Power Driven Tools TRIZ Cases

Controlling impact-start torque below 1,100 N·mm prevents cam-out during screw tightening.

Radial tabs on the motor front casing sandwich against a rib and ratchet head housing to prevent motor rotation, eliminating elaborate assembly fixtures.

An electromagnetic inductor accelerates an internal mass to strike a rotating driver mechanism for torque generation.

Nesting the impact spring inside the block reduces transverse length while a swivel plate ensures stable compression for high torque output.

An impact tool hammer features an inclined portion that distributes load to reduce surface pressure between the hammer and spindle.

Nested hammers enable mode switching to reduce tool size while maintaining rotary impact force.

Adjacent shaft bearings with differing mechanical properties absorb tilting moments and radial loads, reducing wear on the output rotary bearing.

Tapered hammer claw geometry reduces stress concentration at the root, maintaining striking mechanism durability under high motor output.

A ratchet tool controller adjusts motor rotational speed via trigger stroke and human-machine interaction settings to optimize drive performance.

A control unit delivers torque pulses in reverse direction using transmission play to loosen fastened joints.

Segmented bearing support with a nested ring member and stopper reduces axial length while maintaining torque transmission reliability.

Partitioning elements separate air from oil in hydraulic pulse units, preventing air re-entry into the chamber to maintain efficiency.

A powered ratchet tool uses a multi-piece shaft assembly with powdered metal couplers to transmit torque from the drive motor.