| 摘要 |
<p>PURPOSE: To facilitate the production and processing of a front part frame and to allow clamping and unclamping of a head holding hoop with good operability from the lateral side of a foot pedal in the state that the drum head of a bass drum is not obstructive by constituting a hoop clamping mechanisms without complicating the shape and structure of the front part frame. CONSTITUTION: The front part frame 32 is provided with only the hoop rest 46 and hoop clamping body 47. A unit 50 which is separated from the front part frame 32 is provided with a cam member 53 for turning a hoop clamping body 47 and a bolt 54 with a handle for turning this cam member 53. The unit 50 is mounted in the posture that the side having a bolt 54 with a handle projects outer than the side edge of the foot board 39 onto a base plate 30 mounted with the front part frame 32 and retreats diagonally backward toward the side having the bolt 54 with the handle from the front end of the cam member 53.</p> |
