structurel composite

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8915724U1 (de) * 1989-12-14 1991-05-16 Finkensiep, Gerd, 5810 Witten Leichtbauplatte, insbesondere für den Fahrzeugbau
EP0577940A1 (fr) * 1992-07-10 1994-01-12 Inventio Ag Procédé de production intégrale de structure de revêtement de caisses de véhicules
EP0687611A1 (fr) 1994-06-14 1995-12-20 Inventio Ag Méthode pour la fabrication des structures des véhicules
WO1996037400A1 (fr) * 1995-05-23 1996-11-28 Henkel Kommanditgesellschaft Auf Aktien Element de renfort structurel composite

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