Device for learning tennis ball bouncing, and to developing proper posture and reflex of a tennis player

摘要

The device for practicing tennis ball rebounds that enables a trainee to develop a correct reflex action and a proper stance while playing tennis, including a supporting structure ( 1 ) connected with an arm ( 3 ) to which the ball ( 5 ) is fixed, the said the arm ( 3 ) being an element of a high elasticity; the end of the arm ( 3 ) lying opposite the ball ( 5 ) is fastened to the supporting structure ( 1 ) by means of a torsion working element ( 2 ); moreover, there is a joint, situated between the surface area ( A ) determined by a frame of the supporting structure ( 1 ) and the end of the arm ( 3 ) lying opposite the ball ( 5 ), of a subunit for adjusting a height of the arm ( 3 ) position, a subunit for adjusting and setting the angle of rotation ( 7 ) of the arm ( 3 ) around the vertical axis ( B ) perpendicular to the surface area ( A ) determined by the frame of the supporting structure ( 1 );
a subunit for adjusting a range of deviation of the work trajectory ( 8 ) of the arm ( 3 ) with the ball ( 5 ) and the subunit for adjusting the angle of inclination ( 9 ) of the torsion working element ( 2 ) includes the subunit for adjusting the force and work dynamics of the arm ( 12 ), while the ball is attached to the arm ( 3 ) by means of the non-invasive clamping subunit (4).