Reclining Chairs TRIZ Cases

See how a pre-assembled cartridge with integral pivot arm, back connection, and leaf spring red

See how a rail-and-tilt mechanism translates the base frame forward during recline, enabling fu

See how a quasi-parallel deflecting system uses inverted pivot geometry to stabilize seat frame

See how a curvilinear slider guide replaces circular-arc paths to maintain consistent seat elev

See how a simplified recliner mechanism uses a linear actuator to eliminate seat-drop and over-

See how a U-shaped base support integrates synchronous backrest-seat deflection with height adj

See how loop-shaped elastic elements replace articulated rods to synchronize seat and backrest

See how a one-piece leaf spring connecting element maintains seat-backrest opening angle to pre

See how a multi-link footrest mechanism uses seat motion to pivot between compact storage below

See how a cable-based motion transmission converts rotational lever input into axial locking-pi

See how dual synchronized actuators enable independent back frame adjustment in lift recliners

See how a lever-coupled backrest and seat surface move in opposite directions to counteract off

See how a multi-link metal-to-floor mechanism achieves 18-26 degree seat pitch and 4-7 degree o

See how a rotatable positioning tube with toothed engagement allows chair seat adjustment witho

See how pre-aligned swing arms with mechanical bushings eliminate manual alignment steps, enabl

See how pivot-linked seat, drive, and yoke frames enable harmonious recliner motion with virtua

See how a pivoting chair back and seat move together on glide tracks, while retractable ganging

A ratchet and pawl with selective disengagement lets chair recline tension change quickly with few turns while preventing handle back action.

A bendable seat support plate uses user weight to raise backrest restoring force while improving seat-back opening and thigh comfort.

A spring-biased slot and pin layout keeps the armrest stable under load while allowing lateral, rotational, and vertical adjustment without unlocking.

A second spring secures the leg rest in its stowed position without hindering deployment, even with heavy padding changes.

A dual tilting and reclining linkage lets a healthcare chair raise feet above the heart while preserving comfort and multi-position support.

A spring-and-plunger track hidden in the seat pan delivers smooth syncro-tilt recline without bulky under-seat hardware or snagging controls.

A dual-axis control lever adjusts a telescopic footrest linkage to improve comfort, simplify motion, and avoid ground collision.

A linked seat-frame mechanism tilts rearward and moves forward during recline, allowing full seatback motion close to a wall.

Adjusting the spring angle instead of preload lets a synchronous chair mechanism match user weight quickly with less effort and smoother sitting.

A triangular steering block shifts the force accumulator angle to match user weight without stiff spring preload adjustment.

A flange-and-curved-member coupling speeds chair preassembly without tools while keeping secure pivoting, tolerance compensation, and durability.

A covered spiral spring in a furniture pivot fitting holds position against upholstery tension while preventing pinching and simplifying assembly.

A movable fulcrum and cam adjust chair swivel resistance across user weights without increasing spring preload, bulk, or complexity.

A threaded rod synchronizes two adjustment carriages to set and lock chair seat inclination with simpler control and reliable positioning.

Linear guide slots coordinate seat and back motion to avoid shirt shear, preserve lumbar support, and keep the chair stable during recline.

Oval holes and rolling axes let a swivel chair self-adjust tilt pressure for users of different weights with a simple mechanism.

A fixed pelvic support paired with longitudinal seat adjustment maintains pelvis pressure and upright posture across different user sizes.

A self-aligning pendulum bearing and rack lock let the seat and backrest tilt dynamically while holding a chosen sitting position.

A linked seat and backrest mechanism shifts from sitting to resting in one action, improving comfort and simplifying sofa adjustment.

Elastic supporting arms pull the front seat rearward during recline, adapting seat comfort to different body weights without complex spring mechanisms.

A coordinated seat-backrest linkage moves the seat forward and upward during recline to improve lying comfort while keeping the chair stable.

A backrest-linked lock deactivates seat forward tilt during recline, reducing lumbar strain while preserving upright sitting posture.

A pivoting tab-and-bracket linkage replaces sliding guides to cut wear and enable near-parallel leg rest stowage with stable seat positioning.

A pivotable lever varies active lever length to set chair backrest restoring force with less effort and lower installation height.

A shuttle, retention stops, and self-weighing preload let one chair mechanism deliver multi-position tilt limits and user-specific tension.

Grouped pivot links create a virtual pivot that keeps seat lift and back recline balanced across different occupant weights.

Discrete aperture pairs let seatback links lock at 1-4° offsets, correcting multi-section furniture misalignment from tolerance stack-up.

A threaded rod and dual spring linkage balance chair back tilt forces, cutting adjustment effort while reducing jamming and spring fatigue.