Spanners TRIZ Cases

Retractable nose portions engage screw heads to project tips forward, resolving alignment difficulties in tight connection brackets.

Air gaps between the non-conductive grip and metal body reduce heat transfer, solving inadequate insulation in hydraulic tools.

Overlapping metallic bodies with insulating material provide electrical isolation without bulky gaps, reducing shock hazards while maintaining tool durability.

A power tool integrates a light emitter to signal the next screw joint position during assembly operations.

A screwing tool uses a single spring element to actuate two torque-limiting arrangements with distinct pitch angles for efficient force transmission.

Helical gear wheel detects axial force to measure torque without adding a separate measuring shaft, maintaining compact device size.

A setting method for electronic torque tools adjusts operation parameters and stores them directly after adjustment.

An impact tool adjusts motor speed using inertial sensor data to optimize rotational force.

A torque wrench handle uses a detachable rear section as a cell cap to shorten the tool length.

Friction lock mechanism secures hydraulic wrench pin via compressible member expansion, preventing unintentional ejection during operation.

Segmented retainer and actuator structures with resilient members eliminate positional defamation in flex head tools, ensuring stable angular retention.

A two-stage universal joint uses a polygonal ball-joint and elastic member to fix the driving member at specific positions.

A multi-tool wrench integrates a retractable blade, pivotally deployed screwdriver, and extendable magnet into a compact body.

A single mode change dial selects operating modes while locking out the clutch in drilling settings.

Reduced threaded sections mitigate stress concentration at transition zones during torque transmission, preventing breakage and prolonging tool life.

Replacing cumbersome cables, the wireless system enables synchronized tightening of multiple fasteners for even pre-tensioning in hard-to-reach locations.

A socket uses movable sleeve portions to grip fasteners of varying diameters without complex internal springs.

Integrating the bus interface with the deformation body reduces signal interference by localizing evaluation devices near torque sensors.

A torque connector structure uses elastic biasing to hold pins within receiving grooves for secure mechanical engagement.

Segmented slide locking bases resolve assembly speed bottlenecks by enabling quick attachment of rotatable support tracks.

Telescopic tool extenders adjust their drive length via locking mechanisms, eliminating the need for multiple fixed-length accessories in confined workspaces.

A detachable screwdriver assembly uses a rotating extending tube to provide manual support during operation.

A torque wrench handle integrates a resilient torque arm and ratchet element for secure tool engagement.

Segmented shaft design expands within the anchor to prevent disengagement while maintaining a slender profile for clear surgical visibility.

Optimized 90° to 97° jaw tooth angles maintain clamping force at large swinging angles, preventing workpiece slippage.

A socket accommodates multiple threaded fasteners in a row while an adjustable attachment transmits torque to the inner peripheral surface.

A tubular tool holder secures insert tools via a spring-loaded locking sleeve that biases a contact element against a fixing element on the base body.

An intermediary base isolates the ball and spring from rough bore surfaces, enabling smooth operation and precise engagement.

Rotating adjusting member with asymmetric engaging portions moves axially to set torque levels.

Specialized tooling matches stuffing box geometries to eliminate grip slippage, preventing component damage and reducing maintenance downtime.

A friction clutch transmits rotational force through contact surfaces to reduce impact and noise in power tools.

A wrench uses a worm gear and rack to move jaws, with a lever increasing clamping force for secure fastener rotation.

Laser-processed surface increases friction resistance on oily workpieces, preventing slipping and enabling burr removal without additional tools.

A bendable wrench pivot uses interlocking teeth and a spring-loaded button to adjust the head angle.

Arcuate wrench head engages union lug to apply torque, eliminating impact damage and metal fatigue.

A locking nut key uses a variable diameter wall to adapt to patterned grooves while maintaining structural rigidity.

A torque sensing unit uses a single reaction arm to transfer load from the ring gear to the housing.

Segmented anvil groove with a curved friction ring distributes torque forces to prevent breakage and improve tool element retention.

Lever arm with torsion spring provides mechanical advantage to open jaws, resolving two-handed access constraints in confined spaces.

Cantilever beam slips gear cam teeth to prevent over-tightening errors.

Segmenting the screwing program into independent test states reduces testing complexity while maintaining assembly reliability.

Flexible member bends to create opposing elastic force, preventing premature screw disengagement during tight-angle operations.

An elongated toggler structure distributes elastic force along the axial direction to enhance ratchet wrench operational strength.

Tool yoke with segmented through hole increases frictional resistance to prevent fastener back-out.

A compact control device pivots a driving head relative to a handle using a button mechanism and pawl engagement.

A multipurpose hand tool embeds a continuity tester within its planar body alongside triple-stacked socket wrenches for compact operation.

Helical flutes on a cylindrical nut driver capture and expel debris, maintaining clear access to the fastener head in dirty environments.

Polygonal fixing shafts and elastic spacers prevent unwanted rotation during pivoting, eliminating linked tool movement in compact storage.

Sliding mallet platforms on wrench shafts increase impact area and eliminate hand injury risks during high-force fastening operations.

An insulated torque wrench integrates a rotatable grip with an internal switching assembly for direct torque setting.