Spanners TRIZ Cases

Protruding ribs engage tool body recesses to replace elastic webs, ensuring reliable jaw retention during cam-driven gripping cycles.

Floating sleeve and spring bias decouple depth adjustment rotation from impact driver torque, maintaining precise screw depth during operation.

A spiral ratchet driver uses a crank and slider mechanism to convert rotary motion into linear reciprocating action for precise fastening.

Interchangeable socket drives and friction members enable versatile U-joint assembly without damaging components.

Pivotable jaw assembly accommodates varying user strength, preventing over-tightening of rigid multi-lobe valves.

A pneumatic air hammer tool applies rotational impacts to eccentric locking collars via a torque arm and interchangeable collar-engaging portion.

Segmented driving recesses with varying inclination angles maintain grip on worn fasteners, preventing slip and reducing wear during operation.

A ratcheting brake bleeder wrench enables one-handed valve operation without manual repositioning.

A rotary screwdriver control method regulates motor voltage to monitor speed and torque thresholds for precise fastener management.

A compact power tool wrench head integrates a rotary socket and nested spanner to grip adjacent components.

Helical grooves and perpendicular walls in the rod prevent unintended rotation changes, enabling easy sterilization of surgical screwdrivers.

Pivoting horns via flexible joints reduce breakaway torque and prevent fastener breakage in corroded or thermally cycled environments.

Dynamic speed adjustment reduces pre-stress force loss during anchor setting, enhancing tensile loading resilience.

Alternating pole magnets channel flux through a keeper to provide axial attraction without lateral slip or fastener magnetization.

A cylindrical adaptor extends pulling force between a cartridge puller and faucet housing to facilitate valve extraction.

A ratchet wrench barrel rotates to adjust driving angles while a pin interlocks with positioning portions for secure orientation.

A wrench drive mechanism uses push blocks and elastic members to enable continuous rotation of the driving head relative to the handle.

Segmented engagement surfaces in a magnetic sleeve allow air discharge during installation, preventing unit breakage and reducing oxidation.

A hand tool positioning device uses a retaining portion to prevent the adjusting member from being lost.

A rod tightening tool uses a semi-hollow member and clamping assembly to secure elongated elements.

Segmenting the body and tips resolves weight versus durability trade-offs by allowing independent material selection for each component.

A hand tool handle uses an insulating sleeve and end plug to isolate the metal rod, preventing electric shock during high voltage work.

Segmented handle and indicator components enable universal production while the locking ring provides axial and radial engagement.

A screw locking control system uses voltage detection and sequential indicator lamps to guide operators through standardized assembly steps.

A dual pawl ratchet mechanism uses a top-mounted seal on the reversing lever to block particulate ingress into the drive cavity.

A control circuit manages automatic gear shifts in electric tools by monitoring motor driving current and rotation rate to ensure stable operation.

A handheld power tool control unit detects operating states by comparing motor signals with model waveforms.

Adaptive speed control reduces dynamic drift at high speeds, resolving the trade-off between assembly efficiency and manufacturing precision.

A control system adjusts screwing speed using torque feedback coefficients to maintain precise target values during assembly.

Radial wing channels store bits to resolve the trade-off between storage quantity and maneuverability in tight spaces.

An air driven nut rotation device uses apertured engagement disks and radial drive arms to advance nuts along threaded rods.

Mounting strain gauges on an isolated inner wall eliminates deadband effects and residual forces from binding, ensuring highly accurate torque monitoring.

Optimized motor output and speed-reduction ratios resolve the contradiction between device complexity and maximum fastening torque requirements.

Segmented ring segments pivot on parallel axes while a lever actuates the swing-open mechanism for confined space access.

A hand tool positioning device uses a threaded shank and rotatable plate to pivotally adjust the tool head angle within a handle chamber.

A silicone cover boot distributes torque across the wrench flats, preventing coating damage on fire sprinklers.

A hand tool shank locks at two specific angles using a detent and spring mechanism, eliminating redundant positions to reduce device complexity.

Nested insulating sleeve and elastomeric jacket block electrical shock risk while maintaining secure shaft retention.

A multi-tool integrates a spring mechanism to indicate torque levels.

Adjustable rotational speed constancy in hand-held power tools improves screw connection precision.

An inclinometer detects tool inclination to trigger the correct tightening program, eliminating manual selection errors and reducing production burden.

A speed controller uses pseudo-detection speed to maintain motor rotation in rotary impact power tools.

Dynamic reconfiguration of switching elements enables user-defined parameter adaptation without increasing manufacturing complexity or hardware costs.

Hook-like wrench attachment extends torque wrench reach to tighten polygonal gas meter union nuts, resolving inconsistent manual torque application.

A rotatable tool handle switches between working and storage positions via a rotating joint.

Resilient core shafts limit excessive torque through elastic deformation while mobile ratchets produce acoustic feedback to signal preset limits.

A dual direction ratchet mechanism uses segmented pawls and a sprung plunger to transmit torque through modular ramped inserts.

Chuck light holes transmit light from a housing-mounted array to illuminate the work area, resolving visibility issues in substandard lighting conditions.