Quick release nut assembly for percussion instrument

An adjustable nut for use with a bolt having a threaded shaft, said adjustable nut comprising:

• a main body having an axial passageway through which said threaded shaft is adapted to pass, said main body carrying a movable internal surface of said axial passageway facing said threaded shaft;
• first and second wing members pivotally mounted to said main body, said wing members including a respective cam surface adjacent said axial passageway, said cam surface adapted to deflect said movable internal surface toward said threaded shaft;
• wherein said first and second wing members are adapted to provide a locking position where said main body is immovably locked to said threaded shaft, an adjustment position where said first wing member is in said locking position and said second wing member is in an unlock position to permit selective adjustment of said main body with respect to said threaded shaft, and a sliding position where said first and second wing members are in an unlocking position to permit said main body to slide axially along said threaded shaft,
• wherein said locking insert and said main body include apertures which are aligned with an aperture provided in said first and second wing members.

An adjustable nut for use with a bolt having a threaded shaft, said adjustable nut comprising:

• a main body having an axial passageway through which said threaded shaft is adapted to pass;
• a locking insert mounted within said main body, said locking insert comprising a pair of movable internal surfaces that face said threaded shaft, said internal surfaces extending between an upper end and a lower end defining a portion of said axial passageway, wherein said internal surfaces are integrally formed with and connected by a substantially v-shaped, living hinge adapted to bias said internal surfaces away from said axial passageway and said threaded shaft, said substantially v-shaped living hinge providing an accordion effect so as to permit the upper and lower ends of the internal surfaces to move uniformly in a direction transverse to said axial passageway and provide an engagement with said threaded shaft;
• first and second wing members pivotally mounted to said main body, said wing members including a respective cam surface adjacent said axial passageway, said cam surface adapted to deflect said movable internal surface toward said threaded shaft;
• wherein said first and second wing members are adapted to provide a locking position where said main body is immovably locked to said threaded shaft, an adjustment position where said first wing member is in said locking position and said second wing member is in an unlock position to permit selective adjustment of said main body with respect to said threaded shaft, and a sliding position where said first and second wing members are in an unlocking position to permit said main body to slide axially along said threaded shaft.