Spanners TRIZ Cases

A ratchet wrench rotary head uses a segmented coupling member to enable quick rotation and stable engagement with objects.

A one-piece remote wrench housing eliminates seams to enhance structural stability, preventing failure under torque and allowing easy access for maintenance.

An internal electronic tag reader in the screwdriver output shaft identifies accessories, isolating components from environmental shocks during operation.

Resilient members in a breaker bar connector distribute stress at junctions, preventing material failure from concentration.

Retractable pins in a socket wrench prevent unauthorized torque transmission by automatically retracting when misaligned with anti-theft screw codes.

Dual ratcheting mechanisms in a T-wrench eliminate frequent refitting, reducing torsion waste and improving nut tightening efficiency.

A segmented warning system uses color-coded primary units and staged secondary illuminators to indicate torque ranges.

Spring-loaded blocking elements replace complex clamping rings, reducing component count and easing manual release of the fastener feed device.

A gear reducer and adjustable conduction angle resolve the trade-off between rotational speed and torque in electric power tools.

A variable gear ratio ratchet uses a spring-loaded actuator to switch drive speeds without complex alignment mechanisms.

A pivoting rocker arm drives a wrench seat to rotate the ratchet head, eliminating manual repositioning when resistance is low.

Segmented actuating elements and extraction-based retaining rings separate unlocking motion from bit removal to prevent tilting.

An integrated retainer within a tool socket captures the separated drive-nut portion, preventing loss inside aerospace structures and simplifying removal.

A tube spring biases the pawl into drive gear engagement, eliminating spacer components and limiting lost motion in ratchet wrench mechanisms.

A movable clamp device adjusts the tool receiving hole size within an adjustable ratchet wrench to accommodate various workpiece dimensions.

A driving tool couples components via a tight interference fit between sections with distinct hardness levels.

Angled solid stop sleeve accommodates varying joint dimensions while maintaining attachment strength and rotation clearance.

Foldable arms nest inside a flexible hollow handle to resolve bulk issues while maintaining torque transmission.

An arcuate socket tool rotates stubborn glad hand connectors without breaking hoses, resolving the reliability trade-off.

Integrated splines bite into damaged fastener heads while a release bolt dislodges seized components without thread damage.

Air damping stabilizes inertia responsive member to prevent premature shut-off caused by spring action variations.

A ratcheting wrench uses pawls slipping past gear teeth to enable continuous rotation without disengagement.

A flexible housing and support system reduce frictional losses and load on the torque transfer mechanism, improving wrench strength and fatigue life.

Jaw recesses receive nut apexes to prevent rounding, resolving the trade-off between grip stability and adaptability across various nut specifications.

A hand tool uses a switching wheel to align positioning surfaces for multiple functions.

Embossed patterns on wrench handle ends prevent slippage during high-torque operations.

Nested screwing devices move inner tools axially to prevent incorrect usage and reduce manual change time.

An arc-shaped guiding slot moves a tenon along a shaft cylinder to compress a spring, displaying the locking torque value accurately.

An integrated coupling structure eliminates separate plugs to prevent dust accumulation while allowing smooth switching between in-line and angled states.

Segmented grooves and teeth on internal sidewalls prevent slippage during torque transfer to worn or corroded fasteners.

Mounting the torque sensor in the stationary handle isolates it from transmission vibration and rotation, preventing wire breakage and contact failure.

A tool adapter quick-release structure uses a movable sleeve and elastic member to enable fast component installation.

An impact wrench calculates output torque using rotary angular acceleration data to enable precise tightening without strain gauges.

An integrated holding device channels tool light via a waveguide and uses magnetic retention for fastening elements, resolving complexity trade-offs.

Rotary escapement system delivers fasteners with precise orientation, resolving the contradiction between high-speed pneumatic transport and accurate seating.

Stacked ratchet assemblies with independent directional switches increase torque and speed in confined spaces.

A screwing device uses tilted arms and a disposable screw belt to drive fasteners into boards.