Elastic Chair Seat and Backrest Panels Without Tilt Mechanisms

The patent replaces complex mechanical weight-activated mechanisms with a purely elastic deformation system. The seat and backrest panels are made of elastic material that naturally deforms in response to applied forces (user weight and backward thrust), eliminating the need for articulated mechanisms, synchronizing devices, and tilting mechanisms while maintaining adaptability to user characteristics

The patent changes the physical state of the seat and backrest from rigid to elastically deformable. By selecting appropriate elastic materials and designing the panels with specific stiffness characteristics, the system achieves continuous adaptation to varying loads without mechanical adjustments, resolving the contradiction between adaptability and structural simplicity

The patent employs elastic panels made of molded plastic material that function as flexible shells. These panels are designed with optimized thickness and material properties to achieve significant elastic deformation capability while maintaining structural integrity. The panels can deform substantially in response to user weight and thrust, overcoming the limited deformation of fabric sheets while keeping the structure simple and cost-effective

The patent uses composite construction combining elastic molded plastic material for the panels with a supporting metal frame. This composite approach allows the panels to achieve high elastic deformation capability while the frame provides necessary structural support, resolving the contradiction between simplicity and deformation capability