Pneumatically actuated vehicle seat assemblies

Abstract

Vehicle seat assemblies including support structures having at least two supports parts coupled at an articulating joint and a pneumatic actuator system including at least one pneumatic chamber inflated and deflated to articulate the articulating joint to move one support part relative to the other or to synchronize movement of two support parts. Support structures can include a backrest coupled to a seat bottom or leg rest coupled to a seat bottom, wherein articulation of the joint causes movement of the backrest or leg rest along a non-hinged trajectory to change a sitting position of the support structure, change seat orientation, and generally improve seat comfort.

Description

Background technique [0001] Vehicle seats often include adjustable components to improve seat comfort, change seat orientation, and alter sitting posture. On an airplane, passenger seat adjustability can be set to move one or more of the backrest, seat bottom, leg rest, headrest, and armrest. Adjustability can also be provided inside the seat to adjust the lumbar and side support of the backrest. While different seats are capable of different adjustability, economy class seats are generally less adjustable than premium class seats due to the space and cost constraints associated with economy class seats . [0002] The adjustability of conventional seats is set using a system comprising mechanical actuators and rigid linkages to achieve desired motion. For example, an electromechanical actuator can be used to drive a mechanical linkage to convert the seat between upright and reclining, and in some cases between upright and full sleeper. Other systems can include hydraulic a...

AI Technical Summary

Problems solved by technology

Regardless of the type of actuator, conventional actuation systems tend to be complex, heavy, and require moving parts that are prone to wear and failure, making them undesirable in certain applications

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