Belt Retractors TRIZ Cases

A dual blocking actuator switches the retractor gearbox for different speed and torque modes while keeping motorized seat-belt packaging compact.

A brake-triggered blocking mechanism lets one motor and gearbox handle both comfort winding and reversible pre-tensioning in tight seat space.

Sensors locate occupants and trigger airbags, gripper arms, or straps only on impact, preserving cabin freedom without seat belt fit issues.

A linked seatback tether assembly spreads rear-impact loads across the thoracic region to limit rearward occupant motion without reducing comfort.

A linked buckle and retractor mechanism automatically locks or releases the child seat belt, reducing manual adjustment while improving fit and safety.

Dynamic shoulder, lap, and thigh web retractors improve force distribution and occupant restraint during vehicle movement and seat shifts.

Predicted path overlap and vehicle approach data trigger seatbelt tensioning at the right moment to improve occupant restraint in collision risk.

A braking-triggered blocking path lets one motor switch from 1:1 winding to reduced-ratio pretightening while keeping the retractor compact.

A molded rod-shaped transfer element replaces metal balls to cut noise, weight, cost, and synchronization complexity in belt tensioners.

An inertia-triggered ball-and-gear lock lets pets move normally in vehicles, then stops leash extension during sudden deceleration.

An axially flat freewheel lets the clutch close without 360° actuator rotation, cutting retractor axial space while maintaining torque.

A spring-loaded nose and bay interface gives a ratchet wheel lever low-friction pivoting while suppressing vibration rattling.

Buckle state and webbing payout are combined to detect unbuckled or improperly worn seatbelts without continuous camera use.

A rolling mass and restrictor curb vertical-triggered seat belt locking, reducing nuisance lockups on uneven roads while preserving impact response.

A mechanically linked headrest and belt guide keeps strap position aligned during seat adjustment while avoiding bulky seat structures.

Road-curvature prediction tightens the seatbelt before a bend, giving a haptic warning that reduces lateral occupant displacement and accident risk.

Relative spool rotation engages the lock to restrict pull-out and drive emergency webbing take-up with less sensor and electromagnet dependence.

An interlocked frame and bracket shrink pretensioner packaging so movable vehicle seats can still support occupant loads during impacts.

A spring-coupled track and sliding webbing guide absorb impact energy, limit occupant loads, and reset after a crash.

A spring element biases the metal-plastic deflector joint to absorb tolerances, prevent rattling, and secure belt guidance in vehicles.

A vented rod-and-cable pretensioner redirects hot gas leakage while maintaining belt-pulling force and secure occupant restraint.

Using asymmetric mass about pivot points, this actuator triggers on rotational acceleration instead of speed, reducing unwanted activation.

A U-shaped retractor bracket absorbs side-collision loads while stiffened flanges and beads preserve fastening integrity and vibration behavior.

Coaxial reel, torsion rod, and profiled head placement reduces outer diameter, fits narrow backrests, and keeps force limiting stable.

Sensors in a split harness retainer detect disconnection and wirelessly trigger an in-vehicle audible alert to prevent unsafe restraint release.

An electrically actuated locking lever adds elastic damping and dual magnetic circuits to prevent unintended belt retractor blocking and ease mounting.

Magnetic flux and eddy currents tune trigger movement and braking intensity, giving finer control of activation speed and resistance.

A restriction weight on a V gear pivots under centrifugal force to block inertial mass displacement, preventing false end-lock states after belt take-up.

Estimates motor speed via electrical parameters to eliminate belt slack, reducing device complexity and cost.

A vehicle seat belt apparatus adjusts belt reel motor drive based on forward obstacle detection to manage restraint force during avoidance maneuvers.

A vehicle airbag suppression system adjusts deployment thresholds using seat belt retractor locking states and occupant load data.

A vehicle controller predicts collision states using camera and radar sensors to determine safety device deployment.

A seatbelt motor control system detects artificial input signals from webbing pulls to adjust settings without dedicated switches.

System uses estimated lateral acceleration to prevent unnecessary webbing tension during turns, maintaining occupant comfort.

A single operating section controls both pretensioner and vibrating unit functions within a vehicle occupant protection system.

A webbing device positions a gas supply tube on the opposite side of the belt to ensure chest bag inflation.

Spiral groove mechanism transforms linear piston motion into spool rotation, reducing packaging space while maintaining effective belt tightening.

A vehicle seatbelt control device detects power supply voltage fluctuations during engine cranking to adjust motor drive modes.

A pillar garnish recessed portion accommodates a seat belt latch, eliminating knocking noise without adding complex retention hardware.

A webbing retractor uses a rigid blocking component to prevent deformation of the resin retaining portion under load.

Placing detection sensors on a shared gear housing side reduces overall retractor dimensions while simplifying assembly line routing.

A spiral cam mechanism limits rotational displacement in seat belt retractors to control webbing payout forces.

A seatbelt retractor inertial sensor uses a vented ball nest and point-contact lever to minimize debris interference.

Deployable door portions in a segmented gas generator create a secure flow path, resolving the trade-off between installation space and switching reliability.

Upper frame motor placement reduces webbing inflection points and frictional resistance while preventing design surface bulging.

Polymer rod with recessed portion engages sprocket vanes to maintain locked position while seal member prevents gas leakage from tube.

A vehicle seat belt retractor control system uses a rolling mass and damping spring to manage locking lever engagement.

A seatbelt webbing lock preventing apparatus uses a friction spring to control flywheel rotation during retraction.

A seat-belt pretensioner applies variable tension levels based on real-time vehicle slip conditions detected by onboard sensors.

A retractor spool with an integrated clamping unit that secures webbing against unwinding.