Spanners TRIZ Cases

A hexagonal steel sleeve pressed into a carbon steel tube socket unifies the joint through plastic deformation.

A screwdriver calculates a motor current limit to switch the drive to a standby state before initiating kinetic braking for precise tightening.

A lighted socket wrench integrates a power supply and ratchet drive member to deliver current to an illuminated socket for fastener work.

A socket moves a positioning member via a switch member to resolve wear and instability from retractable balls.

A powered ratchet tool uses a pivotable head locked by a collar mechanism to transmit torque, enabling operation in tight spaces without disassembly.

Cam surfaces drive expansion members outward against springs, adapting the handle grip to applied torque levels.

Segmented protrusions with obtuse corner angles increase contact area at object corners, resolving wear caused by size mismatches during rotation.

Segmented screwdriver head splits into large and small parts to absorb torque while reducing wear on the outer profile.

A latch-hook on the follower claw engages a magazine end cap undercut to hold the mechanism in a rearward position.

A screwing tool uses a bidirectional clutch to switch torque modes via rotation direction.

A ratcheting wrench uses a cam mechanism to drive an adjustable jaw for ergonomic operation.

A rotatable tool handle uses axis-aligned engaging points to switch between in-line and angled positions.

A double overmolded display housing integrates buttons and a lens into a single molded base to reduce component count.

A wrench with a magnetic torque head and bracing member positions securely against an oil filter for removal.

Segmented jaws with minimal moving parts enable small swing-angle torqueing of hydraulic hose nuts, resolving head size constraints.

Sensors automatically rotate the display value to resolve readability issues in confined working positions.

Integrating a rotatable multi-tool assembly into a cylindrical ratchet handle reduces storage complexity and loss risk while maintaining versatility.

A control device sets different torque limits for forward and reverse motor directions in an electric power tool.

Segmented engagement teeth on the tool surface prevent slippage during wear or corrosion, ensuring reliable torque transfer without damaging fasteners.

Segmented operation portions and rolling balls resolve operational smoothness issues in conventional push button ratchet handles.

A sliding magnetic component in an accommodation groove adjusts to varying hexagon head thicknesses.

An integrated adjusting element combines torque control with anti-spin prevention to resolve complexity and reliability trade-offs.

A reversible planetary gear screwdriver switches between speed and torque modes by altering handle attachment points.

A locking mechanism constrains rotation of the anvil and drive shaft, enabling powered impact driving and non-powered torque wrench functionality.

Snap-fit housing cover prevents screw contamination and vibration loosening in ratchet tools.

A pipe wrench housing features a channel with diverging interior walls and arcuate regions to distribute lateral loads across the structural component.

A ratchet wrench adjusts grip position along a segmented rod member to enable versatile drive modes.

Pivoting the proximal portion of a combination reamer drill handle reduces instrument changes and simplifies scapula preparation.

A hand tool uses a spring-loaded stop block to disengage when fastening torque exceeds a set limit.

Resilient arms in the retaining unit prevent axial shank movement during operation while allowing easy detachment via a control button.

An electric ratchet wrench uses an elastic device to bias a ring gear, enabling automatic switching between meshing and disengagement states.

An electronic controller manages hammer rotation and engagement in impact tools using solenoid actuation.

Curved terminal edges on cleat removal wrench arms engage the cleat base to apply manual torque for efficient installation and extraction.

Local signal digitization on the clamping tool arm prevents analog noise while a removable connector design avoids breakage during operation.

A screw joining method uses optical sensors to measure distance change quotients for precise head contact detection.

A screwdriver handle integrates two shafts via a detachable coupling mechanism for versatile tool use.

A telescopic tool positioning device uses a switch controller to engage a positioning member with second rod holes.

A camming tool grips thread protectors securely to enable safe installation and removal operations.

A multi-angle ratchet wrench uses a detent hole with an elastic member and switching button to adjust the working head angle.

Bending metal part limits max torque via pusher end, eliminating spring creep and reducing user effort for high precision.

Replacing tooth structures with roller-based inclined surfaces eliminates clattering noise and wear while maintaining continuous gripping capability.

An electric ratchet wrench employs a direction switching rod and bevel gear to overcome high resistance from rusted bolts.

A tool connecting rod uses a radial gap between the sleeve and magnetic member to enable independent movement.

A power screwdriver rotary joint uses a coaxial actuating ring and spring element to transition between release and blocking positions.

Segmented driving sections with recesses form hooks that pivot to apply force on damaged or rounded corners.

Articulated locking members enable independent engagement with peripheral toothing in a screwdriver drive mechanism.

A hose clamp pliers design featuring versatile contact points that securely engage wire spring and band spring clamps without tool changes.

A screw depth adjuster uses a polygonal sliding mechanism to set precise drive depths.