Building Locks TRIZ Cases

A translucent end cap acts as a light guide for the integrated LED, resolving the contradiction between vandalism protection and wide-angle visibility.

A portable storage safe uses an internal wire cable cage to secure valuables within a flexible fabric shell.

A dynamic adjusting device replaces static spacers to continuously modify the rear grip distance, eliminating laborious reassembly for precise alignment.

Integrally molded elastic wings eliminate complex springs to resolve device complexity while maintaining reliable locking.

A door lock employs a pivotable follower with idle travel to absorb excessive press bar force, preventing component damage while maintaining locking security.

A pivotable stop member blocks the actuator to prevent accidental bolt retraction, resolving reliability issues when active locks remain engaged.

A reversible latch lock uses a tool to rotate the spring latch 180 degrees within the slider assembly.

A bolt assembly uses a spring to bias the bolt into an extended position, preventing inadvertent disengagement during repeated door operations.

A single damper connects to the uppermost locking unit of a multi-drawer system to control retraction speed.

Segmented locking assemblies allow reconfiguration between left and right hand swing without relocating the main lock, reducing installation time.

Curved C-shaped keeper with self-locating tabs engages locking lugs, preventing disengagement under high wind stress.

Self-centering locking cap prevents unauthorized access through plunger and ratchet engagement, avoiding complex manual alignment.

Relocating the spring mechanism from the lock to the rod guide allows independent force adjustment without disassembly, resolving installation complexity.

A compact espagnolette lock uses a nested blocking element to save space.

Spring-biased latch mechanism secures enclosure lids via foot pressure, eliminating special tool requirements for operation.

Axially guided bolt element pretensions window sash against frame via pivoting lever, resolving tight tolerance constraints in low rebate designs.

A return spring device uses a central recess and stop element to rotate a driver against restoring force.

A sash lock system uses an asymmetric actuator arm and cam to engage keeper or recess features for secure bi-directional locking.

A vehicle locking device uses a form-fitting blocking element to hold the locking part immovable against external forces.

A gear box blocking element moves transversely to prevent drive rod movement, stopping inadvertent disengagement by unauthorized persons.

A meter box locking mechanism uses a movable blade and bracket to secure the cover without requiring hand entry into the enclosure.

Segmented spring-loaded doors deploy instantly upon unlocking to resolve the contradiction between secure storage and rapid firearm accessibility.

Encoding element switches actuator between latching and momentary modes, eliminating part exchange.

Segmenting the latch pin into proximal and distal ends allows rotation through open, unit, and structure positions to prevent accidental door opening.

A spring latch uses a metallic central insert and plastic sliding portions to reduce friction.

A rotatable bar latch system secures animal enclosure doors using a bidirectional gravity mechanism.

A sliding door locking device uses a curved bolt guide to secure the latch against removal and block movement in multiple directions.

A rotatable connecting element secures closure parts through magnetic attraction and positional locking.

A steering lock stopper prevents unintentional locking by engaging a lock member through a slider and biasing spring, eliminating additional actuators.

Spring-loaded sliding bolts secure doors automatically, resolving the trade-off between simultaneous locking reliability and device complexity.

A surface vertical rod exit device conceals drive rods within exterior housings to transmit actuation force between the actuator and latches.

An anchor fitting and locking bolt prevent roll-up door theft by concealing the mechanism within the track structure.

Hook members secure casement window frames against deformation during hurricanes, maintaining structural integrity after glass breakage.

Integrating RFID processing circuitry into the key switch housing reduces system package size and parts count while maintaining security functionality.

A gate holder uses a spring-type shock absorber to temporarily hold the closing arm open for automatic return.

A temperature activated door spring uses a fusible pellet to hold the coil in a loaded position at ambient temperatures.

A persistent e-ink display presents static images on an electronic entry device using minimal power.

Opposing engagement teeth and a movable pivot resist extraction by screwdrivers, ensuring RC3 compliance without exposed threaded elements.

An asymmetric security pin nested within a metal sleeve prevents unauthorized forceful rotation while allowing standard driver access.

A sash window uses a facing member to cover miter joints between sill and jamb members.

A push-button assembly uses a screw-nut connection to adjust spring preload via a guide element.

Concave wing profiles eliminate gaps that allow tool insertion, resolving the trade-off between security and construction simplicity.

A lid positioner arm integrates a damping element to resist closing speed and control pivot motion.

Segmented locking units with dynamic latches enable quick removal and cleaning of medical storage drawers.

A multi-point lock uses a sliding cam to actuate independent locking elements within a standard housing.

Abutment blocks resist bidirectional blast loads without bending moments, eliminating extra locking mechanisms.

Transverse locking member movement compresses the central seal between sliding sashes for improved closure integrity.

Multi-layer rubber seals and magnetic snap covers create airtight chambers that block water seepage and noise under high wind pressure.

Perpendicular bolt engagement prevents wind-induced disengagement while reducing operational force requirements.