Spanners TRIZ Cases

A planar plate wrench grips multiple bolt arrays via a lever arm and circular opening.

Segmented tubular substructures and superstructure halves resist axial forces, solving assembly complexity while maintaining structural integrity.

A rotary impact tool switches motor speed upon detecting hammer impacts to control tightening force.

An integrated sleeve structure uses an elastic component in a tooth groove to grip tools, preventing drop-off caused by excessive user force.

Disposable asymmetrical torque-limiting mount eliminates recalibration needs while achieving higher torque capacity through specialized actuator geometry.

Radial toggle mechanism drives moving member to disengage locking position, reducing axial size of clamping device for compact electric tool design.

A segmented slot and integrated stop retain the pinch clamp nub during rotation, resolving slippage issues in confined spaces.

Integrating a ratchet mechanism with a right angle drive reduces the number of required tools while maintaining functional versatility.

A switching mechanism toggles a main spring to bias gear rotation, extending or retracting claws automatically for one-handed operation in confined engine bays.

Segmented controller zones engage a retaining member to fix the tool head angle, resolving instability from unwanted transverse forces during adjustment.

A manually actuated detent system secures a power tool drive screw to the spindle via serrated cap engagement.

Strain measurement on the output socket enables accurate torque readings for straight and helical gear wheels.

A compact multitool integrates a carabiner gate, wrench, screwdriver, and bottle opener into a single unitary body.

A one-way wrench catching device uses differential teeth and a shared catch holder to manage ratchet engagement within a single chamber.

Segmented guide tube with rotatable jaws centers fasteners along the longitudinal axis, resolving placement accuracy versus structural complexity trade-offs.

Extracting retention from the shank allows a c-ring to hold the shuttle, reducing machining complexity and cost.

Variable driving pulses prevent screw coming-out and reduce power consumption by adjusting motor current according to fastening load.

A power tool relocates its detecting mechanism to the rear side of the motor to balance the center of gravity and improve user handling.

An electronic torque sensor detects strain in a flexible rod to measure true torque, allowing users to adjust the elastic force via an adjustment mechanism.

A ratcheting spanner uses pawls to rotationally couple a spanner body to a ratchet ring for bidirectional torque transmission.

A multi-element screwing device drives several fasteners simultaneously to secure components with uniform pressure.

A tool head features an anti-slip structure with convex and concave portions to enhance grip.

Stacked engaging assemblies with staggered teeth enable micro-angle rotation in a ratchet tool without reducing structural strength.

Segmentation of the hollow body and clutch mechanism from the driving arm reduces storage volume while maintaining torque accuracy for large machinery.

A controller detects trigger pulling patterns to adjust motor speed and torque modes in hand-held power tools.

A tool assembly uses a ratchet mechanism and pivotable units to simplify drive bit switching.

A locking mechanism with a pitman arm and tension arm secures tubing tongs to tubular members without manual force.

A pipe wrench assembly features a ratchet drive mechanism that enables independent rotation of two pipe grips.

Sliding auxiliary jaw enables continuous ratcheting motion without obstructing reverse rotation, eliminating sequential partial-turn strokes.

An adapter uses an elastic member to push a cover against the hole wall for secure retention.

Segmented tube, drive head, and connector modules maintain precise circularity to eliminate rotational deflection while enabling component replacement.

A controller monitors motor parameters to detect thread engagement and calculate rotation targets for precise screw setting.

Asymmetric LED placement on a work machine substrate minimizes glare and maintains illumination performance during tool impact.

A capacitor maintains control device power during battery replacement, eliminating system shutdown and reducing machining cycle time.

Opposing threaded shaft portions convert rotation into amplified axial movement, reducing turns required to adjust torque settings.

Segmented extraction tools engage broken fitting edges with localized teeth, reducing torque requirements for non-metallic PVC removal.

A right angle adapter couples a bearing race driver handle to the tool head at a perpendicular orientation.

A fastening tool with a flexible ultrasonic joint pivots the horn to deliver acoustic energy directly to stuck fasteners.

A fastening tool determines seating status by analyzing hammer hitting frequency components extracted from vibration signals.

Contrasting colors and mirror finishes on recessed display portions improve visibility in dim environments while maintaining durable grip.