BMW patents frame with screw-in composite reinforcements

The chassis patented by BMW is similar to that of the supersport S1000RR. The innovation lies in the composition of composite panels from different materials (carbon fiber, aramid and synthetic composite) that are screwed to the structure to change the resistance.

 
If we are able to modify the torsional and bending resistances of a chassis, we can also add parameters useful for the cycling tuning. Depending on the tires used and the type of circuit, it is ideal to have different flexibility of the chassis structure depending on the need

In many sports frames, it is possible to intervene on some measures through adjustments or the replacement of some parts. For example the:

  • adjustment of the inclination of the steering rod
  • height of the pivot of the swingarm
  • geometries of the rear suspension and the front axle
However, in order to operate on the resistances of the frame or swingarm, it is necessary to act in a more radical and often not functional way. In the highest competitions, it is normal to notice carbon fiber or aluminum sheet reinforcement handkerchiefs that can be added or removed, but these are generally glued or welded.
 
There are studies that go much further, but these are studies far from having found a practical application.

 

BMW has filed a patent that tries to solve the problem more easily
The main goal is to use a traditional frame built of sheet metal and other aluminum alloy parts, a chassis with a low weight to which to add some reinforcements according to the need. It is a complex and expensive technology that offers a certain basic versatility. In this case, it has taken as a model a chassis very similar to that of the S1000RR.
 
These reinforcements are screwed. In this way they can ben : 
  1. assembled or replaced quickly
  2. sized differently
  3. built with different materials

BMW mentions carbon fiber, but the composites can also be aramid-based, ceramic, polyamide and more.
 

About the patent
The patent concerns reinforcements in the attachment area of the rear auxiliary frame. In this case, the advantage would be in having a single structure that can be adapted to different types of motion.
The same concept is also applicable for the steering tube, for the attacks of the engine, or the fulcrum of the swingarm.
 

SUBSCRIBE NOW
to our quarterly newsletter

to stay updated on news,
technologies and activities 

 


Leggi anche

The European CIRCE project (Circular Economy Model for Carbon Fiber Prepregs), born from the collaboration of five Italian companies and financed under the LIFE program (LIFE ENV/IT/00155), has studied how to reuse the scraps of carbon fiber prepreg to produce structural components such as car parts, brake discs, toe caps for safety shoes and more….

Leggi tutto…

Il progetto europeo CIRCE (Circular Economy Model for Carbon Fibre Prepregs), nato dalla collaborazione di cinque aziende italiane e finanziato nell’ambito del programma LIFE (LIFE ENV/IT/00155), ha studiato come riutilizzare gli sfridi dei prepreg in fibra di carbonio per produrre componenti strutturali come parti auto, dischi freno, puntali per scarpe antinfortunistiche e non solo….

Leggi tutto…

The use of CFRP can significantly reduce CO2 emissions in transportation, including airplanes and automobiles. However, a lot of CO2s is released during the production of CFRP, and most used and waste materials end up in landfills. With the growing market of CFRP, there is a strong demand for the development of recycling technologies. Toyota Industries have developed technology that aligns recycled carbon fibers from used CFRP into a uniform, consistent yarn, adapting its well-established cotton spinning methods to carbon fiber….

Leggi tutto…

Spherecube, una startup e spinoff dell’Università Politecnica delle Marche, propone di risolvere i problemi legati alla produzione tradizionale dei materiali compositi alto performanti, grazie ad un sistema brevettato di stampa 3D per compositi a base termoindurente e rinforzo continuo, che permette di ridurre gli scarti di produzione, di eliminare i materiali consumabili, di accorciare il tempo di curing e di azzerare gli sfridi di materiale….

Leggi tutto…

BASF, Flex-N-Gate, Toyota and L&L Products were named finalists for the 2023 JEC Innovation Award in the Automobile and Road Transportation – Design Part category with the composite seatback design of the 2022 Toyota Tundra. The goal was to make the vehicle as light and efficient as possible, but also cost-effective, with flexible design and more storage space for the end user….

Leggi tutto…