Construction Fastening Devices TRIZ Cases

A cylindrical latch uses a rotatable tailpiece with transverse recesses to enable axial adjustment between two fixed backset positions.

Elastic sleeve connections absorb actuation noise and prevent tilting forces during handle installation.

Split retaining element uses axial displacement between upper and lower parts for secure mounting in fitting grooves.

Coupled holding elements rotate simultaneously to engage the undercut, resolving assembly complexity while ensuring connection stability.

An adjusting element clamps the door between the lock shell and yoke, resolving slacking caused by thickness variations.

A T-shaped lever gate latch uses a weighted chain to apply downward bias on the pivotal latch lever.

A toothed wheel element rotates to transfer motion between perpendicular drive rods in window fixture arrangements.

A swivel locking mechanism uses gravity to secure container lids in upright positions.

Telescopic conduit adjusts cable length to resolve inventory complexity and installation trade-offs.

A fastening element uses resilient latching elements to engage fitting grooves automatically without screwing.

An inclined elongated hole guides a clamping element to rotate the retaining element, eliminating expensive eccentrics for reliable attachment.

Pre-assembled cable modules connect separate lock components, eliminating drilling precision errors and reducing installation time.

Segmented latch cores and universal mounting plates reduce design complexity, while direct striker monitoring prevents accidental release during deceleration.

An adjustable rail element aligns locking bolts with receptacles in sliding door assemblies.

A vehicle door lock lever pivots via inertial force to separate from a pawl during collisions.

Fixed fitments with flat load transfer surfaces absorb peripheral loads, reducing weight and complexity compared to traditional hook assemblies.

A lock safety device uses a sliding cover bushing to transmit rotation while protecting internal components from external tampering.

A rotational driver adjusts the latch bolt position along a non-parallel axis, resolving inconsistent locking engagement caused by door sag and wear.

A latch featuring a downward-sloping internal receptacle prevents collar snagging while maintaining secure engagement.

Predetermined rotary latch bending point increases overlap under load to prevent unplanned opening without widening the pawl locking surface.

Segmented bar members translate to engage blocks, securing the door against arc forces while eliminating sharp projections that injure workers.

A folding container lock member uses a pivotal shaft to pivotally move an operation portion.

A spring-loaded oblique bolt redirects external force via a rotatable tip.

Helical slot and protrusion mechanism adjusts backset dimensions, eliminating separate assembly variants.

A rotating unlocking hook eliminates high sliding friction against the panel, reducing manual effort required to disengage the ejector lever mechanism.

Segmented faceplate rails minimize wear and extend service life by reducing friction between the drive rod and structural components.

A window fitting coupling mechanism uses a spacer to align drive bars for assembly.