Shoulder member and pipe member connecting structure
A shoulder rest ( 30 ) for a stringed instrument with a support element ( 32 ) extending in a longitudinal direction (L) for resting on the shoulder and/or chest of the player, on which a number of hinged clamping units ( 34 ) are arranged, is intended to be adaptable in a particularly simple manner to different geometric requirements. For this purpose, the shaft ( 50 ) of the or each clamping unit ( 34 ) is mounted in each case by means of integrally formed pivot pins ( 58 ) in an associated pivot bearing ( 55 ), the bearing shells ( 60 ) of which are designed in accordance with the invention in each case in the form of an arc segment which does not engage around or enclose the pivot pin ( 58 ) completely, but only over a certain arc length. The shaft is preferably positioned off-center and thus enables particularly simple and fast dimensional adjustments.
1 . A shoulder rest for a stringed instrument with a support element extending in a longitudinal direction for resting on the shoulder and/or chest of a player, comprising a number of hinged clamping units arranged on the support element, a shaft of each clamping unit being mounted by means of integrally formed pivot pins in an associated pivot bearing, each pivot bearing including bearing shells designed in the manner of an arc segment, wherein the bearing shells do not engage around or enclose each respective pivot pin completely but only over a certain arc length, each clamping unit further comprising a respective holding clamp disposed on and supported by a threaded shaft threadable into an internal thread integral with the shaft of the clamping unit, wherein the shaft of the respective clamping unit is guided eccentrically or off-center such that a central axis of the shaft does not intersect an axis of rotation of the respective pivot bearing in a fully unfolded state, but passes the axis of rotation spaced apart by an offset, and further comprising a set of interchangeable shaft elements having different offsets, such that a clear width between the respective holding clamps in the fully unfolded state can be varied by replacing one of the interchangeable shaft elements.
2 . The shoulder rest of claim 1 , wherein the shaft of each clamping unit is designed in a foot region of the shaft in the manner of a roller body with an approximately cylindrical cross-section.
3 . The shoulder rest of claim 2 , wherein the roller body of each clamping unit is provided with an end piece which cooperates with a stopper mounted on the shoulder rest which forms a stop for the swinging out of the shaft.
4 . The shoulder rest of claim 3 , wherein the end piece of the respective roller body is provided with an O-ring guided in a groove.
5 . The shoulder rest of claim 4 , wherein the O-ring is made of rubber.