Percussion Musical Instruments TRIZ Cases

A drum hoop with a milled reduced thickness bend resists assembly distortion while maintaining structural strength.

Elastic cord secures flexible damping body below snare drum, absorbing piercing sounds while avoiding adhesive residue on the head.

Slotted bolt threads and a plunger indexing mechanism lock the hi-hat nut against displacement during forceful drumming.

Arched damper bar contacts tone bars at vibration nodes first to eliminate buzzing during keyboard percussion play.

A pedal beating apparatus uses a seesaw clamp beam to rapidly secure drum hoops of varying thicknesses.

Rubber strike pads on spaced keys mimic mallet rebound, enabling affordable practice without bulky authentic instruments.

A T-bar percussion carrier uses a cam-lock interlock to secure drums quickly.

Movable bars in a snare drum bracket adjust size via angle changes, eliminating the need for multiple stands.

A drumhead tuning rim system uses a cable tension dial assembly to adjust pitch.

Pivoting wings in the locking nut create an inner thread for direct mounting, reducing time spent screwing the nut onto the bolt.

A detachable mounting assembly uses a clamp bracket and wing screw to secure percussion instruments on stands.

Circular serrations on support rods and side frames allow quick inclination adjustment and folding, eliminating bolt manipulation that causes deformation.

Wedge locking pieces fill backlash gaps between friction plates, preventing relative movement and ensuring stable angle adjustment without screw loosening.