Abstract: A stand adjustment device has a tripod-connecting member, a connecting seat, a distal clamping plate, a boom-connecting tube, a locking shaft, and a manual operating member. The connecting seat is rotatably located around the tripod-connecting member. The distal clamping plate is detachably attached to a side of the connecting seat. One end of the locking shaft is movably disposed in the boom-connecting tube. The boom is slidably mounted through the boom-connecting tube and the locking shaft. The locking shaft is slidably mounted through the boom-connecting tube, the distal clamping plate, and the connecting seat such that the boom-connecting tube is rotatable relative to the connecting seat. The manual operating member and the locking shaft are configured to clamp the boom-connecting tube, the distal clamping plate, and the connecting seat therebetween into a locked condition.

Abstract: A stand adjustment device has a tripod-connecting member, a connecting seat, a proximal clamping plate, a boom-connecting tube, a locking shaft, and a manual operating member. The connecting seat is rotatably located around the tripod-connecting member. The proximal clamping plate is detachably attached to a side of the connecting seat. One end of the locking shaft is movably disposed in the boom-connecting tube. The boom is slidably mounted through the boom-connecting tube and the locking shaft. The locking shaft is slidably mounted through the boom-connecting tube, the proximal clamping plate, and the connecting seat such that the boom-connecting tube is rotatable relative to the connecting seat. The manual operating member and the locking shaft are configured to clamp the boom-connecting tube, the proximal clamping plate, and the connecting seat therebetween into a locked condition.

Abstract: A stand adjustment device has a tripod-connecting member, a connecting seat, a proximal clamping plate, a boom-connecting tube, a locking shaft, and a manual operating member. The connecting seat is rotatably located around the tripod-connecting member. The proximal clamping plate is detachably attached to a side of the connecting seat. One end of the locking shaft is movably disposed in the boom-connecting tube. The boom is slidably mounted through the boom-connecting tube and the locking shaft. The locking shaft is slidably mounted through the boom-connecting tube, the proximal clamping plate, and the connecting seat such that the boom-connecting tube is rotatable relative to the connecting seat. The manual operating member and the locking shaft are configured to clamp the boom-connecting tube, the proximal clamping plate, and the connecting seat therebetween into a locked condition.

Abstract: A stand adjustment device has a tripod-connecting member, a connecting seat, a distal clamping plate, a boom-connecting tube, a locking shaft, and a manual operating member. The connecting seat is rotatably located around the tripod-connecting member. The distal clamping plate is detachably attached to a side of the connecting seat. One end of the locking shaft is movably disposed in the boom-connecting tube. The boom is slidably mounted through the boom-connecting tube and the locking shaft. The locking shaft is slidably mounted through the boom-connecting tube, the distal clamping plate, and the connecting seat such that the boom-connecting tube is rotatable relative to the connecting seat. The manual operating member and the locking shaft are configured to clamp the boom-connecting tube, the distal clamping plate, and the connecting seat therebetween into a locked condition.

Abstract: A stand adjustment device has a tripod-connecting member, a connecting seat, two clamping plates, a boom-connecting tube, a locking shaft, and a manual operating member. The connecting seat is rotatably located around the tripod-connecting member. The two clamping plates are detachably attached to two opposite sides of the connecting seat respectively. One end of the locking shaft is movably disposed in the boom-connecting tube. The boom is slidably mounted through the boom-connecting tube and the locking shaft. The locking shaft is slidably mounted through the boom-connecting tube, the two clamping plates, and the connecting seat such that the boom-connecting tube is rotatable relative to the connecting seat. The manual operating member and the locking shaft are configured to clamp the boom-connecting tube, the two clamping plates, and the connecting seat therebetween into a locked condition.

Abstract: A stand adjustment device has a tripod-connecting member, a connecting seat, two clamping plates, a boom-connecting tube, a locking shaft, and a manual operating member. The connecting seat is rotatably located around the tripod-connecting member. The two clamping plates are detachably attached to two opposite sides of the connecting seat respectively. One end of the locking shaft is movably disposed in the boom-connecting tube. The boom is slidably mounted through the boom-connecting tube and the locking shaft. The locking shaft is slidably mounted through the boom-connecting tube, the two clamping plates, and the connecting seat such that the boom-connecting tube is rotatable relative to the connecting seat. The manual operating member and the locking shaft are configured to clamp the boom-connecting tube, the two clamping plates, and the connecting seat therebetween into a locked condition.

Abstract: A cable-driven beater mechanism for a percussion instrument has a base, a transmission shaft pivotally mounted on the base, a beater connected to the transmission shaft, a cable transmission assembly, a restoring spring and a cable. An elongated guiding slot is formed in the standing plate. The cable transmission assembly is pivotally mounted on the base and protrudes into the guiding slot. The cable and the transmission shaft are connected via the cable transmission assembly. Pulling force from a player is transferred via the cable to pivot the transmission shaft and the beater. The restoring spring returns the transmission shaft and the beater to an original position. The cable moves along a straight line during operation to reduce rubbing and repeated bending of the cable, which prolongs service life of the cable, reduces noise during operation, and allows the beater to respond more swiftly to the pulling force.