Wrenches TRIZ Cases
- Hydraulic Nut Clamping with Torque-Limiting Clutch
A torque-dependent clutch in the nut drive limits tightening force in hydraulic screw clamping, avoiding over-torque without calibrated tools.
- Hydraulic Bolt Tensioner With Slip Clutch Torque Limiting
A torque-dependent slip clutch in the gear train limits nut torque in a hydraulic bolt tensioner, preventing over-tightening with simple hand tools.
- Bi-Directional Screwdriver Ratchet for Continuous Reverse Rotation
A gear-and-pawl reversing mechanism keeps the screwdriver engaged during reverse turns, cutting re-grasping time and screw head damage.
- Swingable Impact Rod Assembly for Precise Angled Striking
A threaded connection rod and swingable impact rod improve striking precision, force consistency, and angle adjustment without deforming components.
- Compact Coarse/Fine Hand Tool for Microradian Rotation
A nested reducer gives a compact hand tool coarse direct rotation and micro-fine control within one hundred microradians.
- Press-Type Automatic Screwdriver Mechanism for Compact Assembly
A press-type automatic screwdriver uses an elastic member and drive link to convert linear force into rotational motion.
- Ratchet Drive Reversing Cam Mechanism
A ratchet drive uses a cam to switch pawl engagement for torque direction control.
- Speed Multiply Screwdriver Handle Gearbox
A screwdriver gearbox transforms handle rotation into faster shaft speed, resolving the trade-off between manual tactile feedback and screw advancement rate.