Construction Fastening Devices TRIZ Cases

Universal faceplate and cylindrical sleeve design accommodates mortised and non-mortised doors, eliminating separate assembly inventory requirements.

Segmented coupling catches enable easy gearbox replacement without destroying the connection.

A gear wheel bearing mount connects window frame rods via positive engagement, eliminating manual cutting and enabling precise length adjustment.

A thin-walled annular plate mounted between the cylinder housing and collar reveals position markings through a viewing window.

A self-contained module integrates with existing mechanical locks to enable automatic slam-latching functionality without manual rotation.

A toggle cam latch assembly transfers rotational force into linear motion via translation plates.

Curved turning pieces convert sliding friction to rolling motion in an oblique bolt, reducing wear and extending service life without excessive lubrication.

Deformed threads on a stainless steel plug resist high cantilever loads and corrosion in storage containers without specialized installation tools.

Rotating the backset facia on a multipoint lock gearbox changes the backset distance, eliminating inventory for multiple window sizes.

A vehicle door latch uses a projected part and engagement hole to maintain striker retention during impact events.

Parallel galvanized wire sections replace elongated holes in espagnolette fitting connecting rods to transmit motion.

Internal kinematic unit converts grip rotation to rod translation, reducing external dimensions while minimizing profile machining.

A peripheral assembly for multipoint locks uses a rocker arm and eccentric projection to block sliding latch rotation.

An adaptor mechanism transmits motion from an external handle to an internal lock via a segmented case with opposing grooves.

A vehicle door latch system uses a release cancel mechanism to disconnect force transmission paths.

A tonneau cover latch assembly uses a button and slider to actuate the locking mechanism.

A roof window locking device uses a captive actuating element in a keyhole recess for tool-free assembly.

A convertible cam drive assembly enables door handles to pivot and operate across multiple orientations using a sliding bolt mechanism.

A preassembled cam lock assembly uses a lost motion slot to orient the drive pin for reliable rotation.

Eccentric coupling mechanism enables rapid mode switching without replacing the entire metalwork system.

A vehicle door latch mounts a balance weight on the pawl lift to apply inertia load that resists panel deformation forces during collision.

Over-center toggle linkages compress vertical height while helical locking surfaces secure the dome for single-operator assembly.

A swiveling sash fastener rotates around a guide pin to lock the door in multiple directions.

A reversible door lock mechanism uses interchangeable coupling members to adapt to various door orientations.

A door lock integrates an anti-theft latch that automatically extends when the door closes.

Radial support in a door latch bolt seat prevents pinion misengagement under radial forces, reducing manufacturing costs and drive unit weight.

Coupling unit links drive element to catch, eliminating intermediate levers that increase device complexity and manufacturing costs.

Two spatially separated support points on a slide prevent the latchbolt from being pushed back, resolving security vulnerabilities.

Elastic clamping legs deform to fit grooves, eliminating play and simplifying assembly of locking bars.

A lock unit shutter element occludes the cylinder channel to block internal access.

A door lock bolt features a trigger that automatically retracts the locking mechanism upon activation.

A mortise lock uses a toggle assembly to selectively enable or disable door handles for latch bolt control.

A plastic adapter profile bridges rigid wooden frames and faceplates, replacing complex screw fastening with simple clip-based insertion.

A substrate storing container latching mechanism uses a rolling ball to reduce rotational force.

An integrated power drive mechanism merges the lock function into the operator assembly, eliminating separate sensing devices and reducing installation costs.

A reinforcing insert in the actuating opening of a motor vehicle lock housing provides a resilient guide for moving components.

Segmenting the energy accumulator allows manual and automatic locking modes on one base design, reducing inventory complexity.

A vent panel with a protrusion moves between positions to manage cabin pressure within limited door space.

A lock assembly integrates a latch, deadbolt, and shootbolts into a single unit actuated by one handle.

Segmented latch components enable a movable pin to engage a bent-wire keyhole, preventing animal escape while maintaining simple access.

A sliding piece with transverse locking and longitudinal tilting pins reduces fitting volume while maintaining adaptability to narrow window frames.

Offsetting the cam groove increases driven rotation angle, allowing accurate standby area detection with lower-cost sensors.

A compact actuator uses a flat spiral spring on the motor shaft to urge rotation toward an initial position.

Resilient pawl absorbs impact energy through elastic deformation, reducing noise and vibration while maintaining closed position reliability.

A door lock device uses a universal lever to move between lock and unlock positions, reducing part count by applying universality.

Oblique contact section guides blocking element into free space, preventing latch bolt pushback when rebate clearance is insufficient.

A spring-biased blocking member pivots under inertial forces to prevent latch lever movement, ensuring door security without adding permanent complexity.

A motor vehicle door lock uses a locking lever to mechanically disable the actuating mechanism during high acceleration events.