The present disclosure discloses a tornado yoyo, including two rotating disks and a connecting axle configured to connect back portions of the two rotating disks, in which a protruding cylinder provided with a bearing thereon is disposed in the rotating disk and located in the middle of the rotating disk; a rotating cap is disposed outside the rotating disk and provided with a connecting hole portion extending from the middle of the rotating cap to the rotating disk, and the connecting hole portion is sleeved on the bearing to realize a rotation of the rotating cap relative to the rotating disk; and an outer edge of the rotating cap is provided with an edgefold configured to envelop an edge of the rotating disk, so that when the yo-yo is held or pinched in a forward direction, the rotation of the rotating disk will not be influenced.
1. A tornado yoyo, comprising two rotating disks ( 1 ) and a connecting axle ( 2 ) configured to connect back portions of the two rotating disks ( 1 ), wherein,
a protruding cylinder ( 11 ) provided with a bearing ( 4 ) thereon is disposed within the rotating disk ( 1 ) and located in the middle of the rotating disk ( 1 );
a rotating cap ( 3 ) is disposed outside the rotating disk ( 1 ) and provided with a connecting hole portion ( 31 ) extending from the middle of the rotating cap ( 3 ) to the rotating disk ( 1 ), and the connecting hole portion ( 31 ) is sleeved on the bearing ( 4 ) to realize a rotation of the rotating cap ( 3 ) relative to the rotating disk ( 1 ); and
an outer edge of the rotating cap ( 3 ) is provided with an edgefold ( 32 ) configured to envelop an edge of the rotating disk ( 1 );
wherein an end of the protruding cylinder ( 11 ) is provided with a screw hole ( 14 ), and after the bearing ( 4 ) is sleeved on the protruding cylinder ( 11 ), a screw ( 6 ) is screwed into the screw hole ( 14 ) to realize a connection between the bearing ( 4 ) and the protruding cylinder ( 11 ), in which the screw ( 6 ) has a head whose diameter is larger than that of the protruding cylinder ( 11 ).
2. The tornado yoyo according to claim 1 , wherein a gravity center of the rotating cap ( 3 ) is coincident with a gravity center of the rotating disk ( 1 ).
3. The tornado yoyo according to claim 1 , wherein a space defined by the edgefold ( 32 ) and the edge of the rotating cap ( 3 ) is larger than a disk edge ( 12 ) of the rotating disk ( 1 ), and a gap exists between the edgefold ( 32 ) and the disk edge ( 12 ) of the rotating disk ( 1 ) after the rotating cap ( 3 ) is connected with the bearing ( 4 ).
4. The tornado yoyo according to claim 1 , wherein an outer surface of the rotating cap ( 3 ) is an evenly concave surface which is high at edge and low in middle, a center of the rotating cap ( 3 ) is a lowest part of the concave surface, the connecting hole portion ( 31 ) of the rotating cap ( 3 ) is located on a bottom surface of the rotating cap ( 3 ), and a hole wall of the connecting hole portion ( 31 ) is molded integrally with the rotating cap ( 3 ).
5. The tornado yoyo according to claim 1 , wherein a protruding axle ( 33 ) configured to be held by a player or be plucked by a yo-yo string protrudes outwards from the middle of an outer surface of the rotating cap ( 3 ).
6. The tornado yoyo according to claim 1 , wherein a disk edge ( 12 ) of the rotating disk ( 1 ) is provided with a ring groove ( 15 ) in the middle of an end surface thereof, and a counter weight ring ( 7 ) is fitted in the ring groove ( 15 ).
7. The tornado yoyo according to claim 1 , wherein the rotating disk ( 1 ) is provided with a circular plate ( 8 ) therein, the circular plate ( 8 ) has a circular hole ( 81 ) in the middle and is sleeved on the protruding cylinder ( 11 ) of the rotating disk ( 1 ) through the circular hole ( 81 ), and an outer surface of the circular plate ( 8 ) is provided with a layer of ornamental lines or patterns.
8. The tornado yoyo according to claim 6 , wherein the rotating cap ( 3 ) is configured as a transparent cap body correspondingly, to allow the circular plate ( 8 ) in the rotating disk ( 1 ) to be observable.
9. The tornado yoyo according to claim 1 , wherein the rotating disk ( 1 ) is provided with a counter weight ring ( 9 ) therein, and the counter weight ring ( 9 ) is fixed with the rotating disk ( 1 ) through a twist-on screw.
10. The tornado yoyo according to claim 1 , wherein the rotating disk ( 1 ) is provided with a counter weight ring ( 9 ) therein, and the counter weight ring ( 9 ) is provided with a snap edge configured to be fastened with a snap groove formed correspondingly in the rotating disk ( 1 ), so as to be fixed.