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An angle adjusting device for adjusting the relative positions of musical instruments, such as a bass drum and jazz tomtom. The angle adjusting device has two rods for holding the musical instruments separately. Each rod has a head which includes an annular inclined toothed portion. A wing nut mount

An angle adjusting device for adjusting the relative positions of musical instruments, such as a bass drum and jazz tomtom. The angle adjusting device has two rods for holding the musical instruments separately. Each rod has a head which includes an annular inclined toothed portion. A wing nut mounted on one end of the axle and a lever having a cam surface for abutting against the wall of either one of the heads, through which full engagement, partial engagement and disengagement can be accurately set. Thus, rotation of one head relative to the other to adjust the angle of two rod can be implemented simply by singlehanded actuation of the lever.

대표청구항 ▼

An angle adjusting device comprising: a first rod having a first head, said first head having a first annular toothed portion, and a first through hole coaxial with said first annular toothed portion; a second rod having a second head, said second head having a second annular toothed portion for mes

An angle adjusting device comprising: a first rod having a first head, said first head having a first annular toothed portion, and a first through hole coaxial with said first annular toothed portion; a second rod having a second head, said second head having a second annular toothed portion for meshing said first annular toothed portion, and a second through hole coaxial with said second annular toothed portion; a first spring member disposed between said first head and said second head for biasing said second annular toothed portion from said first annular toothed portion; an axle having a first end and a second end; a fastening member mounted on said first end of said axle to hinder said first head from slipping off said axle; a lever pivoted with said second end including a cam surface abutting said second head for varying the axial position of said axle relative to said second head, whereby through cooperation with said fastening member, a variation of the relative position of said axle to said second head will drive said second annular toothed portion to engage or disengage said first annular toothed portion, wherein the teeth of said first annular toothed portion and said second annular toothed portion are inclined in one direction and said cam surface includes a segment to abut said second end for driving said first annular inclined toothed portion to partly engage with said second annular inclined toothed portion, and further comprising a second spring member disposed to slightly bias said first annular toothed portion toward said second annular toothed portion when said first and second annular toothed portion are partially engaged so as to permit uni-directional adjustment of angle between said first rod and said second rod.