Lock Casings TRIZ Cases

A rotatable eccentric insert lets one lock cover plate align with bolt and cylinder housings across multiple cabinet lock orientations.

Fixed locking pins and a flattened bridge end enable simple rotational assembly of a cylinder lock, reducing alignment difficulty for novice users.

Hidden plate connections replace visible screws in a sliding door or window lock, enabling faster installation and one faceplate for varied panel heights.

A clutch assembly blocks torque transfer to the lock tongue until the correct code is entered, preventing forced opening of the rotary lock.

A split locking head and guide channel let heavy sliding sashes be mounted in a tilted position, simplifying removal and reducing installer risk.

Fixed locking pins and a flattened bridge end enable rotational self-alignment, making cylinder lock assembly and disassembly easier.

Elastomeric retainers compress in the door bore to hold lock housing position and orientation, simplifying flush installation.

Movable locking elements and snap-fit fastening let one lock cylinder cap maintain dust protection across different lock designs.

A movable cam blocker lets one latch fit knob or lever handles and switch backset positions for easier door installation.

A releasable spacer with an attachment feature and ledge lets one spindle fit multiple lock cylinders, cutting variants and inventory cost.

A baffle with staged aperture sizing blocks debris from reaching the lock mechanism while preserving lock assembly installation and security.

Dual plungers lock the rotator until correct key insertion, helping block cam access after picking or cylinder snapping.

A one-way cam and slider let the trim show locked or unlocked status while blocking indicator-driven tampering of the lock state.

Steel connecting elements in a die-cast zinc central module improve pull and twist resistance while lowering locking cylinder manufacturing cost.

A linked press-and-pull lock body enables door opening from either side while simplifying transmission parts, assembly, and maintenance.

A stamped lock mounting plate adds a recess and abutting portion to stop brake element sticking and improve assembly reliability.

A master cam and slide plate let the key unlock the night latch without retracting the latch, cutting operating torque and improving compliance.

Coaxial balls and a one-piece ring strengthen a double lock cylinder against pull-out manipulation while lowering core-to-bolt friction.

A segmented lock body uses a main body and divider to simplify bore formation and cut the cost of multi-position pin locks.

A steel bar, plastically deformable rod, and locking insert reinforce the radial expansion to resist forced entry and simplify assembly.

A tempered-steel bar and stainless-steel lamina reinforce the lock’s radial expansion, resisting tearing and simplifying assembly.

A contoured plate separates encoding and connection spaces, simplifying assembly while hard pastilles and closure plugs protect against forced entry.

A height-offset remote trim and pushbar separate access by user height, limiting unsupervised child entry to secured areas.

Extended protrusions and protective cover plates strengthen a door lock hardware box beyond the limits of sash-mounted latches and locks.

Preassembled lock mechanisms limit housing interference, simplifying dual-lock assembly while preserving smooth operation and hand feel.

A support element carries return force through the cylinder housing surface, reducing key friction and blockage during locking.

A spring-loaded lift finger keeps the pushbar-to-latch connection aligned, reducing manual adjustment and installation errors.

Steel or bronze lockset components close gaps around through-door fasteners, limiting light and flame passage when trim materials melt.

A frangible connection and biasing mechanism block rotor actuation after snapping, keeping the cam secured and the lock operable from inside.

A flange, groove, and escutcheon projection secure rotational alignment while allowing disengagement to limit violent-force damage.

Interchangeable transmission members let one cylinder lock adapt to mortise locks with different specifications.

A power-tool-driven spiral resilient member locks the latch and mechanisms together, simplifying assembly across door thicknesses.

This case uses segmented, friction-fit covers and integrated latches to resist tampering while simplifying assembly.

A door fitting uses an undercut and projection to secure the external part against unauthorized removal.

Segmented plates and a cam interface prevent component ejection during plug removal, ensuring assembly integrity.

An axially biased clutch in a cylinder lock prevents forced entry by locking immobile when the actuator is removed.

Clutch mechanism selectively engages interior lock cylinder with cam to maintain operation after exterior cylinder removal.

Composite materials in a hybrid lock cylinder resolve the trade-off between structural strength and weight while eliminating lead content.

A turning knob uses a rotatable stator with complementary notches to enable multiple key withdrawal positions from a single component.

A universal key-in-knob lock cylinder assembly integrates a single housing and plug for interchangeable core compatibility.

A bifurcated dummy lock core with an outwardly biased catch irremovably secures to the housing.

Resilient drivers push against a shared cam in a dual cylinder lock, engaging restriction units to block unauthorized access if one cylinder sustains damage.

A cylinder lock uses a locking element with a blocking section to secure the cylinder against unauthorized removal.

Segmented notches on the lock body form a stepped break surface that eliminates graspable material, preventing tool manipulation after snapping.

Eccentric pin spring returns lock cylinder core to neutral position, preventing dead center instability in panic locks.

A coupling mechanism using notched bars and a longitudinal connection part adjusts cylinder length to prevent protrusion in non-standard doors.

Inclined flank geometry converts applied torque into axial force, shifting the floating coupling member out of engagement without a return spring.

A control lug and finger pin mechanism retains a lock cylinder in a housing using sidebit key displacement to expand usable bitting combinations.

A cylinder lock uses a spring-loaded pin to block cam movement when the key is absent.

Hinged bridge adapter inserts into non-standard door stile cavities to support mortise locks without replacing the entire door.

A lock cylinder uses a connecting bridge to join casing portions and secure modular assembly.