Towing Devices TRIZ Cases

Hard surfacing welding electrode fills recesses in nodular cast iron hitch tongues, while a removable ball insert rotates to minimize wear on the drawpin hole.

A trailer hitch uses a motor-driven positioning drive to align the coupling arm with the receptacle.

Coaxial torsion tubes enable vertical movement to absorb transient tongue forces while maintaining compact structure.

Controller estimates time to jackknife based on hitch angle rate of change, alerting driver before loss of control during trailer backup.

Direct sensor detection replaces indirect mechanical switches to resolve ambiguity in trailer coupling pivot end positions.

Segmenting the single door into two cooperating units resolves visual symmetry and access trade-offs via a shared guide track.

An annular locking ring retains an actuator pin in the hitch assembly, eliminating instability caused by pin backout during towing.

A trailer coupling control unit uses encrypted rolling code communication to authenticate mobile operating devices via shared secret keys.

Automated trailer coupler system raises support legs and manages parking brakes via motorized control mechanisms, eliminating manual connection steps.

Spring-biased rotatable tow hook retracts on impact to protect pedestrians and automatically resets for towing readiness.

Symmetric rotation blocking bodies cancel transverse reaction forces, allowing a compact design that withstands high loads without complex axial movement.

An adapter with single bearing points maintains horizontal alignment across heights, reducing structural complexity.

Safety device monitors trailer parking brake status to prevent auxiliary drive actuation during movement, ensuring accident-free shunting operations.

A weighted latch member pivots automatically to secure a hitch ring, simplifying connection procedures.

A towing device uses a sleeved cushion and tightening bolt to restrain axial movement of the cantilever.

A trailer length determination device calculates total length using a movement vector detected during constant circular driving.

Spring-loaded components enable vertical displacement to prevent jamming over rough terrain without requiring manual adjustment.

A trailer hitch ball rod pivots beneath the vehicle bumper to hide the coupling ball when not in use.

A self-contained hydraulic housing integrates a pump and reservoir onto the towing device to enable independent lift and catch actuation.

Rotating the actuating body distributes wear across fresh surface areas, eliminating the need for longer linear adjustment paths.

A ball clamp coupler uses a cam surface and biasing spring to automatically secure a hitch ball within the socket.

A reference finger inside a channel interacts with a sensor unit to measure relative position changes caused by structural deformations.

Rotating multi-face block with ball bearings positions towing accessories inside a hitch receiver, eliminating removal from the hitch.