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Foldable Car Seat

Kinematic design for a two-part foldable car seat with consideration of forces (example from the seating industry).

In this example we first guarantee the correct movements of the two parts of the seat through two syntheses for two separate mechanisms. An exact-pose synthesis is used to generate both of these partial systems, a one-bar and a four-bar linkage. After the motion design, we combine the two partial systems kinematically by adding a interlink. Subsequently, we examine the necessary manual forces for opening and closing with and without the presence of a supporting rotary spring. In a supplementary kinetostatic force analysis we examine the necessary motor torques with and without geared transmission. Lastly, a collision check for the two moving components of seat and backrest is added.