The topic of this thesis is the development of belt tensioner for bicycle with rear suspension. The development was started with a short introduction and presentation of the problem that needs to be solved. An analysis of patents and existing products on the market was then carried out. By means of the functional decomposition and the morphological matrix that follows from it – three concepts of belt tensioners for bicycle with rear suspension were generated. Based on the evaluation, a concept was chosen for further design development. After the design development, the belt tensioner model was controlled by numerical analysis of the finite element method. Also, a dynamic calculation of the safety of the bearing and tensioner body was carried out. After satisfying the engineering analysis, the topological optimization process was carried out over the adopted model. Finally, the final evaluations of the new model were performed using the previously mentioned methods. The final solution was discussed and possible directions for further development of the belt tensioner were proposed.
