Belt Retractors TRIZ Cases

A webbing take-up device uses a load limiting portion to stabilize the connection-disconnection mechanism.

A lock pawl head portion meshes with ratchet teeth while a cut-out in the close-off portion prevents contact.

Seat belt integrated airbags deploy based on rotation angle, ensuring impact absorption regardless of seat orientation.

A belt retractor drive wheel combines a profile head and push-on ring to transmit pretensioner force.

A safety belt retractor integrates pre-tensioning, force-limiting, and decoupling functions on a single end segment using helical surfaces.

A seat belt retractor uses a wedge member to lock the spool and cancel energy absorption during specific crash events.

Segmenting the sensor mass from the locking mechanism reduces vibration noise while maintaining precise acceleration detection sensitivity.

A U-shaped plastic housing frame widens elastically to receive a belt reel, enabling torsion-proof load transmission through fiber-reinforced materials.

Segmented torsion bar sections yield at distinct force thresholds, managing chest deflection during collisions via progressive load limiting.

A belt retractor uses a spring-loaded switch to activate the extension limiter only after the tensioner winds the webbing.

An interfering member on leg plates resists back plate contact, preventing frame deformation during rapid seat belt pull-out events.

An extension rib on the pressing portion of a webbing take-up device absorbs switching cam rotation variation.

A belt retractor uses a single catch lever to immobilize the inertia mass and sensor lever.

A collision prediction system coordinates seatback reclining and seatbelt retraction to optimize driving force.

A reversible seat belt tensioner driven gear uses a high-strength support ring with projections to brace coupling pawls against lateral slippage.

Segmenting the seatbelt retractor from the seat and mounting it on a roof track resolves the trade-off between occupant safety and rotational flexibility in autonomous vehicles.

Radially inward displacement of the engaging portion within the rotating body eliminates external space requirements, enabling compact V gear miniaturization.

A belt tensioner uses a shear element to rotationally lock the shaft within the housing before activation.

Axial pinion displacement prevents torque transfer during load limiting, enabling controlled unwinding rotation.

A motorized retractor applies stepwise restraining forces during emergency braking to secure vehicle occupants.

A vehicle restraint system uses segmented shoulder, positioning, and lower straps connected to retractors.

Pretensioner balls deform a weakened retractor frame portion, expanding the collection area while absorbing kinetic energy to prevent cover disengagement.

A seatbelt retractor spool uses an energy absorbing member to provide progressive load resistance during relative rotation.

Deformable pawls plastically yield to disperse torque, eliminating time delays in clutch gear engagement during vehicle collision events.

Rotatable arm rests guide webbing through slide members to engage seat belts, resolving conflicts between automatic engagement and seat orientation adjustment.

An extended-out section of the pillar inner panel joins the rocker upper surface to transmit loads and suppress deformation without separate members.

Asymmetric contact area geometry balances directional lock sensitivity, preventing early locking during horizontal acceleration events.

A belt retractor coupling mechanism decouples the reversible tensioning unit from the reel during activation.

An inductive brake limits belt retraction speed via electromagnetic force, preventing damage to interior panels and the belt buckle during rapid winding.

A belt retractor employs a gear-driven cam follower and friction coupling to disable vehicle-sensitive sensors, eliminating inertia mass noise during operation.

A webbing take-up device uses a ribbed sheet to press the cylinder against the body for reliable gas sealing.

A webbing take-up device uses a tightening margin between motor and housing portions to stabilize gear meshing separation and reduce operation noise.

A sliding member reduces frictional force between the power transmission member and housing in a seat belt pretensioner.

A webbing retractor clutch member loosens pressure contact to offset retracting spring urging force.

A webbing retractor switches a force limiter from low to high load via pretensioner operation.

Merging an escape tool with the restraint system ensures immediate accessibility when submerged, solving the bottleneck of inaccessible aftermarket hammers.

Segmented helical gear sections absorb axial forces during passive holding, reducing electric current strain on the vehicle supply system.

A locking web retractor uses a magnet to move a ferromagnetic component for selective spool rotation control.

A piston filled with resilient material compresses to absorb impact energy during sudden deceleration events.

A seat belt retractor uses a rotatable blocking ring to define webbing extension length.

A buckle detection apparatus measures current and voltage to determine seat belt fastening state without a separate sensor.

Multi-chamber inflation controls speed to reduce seatbelt pressure injuries while maintaining rapid occupant restraint.

Segmented detent arms simplify assembly and reduce mechanical effort when switching load limiters in vehicle seatbelt retractors.

Segmenting the tensioner tube and generator housing reduces manufacturing complexity while maintaining structural strength through a plastic coupling element.

An asymmetric drive wheel tooth profile reduces material abrasion and improves torque transmission efficiency in seatbelt tensioners.

Control unit activates electromotive winding aid based on usage cycles and temperature to compensate for return spring degradation.

A seat belt tensioner uses a metal band wound around a textured shaft extension to transmit withdrawal movement into rotational motion.

A seat belt retractor integrates a torsion bar and stop assembly to limit spool rotation during webbing withdrawal.

A webbing take-up device lever enlarges a spring coil diameter to transmit rotation between rotating bodies.